US3347293A - Removable bit construction for screwdrivers and the like - Google Patents

Removable bit construction for screwdrivers and the like Download PDF

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Publication number
US3347293A
US3347293A US515832A US51583265A US3347293A US 3347293 A US3347293 A US 3347293A US 515832 A US515832 A US 515832A US 51583265 A US51583265 A US 51583265A US 3347293 A US3347293 A US 3347293A
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United States
Prior art keywords
bit
socket
ring
groove
section
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Expired - Lifetime
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US515832A
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Frederick G Clark
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Magna Driver Corp
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Magna Driver Corp
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Publication date
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Priority to US515832A priority Critical patent/US3347293A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/0007—Connections or joints between tool parts
    • B25B23/0035—Connection means between socket or screwdriver bit and tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B15/00—Screwdrivers
    • 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
    • Y10S403/00—Joints and connections
    • Y10S403/07—Split ring stop or abutment
    • 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
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17761—Side detent
    • Y10T279/17786—Spring
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/60—Biased catch or latch

Definitions

  • This invention relates to screwdrivers and the like having removable bits which are held in place in a socket of polygonal cross section by means of a resilient split ring of triangular cross section having converging sides which fit into notches of the bit and having a relatively flat outer face extending between the sides of a groove in the socket, to improve the holding of the bit in the socket of the bit holder to facilitate removal of the bit from the socket.
  • This invention relates to implements of the type generally designated as screwdrivers for use with fastenings, such as bolts, screws and the like, and more particularly this invention relates to implements of this type having removable bits.
  • FIG. 1 is a side view of a screwdriver having aremovable bit construction embodying this invention.
  • FIG. 2 is a fragmentary, enlarged, longitudinal sectional view thereof on line 2-2, FIG. 1.
  • FIG. 3 is a transverse sectional view thereof on line 33, FIG. 2.
  • FIG. 4 is a view of a fragmentary part of a resilient ring such as may be employed for holding a bit on the shank of an implement.
  • FIG. 1 shows by way of example a screwdriver having a handle 7 provided with a shank 8 and a bit 9 removably secured on the shank.
  • the shank is provided in the end thereof opposite to the handle 7 with an enlargement 10 having a socket 11 therein.
  • the bit 9 has the inner end 12 thereof formed to fit snugly but removably into the socket 11.
  • the other end 14 of the bit may be shaped to cooperate with any desired fastening device or workpiece, such for example, as a screw with a slot in the end thereof, but it will be understood that the outer end of the bit may be shaped to cooperate with any other type of screw, bolt or other fastening.
  • the interior of the socket 11 is of polygonal cross section, for example, hexagonal, as shown in the accompanying drawings, and the bit has its inner end formed to correspond in cross section to the interior of the socket.
  • the inner end 12 of the bit is formed to fit against the bottom of the socket. Consequently, rotary motion of the implement is transmitted through the socket to the inner end of the bit for turning the same, and pressure against the bit is restricted by the bottom of the socket.
  • Means are provided for removably securing the bit Within the socket so that the bit will be held in place during the use of the implement and also to permit ready removal of the bit for replacing the same if worn out or broken, or for replacing it with a bit of different size or shape.
  • the socket is provided with a circumferential groove 17 in the interior wall thereof adjacent to its open, outer end.
  • This groove may be of any desired cross sectional shape, preferably of rectangular cross section, and is shaped to receive a resilient split ring 19 of a width to fit into the groove.
  • Cooperation of the ring with the bit is provided 3,347,293 Patented Oct. 17, 1967 by means of notches 20 provided in the bit, particularly at the edges of the sides thereof.
  • the ring is seated partially within the groove 17 and within the notches 20 of the bit, so that the bit is held against displacement from the groove
  • the groove is of a depth at least equal to the thickness of the ring in a radial direction, so that during the removal of the bit from the socket the ring may be expanded so as to move out of the notches in the bit and is fully in the groove.
  • the resilience of the ring is such that the ring tends to contract and thus enter into the notches of the bit unless urged outwardly during the removal of the bit.
  • Resilient rings of circular cross section have been employed for holding a bit in a socket. I have found however that betterresults are obtained if the ring is made of angular cross section rather than circular.
  • the removal of the ring from the socket may be supplemented by providing in the socket a transverse hole or opening 27 in registration at its inner end with the groove 17 of the socket. Consequently, when the bit is removed from the socket and it is desired to remove the ring, an object with a small end can be insertecl into the hole or opening 27 to move an adjacent part of the ring out of the groove v17. The ring can then be easily engaged by a suitable hook and drawn out of the socket.
  • the angular cross sectional shape of the ring also makes it easier to install the ring in the socket because the outside diameter of the ring is smaller in relation to the socket opening than a ring of circular cross section.
  • the ring of angular cross section as herein disclosed is easier to remove from the socket for replacement because it presents a relatively flat, or at least broad surface which may be used to contract the ring for removal.
  • the angular relation of the inner face of the ring with the notches in the bit facilitates the removal and replacement of the bit from the socket.
  • My improved angular ring allows considerable latitude for adjustment of holding engagement with the bit.
  • the cross section of the ring and the notches in the bit can be an acute angle for greater holding strength or obtuse for a more yielding engagement.
  • An implement including a bit holder-having a socket of polygonal cross section in one end thereof,
  • said bit being provided with notches in circular arrangement about said bit and
  • a resilient ring fitting into said groove of said socket and into said notches of said bit to hold said bit in said socket, said ring being of angle-shaped cross section with two convering facesextending into said notches of the bit and with a relatively flat face extending from side to side of said groove to resist discharging said ring from said groove inadvertently.

