US509253A - Safety-guard for rip-saws - Google Patents

Safety-guard for rip-saws Download PDF

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Publication number
US509253A
US509253A US509253DA US509253A US 509253 A US509253 A US 509253A US 509253D A US509253D A US 509253DA US 509253 A US509253 A US 509253A
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Prior art keywords
guard
saws
saw
rod
rip
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Expired - Lifetime
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23DPLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D47/00Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts
    • B23D47/02Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts of frames; of guiding arrangements for work-table or saw-carrier
    • B23D47/025Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts of frames; of guiding arrangements for work-table or saw-carrier of tables
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/768Rotatable disc tool pair or tool and carrier
    • Y10T83/7684With means to support work relative to tool[s]
    • Y10T83/773Work-support includes passageway for tool [e.g., slotted table]
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/768Rotatable disc tool pair or tool and carrier
    • Y10T83/7734With guard for tool

Definitions

  • Figure 1 of the drawings is a top plan view.
  • Fig. 2 is a vertical longitudinal section, and
  • Fig. 3 are views in detail.
  • This invention has relation to safety guards for circular or rip 'saws, the object being to provide a simple and efiective device for saws of this character, by means of which not only will the hands of the operator be prevented from coming in contact with the saw, but which will also protect his face and body from injury by flying splinters or slivers; and the invention consists in the novel construction and combination of parts, all as hereinafter described.
  • the letter A designates a saw table
  • B the saw hung therein in the customary manner
  • O is the gage ordinarily employed upon saw tables.
  • a standard D Secured upon the table near a lateral edge thereof is a standard D, having therein a vertical bore, in which is held a rod E which is arranged to slide up and down in said bore, and is held to the proper adjustment by means of a set-screw a. Said rod E is also capable of a rotary movement in said standard.
  • a spring E is placed in said standard underneath the rod E.
  • On the upper end of said rod is an enlarged portion 12, having therethrough a horizontal aperture, in which is adjustably held by a screw 0, a horizontal arm F, which terminates over the highest portion of the saw, and carries thereat a coupling piece G. Passing perpendicularly through said coupling is a rod H, which at its lower portion has a screw-thread for engage- Serial No. 468,488- (No model.)
  • a spiral spring 01, with clamp screw d may be used either above or below the coupling G.
  • K designates the guard proper, which consists of a curved piece of spring metal, held by the clamp I over the saw, and which is extended out at the lower frontedge of the blade, as shown at h, such extended portion being turned upwardly in order to facilitate the entrance of the board or other lumber to the saw.
  • the guard is usually made in two pieces, joined at the clamp with their meeting ends overlapping each other, so that by loosening the clamp, the two parts may be extended upon each other, or contracted, in order to suit the guard to saws of different diameters, the other parts, as will be apparent from the above description, also being capable of adj ustment for this purpose.
  • a spring L may be arranged to bear thereon, the tension of said spring being controlled by a screw L.
  • the standard D may be held in a socket piece M, in which said standard is arranged to slip in and out at will.
  • This socket piece is preferably embedded in the table flush with the top thereof.
  • the construction readily permits the guard to be swung around and away from the saw at pleasure.
  • the herein described saw guard comprising a standard D supported upon a saw table, and having therein a vertical bore, a rod E, capable of a vertical and a rotary movement in, said bore, a horizontal arm F connected to the said rod E, and extendedto a point over the saw, a coupling piece G carried by said arm F, a vertical rod H held adjustably in said coupling piece, a clamp block I having a threaded engagement with the lower end of said rod H, and the guard proper comprising two curved plates of spring metal united and held by said clamp and arched over the periphery of the saw, said plates having their lower end portions curved upwardly from said table, substantially as specified.

Description

(No Modem 'G. A. SHIELDS.
SAFETY GUARD FOR RIP SAWS.
No. 509,253. Patented Nov. 21, 1893,
TEL-Z.- .1. ,ifi v1 WITJVESSES w INVENTOR citizen of the United States, and a resident of "UN TE STATES PATENT ()FFICE.
A. SHIELDS, OF ANDERSON, INDIANA.
SAFETY-GUARD FOR RIP-SAWS.
J SPECIFICATION forming part of Letters Patent No. 509,253, dated November 21, 1893.
Application filed March 31,1893.
To all whom it may concern:
Be it known that I, GEORGE A. SHIELDS, a.
Anderson, in thecounty of Madison and State of Indiana, have invented certain new and useful Improvements in Safety-Guards for Rip-Saws and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.
