US3929152A - Fire hydrant cap and actuating tool therefor - Google Patents

Fire hydrant cap and actuating tool therefor Download PDF

Info

Publication number
US3929152A
US3929152A US486975A US48697574A US3929152A US 3929152 A US3929152 A US 3929152A US 486975 A US486975 A US 486975A US 48697574 A US48697574 A US 48697574A US 3929152 A US3929152 A US 3929152A
Authority
US
United States
Prior art keywords
cap
tool
hydrant
shoulder
engaging
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US486975A
Inventor
Gerald A Graham
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HYDRA-SHIELD MANUFACTURING Inc 2701 WEST AIRPORT FREEWAY STE 110 IRVING TX 75062 A CORP OF TX
Original Assignee
Gerald A Graham
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gerald A Graham filed Critical Gerald A Graham
Priority to US486975A priority Critical patent/US3929152A/en
Application granted granted Critical
Publication of US3929152A publication Critical patent/US3929152A/en
Assigned to HYDRA-SHIELD MANUFACTURING, INC., 2701 WEST AIRPORT FREEWAY, STE. 110, IRVING, TX 75062, A CORP. OF TX. reassignment HYDRA-SHIELD MANUFACTURING, INC., 2701 WEST AIRPORT FREEWAY, STE. 110, IRVING, TX 75062, A CORP. OF TX. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: HYDRA-SHIELD MANUFACTURING, INC., A CORP. OF MI.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B9/00—Methods or installations for drawing-off water
    • E03B9/02—Hydrants; Arrangements of valves therein; Keys for hydrants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0076—Specially shaped nuts or heads of bolts or screws for rotations by a tool causing slipping of the tool in loosening rotation, i.e. disabling unscrewing unless another tool is used
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/919—Screw having driving contacts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/5327—Hydrant type
    • Y10T137/5456—With casing
    • Y10T137/5468—Cap, cover or hood
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/9247—With closure

