US1511797A - Saw guard - Google Patents

Saw guard Download PDF

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Publication number
US1511797A
US1511797A US692952A US69295224A US1511797A US 1511797 A US1511797 A US 1511797A US 692952 A US692952 A US 692952A US 69295224 A US69295224 A US 69295224A US 1511797 A US1511797 A US 1511797A
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Prior art keywords
support
guard
saw
sections
independent
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Expired - Lifetime
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US692952A
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Frank E Berghold
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Frank E Berghold
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27GACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G19/00Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
    • B27G19/02Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for circular saws
    • 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
    • Y10T83/95Machine frame
    • Y10T83/96Guard

Description

Fatente ct.

M, ia.

FRANK E. BEBGHOLD, OF ROCHESTER, NEW YORK.

SAW GUARD.

Application filed February 15, 1924. Serial No. 692,952.

To all whom it may concern Be it known that I, FRANK E. BERGHOLD, a citizen of the United States, residing at Rochester, in the county of 'Monroe and State of New York, have invented certain new and useful Improvements in Saw Guards; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and to the reference numerals marked thereon.

My present invention has for its object to provide an improved guard for circular saws or similar appliances which is simple in construction and adapted 'to protect the operator from contact with the saw under all circumstances, and consists in the improvements hereinafter described, the novel features being pointed out in the claims at the end of the specification.

In the accompanying drawing:

Figure l is a side elevation of a portion of a saw table showing the guard in position;

Figure 2 is a plan view of the same;

Figure 3 is aside elevation of a portion of the guard when in operation; t

Figure 4 is a sectional view on the line wm of Figure 1;

Figure 5 is a sectional view on the line 3/y of Figure 1, and

Figure 6 is a perspective view of one of the guard sections.

Similar reference numerals in the several views indicate the same parts. I

The saw table indicated by 1 is provided with the usual slot for the passage of the saw 2 or other similar cuttingtool, theedge of which projects above the table. 3 indicates a standard or supportsecured to the table in line with the saw cutting tool, and preferably of a width sufliciently narrow to pass freely throughthe kerf, as usual in devices of this description. Adjustably secured to the upper end of this standard 3 is a frame or support 4 on which the guard is mounted. In the present instance this frame or support is secured by bolts 5 and 6, the former being adjustable if desired in slots formed in the standard 3, and the bolt 6 passing through an arcuate slot formedin the standard so that the frame may be bodily tilted on the bolt 5 if desired to lift the guard from over the saw. The support l is preferably constructed of "a single piece of strap metal with its ends engaging the standard, and having the bars or arms proj ecting over the saw and separated somewhat as shown to provide a space between them.

The guard or saw shielding portion consists of a plurality of independent sections, three being shown in the present instance, indicated by 8, 9 and 10, and each composed of sheet metal having downwardly extending parallel wings a, and the upper connecting portion 6, and they are mounted upon the support 4 so as to be capable not onlyfof a tilting motion, but also of a bodily vertical movement thereon. The lower forward edges of the depending wingsof the guard sections are rounded as shown, and the forward end (i. e. that first engaged by the 'work) of each has a loose guiding and pivotal connection with the support formed, in the present instance by'the vertically extend ing slots 11 in the depending portions, for the reception of transversely extending pins and rlvets secured to the side bars of the support 4;. The pins or rivets while permitting free vertical movementserve to maintain the sections in proper position longitudinally of the supporting arm. The adjacent guard sections have their depending wings or sides arranged in different vertical planes and preferably alternately outside of and bethesection 9 is arranged between the side bars, and the section 10 is arranged similarly to section 8. The rivet or pin 12 operating in the slots 11 of the section 8 is secured rigidly to the forward end of support 4,

while the projections or rivets 13 upon which the guard plate 10 is guided, are separately secured to the-sides of the supports, as

shown particularly in Figure 4:.

The intermediate guard section 9 is mounted between the arms of the support and is supported at its rear end also by means of projections extending from op o site sides at its rear end, and adapted to rest on top of the support, and in the present instance these projections are formed by the ends of a pin 14 extending through both sides of the section and secured thereto by riveting or otherwise, as shown more particularly in Figure 5. The upper surfaces *of the guard section immediately over the supporting or pivot pins are cut away as shown, to prevent the sections interfering Wll3l1 each other Wh n raised. or tilted, bu

the apertures thus" formed are relativel small, and not only do not permit the outward passage of sawdust, but rather assist,

in causing it to be carried down throughthe slot in thetable by admitting air through itheseiopenings tot-he current-created by the rapid rotation of the saw, thus effectually preventing the-escape of the sawdust into 7 the. .air.

