US2106321A - Saw guard - Google Patents

Saw guard Download PDF

Info

Publication number
US2106321A
US2106321A US12598237A US2106321A US 2106321 A US2106321 A US 2106321A US 12598237 A US12598237 A US 12598237A US 2106321 A US2106321 A US 2106321A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
bar
hood
support
saw
means
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
Inventor
Guertin Gilles
Original Assignee
Guertin Gilles
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
Grant date

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27GACCESSORY MACHINES OR APPARATUS; TOOLS; SAFETY DEVICES, e.g. THOSE FOR SAWS
    • B27G19/00Safety guards or devices specially designed for wood saws; Auxiliary devices facilitating proper operation of wood saws
    • B27G19/02Safety guards or devices specially designed 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
    • Y10T83/727With means to guide moving work
    • Y10T83/732With guard
    • 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

Description

G. GUERTIN Jan. 25, 1938.

SAW GUARD Filed Feb. 16, 1937 INVENTOR. Gilles Guer'fm I My WM $7 ATTORNEYS. i

Patented Jan. 25, 1938 UNITED STATES PATENT O F- ce" This invention relates to, a guard for circular saws.

An object of the invention is to provide asaw guard wherein safety, convenience, and ease of operation have been materially enhanced by reason of the inclusion of certain structural improvements which form the basis'of the present invention. i

Another object of the invention is to provide an improved form of saw guard which is simple and inexpensive to manufacture.

These and other objects are attained by the means described herein and disclosed in the. accompanying drawing, in which:

Fig. 1 is an elevational View, partly in crosssection, showing the device of the invention.

Fig. 2 is a cross-sectional View taken on line 2-2 of Fig. 1.

Fig. 3 is a cross-sectional fragmental View taken on line 3-3 of Fig. 1.

Fig. 4 is a detail view of a saw-plane'indicating roller guide which forms part of the invention.

In the drawing, 5 indicates the saw table through which extends the circular saw 6. The guard structure for the saw comprises, generally, an arcuate hood I having solid sides 8 and a top for precluding the escape of saw-dust therefrom. At the forward end of the hood is the roller I adapted to engage the work I2 to be advanced to the saw, said roller being freely rotatable so as to climb onto the work or board to be sawed, and thereby to elevate the hood I. The roller is advantageously provided with a circumferential mark or groove I3 so located thereon as to indicate the plane of the saw. This enables the operator to know where the saw cut will occur in the work piece I2. A baille I in the hood protects the bearings of the roller from saw-dust.

At the rear end of the hood, there is pivoted one or more clutch pieces I4 having teeth as shown, which prevent withdrawal of the-work after having been subjected to the saw. It should be noted that any attempt to withdraw a board which has once passed below the clutch, will result in application of a force upwardly and obliquely towardthe hood support bar I6, substantially at right angles thereto. The bar, therefore, does not move longitudinally, but is locked against such movement when the force of the clutch against the work is directed at right angles to the bar, as occurs when removal of clutched work is attempted.

The hood support bar I8 is oblique, or inclined relative to the saw table. This bar is rigidly'flxed flexibility and ease of assembly and adjustment. I

to the hood as at H, so that the hood may not rock when the work is advanced to or moved past the saw. This stability'of the hoodis important,

and constitutes a safety feature of the structure. The hood support bar is suitably guided longi- 5 tudinally in thebar guide- I8, and the weight of the hood and its supportingbar is counter-balanced by means of a spring I9. The coiled ribbon type of spring shown is preferable, due to its 0 The lower end of the spring-is detachably fixed to the bar or the hood at the hooked end 20, whereas the upper end is. fixed at 2| upon a stationary part of the bar guide. As shown, the connection is made at 2| upon a transverse spacer. bar 22 of the guide. To adjust the lifting force of the spring I9,.it is necessaryonly todetach the'spring at and increase or decrease the number ofconvolutions 23 about the member 22. The supports at 24 and. -25'arefixed to the bar guide at; their upper ends, and to the saw table or other suitable. support at the lower ends thereof. In the embodiment shown, the screws or bolts 26 serve to mount the flattened lower ends ofthe supports to the under face of the saw table. The means andlocation of the mounting, howevenare optional. I H I With the counter-balancing of. the saw guard, it is necessary to provide an easy operating and a fool-proof guide means for the inclined bar I6.

pair of side plates v2'! and 28 spaced apart in any suitable manner, such as by means of pairs of spacer rods 29 and 3,0. These rods furnish axles for pairs of flanged wheels 3|, 32, 33, and 34.. These wheels are of .the anti-friction type employing ballor roller bearings. The flanges of the wheels are adjacent to theplates, so that the tires thereof provide a rolling surface for the four corners of the channel which forms the guide bar. This construction results in a substantially frictionless guide'for the hood support bar.