Definitions

  • ABSTRACT A fire hydrant cap which cannot readily be unthreaded from a fire hydrant by conventional tools.
  • a body having first and second ends with the first end having internal threads for attachment to a fire hydrant while the second end extends from the first end and includes a curved convex shape which cannot be readily gripped by a conventional tool.
  • a plurality of tool engaging surfaces spaced from each other are positioned on the second end with each surface including a shoulder facing in a counterclockwise direction to provide engagement with a special tool for tightening the cap onto the hydrant.
  • Each engaging surface includes a recess extending from each shoulder in a counterclockwise direction with a curved surface extending from a shoulder and progressively increasing in distance from the axis of the body for coacting with a special tool for unthreading the cap from a hydrant.
  • a special actuating tool having a generally circular body and including an internal opening and a handle connected to the tool is provided for rotating the tool.
  • the tool includes a plurality of actuating surfaces positioned about the internal opening for coacting with the engaging surfaces on the second end of the cap for tightening and untightening the cap.
  • the present invention is directed to a fire cap which is not readily openable by conventional tools such as a pipe wrench, a crescent wrench, or hammer and chisel, but can only be opened by a special tool in order to discourage the theft and/or unauthorized opening of fire hydrants.
  • the present invention is directed to a fire hydrant cap having first and second ends with the first end having internal threads extending inwardly into the body for attachment to the outlet to a tire hydrant.
  • the second end of the body extends from the first end and includes a convex curved surface, preferably in the form of a sector of a sphere, which is not readily engageable by conventional tools.
  • a plurality of special tool engaging surfaces spaced from each other are positioned on the second end which require a special tool for unthreading the cap from the hydrant.
  • Still a further object of the present invention is the provision of a plurality of tool engaging surfaces positioned on the second end wherein each engaging surface includes a shoulder facing oppositely to the direction in which the cap is threaded onto a hydrant for providing a shoulder for engaging a tool for connecting the cap to a hydrant.
  • each engaging surface includes a recess extending from the shoulder in a direction opposite to the direction in which the cap is threaded onto the hydrant which includes a curved surface which progressively increases in distance from the axis of the body for coacting with a special tool for unthreading the cap from a hydrant.
  • Yet a still further object of the present invention is the provision of three engaging surfaces spaced equal distance around the second end of the cap.
  • Still a further object of the present invention is the provision of an actuating tool for tightening and untightening the cap from a fire hydrant in which the tool is arcuately shaped and has a plurality of actuating surfaces positioned interiorly of the tool for coacting with the engaging surfaces on the second end of the cap for tightening and untightening the cap from a hydrant.
  • Each of the actuating surfaces includes a shoulder positioned to coact with the shoulder on the cap engaging surfaces and includes a curved portion positioned to coact with a curved surface on a cap engaging surface.
  • the tool may include a handle for rotating the tool and may include a pentagonal recess for actuating the fire hydrant valve.
  • FIG. 1 is an elevational view, showing the fire hydrant cap of the present invention in place on a fire hydrant and an actuating tool of the present invention in position to engage the cap,
  • FIG. 2 is an enlarged elevational view of one end of the fire hydrant cap of FIG. 1,
  • FIG. 3 is a cross-sectional view taken along the line 33 of FIG. 2,
  • FIG. 4 is a perspective view of the fire hydrant cap of the present invention.
  • FIG. 5 is an enlarged elevational view of the actuating tool of the present invention.
  • the reference numeral 10 generally indicates a conventional fire hydrant on which the fire hydrant cap of the present invention, generally indicated by the reference numeral 12, has been attached by an actuating tool of the present invention, generally indicated by Y the reference numeral 14.
  • the present invention is directed to providing a fire hydrant cap 12 having a body 20 having a first end 22 and a second end 24.
  • the first end 22 is provided with internal threads 26 extending into the body whereby the threads 26 may be mated with coacting threads on the outlet 18 of the fire hydrant 10 for connecting the cap 12 to the hydrant 10.
  • the first end 22 of the cap 12 is flat for mating against the fire hydrant outlet 18.
  • the second end 24 extends from the first end 22 from a generally circular intersection 23 with the first end 22 and includes a curved convex shape which is not readily engageable with conventional tools such as wrenches having parallel jaws and includes no sharp corners or edges which can be engaged by chisels for unthreading the cap 12.
  • the shape of the curved surface of the end 24 is in the form of a sector of a sphere although any curved convex surface may be utilized which cannot be easily gripped by conventional toos and rotated off the fire hydrant outlet 18.
  • a plurality of tool engaging surfaces are. positioned on the second end 24 of the cap 12.
  • Each engaging surface 30 includes a shoulder 32 facing oppositely to the direction in which the cap is threaded onto hydrant outlet 18 for providing shoulders for engaging a tool for connecting the cap to the hydrant.
  • the internal threads 26 on the first end 22 of the cap 12 are usually threaded for right-hand rotation and thus the shoulders 32 in FIG. 2 are directed in a counterclockwise direction around the longituidnal axis 34 of the cap 12 to provide a surface for engaging an actuating tool for threading and tightening the cap 12 onto 3 the hydrant 10.
  • any force applied to the shoulders 32 will always be in a direction for tightening the cap 12 onto the hydrant 10, and cannot be engaged for unthreading the cap 12 by any conventional type wrench.
  • Each of the engaging surfaces 30 also includes a recess 34 extending from each shoulder 32 in a direction opposite to the direction in which the cap is threaded onto the hydrant outlet 18 and each recess 34 includes a curved surface 36 extending from the shoulder 32 and progressively increasing in radial distance from the longitudinal axis 34 of the body for providing a surface for coacting with a special tool for unthreading the cap 12 from the hydrant 10. It is noted that the curved surfaces 36 do not provide a gripping surface for engagement by any conventional tools for unthreading the cap 12.
  • the tool 14 includes a generally arcuate portion 40, and is preferably circular.
  • Portion 40 includes an internal opening 41 for fitting around the end 24 of cap 12 and includes a plurality of actuating surfaces generally indicated by the reference numeral 42, which are equal in number to the number of tool engaging surfaces 30 on the cap 12 for coacting therewith.
  • Each actuating surface 42 includes a shoulder 44 positioned to coact with one of the shoulders 32 on the cap 12.
  • Each of the actuating surfaces also includes a curved portion 46 which extends from a shoulder 44 in a clockwise direction and progressively de creases in distance from the center of the circular portion 40 and is shaped to coact with the curved surfaces 36 on the cap 12.
  • the tool 14 may also include a handle 48 connected to the circular portion 40 for rotating the circular portion 40.
  • the handle may include a hexagonal recess 50 for actuating a valve stem 16 of a tire hydrant.
  • the cap 12 may be threaded onto the outlet 18 of a fire hydrant 10 by means of the threads 26.
  • the actuating tool 14 may be inserted over the end 24 bringing the shoulders 44 on the tool 14 into engagement with the shoulders 32 of the cap 12 and rotation of the handle 48 of the tool 14 will tighten the cap 24 onto the hydrant 10.
  • the actuating tool 14 is again fitted over the end 24 of the cap 12 placing the curved portions 46 on the tool 14 into engagement with the curved surfaces 36 on the cap and the tool 14 is rotated in a counterclockwise direction to unthread the cap 12 from the outlet 18.
  • a fire hydrant cap comprising a body having first and second ends, said first end having internal threads extending in wardly into the body for attachment to a fire hydrant, said second end extending from the first end and having a curved convex shape,
  • each engaging surface including a shoulder facing oppositely to the direction in which the cap is threaded onto a hydrant for providing shoulders for engaging a tool for connecting the cap to a hydrant
  • each engaging surface including a recess extending from said shoulder in a direction opposite to the direction in which the cap is threaded onto the hydrant, said recess including a curved surface progressively increasing in distance from the axis of the body and includes a sidewall which extends parallel to the longitudinal axis of said cap for coacting with a tool for unthreading the cap from a hydrant.
  • an arcuately shaped tool having a plurality of actuating surfaces positioned interiorly of the tool for coacting with the engaging surfaces on the second end of the cap for tightening and untightening said cap from the hydrant, each actuating surface including a shoulder positioned and shaped to coact with a shoulder on the cap engaging surfaces and including a curved portion positioned and shaped to coact with a curved surface on the cap engaging surfaces on the second end of the cap.
  • a fire hydrant cap comprising, I
  • said first end having internal threads extending inwardly into the body for attachment to a fire hydrant
  • said second end extending from a generally circular intersection with the first end and having a curved convex shape generally in the form of a sector of a sphere
  • each engaging surface including a shoulder facing in a counterclockwise direction in the second end for providing shoulders for engaging a tool for tightening the cap on the hydrant
  • each engaging surface including a recess extending from each shoulder in a counterclockwise direction in the second end, said recess including a curved surface extending from a shoulder and progressively increasing in distance from the axis of the body and includes a sidewall which extends parallel to the longitudinal axis of said cap for coacting with a tool for unthreading the cap from a hydrant.
  • a generally circular tool having an internal opening and a handle connected to the tool for rotating the 6 on the cap engaging surfaces and including a curved portion positioned and shaped to coact with a curved surface on the cap engaging surface on the second end of the cap.
  • the tool includes a pentagonal recess for actuating a fire hydrant.