Description

Oct. 17, 1967 F. e. CLARK REMOVABLE BIT CONSTRUCTION FOR SCREWDRIVERS AND THE LIKE Filed Dec. 23, 1965 INVENTOR) Mm ATTORNEYS United States Patent 3,347,293 REMOVABLE BIT CONSTRUCTION FOR SCREW- DRIVERS AND THE LIKE Frederick G. Clark, Buffalo, N.Y., assignor, by direct and mesne assignments, to Magna Driver Corporation, Buffalo, N.Y., a corporation of New York Filed Dec. 23, 1965, Ser. No. 515,832 2 Claims. (Cl. 145-50) ABSTRACT OF THE DISCLOSURE This invention relates to screwdrivers and the like having removable bits which are held in place in a socket of polygonal cross section by means of a resilient split ring of triangular cross section having converging sides which fit into notches of the bit and having a relatively flat outer face extending between the sides of a groove in the socket, to improve the holding of the bit in the socket of the bit holder to facilitate removal of the bit from the socket.
This invention relates to implements of the type generally designated as screwdrivers for use with fastenings, such as bolts, screws and the like, and more particularly this invention relates to implements of this type having removable bits.
In the accompanying drawings:
FIG. 1 is a side view of a screwdriver having aremovable bit construction embodying this invention.
FIG. 2 is a fragmentary, enlarged, longitudinal sectional view thereof on line 2-2, FIG. 1.
FIG. 3 is a transverse sectional view thereof on line 33, FIG. 2.
FIG. 4 is a view of a fragmentary part of a resilient ring such as may be employed for holding a bit on the shank of an implement.
FIG. 1 shows by way of example a screwdriver having a handle 7 provided with a shank 8 and a bit 9 removably secured on the shank. For this purpose the shank is provided in the end thereof opposite to the handle 7 with an enlargement 10 having a socket 11 therein.
The bit 9 has the inner end 12 thereof formed to fit snugly but removably into the socket 11. The other end 14 of the bit may be shaped to cooperate with any desired fastening device or workpiece, such for example, as a screw with a slot in the end thereof, but it will be understood that the outer end of the bit may be shaped to cooperate with any other type of screw, bolt or other fastening.
The interior of the socket 11 is of polygonal cross section, for example, hexagonal, as shown in the accompanying drawings, and the bit has its inner end formed to correspond in cross section to the interior of the socket. The inner end 12 of the bit is formed to fit against the bottom of the socket. Consequently, rotary motion of the implement is transmitted through the socket to the inner end of the bit for turning the same, and pressure against the bit is restricted by the bottom of the socket.
Means are provided for removably securing the bit Within the socket so that the bit will be held in place during the use of the implement and also to permit ready removal of the bit for replacing the same if worn out or broken, or for replacing it with a bit of different size or shape. In the construction shown for this purpose the socket is provided with a circumferential groove 17 in the interior wall thereof adjacent to its open, outer end. This groove may be of any desired cross sectional shape, preferably of rectangular cross section, and is shaped to receive a resilient split ring 19 of a width to fit into the groove. Cooperation of the ring with the bit is provided 3,347,293 Patented Oct. 17, 1967 by means of notches 20 provided in the bit, particularly at the edges of the sides thereof. During the use of the implement the ring is seated partially within the groove 17 and within the notches 20 of the bit, so that the bit is held against displacement from the grooveThe groove is of a depth at least equal to the thickness of the ring in a radial direction, so that during the removal of the bit from the socket the ring may be expanded so as to move out of the notches in the bit and is fully in the groove. The resilience of the ring is such that the ring tends to contract and thus enter into the notches of the bit unless urged outwardly during the removal of the bit.