Figure 1 of the drawings is a top plan view. Fig. 2 is a vertical longitudinal section, and Fig. 3 are views in detail.
This invention has relation to safety guards for circular or rip 'saws, the object being to provide a simple and efiective device for saws of this character, by means of which not only will the hands of the operator be prevented from coming in contact with the saw, but which will also protect his face and body from injury by flying splinters or slivers; and the invention consists in the novel construction and combination of parts, all as hereinafter described.
Referring to the accompanying drawings in which I have shown a very convenient application of the invention, the letter A designates a saw table, B the saw hung therein in the customary manner, and O is the gage ordinarily employed upon saw tables.
- Secured upon the table near a lateral edge thereof is a standard D, having therein a vertical bore, in which is held a rod E which is arranged to slide up and down in said bore, and is held to the proper adjustment by means of a set-screw a. Said rod E is also capable of a rotary movement in said standard. A spring E is placed in said standard underneath the rod E. On the upper end of said rod is an enlarged portion 12, having therethrough a horizontal aperture, in which is adjustably held by a screw 0, a horizontal arm F, which terminates over the highest portion of the saw, and carries thereat a coupling piece G. Passing perpendicularly through said coupling is a rod H, which at its lower portion has a screw-thread for engage- Serial No. 468,488- (No model.)
ment with a clamp block I. Said rod H is held to the proper vertical adjustment by means of a set-screw d. A spiral spring 01, with clamp screw d may be used either above or below the coupling G.
K designates the guard proper, which consists of a curved piece of spring metal, held by the clamp I over the saw, and which is extended out at the lower frontedge of the blade, as shown at h, such extended portion being turned upwardly in order to facilitate the entrance of the board or other lumber to the saw.
The guard is usually made in two pieces, joined at the clamp with their meeting ends overlapping each other, so that by loosening the clamp, the two parts may be extended upon each other, or contracted, in order to suit the guard to saws of different diameters, the other parts, as will be apparent from the above description, also being capable of adj ustment for this purpose.
In order to hold the portion hot the guard more solidly and rigidly to its bearing position, a spring L may be arranged to bear thereon, the tension of said spring being controlled by a screw L.
When the guard is made of extra strong spring metal, it is advisable to employ small anti-friction rollers, which are journaled in the horizontal extensions h, h at the ends of the guard, to assist in moving the lumber forced thereunder. These may however be omitted.
The standard D may be held in a socket piece M, in which said standard is arranged to slip in and out at will. This socket piece is preferably embedded in the table flush with the top thereof.
The construction readily permits the guard to be swung around and away from the saw at pleasure.
Having described this invention, what I claim, and desire to secure by Letters Patent, 1s
1. The herein described saw guard, comprising a standard D supported upon a saw table, and having therein a vertical bore, a rod E, capable of a vertical and a rotary movement in, said bore, a horizontal arm F connected to the said rod E, and extendedto a point over the saw, a coupling piece G carried by said arm F, a vertical rod H held adjustably in said coupling piece, a clamp block I having a threaded engagement with the lower end of said rod H, and the guard proper comprising two curved plates of spring metal united and held by said clamp and arched over the periphery of the saw, said plates having their lower end portions curved upwardly from said table, substantially as specified.
2. The combination of the saw table and saws, of the standard supported upon said table, the socket piece in which said stand ard is held, the rod adjustably supported in said standard, the spring upon which said rod seats, an arm carried by said rod, and extending over the saw, a spring for said arm,
US509253D Safety-guard for rip-saws Expired - Lifetime US509253A (en)