Abstract

A fire hydrant cap which cannot readily be unthreaded from a fire hydrant by conventional tools. A body having first and second ends with the first end having internal threads for attachment to a fire hydrant while the second end extends from the first end and includes a curved convex shape which cannot be readily gripped by a conventional tool. A plurality of tool engaging surfaces spaced from each other are positioned on the second end with each surface including a shoulder facing in a counterclockwise direction to provide engagement with a special tool for tightening the cap onto the hydrant. Each engaging surface includes a recess extending from each shoulder in a counterclockwise direction with a curved surface extending from a shoulder and progressively increasing in distance from the axis of the body for coacting with a special tool for unthreading the cap from a hydrant. Preferably, three engaging surfaces are provided spaced equal distance around the periphery of the second end. A special actuating tool having a generally circular body and including an internal opening and a handle connected to the tool is provided for rotating the tool. The tool includes a plurality of actuating surfaces positioned about the internal opening for coacting with the engaging surfaces on the second end of the cap for tightening and untightening the cap.

Description

United States Patent 11 1 Graham 1451 Dec. 30, 1975 54] FIRE HYDRANT CAP AND ACTUATING TOOL THEREFOR [76] Inventor: Gerald A. Graham, 9721 Kempwood Drive, Apt. 1405, Houston, Tex. 77055 22 Filed: July 10, 1974 21 Appl. No.: 486,975
Primary Examinerl-lenry T. Klinksiek Assistant Examiner-Richard Gerard Attorney, Agent, or Firm-Fulbright & Jaworski [57] ABSTRACT A fire hydrant cap which cannot readily be unthreaded from a fire hydrant by conventional tools. A
body having first and second ends with the first end having internal threads for attachment to a fire hydrant while the second end extends from the first end and includes a curved convex shape which cannot be readily gripped by a conventional tool. A plurality of tool engaging surfaces spaced from each other are positioned on the second end with each surface including a shoulder facing in a counterclockwise direction to provide engagement with a special tool for tightening the cap onto the hydrant. Each engaging surface includes a recess extending from each shoulder in a counterclockwise direction with a curved surface extending from a shoulder and progressively increasing in distance from the axis of the body for coacting with a special tool for unthreading the cap from a hydrant. Preferably, three engaging surfaces are provided spaced equal distance around the periphery of the second end. A special actuating tool having a generally circular body and including an internal opening and a handle connected to the tool is provided for rotating the tool. The tool includes a plurality of actuating surfaces positioned about the internal opening for coacting with the engaging surfaces on the second end of the cap for tightening and untightening the cap.
8 Claims, 5 Drawing Figures US. Patent Dec. 30, 1975 3,929,152
FIRE I-IYDRANT CAP AND ACTUATING TOOL THEREFOR BACKGROUND OF THE INVENTION Conventional fire hydrant caps can be easily opened with conventional pipe wrenches or crescent wrenches. Because of this, many instances have occured in which the pipe caps have been removed and stolen. Or a great number of fire hydrants have been turned on at one time thereby lowering the water pressure and decreasing the ability of a fire department to adequately protect an area against fire.
The present invention is directed to a fire cap which is not readily openable by conventional tools such as a pipe wrench, a crescent wrench, or hammer and chisel, but can only be opened by a special tool in order to discourage the theft and/or unauthorized opening of fire hydrants.
SUMMARY The present invention is directed to a fire hydrant cap having first and second ends with the first end having internal threads extending inwardly into the body for attachment to the outlet to a tire hydrant. The second end of the body extends from the first end and includes a convex curved surface, preferably in the form of a sector of a sphere, which is not readily engageable by conventional tools. A plurality of special tool engaging surfaces spaced from each other are positioned on the second end which require a special tool for unthreading the cap from the hydrant.
Still a further object of the present invention is the provision of a plurality of tool engaging surfaces positioned on the second end wherein each engaging surface includes a shoulder facing oppositely to the direction in which the cap is threaded onto a hydrant for providing a shoulder for engaging a tool for connecting the cap to a hydrant. In addition, each engaging surface includes a recess extending from the shoulder in a direction opposite to the direction in which the cap is threaded onto the hydrant which includes a curved surface which progressively increases in distance from the axis of the body for coacting with a special tool for unthreading the cap from a hydrant.
Yet a still further object of the present invention is the provision of three engaging surfaces spaced equal distance around the second end of the cap.
Still a further object of the present invention is the provision of an actuating tool for tightening and untightening the cap from a fire hydrant in which the tool is arcuately shaped and has a plurality of actuating surfaces positioned interiorly of the tool for coacting with the engaging surfaces on the second end of the cap for tightening and untightening the cap from a hydrant. Each of the actuating surfaces includes a shoulder positioned to coact with the shoulder on the cap engaging surfaces and includes a curved portion positioned to coact with a curved surface on a cap engaging surface. The tool may include a handle for rotating the tool and may include a pentagonal recess for actuating the fire hydrant valve.
Other and further features and advantages will be readily apparent from the following description of the preferred embodiment.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an elevational view, showing the fire hydrant cap of the present invention in place on a fire hydrant and an actuating tool of the present invention in position to engage the cap,
FIG. 2 is an enlarged elevational view of one end of the fire hydrant cap of FIG. 1,
FIG. 3 is a cross-sectional view taken along the line 33 of FIG. 2,
FIG. 4 is a perspective view of the fire hydrant cap of the present invention, and
FIG. 5 is an enlarged elevational view of the actuating tool of the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now to the drawings, and particularly to FIG. 1, the reference numeral 10 generally indicates a conventional fire hydrant on which the fire hydrant cap of the present invention, generally indicated by the reference numeral 12, has been attached by an actuating tool of the present invention, generally indicated by Y the reference numeral 14.
In the past, the conventional fire hydrant caps have been easily removable with conventional tools such as wrenches and the fire hydrants 10 were turned on wasting water and in many instances in some localities a great number of fire hydrants have been turned on simultaneously thereby lowering the water pressure in the fire fighting system severely limiting fire fighting capabilities.
Furthermore, many fire hydrant caps have been removed and had to be replaced at great expense.