Resilient rings of circular cross section have been employed for holding a bit in a socket. I have found however that betterresults are obtained if the ring is made of angular cross section rather than circular. For example, I prefer to form the bit with two converging sides 22 and 24 which converge toward the axis of the bit and which fit within the notches formed in the bit. These converging sides terminate at the outer portions of the ring with edges 25. Consequently, when the ring is positioned within the groove of the socket, the two edges 25 bear against the opposite sides of the groove and thus resist the movement of the ring out of the groove. With rings of circular cross section no edges of this type are formed to engage the sides of the groove, and consequently displacement of the outer ring out of the groove may result in a caming action, which facilitates such removal and could result in the dropping of the ring out of the socket when the bit is being removed.
The removal of the ring from the socket may be supplemented by providing in the socket a transverse hole or opening 27 in registration at its inner end with the groove 17 of the socket. Consequently, when the bit is removed from the socket and it is desired to remove the ring, an object with a small end can be insertecl into the hole or opening 27 to move an adjacent part of the ring out of the groove v17. The ring can then be easily engaged by a suitable hook and drawn out of the socket.
-By providing the inner portion of the ring With inclined faces 22 and 24, a greater amount of contact is provided with the notches in the bit and consequently better holding characteristics.
An outstanding feature of my improved construction of the resilient ring is that the transverse dimension of the cross sectional shape of the ring in a radial direction is materially less than in a corresponding circular ring. Consequently, the groove 17 does not have to be as deep to accommodate my improved ring as it would be to accommodate a circular ring. This is important for the reason that it makes it possible to reduce the depth of the groove and also the outside diameter of the enlargement 10. This is an important advantage where close clearances are required between the implement and the parts to be secured together by fastenings.
The angular cross sectional shape of the ring also makes it easier to install the ring in the socket because the outside diameter of the ring is smaller in relation to the socket opening than a ring of circular cross section. The ring of angular cross section as herein disclosed is easier to remove from the socket for replacement because it presents a relatively flat, or at least broad surface which may be used to contract the ring for removal. The angular relation of the inner face of the ring with the notches in the bit facilitates the removal and replacement of the bit from the socket.
My improved angular ring allows considerable latitude for adjustment of holding engagement with the bit. The cross section of the ring and the notches in the bit can be an acute angle for greater holding strength or obtuse for a more yielding engagement.
It will be understood that various changes in the details, materials and arrangements of parts which have been herein described and illustrated in order to explain the nature of the invention may be made by those skilled in the art within the principle and scope of the invention as expressed in the appended claims.
I claim:
1. An implement including a bit holder-having a socket of polygonal cross section in one end thereof,
a bit having a part of polygonal cross section formed to enter into said socket and forming a driving fit with said socket and having an outer end extending beyond said socket,
a circumferential groove in the inner wall of said socket adjacent to the outer end thereof,
said bit being provided with notches in circular arrangement about said bit and,
a resilient ring fitting into said groove of said socket and into said notches of said bit to hold said bit in said socket, said ring being of angle-shaped cross section with two convering facesextending into said notches of the bit and with a relatively flat face extending from side to side of said groove to resist discharging said ring from said groove inadvertently. 2. An implement according to claim 1 and including a radial opening in the wall of said socket spaced from the end of the socket opening in registration with a part of said groove for insertion of an object through said opening to contract said ring and move a portion thereof out of said groove to facilitate removal of the same from said socket.
References Cited UNITED STATES PATENTS 798,078 8/1905 Simpson 287135 1,649,525 11/1927 Herold 858.9 2,667,194 1/1954 Fischer et. al.
3,253,626 5/1966 StillwagOn et. al. 81l77 WILLIAM FELDMAN, Primary Examiner.
R. V. PARKER, IR., Assistant Examiner.