--'In operation, with'the sawirotating in the direction,indicated by the arrow, the ma- 7 v. terialto'he sawed, isepassed tothe saw under the. guard, the firstwsection' 9 ti t g on its "pivotpin, as; shown in dotted lines in Figure '1, and as, the materi l passes; under it, is

i moved bodily upwardfand after. passing :t is section thetel owing secti ns are lifted inza mila manner, first-til ing and then risingvert-ieally being guided by. the rivets V theposition shown in Figure l and the, lower" end of the wings drop in behind the board to, prevent theba ard mo ement o the board, if, by reason of a knot or 7 other ob,-

struction there Werea'ny tendencyto move back toward "the operator, the upper edge "ofrthis section-then engaging the forward edges of the wings of the second section, as

shown-tin said figure so that there is. no'da-n-' gerjof the operator being struck by material being thrownbackward. during the sawing peratio 1 Y f ."The. ,co s ue Q n'lsh $011M tvolbe ti 1 r1y= dvantageous, and y reasgn Of he factrthat the ec ensia mad fr m sheet metama r l a i y amp d n formedby. dies into the required shape, and

' the. rm that he'sec n a stant lly skilled operators niform, guards for a great variety of saws,

bemad ch p y and'as m led; y 11 Al houg -.1 pref r f r rea on of conomy and s rapli tytc e n; the loose P o l V neetionbetwe n the support and uard seeti ns by form ng lo s in e W ngs de P per iensnnd. he pins. n he sun n -t, other g ding c nnec ions tor prod ng a siml r snlt could. be employed:

- Ihave shown h reinQ hh ees ar sect ens, but ebrieus that-@- greater and b r nnld he empl yed if desired, theelative.arrangement-b ingmain ained,

claimassis -invention=:

g rdfeo pr s n a seat, an animate-sf: n en a eat dep nding sear-d sections loosely. mounted onthe supportand capable of independent vertical bodily movement thereon, and means for maintaining their relative position longitudinally of the support.

2. A saw guard comprising a support extending over the saw, a plurality of independent depending guard sections loosely mounted on the support and capable of independent vertical bodily movement thereon and guiding means between said support and the sections arranged at the forward ends of the latter. v

3. A saw guard comprising a suppor t,-a

plurality of independent guard sections loosely 'suspendedfrom'and permitted free bodily vertical movement thereon and loose guiding. and pivotal connections between the forward portions of the sections and the support.

4:; A saw guard comprising a support, a plurality of guard sections loosely' suspended from and permitted independent" free bodily vertical movement thereon, looselpivotal and guiding connections substantially as described, between one of the ends of each of the sections and the support permitting pivotal movement in any position of. vertical adjustment. 1

.5. A saw comprising a support, aplurality of independent guard sections loosely suspended from and permitted free and independent vertical bodily movement thereon, loose pivotal and guiding connections substantially as described between the guard sections and support permitting pivotal movement in anyposition of vertical adjustment, the ends of adjacent guard sections being arranged in different vertical planes to permit independent tilting movement on the pivots.

6. A saw guard comprising a support, a plurality of guard sections loosely support- "ed thereon, theedges of adjacent-sections being arranged out of line with each other, and loose pivotal connections substantially as described, between the sections and the supportfojr maintaining them in their relative positions longitudinally of the support, but permitting their independent vertical and tilting movements when engaged by the work.

a 7. A saw guard comprising a support embodying substantially parallel arms, a pin;

rality of independent guard sections having depending portions to cover the saw" and suspended loosely from the support, said sections being alternately arranged between and outside of the arms of the support.

8.-A saw guard comprising a supportembodyin'g snbstantiall arallel arms; a splurality of independent guard sections having depending portions to cover the saw, the adj-acent sections eX-tendin alternately outside of and between the'arms of the support and loose pivotal connections between; the C:- tions and the support preventing their movement longitudinally of the arms but permitting their independent vertical and tilting movement thereon.

9. A saw guard comprising a support embodying substantially parallel arms, independent guard sections having depending side portions to cover the saw and a connecting portion at the top, the adjacent sections being arranged with their depending portions alternately outside of and between the arms of the support and loose pivotal and guiding connections between one edge of each of the guard sections and the support to prevent movement longitudinally thereof.

10. A saw guard comprising a support embodying parallel arms, a plurality of guard sections having depending portions to cover the saw and connecting portions at the top,

the depending portions of adjacent sections being located alternately outside of and between the arms of the support, said depending portions having vertical slots at their forward edges and stationary guides on the support located in said slots.

11. A saw guard comprising a support having the parallel arms, a plurality of independent guard sections supported thereon composed of a single piece of sheet metal having the sides or depending portions provided with vertical slots and an upper connecting portion, the adjacent sections being located alternately outside of and between the arms of the support, and guide pins on the support engaging in said slots.

FRANK E. BERGHOLD.