The present invention is directed to providing a fire hydrant cap 12 having a body 20 having a first end 22 and a second end 24. As best seen in FIG. 3, the first end 22 is provided with internal threads 26 extending into the body whereby the threads 26 may be mated with coacting threads on the outlet 18 of the fire hydrant 10 for connecting the cap 12 to the hydrant 10. Preferably, the first end 22 of the cap 12 is flat for mating against the fire hydrant outlet 18. The second end 24 extends from the first end 22 from a generally circular intersection 23 with the first end 22 and includes a curved convex shape which is not readily engageable with conventional tools such as wrenches having parallel jaws and includes no sharp corners or edges which can be engaged by chisels for unthreading the cap 12. Preferably, the shape of the curved surface of the end 24 is in the form of a sector of a sphere although any curved convex surface may be utilized which cannot be easily gripped by conventional toos and rotated off the fire hydrant outlet 18.
In order to rotate the cap 12 onto and off of the fire hydrant 10, a plurality of tool engaging surfaces, generally indicated by the reference numeral 30, are. positioned on the second end 24 of the cap 12. Each engaging surface 30 includes a shoulder 32 facing oppositely to the direction in which the cap is threaded onto hydrant outlet 18 for providing shoulders for engaging a tool for connecting the cap to the hydrant. As shown, the internal threads 26 on the first end 22 of the cap 12 are usually threaded for right-hand rotation and thus the shoulders 32 in FIG. 2 are directed in a counterclockwise direction around the longituidnal axis 34 of the cap 12 to provide a surface for engaging an actuating tool for threading and tightening the cap 12 onto 3 the hydrant 10. While, of course, the shoulders 32 may be engaged by a tool such as chisels and hammers, any force applied to the shoulders 32 will always be in a direction for tightening the cap 12 onto the hydrant 10, and cannot be engaged for unthreading the cap 12 by any conventional type wrench.
Each of the engaging surfaces 30 also includes a recess 34 extending from each shoulder 32 in a direction opposite to the direction in which the cap is threaded onto the hydrant outlet 18 and each recess 34 includes a curved surface 36 extending from the shoulder 32 and progressively increasing in radial distance from the longitudinal axis 34 of the body for providing a surface for coacting with a special tool for unthreading the cap 12 from the hydrant 10. It is noted that the curved surfaces 36 do not provide a gripping surface for engagement by any conventional tools for unthreading the cap 12.
As best seen in FIG. 2, it is preferred to provide three engaging surfaces 30 spaced equal distance, or approximately 120 apart, around the second end 24 of the cap 12 although the cap 12 may be satisfactorily operated with only two engaging surfaces 30.
Referring now to FIGS. 1 and 5, the actuating tool 14 for threading and unthreading the cap 12 from the hydrant is best seen. The tool 14 includes a generally arcuate portion 40, and is preferably circular. Portion 40 includes an internal opening 41 for fitting around the end 24 of cap 12 and includes a plurality of actuating surfaces generally indicated by the reference numeral 42, which are equal in number to the number of tool engaging surfaces 30 on the cap 12 for coacting therewith. Each actuating surface 42 includes a shoulder 44 positioned to coact with one of the shoulders 32 on the cap 12. Each of the actuating surfaces also includes a curved portion 46 which extends from a shoulder 44 in a clockwise direction and progressively de creases in distance from the center of the circular portion 40 and is shaped to coact with the curved surfaces 36 on the cap 12.
The tool 14 may also include a handle 48 connected to the circular portion 40 for rotating the circular portion 40. In addition, the handle may include a hexagonal recess 50 for actuating a valve stem 16 of a tire hydrant.
In use, the cap 12 may be threaded onto the outlet 18 of a fire hydrant 10 by means of the threads 26. The actuating tool 14 may be inserted over the end 24 bringing the shoulders 44 on the tool 14 into engagement with the shoulders 32 of the cap 12 and rotation of the handle 48 of the tool 14 will tighten the cap 24 onto the hydrant 10. In the event that it is desired to remove the cap 12 from the hydrant 10, the actuating tool 14 is again fitted over the end 24 of the cap 12 placing the curved portions 46 on the tool 14 into engagement with the curved surfaces 36 on the cap and the tool 14 is rotated in a counterclockwise direction to unthread the cap 12 from the outlet 18.
The present invention, therefore, is well adapted to carry out the objects and attain the ends and advantages mentioned as well as others inherent therein. While a presently preferred embodiment of the invention is given for the purpose of disclosure, numerous changes in the details of construction and arrangement of parts will readily suggest themselves to those skilled in the art and which are encompassed within the spirit of the invention and the scope of the appended claims.
What is claimed is:
4 l. A fire hydrant cap comprising a body having first and second ends, said first end having internal threads extending in wardly into the body for attachment to a fire hydrant, said second end extending from the first end and having a curved convex shape,
a plurality of tool engaging surfaces spaced from each other and positioned on the second end, each engaging surface including a shoulder facing oppositely to the direction in which the cap is threaded onto a hydrant for providing shoulders for engaging a tool for connecting the cap to a hydrant,
each engaging surface including a recess extending from said shoulder in a direction opposite to the direction in which the cap is threaded onto the hydrant, said recess including a curved surface progressively increasing in distance from the axis of the body and includes a sidewall which extends parallel to the longitudinal axis of said cap for coacting with a tool for unthreading the cap from a hydrant.
2. The apparatus of claim 1 wherein there are three engaging surfaces spaced equidistance around said second end.
3. The apparatus of claim 1 wherein the curved convex shape of the second end is generally a sector of a sphere.
4. The apparatus of claim 1 including,
an arcuately shaped tool having a plurality of actuating surfaces positioned interiorly of the tool for coacting with the engaging surfaces on the second end of the cap for tightening and untightening said cap from the hydrant, each actuating surface including a shoulder positioned and shaped to coact with a shoulder on the cap engaging surfaces and including a curved portion positioned and shaped to coact with a curved surface on the cap engaging surfaces on the second end of the cap.
5. A fire hydrant cap comprising, I
a body having first and second ends,
said first end having internal threads extending inwardly into the body for attachment to a fire hydrant,
said second end extending from a generally circular intersection with the first end and having a curved convex shape generally in the form of a sector of a sphere,
a plurality of tool engaging surfaces spaced from each other and positioned on the second end, each engaging surface including a shoulder facing in a counterclockwise direction in the second end for providing shoulders for engaging a tool for tightening the cap on the hydrant,
each engaging surface including a recess extending from each shoulder in a counterclockwise direction in the second end, said recess including a curved surface extending from a shoulder and progressively increasing in distance from the axis of the body and includes a sidewall which extends parallel to the longitudinal axis of said cap for coacting with a tool for unthreading the cap from a hydrant.
6. The apparatus of claim 5 wherein there are three engaging surfaces spaced equidistance around said second end.
7. The apparatus of claim 5 including,
a generally circular tool having an internal opening and a handle connected to the tool for rotating the 6 on the cap engaging surfaces and including a curved portion positioned and shaped to coact with a curved surface on the cap engaging surface on the second end of the cap. 8. The apparatus of claim 7 wherein the tool includes a pentagonal recess for actuating a fire hydrant.