Claims (1)

1. AN IMPLEMENT INCLUDING A BIT HOLDER HAVING A SOCKET OF POLYGONAL CROSS SECTION IN ONE END THEREOF, A BIT HAVING A PART OF POLYGONAL CROSS SECTION FORMED TO ENTER INTO SAID SOCKET AND FORMING A DRIVING FIT WITH SAID SOCKET AND HAVING AN OUTER END EXTENDING BEYOND SAID SOCKET, A CIRCUMFERENTIAL GROOVE IN THE INNER WALL OF SAID SOCKET ADJACENT TO THE OUTER END THEREOF, SAID BIT BEING PROVIDED WITH NOTCHES IN CIRCULAR ARRANGEMENT ABOUT SAID BIT AND,
US515832A 1965-12-23 1965-12-23 Removable bit construction for screwdrivers and the like Expired - Lifetime US3347293A (en)

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Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3512387A (en) * 1967-06-21 1970-05-19 Tridan Tool & Machine Ring lock for tube expander
US3622206A (en) * 1969-06-30 1971-11-23 Cincinnati Mine Machinery Co Cutter bits and means for mounting them
US3739825A (en) * 1971-10-06 1973-06-19 Vermont American Corp Screwdriver
US3753622A (en) * 1971-09-03 1973-08-21 Super Cut Drill shank and chuck assembly for a drill press
US3817648A (en) * 1971-09-03 1974-06-18 Super Cut Drill shank and chuck assembly for a drill press
US3850056A (en) * 1971-08-19 1974-11-26 G Allen Driver tool
US3979804A (en) * 1974-12-24 1976-09-14 Mccormick Eugene C Snap ring groove vents
US4034994A (en) * 1973-05-07 1977-07-12 Kubota Engineering Co, Ltd. Tubular end structure of pipe
US4165622A (en) * 1976-04-30 1979-08-28 Bourns, Inc. Releasable locking and sealing assembly
US4274460A (en) * 1979-06-20 1981-06-23 Textron, Inc. Panel fastener joint
US4411314A (en) * 1981-07-27 1983-10-25 Sooner Oil Tools, Inc. Attachment means for use for insertion and retrieval of a casing packer
US4535658A (en) * 1982-03-05 1985-08-20 Allen Manufacturing Company Socket bit holder
US4664550A (en) * 1984-03-17 1987-05-12 Jachmann Rolf Dieter Junction piece for releasably connecting rod-shaped elements with one another
US4697832A (en) * 1986-02-18 1987-10-06 Ford Motor Company Snap lock connector
US4735536A (en) * 1986-09-26 1988-04-05 Avibank Mfg., Inc. Captive panel fastener assembly and method for installing the same
US4752163A (en) * 1987-05-05 1988-06-21 Emerson Electric Co. Thread cutting diestock assembly
US4781487A (en) * 1985-07-10 1988-11-01 Scientific Industries, Inc. Quick disconnect coupling
US5039138A (en) * 1990-02-26 1991-08-13 Ford Motor Company Cable joining assembly and method for joining cables
US5309798A (en) * 1993-03-17 1994-05-10 Inno-Ware Enterprises Limited Tool bit retaining assembly
EP0596374A1 (en) * 1992-11-02 1994-05-11 Snap-On Tools Corporation Bit with frictional retention in drive socket
US5350089A (en) * 1993-04-30 1994-09-27 K-Tron Technologies, Inc. Feeder for dispensing flowable substances