US692952A 1924-02-15 1924-02-15 Saw guard Expired - Lifetime US1511797A (en)

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Cited By (58)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2425331A (en) * 1945-12-13 1947-08-12 Linzie F Kramer Guard device for circular-saw table sawing machines
US2538456A (en) * 1949-06-07 1951-01-16 Jr Charles E Howe Protective guard attachment for band saws
FR2543873A1 (en) * 1983-04-05 1984-10-12 Mugnier Joachim Improvements to suction devices for circular saws
FR2561570A1 (en) * 1984-03-26 1985-09-27 Acma Denninger Protection device for an edging circular sawing machine using a cap with strips
US20020017178A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Motion detecting system for use in a safety system for power equipment
US20020017183A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Cutting tool safety system
US20020017181A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Retraction system for use in power equipment
US20020017182A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Brake positioning system
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
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
US20020020271A1 (en) * 2000-08-14 2002-02-21 Gass Stephen F. Spring-biased brake mechanism for power equipment
US20020056349A1 (en) * 2000-09-29 2002-05-16 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
US20020056348A1 (en) * 2000-09-29 2002-05-16 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
US20020059855A1 (en) * 2000-09-29 2002-05-23 Gass Stephen F. Miter saw with improved safety system
US20020066346A1 (en) * 2000-09-29 2002-06-06 Gass Stephen F. Miter saw with improved safety system
US20020170400A1 (en) * 2001-05-17 2002-11-21 Gass Stephen F. Band saw with improved safety system
US20020170399A1 (en) * 1999-10-01 2002-11-21 Gass Stephen F. Safety systems for power equipment
US20030015253A1 (en) * 2001-07-18 2003-01-23 Gass Stephen F. Router with improved safety system
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
US20030058121A1 (en) * 2001-09-24 2003-03-27 Gass Stephen F. Logic control with test mode for fast-acting safety system
US20030056853A1 (en) * 2001-09-21 2003-03-27 Gass Stephen F. Router with improved 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
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
US20050139057A1 (en) * 2003-12-31 2005-06-30 Gass Stephen F. Table saws with safety systems
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
US20050155473A1 (en) * 2003-12-31 2005-07-21 Gass Stephen F. Dectection systems for power equipment
US20050178259A1 (en) * 2001-08-13 2005-08-18 Gass Stephen F. Miter saw with improved safety system
US6945149B2 (en) 2001-07-25 2005-09-20 Sd3, Llc Actuators for use in fast-acting safety systems
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
US7137326B2 (en) 2000-08-14 2006-11-21 Sd3, Llc Translation stop for use in 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
US7284467B2 (en) 2000-08-14 2007-10-23 Sd3, Llc Apparatus and method for detecting dangerous conditions in power equipment
US7347851B1 (en) 2004-03-09 2008-03-25 Leo B Kriksunov Needleless hypodermic jet injector apparatus and method
US7350444B2 (en) 2000-08-14 2008-04-01 Sd3, Llc Table saw with improved safety system
US7472634B2 (en) 2003-08-20 2009-01-06 Sd3, Llc Woodworking machines with overmolded arbors
US7712403B2 (en) 2001-07-03 2010-05-11 Sd3, Llc Actuators for use in fast-acting safety systems
US20100147125A1 (en) * 2008-12-16 2010-06-17 Georg Stellmann Power tool
US7827890B2 (en) 2004-01-29 2010-11-09 Sd3, Llc Table saws with safety systems and systems to mount and index attachments
US7836804B2 (en) 2003-08-20 2010-11-23 Sd3, Llc Woodworking machines with overmolded arbors
US8079295B2 (en) 2008-06-20 2011-12-20 Sd3, Llc Table saw blade guards and blade guard assemblies including lateral blade guards, and table saws including the same
US8186255B2 (en) 2000-09-29 2012-05-29 Sd3, Llc Contact detection system for power equipment
US20130055869A1 (en) * 2002-11-01 2013-03-07 Black & Decker Inc. Tile Saw
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 (125)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2425331A (en) * 1945-12-13 1947-08-12 Linzie F Kramer Guard device for circular-saw table sawing machines
US2538456A (en) * 1949-06-07 1951-01-16 Jr Charles E Howe Protective guard attachment for band saws
FR2543873A1 (en) * 1983-04-05 1984-10-12 Mugnier Joachim Improvements to suction devices for circular saws
FR2561570A1 (en) * 1984-03-26 1985-09-27 Acma Denninger Protection device for an edging circular sawing machine using a cap with strips
US9969014B2 (en) 1999-10-01 2018-05-15 Sawstop Holding 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