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Cited By (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2487396A (en) * 1948-01-19 1949-11-08 Summers Theodore Warning guard for saws
US3105530A (en) * 1961-10-23 1963-10-01 Russell E Peterson Guard for a circular table saw
US20020017336A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Apparatus and method for detecting dangerous conditions in power equipment
US20020017179A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Miter saw with improved safety system
US20020017180A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Brake mechanism for power equipment
US20020017182A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Brake positioning system
US20020017183A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Cutting tool safety system
US20020017178A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Motion detecting system for use in a safety system for power equipment
US20020017181A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Retraction system for use in power equipment
US20020017175A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Translation stop for use in power equipment
US20020017184A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Table saw with improved safety system
US20020020271A1 (en) * 2000-08-14 2002-02-21 Gass Stephen F. Spring-biased brake mechanism for power equipment
US20020020265A1 (en) * 2000-08-14 2002-02-21 Gass Stephen F. Translation stop for use in power equipment
US20020020263A1 (en) * 2000-08-14 2002-02-21 Gass Stephen F. Firing subsystem for use in a fast-acting safety system
US20020020262A1 (en) * 2000-08-14 2002-02-21 Gass Stephen F. Logic control for fast-acting safety system
US20020056350A1 (en) * 2000-09-29 2002-05-16 Gass Stephen F. Table saw with improved safety system
US20020056348A1 (en) * 2000-09-29 2002-05-16 Gass Stephen F. Miter saw with improved safety system
US20020056349A1 (en) * 2000-09-29 2002-05-16 Gass Stephen F. Miter saw with improved safety system
US20020059855A1 (en) * 2000-09-29 2002-05-23 Gass Stephen F. Miter saw with improved safety system
US20020059853A1 (en) * 2000-09-29 2002-05-23 Gass Stephen F. Power saw with improved safety system
US20020066346A1 (en) * 2000-09-29 2002-06-06 Gass Stephen F. Miter saw with improved safety system
US20020170399A1 (en) * 1999-10-01 2002-11-21 Gass Stephen F. Safety systems for power equipment
US20020170400A1 (en) * 2001-05-17 2002-11-21 Gass Stephen F. Band saw with improved safety system
US20030015253A1 (en) * 2001-07-18 2003-01-23 Gass Stephen F. Router with improved safety system
US20030020336A1 (en) * 2001-07-25 2003-01-30 Gass Stephen F. Actuators for use in fast-acting safety systems
US20030019341A1 (en) * 2001-07-27 2003-01-30 Gass Stephen F. Safety systems for band saws
US20030037651A1 (en) * 2001-08-13 2003-02-27 Gass Stephen F. Safety systems for power equipment
US20030056853A1 (en) * 2001-09-21 2003-03-27 Gass Stephen F. Router with improved safety system
US20030058121A1 (en) * 2001-09-24 2003-03-27 Gass Stephen F. Logic control with test mode for fast-acting safety system
US20030090224A1 (en) * 2001-11-13 2003-05-15 Gass Stephen F. Detection system for power equipment
US20030131703A1 (en) * 2002-01-16 2003-07-17 Gass Stephen F. Apparatus and method for detecting dangerous conditions in power equipment
US20030140749A1 (en) * 2002-01-25 2003-07-31 Gass Stephen F. Brake Pawls for power equipment
US20040040426A1 (en) * 2002-08-27 2004-03-04 Gass Stephen F. Miter saw with improved safety system
US20040173430A1 (en) * 2003-03-05 2004-09-09 Gass Stephen F. Retraction system and motor position for use with safety systems for power equipment
US20050039586A1 (en) * 2003-08-20 2005-02-24 Gass Stephen F. Brake cartridges for power equipment
US20050041359A1 (en) * 2003-08-20 2005-02-24 Gass Stephen F. Motion detecting system for use in a safety system for power equipment
US20050039822A1 (en) * 2003-08-20 2005-02-24 Gass Stephen F. Woodworking machines with overmolded arbors
US20050139459A1 (en) * 2003-12-31 2005-06-30 Gass Stephen F. Switch box for power tools with safety systems
US20050139058A1 (en) * 2003-12-31 2005-06-30 Gass Stephen F. Brake cartridges and mounting systems for brake cartridges
US20050139057A1 (en) * 2003-12-31 2005-06-30 Gass Stephen F. Table saws with safety systems
US20050155473A1 (en) * 2003-12-31 2005-07-21 Gass Stephen F. Dectection systems for power equipment
US20050166736A1 (en) * 2004-01-29 2005-08-04 Gass Stephen F. Table saws with safety systems and systems to mount and index attachments