The, operation of the device is as follows. Upon advancing the work-piece I2 toward the saw, the saw-plane indicating roller III is contacted, climbing onto the work-piece, whatever may be the thickness thereof, for elevating the hood 8 in a. horizontal plane. The elevation of p the hood is accompanied by a rearward shifting due tothe inclination of the hood support bar H51 which rides upon the anti-friction rollers as shown in Fig. 3,.and explained .ina previous the hood supportbar, a comparatively light spring l9 may be employed. Should a greater or lesser force be desired on the spring; it"is necessary only to increase or decrease the-number of convolutions at 23, by detaching the spring end at and thereafter winding or unwindingthe remaining portion of the spring "relative to the member 22.

It will be noted that the guard includes very little superstructure, and for thatreason it has the-advantage of occupying a minimum of space and head room above the saw table. The device is entirely automatic, and requires no clamps, thumb screws, or other adjusting means to be cared for by the operator. The provision of solid sides on the hood 8 prevents undesirable and dangerous release of saw-dust laterally of-the saw. In addition to lengthening the. support bar I6, in order to accommodate work of varying degrees of thickness, it is to be understood that other modifications may-be made, within the scope of the appendedclaims without departing from the spirit of the invention.

What is claimed is:

1. In a saw guard, the combination of a hood having a closed top and solid sides, a forward end, and a substantially horizontal lower edge, a work engaging roller at the forward end of the hood and marked along its periphery to indicate the plane of a saw guarded by the hood, an obliquely inclined hood support bar and means fixing the hood rigidly to the bar, a support bar guide including rollers providing a way in which the hood support bar reciprocates as the work is fed beneath the hood, means for mounting the support bar guide in an elevated position, and a ribbon type spring having one end :movable with the hood and the support'bar, and an opposite end wound in convolutions about a portion of the mounting means, and fixed thereto, for lifting and substantially counter-balancing the weight of the hood and the support bar therefor.

2. In a saw guard, the combination of a bar support means and a mounting therefor to dispose the bar support means at :an elevation above a saw table, an obliquely inclined way provided on the bar support means, an obliquely inclined reciprocable support bar received :in said way, a hollow saw hood having a lower edge, means fixing the hood at a constant angularity to the support bar to preclude relative rocking movement thereof, and maintaining the lower edge of the hood always substantially horizontal, a leaf spring having one end thereof fixed relative to thebar support means and arranged in a series of convolutions at said one end, and means detachably mounting the opposite end of the spring to the support bar, whereby upon detachment of said opposite spring end the lifting force of the spring may be varied by increasing'or decreasing the number of convolutions atsaid one end.

3. In a saw guard, the combination of a bar support means and a mounting therefor to dispose the bar support means at an elevation above a saw table, an obliquely inclined way provided on the bar support means, an obliquely inclined reciprocable support bar received in said way, a hollow saw hood having a lower edge, means flx- 5 ing substantially the middle portion of the hood at a constant angularity to the support bar to preclude relative rocking movement thereof, and maintainingthe lower edge of the hood always substantiallyhorizontal, and a clutching means 10 on thehoodlocated near its rear end and therefore at a substantial distance from the oblique support bar, to transmit a binding force substantially at right angles to the support bar rather than longitudinally thereof upon attempted 15 withdrawal of a work piece held by the clutching means. v

In a device of the class described, the combination of a saw hood and a rectangular hood support bar mounted thereon, a hood support 20 bar guide comprising a pair of obliquely directed spaced plates, flanged wheels arranged in pairs on a common axle and rotatably mounted in spaced relationship between said plates with the flanges of each pair of wheels located adjacent 2 5 to the opposed plates, the pairs of wheels being staggered and'arranged to providean oblique way for guiding the hood support bar, said wheels including tires adjacent to the flanges thereof upon which the support bar rides with its four corners in contact upon the tires as it reciprocates obliquely, and means for yieldably relieving the support bar and hood of a major portion'of their combined Weight.

