US3785230A - Automatic safety brake for rotary blade equipment - Google Patents

Automatic safety brake for rotary blade equipment Download PDF

Info

Publication number
US3785230A
US3785230A US3785230DA US3785230A US 3785230 A US3785230 A US 3785230A US 3785230D A US3785230D A US 3785230DA US 3785230 A US3785230 A US 3785230A
Authority
US
United States
Prior art keywords
blade
brake
frame
solenoid
sensor
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
R Lokey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LOKEY TOOL Inc
Original Assignee
LOKEY TOOL Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LOKEY TOOL Inc filed Critical LOKEY TOOL Inc
Application granted granted Critical
Publication of US3785230A publication Critical patent/US3785230A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0078Safety devices protecting the operator, e.g. against accident or noise
    • B23Q11/0092Safety devices protecting the operator, e.g. against accident or noise actuating braking or stopping means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/08Protective coverings for parts of machine tools; Splash guards
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27BSAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B5/00Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
    • B27B5/29Details; Component parts; Accessories
    • B27B5/38Devices for braking the circular saw blade or the saw spindle; Devices for damping vibrations of the circular saw blade, e.g. silencing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16PSAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P3/00Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
    • F16P3/12Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine
    • F16P3/14Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact
    • F16P3/148Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact using capacitive technology
    • 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
    • Y10T83/081With randomly actuated stopping means