Claims (8)

1. A fire hydrant cap comprising, a body having first and second ends, said first end having internal threads extending inwardly into the body for attachment to a fire hydrant, said second end extending from the first end and having a curved convex shape, a plurality of tool engaging surfaces spaced from each other and positioned on the second end, each engaging surface including a shoulder facing oppositely to the direction in which the cap is threaded onto a hydrant for providing shoulders for engaging a tool for connecting the cap to a hydrant, each engaging surface including a recess extending from said shoulder in a direction opposite to the direction in which the cap is threaded onto the hydrant, said recess including a curved surface progressively increasing in distance from the axis of the body and includes a sidewall which extends parallel to the longitudinal axis of said cap for coacting with a tool for unthreading the cap from a hydrant.
2. The apparatus of claim 1 wherein there are three engaging surfaces spaced equidistance around said second end.
3. The apparatus of claim 1 wherein the curved convex shape of the second end is generally a sector of a sphere.
4. The apparatus of claim 1 including, an arcuately shaped tool having a plurality of actuating surfaces positioned interiorly of the tool for coacting with the engaging surfaces on the second end of the cap for tightening and untightening said cap from the hydrant, each actuating surface including a shoulder positioned and shaped to coact with a shoulder on the cap engaging surfaces and including a curved portion positioned and shaped to coact with a curved surface on the cap engaging surfaces on the second end of the cap.
5. A fire hydrant cap comprising, a body having first and second ends, said first end having internal threads extending inwardly into the body for attachment to a fire hydrant, said second end extending from a generally circular intersection with the first end and having a curved convex shape generally in the form of a sector of a sphere, a plurality of tool engaging surfaces spaced from each other and positioned on the second end, each engaging surface including a shoulder facing in a counterclockwise direction in the second end for providing shoulders for engaging a tool for tightening the cap on the hydrant, each engaging surface including a recess extending from each shoulder in a counterclockwise direction in the second end, said recess including a curved surface extending from a shoulder and progressively increasing in distance from the axis of the body and includes a sidewall which extends parallel to the longitudinal axis of said cap for coacting with a tool for unthreading the cap from a hydrant.
6. The apparatus of claim 5 wherein there are three engaging surfaces spaced equidistance around said second end.
7. The apparatus of claim 5 including, a generally circular tool having an internal opening and a handle connected to the tool for rotating the tool, said tool including a plurality of actuating surfaces positioned about the internal opening for coacting with the engaging surfaces on the second end of the cap for tightening and untightening said cap from a hydrant, each actuating surface including a shoulder positioned and shaped to coact with a shoulder on the cap engaging surfaces and including a curved portion positioned and shaped to coact with a curved surface on the cap engaging surface on the second end of the cap.
8. The apparatus of claim 7 wherein the tool includes a pentagonal recess for actuating a fire hydrant.
US486975A 1974-07-10 1974-07-10 Fire hydrant cap and actuating tool therefor Expired - Lifetime US3929152A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US486975A US3929152A (en) 1974-07-10 1974-07-10 Fire hydrant cap and actuating tool therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US486975A US3929152A (en) 1974-07-10 1974-07-10 Fire hydrant cap and actuating tool therefor