5. Ina device of the class described, the com- :35 bination of a saw hood and a rectangular hood support bar mounted thereon, a hood support bar guide comprising a pair of obliquely directed spaced plates, pairs of flanged wheels rotatably mounted between said plates with the flanges of .40 each pair of wheels located adjacent to the opposed plates, said wheels including tires adjacent to the flanges thereof upon which the fourcorner portions of the rectangular hood support bar ride as the bar reciprocates within the limits of the 45 wheel flanges, and-a leaf spring having opposite ends mounted upon the support bar and the support bar guide, with a series of convolutions near one of said ends, the spring extending in substantially the direction of reciprocation of the,-,5o support bar, to constantly lift said bar and urge it toward the guide.

6. In a saw guard, the combination of .a hood having a closed top and solid sides, a forward end, and a substantially horizontal lower edge, .55 a work engaging roller at the forward end of the hood, an obliquely inclined hood support bar and means fixing the hood rigidly to the bar,

a support bar guide including rollers providing a way in which the hood support bar recipro- .60 cates as the work is fed beneath the hood, means formounting the support bar guide in an elevated position, and a ribbon type spring having one end movable with the hood and the support bar, and an opposite end wound in convolu--65 tions about a portion of the mounting means, and fixed thereto, for lifting and substantially counter-balancing the weight of the hood and the support bar therefor.

'7. In a saw guard, the combination of a hood go having a top and sides, a forward end, and a substantially horizontal lower edge, a work engaging member at the forward end of the hood and marked to indicate the plane of a saw guarded by-thehood, an obliquely inclined hood,

support bar and means fixing the hood rigidly to the bar, a, support bar guide including rollers providing a way in which the hood support bar reciprocates as the work is fed beneath the hood, means for mounting the support bar guide in an elevated position, and a ribbon type spring having one end movable with the hood and the support bar, and an opposite end wound in convolutions about a portion of the mounting means, and fixed thereto, for lifting and substantially counter-balancing the Weight of the hood and the support bar therefor.

' GILLES GUERTIN.

US2106321A 1937-02-16 1937-02-16 Saw guard Expired - Lifetime US2106321A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US2106321A US2106321A (en) 1937-02-16 1937-02-16 Saw guard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2106321A US2106321A (en) 1937-02-16 1937-02-16 Saw guard

Publications (1)

Publication Number Publication Date
US2106321A true US2106321A (en) 1938-01-25

Family

ID=22422388

Family Applications (1)

Application Number Title Priority Date Filing Date
US2106321A Expired - Lifetime US2106321A (en) 1937-02-16 1937-02-16 Saw guard

Country Status (1)

Country Link
US (1) US2106321A (en)

Cited By (57)

* 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
US3043353A (en) * 1958-11-10 1962-07-10 Horstmann & Sherwen Ltd Saw guard for a circular sawing machine
US5724875A (en) * 1995-10-10 1998-03-10 Black & Decker Inc. Guard and control apparatuses for sliding compound miter saw
US6182548B1 (en) 1995-10-10 2001-02-06 Black & Decker Inc. Guard and control apparatuses for sliding compound miter saw
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
US20020017178A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Motion detecting system for use in a safety system for power equipment
US20020017179A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Miter saw with improved safety system
US20020017183A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Cutting tool 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
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
US20020056349A1 (en) * 2000-09-29 2002-05-16 Gass Stephen F. Miter saw with improved safety system
US20020056348A1 (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
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
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
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
US20040040426A1 (en) * 2002-08-27 2004-03-04 Gass Stephen F. Miter saw with improved safety system
US20050139459A1 (en) * 2003-12-31 2005-06-30 Gass Stephen F. Switch box for power tools with safety systems
US6945149B2 (en) 2001-07-25 2005-09-20 Sd3, Llc Actuators for use in fast-acting safety systems
US20050252187A1 (en) * 2000-09-29 2005-11-17 Gass Stephen F Cutting tool safety system
US6971297B1 (en) 1995-10-10 2005-12-06 Black & Decker Inc. Guard and control apparatuses for sliding compound miter saw
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
US20060230896A1 (en) * 1999-10-01 2006-10-19 Gass Stephen F Miter saw with improved safety system
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
US20070101842A1 (en) * 2003-08-20 2007-05-10 Gass Stephen F Woodworking machines with overmolded arbors
US20070175306A1 (en) * 2003-12-31 2007-08-02 Gass Stephen F Elevation mechanism for table saws
US7284467B2 (en) 2000-08-14 2007-10-23 Sd3, Llc Apparatus and method for detecting dangerous conditions in power equipment
US7290472B2 (en) 2002-01-14 2007-11-06 Sd3, Llc Miter saw with improved safety system
US7350445B2 (en) 2003-08-20 2008-04-01 Sd3, Llc Brake cartridge for power equipment
US7350444B2 (en) 2000-08-14 2008-04-01 Sd3, Llc Table saw with improved safety system
US7353737B2 (en) 2001-08-13 2008-04-08 Sd3, Llc Miter saw with improved safety system
US7359174B2 (en) 2000-08-14 2008-04-15 Sd3, Llc Motion detecting system for use in a safety system for power equipment
US7472634B2 (en) 2003-08-20 2009-01-06 Sd3, Llc Woodworking machines with overmolded arbors
US7536238B2 (en) 2003-12-31 2009-05-19 Sd3, Llc Detection systems for power equipment
EP2108491A1 (en) * 2008-04-08 2009-10-14 Suva Leistungscenter Sicherheitsprodukte Circular saw protective cover
US7707920B2 (en) 2003-12-31 2010-05-04 Sd3, Llc Table saws with safety systems
US7712403B2 (en) 2001-07-03 2010-05-11 Sd3, Llc Actuators for use in fast-acting safety systems
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
US8459157B2 (en) 2003-12-31 2013-06-11 Sd3, Llc Brake cartridges and mounting systems for brake cartridges
US20150367420A1 (en) * 2014-06-20 2015-12-24 Navarro IP, LLC Apparatus For Cutting Material And Method
US9724840B2 (en) 1999-10-01 2017-08-08 Sd3, Llc Safety systems for power equipment
US9969014B2 (en) 2016-11-21 2018-05-15 Sawstop Holding Llc Power equipment with detection and reaction systems