Definitions

  • Lokey AUTOMATIC SAFETY BRAKE FOR ROTARY BLADE EQUIPMENT [75] Inventor: Robert C. Lokey, Tamal, Calif. [73] Assignee: Lokey Tool, Inc., San Leandro,
  • the sensitivity of the sensor may 1,189.602 7/1916 Michener 30/390 be adjusted to Suit the Capacitance effect of the indil,55l,9()0 9/1925 Morrow .v 144/25] R vidual user of the equipment.
  • 2,798,583 7/l957 Jeszka et al [92/130 3.409.842 11/1968 Embling ct 11 t. 317/010. 2 5 Clams 9 Drawmg Figures A? W c ME-4 -1 4/ r' m w L? 20 ANTENNA MPL F/ E BE LL A E I D/JC/Q/M/A A me 1451 Jan.
  • the brake of the present invention is instanteously actuated by the capacitance effect of a human body approaching the blade in such a way that cutting of the body would otherwise take place. Adjustability of the equipment permits theequipment'to be tuned to the capacitance effect of each individual user.
  • the primary object of the invention is to provide an automatic brake for the rotary blade of rotary blade equipment actuated by approach of the human body to the blade.
  • FIG. I is a perspective view of the invention
  • FIG. 3 is a transverse vertical cross section, taken along the line 3-3 of FIG. 2, looking in the direction of the arrows;
  • FIG. 4 is a transverse horizontal sectional view, taken along the line 4-4 of FIG. 2, looking in the direction of the arrows;
  • FIG. 5 is a vertical sectional view, taken along the line of 55 of FIG. 2, looking in the direction of the arrows;
  • FIG. 6 is a semi-diagrammatic view of the electric circuity involved in the invention.
  • FIG. 7 is a transverse sectional view of a table saw incorporating the invention.
  • FIG. 8 is a vertical sectional view, taken along the line 8-8 of FIG. 7, looking in the direction of the arrows;
  • FIG. 9 is a horizontal sectional view, taken along the line 9--9 of FIG. 7, looking in the direction of the arrows.
  • the reference numeral 10 indicates generally an automatic safety brake for rotary saws constructed in accordance with the invention.
  • the brake 10 is illustrated in FIG. 1 attached to an electric hand saw 11 of the type having a blade guide 12 secured thereto and covering the upper portion of the blade 13 mounted onthe shaft 14.
  • the blade l3 is electrically insulated from the shaft 14 by insulating washers W.
  • An amplifier 15 is connected to an antenna 16 positioned close to the blade 13 so that the blade 13 becomes a part of the electronic circuit.
  • the amplifier is electrically connected to a discriminator 16 pulling an indicator l7 thereon and is in turn electrically connected to an electronic relay 18 having an adjustment knob 19 forming a part thereof.
  • the amplifier 15, discriminator l6 and electronic relay 18 with its adjustment knob 19 together serve as a capacitance proximity sensor for actuating a bell 20 and a brake solenoid 21.
  • a pair of U-shaped brackets 22 are secured by bolts 23 internally of the blade guide 12 with each having a cam brake member 24 mounted for rotary motion therein on a shaft 25.
  • the shafts 25 are provided respectively with crank arms 26, 27 having a slotted connection to a pivot pin 28.
  • the pivot pin 28 connects the crank arms 26, 27 to the lower end of an armature 29 of a solenoid 21.
  • the solenoid 21 is mounted in a housing 30 connected to the blade guide 12.
  • the operator sets the knob 19 to a position such that as his finger first approaches the blade 13 the bell 20 will ring as the indicator 17 reaches the Z and at the brake actuating solenoid will be energized as the indicator reaches X.
  • the threading of the knob 19 should be such that the solenoid 21 will operate just prior to the finger touching the blade 13 so that the cam brake members 24 will be rotated by their shafts 25 when rotated by movement of the armature 29 in the solenoid 21.
  • the movement of the brakes 24 into engagement with the blade 13 is virtually instantaneous and the blade 13 stops prior to even the slightest contact with the body of the user regardless of the speed of movement of the users finger toward a contacting position with respect to the blade 13.
  • FIGS. 7 through 10 a modified form of the invention is illustrated wherein an electronic brake for a rotary blade is indicated generally at 110.
  • the brake is used with a table saw indicated generally at 111 having a frame 112 carrying a saw blade 113 mounted on a shaft 114 supported on the frame 112.
  • the blade 113 is driven from an electric motor 115 by a belt 116 controlled by a belt tightener pulley 117.
  • a control shaft 118 normally urges the belt tightener pulley 117 into belt tightening position by means of a connecting link 118 and spring 119.
  • a link 120 is connected to the spring 119 and is carried by a slide shaft 12] mounted in bearings 122 depending from the frame 112.
  • An arm 123 extends upwardly through the frame 112 and is connected to a block 124 slidably mounted on the frame 112 in aligned relation to the saw blade 113.
  • a rubber wedge block 125 is connected to the slide block 124 and arranged for engaging with the saw blade 113 when moved toward the saw 113.
  • a solenoid 126 is mounted on the frame 112 and is connected by an armature 127 to the block 124 so that actuation of the solenoid 126 forces the block 124 toward the blade 113 and engages the rubber brake block 125 with the teeth of the saw 113.
  • the shaft 121 is moved in the direction to compass the spring 119 and pull the belt tightener 117 out of contact with the belt 116 to release the driving connection between the motor 115 and the shaft 114.
  • the solenoid 126 is actuated by an identical amplifier, discriminator, and electronic relay as that used with the preferred form of the invention as illustrated in FIG. 6.
  • FIGS. 7, 8 and 9 The use and operation of the apparatus illustrated in FIGS. 7, 8 and 9 is identical to that of the preferred form of the invention illustrated in FIGS. 1 through 6. It should be understood that the rubber block 125 is of sufficient strength to prevent the teeth of the blade 113 from cutting therethrough as the blade 113 is brought to a stop.
  • a power tool comprising a frame, a rotating cutting blade mounted in said frame, a brake mounted in said frame for movement into blade contacting position, a solenoid mounted in said frame and connected to said brake for moving said brake into contact with said blade, a capacitance proximity sensor mounted on said frame for detecting the approach of a portion of a human body to said blade, and means actuated by said sensor for energizing said solenoid to instanteously stop said blade when a portion of the human body closely approaches said blade.
  • a device as claimed in claim 1 including means for adjusting the relative senitivity of said sensor to tune said sensor to the capacitances of the body of the user.

Abstract

An automatic safety brake for rotary blade equipment in which a capacitance proximity sensor utilizes the spinning blade as an antenna so that when any portion of the body of the user approaches the blade to closely a cam brake will be instantaneously actuated to stop the rotation of the blade before the body of the user comes in contact with the cutting edge of the blade. In one form of the invention cam members are applied to opposite side faces of the blade to serve as a brake for the instanteous stopping of the rotation of the blade. In another form of the invention a rubber wedge is driven into the cutting edge of the blade so as to instantaneously stop the rotation of the blade. In both forms of the invention the sensitivity of the sensor may be adjusted to suit the capacitance effect of the individual user of the equipment.