US20050178259A1 (en) * 2001-08-13 2005-08-18 Gass Stephen F. Miter saw with improved safety system
US20050204885A1 (en) * 2002-01-14 2005-09-22 Gass Stephen F Miter saw with improved safety system
US20050252187A1 (en) * 2000-09-29 2005-11-17 Gass Stephen F Cutting tool safety system
US20060032352A1 (en) * 2000-09-18 2006-02-16 Gass Stephen F Translation stop for use in power equipment
US7055417B1 (en) 1999-10-01 2006-06-06 Sd3, Llc Safety system for power equipment
US20060247795A1 (en) * 2005-04-15 2006-11-02 Gass Stephen F Detection systems for power equipment
US7171879B2 (en) 2001-07-02 2007-02-06 Sd3, Llc Discrete proximity detection system
US7210383B2 (en) 2000-08-14 2007-05-01 Sd3, Llc Detection system for power equipment
US7347851B1 (en) 2004-03-09 2008-03-25 Leo B Kriksunov Needleless hypodermic jet injector apparatus and method
US7712403B2 (en) 2001-07-03 2010-05-11 Sd3, Llc Actuators for use in fast-acting safety systems
US7836804B2 (en) 2003-08-20 2010-11-23 Sd3, Llc Woodworking machines with overmolded arbors
US8082825B2 (en) 2009-06-09 2011-12-27 Butler David J Health and safety system for a table saw
US8186255B2 (en) 2000-09-29 2012-05-29 Sd3, Llc Contact detection system for power equipment
US10118308B2 (en) 2013-10-17 2018-11-06 Sawstop Holding Llc Systems to mount and index riving knives and spreaders in table saws

Cited By (124)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2487396A (en) * 1948-01-19 1949-11-08 Summers Theodore Warning guard for saws
US3105530A (en) * 1961-10-23 1963-10-01 Russell E Peterson Guard for a circular table saw
US20060000337A1 (en) * 1999-10-01 2006-01-05 Gass Stephen F Band saw with safety system
US8196499B2 (en) 1999-10-01 2012-06-12 Sd3, Llc Power equipment with detection and reaction systems
US7621205B2 (en) 1999-10-01 2009-11-24 Sd3, Llc Band saw with safety system
US7525055B2 (en) 1999-10-01 2009-04-28 Sd3, Llc Switch box for power tools with safety systems
US7347131B2 (en) 1999-10-01 2008-03-25 Sd3, Llc Miter saw with improved safety system
US7055417B1 (en) 1999-10-01 2006-06-06 Sd3, Llc Safety system for power equipment
US20020170399A1 (en) * 1999-10-01 2002-11-21 Gass Stephen F. Safety systems for power equipment
US7895927B2 (en) 1999-10-01 2011-03-01 Sd3, Llc Power equipment with detection and reaction systems
US8408106B2 (en) 1999-10-01 2013-04-02 Sd3, Llc Method of operating power equipment with detection and reaction systems
US9522476B2 (en) 1999-10-01 2016-12-20 Sd3, Llc Power equipment with detection and reaction systems
US9724840B2 (en) 1999-10-01 2017-08-08 Sd3, Llc Safety systems for power equipment
US9925683B2 (en) 1999-10-01 2018-03-27 Sawstop Holding Llc Table saws
US9969014B2 (en) 1999-10-01 2018-05-15 Sawstop Holding Llc Power equipment with detection and reaction systems
US10335972B2 (en) 1999-10-01 2019-07-02 Sawstop Holding Llc Table Saws
US7788999B2 (en) 1999-10-01 2010-09-07 Sd3, Llc Brake mechanism for power equipment
US7284467B2 (en) 2000-08-14 2007-10-23 Sd3, Llc Apparatus and method for detecting dangerous conditions in power equipment
US7350444B2 (en) 2000-08-14 2008-04-01 Sd3, Llc Table saw with improved safety system
US20020017336A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Apparatus and method for detecting dangerous conditions in power equipment
US20020017179A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Miter saw with improved safety system
US7681479B2 (en) 2000-08-14 2010-03-23 Sd3, Llc Motion detecting system for use in a safety system for power equipment
US20020017180A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Brake mechanism for power equipment
US7600455B2 (en) 2000-08-14 2009-10-13 Sd3, Llc Logic control for fast-acting safety system
US7921754B2 (en) 2000-08-14 2011-04-12 Sd3, Llc Logic control for fast-acting safety system
US20020017182A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Brake positioning system
US7509899B2 (en) 2000-08-14 2009-03-31 Sd3, Llc Retraction system for use in power equipment
US7359174B2 (en) 2000-08-14 2008-04-15 Sd3, Llc Motion detecting system for use in a safety system for power equipment
US8100039B2 (en) 2000-08-14 2012-01-24 Sd3, Llc Miter saw with safety system
US8151675B2 (en) 2000-08-14 2012-04-10 Sd3, Llc Logic control for fast-acting safety system
US20020017183A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Cutting tool safety system
US7308843B2 (en) 2000-08-14 2007-12-18 Sd3, Llc Spring-biased brake mechanism for power equipment
US7832314B2 (en) 2000-08-14 2010-11-16 Sd3, Llc Brake positioning system