Cited By (120)

* 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
US3043353A (en) * 1958-11-10 1962-07-10 Horstmann & Sherwen Ltd Saw guard for a circular sawing machine
US6971297B1 (en) 1995-10-10 2005-12-06 Black & Decker Inc. Guard and control apparatuses for sliding compound miter saw
US5724875A (en) * 1995-10-10 1998-03-10 Black & Decker Inc. Guard and control apparatuses for sliding compound miter saw
US6182548B1 (en) 1995-10-10 2001-02-06 Black & Decker Inc. Guard and control apparatuses for sliding compound miter saw
US20060180451A1 (en) * 1999-10-01 2006-08-17 Gass Stephen F Switch box for power tools with safety systems
US7895927B2 (en) 1999-10-01 2011-03-01 Sd3, Llc Power equipment with detection and reaction systems
US20100236663A1 (en) * 1999-10-01 2010-09-23 Gass Stephen F Power equipment with detection and reaction systems
US20060230896A1 (en) * 1999-10-01 2006-10-19 Gass Stephen F Miter saw with improved safety system
US20060179983A1 (en) * 1999-10-01 2006-08-17 Gass Stephen F Brake mechanism for power equipment
US20110023673A1 (en) * 1999-10-01 2011-02-03 Gass Stephen F Power equipment with detection and reaction systems
US7055417B1 (en) 1999-10-01 2006-06-06 Sd3, Llc Safety system for power equipment
US7788999B2 (en) 1999-10-01 2010-09-07 Sd3, Llc Brake mechanism for power equipment
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
US20070028733A1 (en) * 1999-10-01 2007-02-08 Gass Stephen F Safety methods for use in power equipment
US9522476B2 (en) 1999-10-01 2016-12-20 Sd3, Llc Power equipment with detection and reaction systems
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
US9925683B2 (en) 1999-10-01 2018-03-27 Sawstop Holding Llc Table saws
US9724840B2 (en) 1999-10-01 2017-08-08 Sd3, Llc Safety systems for power equipment
US7621205B2 (en) 1999-10-01 2009-11-24 Sd3, Llc Band saw with 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
US20100089212A1 (en) * 2000-08-14 2010-04-15 Gass Stephen F 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
US8191450B2 (en) 2000-08-14 2012-06-05 Sd3, Llc Power equipment with detection and reaction systems
US7100483B2 (en) 2000-08-14 2006-09-05 Sd3, Llc Firing subsystem for use in a fast-acting safety system
US7681479B2 (en) 2000-08-14 2010-03-23 Sd3, Llc Motion detecting system for use in a safety system for power equipment
US6857345B2 (en) 2000-08-14 2005-02-22 Sd3, Llc Brake positioning system
US7350444B2 (en) 2000-08-14 2008-04-01 Sd3, Llc Table saw with improved safety system
US8100039B2 (en) 2000-08-14 2012-01-24 Sd3, Llc Miter saw with safety system
US6920814B2 (en) 2000-08-14 2005-07-26 Sd3, Llc Cutting tool safety system
US20020017179A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Miter saw with improved safety system
US20080029184A1 (en) * 2000-08-14 2008-02-07 Gass Stephen F Brake positioning system
US8151675B2 (en) 2000-08-14 2012-04-10 Sd3, Llc Logic control for fast-acting safety system
US7509899B2 (en) 2000-08-14 2009-03-31 Sd3, Llc Retraction system for use in power equipment
US7308843B2 (en) 2000-08-14 2007-12-18 Sd3, Llc 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
US7024975B2 (en) 2000-08-14 2006-04-11 Sd3, Llc Brake mechanism for power equipment
US20020020271A1 (en) * 2000-08-14 2002-02-21 Gass Stephen F. Spring-biased brake mechanism for power equipment
US7921754B2 (en) 2000-08-14 2011-04-12 Sd3, Llc Logic control for fast-acting safety system