Publications (1)

Publication Number Publication Date
US3929152A true US3929152A (en) 1975-12-30

Family

ID=23933882

Family Applications (1)

Application Number Title Priority Date Filing Date
US486975A Expired - Lifetime US3929152A (en) 1974-07-10 1974-07-10 Fire hydrant cap and actuating tool therefor

Country Status (1)

Country Link
US (1) US3929152A (en)

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4033372A (en) * 1976-06-16 1977-07-05 Bowman Harold M Fire hydrant locking device
US4109691A (en) * 1977-12-21 1978-08-29 Wilson Floyd Leroy Combination torque release screw and screw driver
US4171662A (en) * 1976-12-20 1979-10-23 Wright Line Inc. Security screw
US4356839A (en) * 1981-09-14 1982-11-02 Anthony Voynovich Tamper resistant valve actuator for fire hydrant
US4379469A (en) * 1981-12-30 1983-04-12 Britz Arne J Fire hydrant cap with recessed valve
USD270229S (en) 1980-10-22 1983-08-23 The Eastern Company Tool and operator head for tool-operated lock
USD270424S (en) 1980-10-22 1983-09-06 The Eastern Company Tool operator for tool-operated locks
US4712586A (en) * 1985-05-10 1987-12-15 Mcgard, Inc. Pipe plug and centering construction for centering ridged key in mating groove in pipe plug
US4871144A (en) * 1989-02-14 1989-10-03 John Kaniaris Regulator key
US4878515A (en) * 1988-10-07 1989-11-07 Stevens Robert B Water access preventer
US4981383A (en) * 1986-11-04 1991-01-01 J. S. Staedtler Gmbh & Co. Device for screwing a writing instrument tip into a writing fluid reservoir
AT392502B (en) * 1988-09-30 1991-04-25 Gratz & Boehm Ges M B H Cover for the outflow opening of hydrants
US5033501A (en) * 1990-12-04 1991-07-23 Hydra-Shield Manufacturing, Inc. Fire hydrant cap and actuating tool therefor
EP0487440A1 (en) * 1990-11-22 1992-05-27 TCC (TRANSPORTS EN COMMUN DE LA COMMUNAUTE URBAINE DE LILLE) Société anonyme dite: Industrial lock and key therefor
US5383495A (en) * 1993-06-21 1995-01-24 Penn Troy Machine Co., Inc. Stainless steel security cap for fire hydrants
US5704589A (en) * 1995-10-12 1998-01-06 Victor Equipment Company Yoke for mounting on a gas tank
US5785194A (en) * 1991-06-07 1998-07-28 Warner-Lambert Company Cap for a container and opening means therefor
US6024522A (en) * 1997-04-24 2000-02-15 Mcgard, Inc. Security fastener and drive tool for driving both security fasteners and conventional fasteners
US6112761A (en) * 1999-11-15 2000-09-05 Scotto; Gary Fire hydrant locking device and wrench
US20070292237A1 (en) * 2006-06-02 2007-12-20 Richard Paul Riedel Nut for attaching two devices and method for providing the same
US20090058075A1 (en) * 2006-03-16 2009-03-05 Oilquick Ab Hydraulic coupling device and components and method related thereto
GB2460182A (en) * 2008-05-24 2009-11-25 Advanced Specialist Moulders Ltd Closure cap for a hydrant
EP1923581A3 (en) * 2006-11-16 2010-12-01 NEDSCHROEF PLETTENBERG GmbH Threaded device
USD629489S1 (en) 2008-04-17 2010-12-21 The Procter & Gamble Company Connector for a faucet mounted water filter
USD629487S1 (en) 2008-04-17 2010-12-21 The Procter & Gamble Company Connector for a faucet mounted water filter
USD637691S1 (en) 2010-08-18 2011-05-10 The Procter & Gamble Company Connector for a faucet mounted water filter
USD637693S1 (en) 2010-08-18 2011-05-10 The Procter & Gamble Company Connector for a faucet mounted water filter
USD637690S1 (en) 2010-08-18 2011-05-10 The Procter & Gamble Company Connector for a faucet mounted water filter
US20120325058A1 (en) * 2011-06-22 2012-12-27 Herbert Stricker Water Softener Filter Wrench System
GB2508290A (en) * 2013-10-16 2014-05-28 Michael Philip Joy Capping tool for sealing a heating element such as a radiator during removal
US9004290B2 (en) 2006-06-02 2015-04-14 Pur Water Purification Products, Inc. Apparatus and methods for faucet-mounted water filtration systems
USD739196S1 (en) * 2014-08-25 2015-09-22 Unique Canyon Products, Inc. Fire hydrant-shaped bottle opener
US20150354620A1 (en) * 2014-06-10 2015-12-10 Revlock, LLC Tamper-Resistant Bicycle Axle Nut
US10221946B1 (en) * 2017-09-06 2019-03-05 Ford Global Technologies, Llc Security fastener
US10898991B2 (en) 2015-08-31 2021-01-26 Mountain Valley Supply, Llc Hammer union securement methods and apparatus
US11137088B2 (en) 2019-01-07 2021-10-05 Kennedy Valve Company Locking wrench for fire hydrant