US7228772B2 (en) 2000-08-14 2007-06-12 Sd3, Llc Brake positioning system
US20020020262A1 (en) * 2000-08-14 2002-02-21 Gass Stephen F. Logic control for fast-acting safety system
US6857345B2 (en) 2000-08-14 2005-02-22 Sd3, Llc Brake positioning system
US20020020263A1 (en) * 2000-08-14 2002-02-21 Gass Stephen F. Firing subsystem for use in a fast-acting safety system
US20020020265A1 (en) * 2000-08-14 2002-02-21 Gass Stephen F. Translation stop for use in power equipment
US20020020271A1 (en) * 2000-08-14 2002-02-21 Gass Stephen F. Spring-biased brake mechanism for power equipment
US7225712B2 (en) 2000-08-14 2007-06-05 Sd3, Llc Motion detecting system for use in a safety system for power equipment
US9038515B2 (en) 2000-08-14 2015-05-26 Sd3, Llc Logic control for fast-acting safety system
US8522655B2 (en) 2000-08-14 2013-09-03 Sd3, Llc Logic control for fast-acting safety system
US20050139051A1 (en) * 2000-08-14 2005-06-30 Gass Stephen F. Brake positioning system
US20020017184A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Table saw with improved safety system
US20020017175A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Translation stop for use in power equipment
US6920814B2 (en) 2000-08-14 2005-07-26 Sd3, Llc Cutting tool safety system
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US20020017178A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Motion detecting system for use in a safety system for power equipment
US7024975B2 (en) 2000-08-14 2006-04-11 Sd3, Llc Brake mechanism for power equipment
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US8065943B2 (en) 2000-09-18 2011-11-29 Sd3, Llc Translation stop for use in power equipment
US20060032352A1 (en) * 2000-09-18 2006-02-16 Gass Stephen F Translation stop for use in power equipment
US20020056348A1 (en) * 2000-09-29 2002-05-16 Gass Stephen F. Miter saw with improved safety system
US8061245B2 (en) 2000-09-29 2011-11-22 Sd3, Llc Safety methods for use in power equipment
US20020059853A1 (en) * 2000-09-29 2002-05-23 Gass Stephen F. Power saw with improved safety system
US20060123964A1 (en) * 2000-09-29 2006-06-15 Gass Stephen F Table saw with improved safety system
US7784507B2 (en) 2000-09-29 2010-08-31 Sd3, Llc Router with improved safety system
US8186255B2 (en) 2000-09-29 2012-05-29 Sd3, Llc Contact detection system for power equipment
US7357056B2 (en) 2000-09-29 2008-04-15 Sd3, Llc Cutting tool safety system
US20050252187A1 (en) * 2000-09-29 2005-11-17 Gass Stephen F Cutting tool safety system
US20020059855A1 (en) * 2000-09-29 2002-05-23 Gass Stephen F. Miter saw with improved safety system
US6877410B2 (en) 2000-09-29 2005-04-12 Sd3, Llc Miter saw with improved safety system
US20020066346A1 (en) * 2000-09-29 2002-06-06 Gass Stephen F. Miter saw with improved safety system
US20020056350A1 (en) * 2000-09-29 2002-05-16 Gass Stephen F. Table saw with improved safety system
US20020056349A1 (en) * 2000-09-29 2002-05-16 Gass Stephen F. Miter saw with improved safety system
US20050274432A1 (en) * 2000-09-29 2005-12-15 Gass Stephen F Router with improved safety system
US20020170400A1 (en) * 2001-05-17 2002-11-21 Gass Stephen F. Band saw with improved safety system
US7591210B2 (en) 2001-07-02 2009-09-22 Sd3, Llc Discrete proximity detection system
US7171879B2 (en) 2001-07-02 2007-02-06 Sd3, Llc Discrete proximity detection system
US7712403B2 (en) 2001-07-03 2010-05-11 Sd3, Llc Actuators for use in fast-acting safety systems
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US20030019341A1 (en) * 2001-07-27 2003-01-30 Gass Stephen F. Safety systems for band saws
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US20060123960A1 (en) * 2001-08-13 2006-06-15 Gass Stephen F Safety systems for power equipment
US20030056853A1 (en) * 2001-09-21 2003-03-27 Gass Stephen F. Router with improved safety system
US20030058121A1 (en) * 2001-09-24 2003-03-27 Gass Stephen F. Logic control with test mode for fast-acting safety system
US20030090224A1 (en) * 2001-11-13 2003-05-15 Gass Stephen F. Detection system for power equipment
US7421315B2 (en) 2001-11-13 2008-09-02 Sd3, Llc Detection system for power equipment
US7290472B2 (en) 2002-01-14 2007-11-06 Sd3, Llc Miter saw with improved safety system
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US20030131703A1 (en) * 2002-01-16 2003-07-17 Gass Stephen F. Apparatus and method for detecting dangerous conditions in power equipment
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