US7284467B2 (en) 2000-08-14 2007-10-23 Sd3, Llc Apparatus and method for detecting dangerous conditions in power equipment
US20020020263A1 (en) * 2000-08-14 2002-02-21 Gass Stephen F. Firing subsystem for use in a fast-acting safety system
US20020017180A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Brake mechanism for power equipment
US20070240786A1 (en) * 2000-08-14 2007-10-18 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
US20020017178A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Motion detecting system for use in a safety system for power equipment
US7137326B2 (en) 2000-08-14 2006-11-21 Sd3, Llc Translation stop for use in power equipment
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
US7210383B2 (en) 2000-08-14 2007-05-01 Sd3, Llc Detection system for power equipment
US20110023670A1 (en) * 2000-08-14 2011-02-03 Gass Stephen F Power equipment with detection and reaction systems
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
US7832314B2 (en) 2000-08-14 2010-11-16 Sd3, Llc Brake positioning system
US7600455B2 (en) 2000-08-14 2009-10-13 Sd3, Llc Logic control for fast-acting safety system
US20060032352A1 (en) * 2000-09-18 2006-02-16 Gass Stephen F Translation stop for use in power equipment
US8065943B2 (en) 2000-09-18 2011-11-29 Sd3, Llc Translation stop for use in power equipment
US20050274432A1 (en) * 2000-09-29 2005-12-15 Gass Stephen F Router with improved safety system
US8061245B2 (en) 2000-09-29 2011-11-22 Sd3, Llc Safety methods for use in power equipment
US20050252187A1 (en) * 2000-09-29 2005-11-17 Gass Stephen F Cutting tool 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
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
US7357056B2 (en) 2000-09-29 2008-04-15 Sd3, Llc Cutting tool 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
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
US8186255B2 (en) 2000-09-29 2012-05-29 Sd3, Llc Contact detection system for power equipment
US20020056350A1 (en) * 2000-09-29 2002-05-16 Gass Stephen F. Table saw with improved safety system
US20020170400A1 (en) * 2001-05-17 2002-11-21 Gass Stephen F. Band saw with improved safety system
US20070131071A1 (en) * 2001-07-02 2007-06-14 Gass Stephen F Discrete proximity detection 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
US20030037651A1 (en) * 2001-08-13 2003-02-27 Gass Stephen F. Safety systems for power equipment
US20040163514A1 (en) * 2001-08-13 2004-08-26 Gass Stephen F. Safety systems for power equipment
US6997090B2 (en) 2001-08-13 2006-02-14 Sd3, Llc Safety systems for power equipment
US20060123960A1 (en) * 2001-08-13 2006-06-15 Gass Stephen F Safety systems for power equipment
US7353737B2 (en) 2001-08-13 2008-04-08 Sd3, Llc Miter saw with improved safety system
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
US20030131703A1 (en) * 2002-01-16 2003-07-17 Gass Stephen F. Apparatus and method for detecting dangerous conditions in power equipment
US20040040426A1 (en) * 2002-08-27 2004-03-04 Gass Stephen F. Miter saw with improved safety system
US7836804B2 (en) 2003-08-20 2010-11-23 Sd3, Llc Woodworking machines with overmolded arbors
US7472634B2 (en) 2003-08-20 2009-01-06 Sd3, Llc Woodworking machines with overmolded arbors
US20070101842A1 (en) * 2003-08-20 2007-05-10 Gass Stephen F Woodworking machines with overmolded arbors
US7350445B2 (en) 2003-08-20 2008-04-01 Sd3, Llc Brake cartridge for power equipment