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3070115A (en) * 1958-01-29 1962-12-25 Darling Valve & Mfg Company Curb hydrant
US3331274A (en) * 1965-06-01 1967-07-18 Walton Marvin Flatheaded one-way screw
US3730048A (en) * 1970-06-11 1973-05-01 J Okada Screw with a head looking like a true circle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3070115A (en) * 1958-01-29 1962-12-25 Darling Valve & Mfg Company Curb hydrant
US3331274A (en) * 1965-06-01 1967-07-18 Walton Marvin Flatheaded one-way screw
US3730048A (en) * 1970-06-11 1973-05-01 J Okada Screw with a head looking like a true circle

Cited By (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4033372A (en) * 1976-06-16 1977-07-05 Bowman Harold M Fire hydrant locking device
US4171662A (en) * 1976-12-20 1979-10-23 Wright Line Inc. Security screw
US4109691A (en) * 1977-12-21 1978-08-29 Wilson Floyd Leroy Combination torque release screw and screw driver
USD270229S (en) 1980-10-22 1983-08-23 The Eastern Company Tool and operator head for tool-operated lock
USD270424S (en) 1980-10-22 1983-09-06 The Eastern Company Tool operator for tool-operated locks
US4356839A (en) * 1981-09-14 1982-11-02 Anthony Voynovich Tamper resistant valve actuator for fire hydrant
US4379469A (en) * 1981-12-30 1983-04-12 Britz Arne J Fire hydrant cap with recessed valve
US4712586A (en) * 1985-05-10 1987-12-15 Mcgard, Inc. Pipe plug and centering construction for centering ridged key in mating groove in pipe plug
US4981383A (en) * 1986-11-04 1991-01-01 J. S. Staedtler Gmbh & Co. Device for screwing a writing instrument tip into a writing fluid reservoir
AT392502B (en) * 1988-09-30 1991-04-25 Gratz & Boehm Ges M B H Cover for the outflow opening of hydrants
US4878515A (en) * 1988-10-07 1989-11-07 Stevens Robert B Water access preventer
US4871144A (en) * 1989-02-14 1989-10-03 John Kaniaris Regulator key
EP0487440A1 (en) * 1990-11-22 1992-05-27 TCC (TRANSPORTS EN COMMUN DE LA COMMUNAUTE URBAINE DE LILLE) Société anonyme dite: Industrial lock and key therefor
US5033501A (en) * 1990-12-04 1991-07-23 Hydra-Shield Manufacturing, Inc. Fire hydrant cap and actuating tool therefor
US5785194A (en) * 1991-06-07 1998-07-28 Warner-Lambert Company Cap for a container and opening means therefor
US5383495A (en) * 1993-06-21 1995-01-24 Penn Troy Machine Co., Inc. Stainless steel security cap for fire hydrants
US5704589A (en) * 1995-10-12 1998-01-06 Victor Equipment Company Yoke for mounting on a gas tank
US6024522A (en) * 1997-04-24 2000-02-15 Mcgard, Inc. Security fastener and drive tool for driving both security fasteners and conventional fasteners
US6112761A (en) * 1999-11-15 2000-09-05 Scotto; Gary Fire hydrant locking device and wrench
US20090058075A1 (en) * 2006-03-16 2009-03-05 Oilquick Ab Hydraulic coupling device and components and method related thereto
US8087701B2 (en) * 2006-03-16 2012-01-03 Oilquick Ab Hydraulic coupling device
US20070292237A1 (en) * 2006-06-02 2007-12-20 Richard Paul Riedel Nut for attaching two devices and method for providing the same
US7568874B2 (en) * 2006-06-02 2009-08-04 Pur Water Purification Products, Inc. Nut for attaching two devices and method for providing the same
US10125026B2 (en) 2006-06-02 2018-11-13 Helen Of Troy Limited Apparatus and methods for faucet-mounted water filtration systems
US9004290B2 (en) 2006-06-02 2015-04-14 Pur Water Purification Products, Inc. Apparatus and methods for faucet-mounted water filtration systems
EP1923581A3 (en) * 2006-11-16 2010-12-01 NEDSCHROEF PLETTENBERG GmbH Threaded device
US11440813B2 (en) 2007-09-05 2022-09-13 Helen Of Troy Limited Apparatus and methods for faucet-mounted water filtration systems
USD629489S1 (en) 2008-04-17 2010-12-21 The Procter & Gamble Company Connector for a faucet mounted water filter
USD665048S1 (en) 2008-04-17 2012-08-07 Pur Water Purification Products, Inc. Connector for a faucet mounted water filter
USD629487S1 (en) 2008-04-17 2010-12-21 The Procter & Gamble Company Connector for a faucet mounted water filter
USD637692S1 (en) 2008-04-17 2011-05-10 The Procter & Gamble Company Connector for a faucet mounted water filter
USD629490S1 (en) 2008-04-17 2010-12-21 The Procter & Gamble Company Connector for a faucet mounted water filter
USD631130S1 (en) 2008-04-17 2011-01-18 The Procter & Gamble Company Connector for a faucet mounted water filter
USD629865S1 (en) 2008-04-17 2010-12-28 The Procter & Gambple Company Connector for a faucet mounted water filter
GB2460182A (en) * 2008-05-24 2009-11-25 Advanced Specialist Moulders Ltd Closure cap for a hydrant
GB2460182B (en) * 2008-05-24 2012-08-08 Advanced Specialist Moulders Ltd Closure means
USD637690S1 (en) 2010-08-18 2011-05-10 The Procter & Gamble Company Connector for a faucet mounted water filter
USD637693S1 (en) 2010-08-18 2011-05-10 The Procter & Gamble Company Connector for a faucet mounted water filter
USD637691S1 (en) 2010-08-18 2011-05-10 The Procter & Gamble Company Connector for a faucet mounted water filter
US20120325058A1 (en) * 2011-06-22 2012-12-27 Herbert Stricker Water Softener Filter Wrench System
US9272396B2 (en) * 2011-06-22 2016-03-01 Herbert Stricker Water softener filter wrench system
GB2508290B (en) * 2013-10-16 2014-10-29 Michael Philip Joy A heating element capping tool
GB2508290A (en) * 2013-10-16 2014-05-28 Michael Philip Joy Capping tool for sealing a heating element such as a radiator during removal
US20150354620A1 (en) * 2014-06-10 2015-12-10 Revlock, LLC Tamper-Resistant Bicycle Axle Nut
US9464660B2 (en) * 2014-06-10 2016-10-11 Revlock, LLC Tamper-resistant bicycle axle nut
USD739196S1 (en) * 2014-08-25 2015-09-22 Unique Canyon Products, Inc. Fire hydrant-shaped bottle opener
US10898991B2 (en) 2015-08-31 2021-01-26 Mountain Valley Supply, Llc Hammer union securement methods and apparatus
US10221946B1 (en) * 2017-09-06 2019-03-05 Ford Global Technologies, Llc Security fastener
US11137088B2 (en) 2019-01-07 2021-10-05 Kennedy Valve Company Locking wrench for fire hydrant