US5351586A (en) * 1993-04-08 1994-10-04 G. Lyle Habermehl Screwdriver replacement bit assembly
US5529348A (en) * 1995-02-27 1996-06-25 Dana Corporation Spring lock connector
US5746549A (en) * 1993-06-21 1998-05-05 Mapal Fabrik Fur Prazisionswerkzeuge Dr. Kress Kg Metal cutting tool
US6302001B1 (en) * 1997-10-09 2001-10-16 Willi Hahn Gmbh & Co. Kg Actuating tool
US6332382B1 (en) * 1996-02-05 2001-12-25 Wayne Anderson Tool with polygonal head for interchangeable bits
EP1260319A2 (en) * 2001-05-17 2002-11-27 Felo-Werkzeugfabrik Holland-Letz Gmbh Screw driving device for screwdriver bits
US20030038480A1 (en) * 2001-08-24 2003-02-27 Bruno Aeberhard Electric machining tool with a plurality of functional components in separate housings
US20030150301A1 (en) * 2002-02-08 2003-08-14 Hsieh Chih-Ching Wrench capable of preventing a screwed member from slipping out and holding the screwed member
US6637778B2 (en) * 2001-11-21 2003-10-28 Eaton Corporation Low permeation cam lock for plastic fuel tank vapor vent valve
US6655240B1 (en) 1997-06-02 2003-12-02 Snap-On Tools Company Insulating driver with injection molded shank and fluted working tip
US6971286B2 (en) 2002-07-22 2005-12-06 Bobby Hu Ratcheting wrench with quick tightening/loosening functions and fine adjusting functions
US20080003055A1 (en) * 2004-03-23 2008-01-03 Zf Friedrichschafen Ag Disk Carrier Comprising a Snap Ring
US20090196700A1 (en) * 2008-02-05 2009-08-06 Credo Technology Corporation Rotary tool system with centering member
USRE41260E1 (en) 2001-11-28 2010-04-27 Bobby Hu Retainer ring for securely retaining a first object to a second object
US8105367B2 (en) 2003-09-29 2012-01-31 Smith & Nephew, Inc. Bone plate and bone plate assemblies including polyaxial fasteners
US8382807B2 (en) 2005-07-25 2013-02-26 Smith & Nephew, Inc. Systems and methods for using polyaxial plates
US20150013508A1 (en) * 2013-07-02 2015-01-15 Chervon Intellectual Property Limited Bit assembly
US8940028B2 (en) 2005-07-25 2015-01-27 Smith & Nephew, Inc. Systems and methods for using polyaxial plates
US10390866B2 (en) 2011-06-15 2019-08-27 Smith & Nephew, Inc. Variable angle locking implant
US10993750B2 (en) 2015-09-18 2021-05-04 Smith & Nephew, Inc. Bone plate
US11045242B2 (en) 2016-09-22 2021-06-29 Globus Medical, Inc. Systems and methods for intramedullary nail implantation
US11073179B2 (en) * 2016-05-11 2021-07-27 Ntn Corporation Sliding-type constant velocity universal joint and method for manufacturing same
US11125525B2 (en) * 2019-03-12 2021-09-21 KNS Precision, Inc. Modular quick-change shooting platform feet
US20220097216A1 (en) * 2020-09-29 2022-03-31 Kabo Tool Company Sleeve
US20220168873A1 (en) * 2020-11-30 2022-06-02 Ming-Chang Chen Non-magnetic locking sleeve