US20050139459A1 (en) * 2003-12-31 2005-06-30 Gass Stephen F. Switch box for power tools with safety systems
US7536238B2 (en) 2003-12-31 2009-05-19 Sd3, Llc Detection systems for power equipment
US8087438B2 (en) 2003-12-31 2012-01-03 Sd3, Llc Detection systems for power equipment
US7991503B2 (en) 2003-12-31 2011-08-02 Sd3, Llc Detection systems for power equipment
US8122807B2 (en) 2003-12-31 2012-02-28 Sd3, Llc Table saws with safety systems
US7707920B2 (en) 2003-12-31 2010-05-04 Sd3, Llc Table saws with safety systems
US20070175306A1 (en) * 2003-12-31 2007-08-02 Gass Stephen F Elevation mechanism for table saws
US9623498B2 (en) 2003-12-31 2017-04-18 Sd3, Llc Table saws
US7827893B2 (en) 2003-12-31 2010-11-09 Sd3, Llc Elevation mechanism for table saws
US20100288095A1 (en) * 2003-12-31 2010-11-18 Gass Stephen F Table saws with safety systems
US8459157B2 (en) 2003-12-31 2013-06-11 Sd3, Llc Brake cartridges and mounting systems for brake cartridges
US8489223B2 (en) 2003-12-31 2013-07-16 Sd3, Llc Detection systems for power equipment
US8498732B2 (en) 2003-12-31 2013-07-30 Sd3, Llc Detection systems for power equipment
US7866239B2 (en) 2003-12-31 2011-01-11 Sd3, Llc Elevation mechanism for table saws
US8505424B2 (en) 2004-01-29 2013-08-13 Sd3, Llc Table saws with safety systems and systems to mount and index attachments
US7827890B2 (en) 2004-01-29 2010-11-09 Sd3, Llc Table saws with safety systems and systems to mount and index attachments
US20110126682A1 (en) * 2004-01-29 2011-06-02 Gass Stephen F Table saws with safety systems and systems to mount and index attachments
US20060247795A1 (en) * 2005-04-15 2006-11-02 Gass Stephen F Detection systems for power equipment
EP2108491A1 (en) * 2008-04-08 2009-10-14 Suva Leistungscenter Sicherheitsprodukte Circular saw protective cover
US8082825B2 (en) 2009-06-09 2011-12-27 Butler David J Health and safety system for a table saw
US9694424B2 (en) * 2014-06-20 2017-07-04 Navarro IP, LLC Apparatus for cutting material and method
US20150367420A1 (en) * 2014-06-20 2015-12-24 Navarro IP, LLC Apparatus For Cutting Material And Method
US9969014B2 (en) 2016-11-21 2018-05-15 Sawstop Holding Llc Power equipment with detection and reaction systems

Similar Documents

Publication Publication Date Title
US3285302A (en) Circular saw machine
US3566934A (en) Saw guided splitter
US2998813A (en) Masonry saw
US4559858A (en) Portable band saw saw mill apparatus
US1993219A (en) Circular saw
US2873773A (en) Shiftable motor drive for tilting arbor saw
US4026174A (en) Guard for circular saw
US2808084A (en) Adjustable guide fence for power tool work table
US4599929A (en) Method of guiding saw blades and device for carrying out the method
US5784941A (en) Portable sawmill
US2075282A (en) Bench saw
US2876809A (en) Low blade-tension band saw constructions
US2749196A (en) Track and bed table carriage supported from bed rail
US1530682A (en) Woodworking mechanism
US3688615A (en) Pipe cutting device
US2601878A (en) Table saw with part of the table swingably and laterally adjustable
US1527587A (en) Saw guard
US5024257A (en) Woodworking machine
US3516459A (en) Sharpeners for chain saws
US3101104A (en) Safety device for saws
US4144782A (en) Apparatus for curved sawing of timber
US4275632A (en) Portable sawmill
US4697487A (en) Adjustable cable driven carriage system and method
US2612914A (en) Safety device for woodworking machines
US4197775A (en) Saw table