Similar Documents

Publication Publication Date Title
US3929152A (en) Fire hydrant cap and actuating tool therefor
US5033501A (en) Fire hydrant cap and actuating tool therefor
US3874258A (en) Keyed attachment device for vehicle wheels
US3349947A (en) Closure
US5954466A (en) Anti-rotation clip for tightening and loosening nuts and bolts
US4171662A (en) Security screw
US4225165A (en) Tamper-resistant fastener for utility meters
US6112761A (en) Fire hydrant locking device and wrench
US3714852A (en) Power transfer device
US6076435A (en) Tool for multiple purposes
US4633896A (en) Operating nut for fire hydrant
US4554944A (en) Operating wrench for tamperproof hydrants
US5632301A (en) Tamper resistant construction for hydrant
US4356839A (en) Tamper resistant valve actuator for fire hydrant
TW202108310A (en) Internal gear retention mechanism
US4537543A (en) Security locking bolt
CA1241892A (en) Operating wrench for tamperproof hydrants
US4408505A (en) Multipurpose ratcheting wrench
US5440956A (en) Unidirectional gas valve shutoff tool and method
US6663149B1 (en) Threaded closure
US4119295A (en) Seal for LP gas cylinder valve
US3929042A (en) Tool for installation of seals for LP gas cylinder valves
US4442737A (en) Thread protector wrench
CN208005586U (en) Valve auxiliary switch tool
CN219113974U (en) Special enhanced encryption strong magnetic multifunctional wrench for fire engine

Legal Events

Date Code Title Description
AS Assignment

Owner name: HYDRA-SHIELD MANUFACTURING, INC., 2701 WEST AIRPOR

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:HYDRA-SHIELD MANUFACTURING, INC., A CORP. OF MI.;REEL/FRAME:004950/0659

Effective date: 19860902

Owner name: HYDRA-SHIELD MANUFACTURING, INC., 2701 WEST AIRPOR

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HYDRA-SHIELD MANUFACTURING, INC., A CORP. OF MI.;REEL/FRAME:004950/0659

Effective date: 19860902