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US798078A (en) * 1903-09-11 1905-08-29 John Simpson Screwed-pipe union.
US1649525A (en) * 1925-12-18 1927-11-15 Bassick Co Caster, slide, and the like
US2667194A (en) * 1950-05-24 1954-01-26 Apex Machine & Tool Company Composite bit screw driver
US3253626A (en) * 1964-08-03 1966-05-31 Gardner Denver Co Magnetic tool

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US798078A (en) * 1903-09-11 1905-08-29 John Simpson Screwed-pipe union.
US1649525A (en) * 1925-12-18 1927-11-15 Bassick Co Caster, slide, and the like
US2667194A (en) * 1950-05-24 1954-01-26 Apex Machine & Tool Company Composite bit screw driver
US3253626A (en) * 1964-08-03 1966-05-31 Gardner Denver Co Magnetic tool

Cited By (67)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3512387A (en) * 1967-06-21 1970-05-19 Tridan Tool & Machine Ring lock for tube expander
US3622206A (en) * 1969-06-30 1971-11-23 Cincinnati Mine Machinery Co Cutter bits and means for mounting them
US3850056A (en) * 1971-08-19 1974-11-26 G Allen Driver tool
US3753622A (en) * 1971-09-03 1973-08-21 Super Cut Drill shank and chuck assembly for a drill press
US3817648A (en) * 1971-09-03 1974-06-18 Super Cut Drill shank and chuck assembly for a drill press
US3739825A (en) * 1971-10-06 1973-06-19 Vermont American Corp Screwdriver
US4034994A (en) * 1973-05-07 1977-07-12 Kubota Engineering Co, Ltd. Tubular end structure of pipe
US3979804A (en) * 1974-12-24 1976-09-14 Mccormick Eugene C Snap ring groove vents
US4165622A (en) * 1976-04-30 1979-08-28 Bourns, Inc. Releasable locking and sealing assembly
US4274460A (en) * 1979-06-20 1981-06-23 Textron, Inc. Panel fastener joint
US4411314A (en) * 1981-07-27 1983-10-25 Sooner Oil Tools, Inc. Attachment means for use for insertion and retrieval of a casing packer
US4535658A (en) * 1982-03-05 1985-08-20 Allen Manufacturing Company Socket bit holder
US4664550A (en) * 1984-03-17 1987-05-12 Jachmann Rolf Dieter Junction piece for releasably connecting rod-shaped elements with one another
US4781487A (en) * 1985-07-10 1988-11-01 Scientific Industries, Inc. Quick disconnect coupling
US4697832A (en) * 1986-02-18 1987-10-06 Ford Motor Company Snap lock connector
US4735536A (en) * 1986-09-26 1988-04-05 Avibank Mfg., Inc. Captive panel fastener assembly and method for installing the same
US4752163A (en) * 1987-05-05 1988-06-21 Emerson Electric Co. Thread cutting diestock assembly
EP0536854A3 (en) * 1987-05-05 1993-06-16 Emerson Electric Co. Thread cutting diestock assembly
US5039138A (en) * 1990-02-26 1991-08-13 Ford Motor Company Cable joining assembly and method for joining cables
EP0596374A1 (en) * 1992-11-02 1994-05-11 Snap-On Tools Corporation Bit with frictional retention in drive socket
US5309798A (en) * 1993-03-17 1994-05-10 Inno-Ware Enterprises Limited Tool bit retaining assembly
US5351586A (en) * 1993-04-08 1994-10-04 G. Lyle Habermehl Screwdriver replacement bit assembly
US5531143A (en) * 1993-04-08 1996-07-02 G. Lyle Habermehl Screwdriver with replaceable bit assembly
US5350089A (en) * 1993-04-30 1994-09-27 K-Tron Technologies, Inc. Feeder for dispensing flowable substances
US5746549A (en) * 1993-06-21 1998-05-05 Mapal Fabrik Fur Prazisionswerkzeuge Dr. Kress Kg Metal cutting tool
US5529348A (en) * 1995-02-27 1996-06-25 Dana Corporation Spring lock connector
US6332382B1 (en) * 1996-02-05 2001-12-25 Wayne Anderson Tool with polygonal head for interchangeable bits
US6655240B1 (en) 1997-06-02 2003-12-02 Snap-On Tools Company Insulating driver with injection molded shank and fluted working tip
US6302001B1 (en) * 1997-10-09 2001-10-16 Willi Hahn Gmbh & Co. Kg Actuating tool
EP1260319A2 (en) * 2001-05-17 2002-11-27 Felo-Werkzeugfabrik Holland-Letz Gmbh Screw driving device for screwdriver bits
EP1260319A3 (en) * 2001-05-17 2005-02-23 Felo-Werkzeugfabrik Holland-Letz Gmbh Screw driving device for screwdriver bits
US20030038480A1 (en) * 2001-08-24 2003-02-27 Bruno Aeberhard Electric machining tool with a plurality of functional components in separate housings
US6862952B2 (en) * 2001-08-24 2005-03-08 Robert Bosch Gmbh Electric machining tool with a plurality of functional components in separate housings
US6637778B2 (en) * 2001-11-21 2003-10-28 Eaton Corporation Low permeation cam lock for plastic fuel tank vapor vent valve
USRE41260E1 (en) 2001-11-28 2010-04-27 Bobby Hu Retainer ring for securely retaining a first object to a second object
US20030150301A1 (en) * 2002-02-08 2003-08-14 Hsieh Chih-Ching Wrench capable of preventing a screwed member from slipping out and holding the screwed member
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