US7788999B2 (en) 1999-10-01 2010-09-07 Sd3, Llc Brake mechanism for power equipment
US7895927B2 (en) 1999-10-01 2011-03-01 Sd3, Llc Power equipment with detection and reaction 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
US8196499B2 (en) 1999-10-01 2012-06-12 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
US10335972B2 (en) 1999-10-01 2019-07-02 Sawstop Holding Llc Table Saws
US9522476B2 (en) 1999-10-01 2016-12-20 Sd3, Llc Power equipment with detection and reaction systems
US20060000337A1 (en) * 1999-10-01 2006-01-05 Gass Stephen F Band saw with safety system
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
US20020170399A1 (en) * 1999-10-01 2002-11-21 Gass Stephen F. Safety systems for power equipment
US7350444B2 (en) 2000-08-14 2008-04-01 Sd3, Llc Table saw with improved safety system
US7225712B2 (en) 2000-08-14 2007-06-05 Sd3, Llc Motion detecting system for use in a safety system for power equipment
US7228772B2 (en) 2000-08-14 2007-06-12 Sd3, Llc Brake positioning system
US7284467B2 (en) 2000-08-14 2007-10-23 Sd3, Llc Apparatus and method for detecting dangerous conditions in power equipment
US7600455B2 (en) 2000-08-14 2009-10-13 Sd3, Llc Logic control for fast-acting safety system
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
US7359174B2 (en) 2000-08-14 2008-04-15 Sd3, Llc Motion detecting system for use in a safety system for power equipment
US20020020271A1 (en) * 2000-08-14 2002-02-21 Gass Stephen F. Spring-biased brake mechanism for power equipment
US20020020262A1 (en) * 2000-08-14 2002-02-21 Gass Stephen F. Logic control for fast-acting safety system
US8191450B2 (en) 2000-08-14 2012-06-05 Sd3, Llc Power equipment with detection and reaction systems
US7210383B2 (en) 2000-08-14 2007-05-01 Sd3, Llc Detection system for power equipment
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
US8100039B2 (en) 2000-08-14 2012-01-24 Sd3, Llc Miter saw with safety system
US20020017180A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Brake mechanism for power equipment
US7137326B2 (en) 2000-08-14 2006-11-21 Sd3, Llc Translation stop for use in power equipment
US7921754B2 (en) 2000-08-14 2011-04-12 Sd3, Llc Logic control for fast-acting safety system
US20050139051A1 (en) * 2000-08-14 2005-06-30 Gass Stephen F. Brake positioning system
US20020017179A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Miter saw with improved safety system
US7832314B2 (en) 2000-08-14 2010-11-16 Sd3, Llc Brake positioning system
US6920814B2 (en) 2000-08-14 2005-07-26 Sd3, Llc Cutting tool safety system
US20020017182A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Brake positioning system
US20020017181A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Retraction system for use in power equipment
US7681479B2 (en) 2000-08-14 2010-03-23 Sd3, Llc Motion detecting system for use in a safety system for power equipment
US7100483B2 (en) 2000-08-14 2006-09-05 Sd3, Llc Firing subsystem for use in a fast-acting safety 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
US7308843B2 (en) 2000-08-14 2007-12-18 Sd3, Llc Spring-biased brake mechanism for power equipment
US8151675B2 (en) 2000-08-14 2012-04-10 Sd3, Llc Logic control for fast-acting safety system
US7024975B2 (en) 2000-08-14 2006-04-11 Sd3, Llc Brake mechanism for power equipment
US7509899B2 (en) 2000-08-14 2009-03-31 Sd3, Llc Retraction system for use in power equipment
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
US20020066346A1 (en) * 2000-09-29 2002-06-06 Gass Stephen F. Miter saw with improved safety system
US7784507B2 (en) 2000-09-29 2010-08-31 Sd3, Llc Router with improved safety system
US20050252187A1 (en) * 2000-09-29 2005-11-17 Gass Stephen F Cutting tool safety system
US6877410B2 (en) 2000-09-29 2005-04-12 Sd3, Llc Miter saw with improved safety system
US8186255B2 (en) 2000-09-29 2012-05-29 Sd3, Llc Contact detection system for power equipment
US20060123964A1 (en) * 2000-09-29 2006-06-15 Gass Stephen F Table 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
US7357056B2 (en) 2000-09-29 2008-04-15 Sd3, Llc Cutting tool 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
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
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
US20030015253A1 (en) * 2001-07-18 2003-01-23 Gass Stephen F. Router with improved safety system
US6945149B2 (en) 2001-07-25 2005-09-20 Sd3, Llc Actuators for use in fast-acting safety systems
US20030019341A1 (en) * 2001-07-27 2003-01-30 Gass Stephen F. Safety systems for band saws
US20040163514A1 (en) * 2001-08-13 2004-08-26 Gass Stephen F. Safety systems for power equipment
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