Description

Lokey AUTOMATIC SAFETY BRAKE FOR ROTARY BLADE EQUIPMENT [75] Inventor: Robert C. Lokey, Tamal, Calif. [73] Assignee: Lokey Tool, Inc., San Leandro,
[57 ABSTRACT [22] Filed: 1972 An automatic safety brake for rotary blade equipment 21 APPL 304 72 in which a capacitance proximity sensor utilizes the spinning blade as an antenna so that when any portion of the body of the user approaches the blade to closely [52] U.S. Cl 83/58, 30/390, 192/129 A, Cam brake Will be instantaneously actuated to Stop 192/130" 192/144 3l7/DIG' 2 the rotation of the blade before the body of the user [5 l llll. Cl 827]] 19/02, B27h 19/04 comes in Contact with the cutting edge of the blade In [58] Field of Search 408/710; 82/34 R; one form of the invention Cam members are applied to 30/390 83/72 58; opposite side faces of the blade to serve as a brake for 192/129 R, 129 A, [30, 131, I44; 3l the instanteous stopping of the rotation of the blade. 2 In another form of the invention a rubber wedge is driven into the cutting edge of the blade so as to in- [561 References C'ted stantaneously stop the rotation of the blade. In both NITED TA ES P T N forms of the invention the sensitivity of the sensor may 1,189.602 7/1916 Michener 30/390 be adjusted to Suit the Capacitance effect of the indil,55l,9()0 9/1925 Morrow .v 144/25] R vidual user of the equipment. 2,798,583 7/l957 Jeszka et al [92/130 3.409.842 11/1968 Embling ct =11 t. 317/010. 2 5 Clams 9 Drawmg Figures A? W c ME-4 -1 4/ r' m w L? 20 ANTENNA MPL F/ E BE LL A E I D/JC/Q/M/A A me 1451 Jan. 15, 1974 Primary Examiner-Donald R. Schran rift AUTOMATIC SAFETY BRAKE FOR ROTARY BLADE EQUIPMENT BACKGROUND OF THE INVENTION Field of the Invention Summary of the Invention The brake of the present invention is instanteously actuated by the capacitance effect of a human body approaching the blade in such a way that cutting of the body would otherwise take place. Adjustability of the equipment permits theequipment'to be tuned to the capacitance effect of each individual user.
The primary object of the invention is to provide an automatic brake for the rotary blade of rotary blade equipment actuated by approach of the human body to the blade.
.Other objects and advantages will become apparent in the following specification when considered in the light of the attached drawings.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. I is a perspective view of the invention;
FIG. 2 is an enlarged fragmentary vertical sectional view, taken along the line 2-2 of FIG. 1, looking in the direction of the arrows;
FIG. 3 is a transverse vertical cross section, taken along the line 3-3 of FIG. 2, looking in the direction of the arrows;
FIG. 4 is a transverse horizontal sectional view, taken along the line 4-4 of FIG. 2, looking in the direction of the arrows;
FIG. 5 is a vertical sectional view, taken along the line of 55 of FIG. 2, looking in the direction of the arrows;
FIG. 6 is a semi-diagrammatic view of the electric circuity involved in the invention;
FIG. 7 is a transverse sectional view of a table saw incorporating the invention;
FIG. 8 is a vertical sectional view, taken along the line 8-8 of FIG. 7, looking in the direction of the arrows; and
FIG. 9 is a horizontal sectional view, taken along the line 9--9 of FIG. 7, looking in the direction of the arrows.
DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring now to the drawings in detail, wherein like reference characters indicate like parts throughout the several figures, the reference numeral 10 indicates generally an automatic safety brake for rotary saws constructed in accordance with the invention.
The brake 10 is illustrated in FIG. 1 attached to an electric hand saw 11 of the type having a blade guide 12 secured thereto and covering the upper portion of the blade 13 mounted onthe shaft 14. The blade l3 is electrically insulated from the shaft 14 by insulating washers W.
An amplifier 15 is connected to an antenna 16 positioned close to the blade 13 so that the blade 13 becomes a part of the electronic circuit. The amplifier is electrically connected to a discriminator 16 pulling an indicator l7 thereon and is in turn electrically connected to an electronic relay 18 having an adjustment knob 19 forming a part thereof. The amplifier 15, discriminator l6 and electronic relay 18 with its adjustment knob 19 together serve as a capacitance proximity sensor for actuating a bell 20 and a brake solenoid 21.
A pair of U-shaped brackets 22 are secured by bolts 23 internally of the blade guide 12 with each having a cam brake member 24 mounted for rotary motion therein on a shaft 25. The shafts 25 are provided respectively with crank arms 26, 27 having a slotted connection to a pivot pin 28. The pivot pin 28 connects the crank arms 26, 27 to the lower end of an armature 29 of a solenoid 21. The solenoid 21 is mounted in a housing 30 connected to the blade guide 12.
In the use an operation of the invention the operator sets the knob 19 to a position such that as his finger first approaches the blade 13 the bell 20 will ring as the indicator 17 reaches the Z and at the brake actuating solenoid will be energized as the indicator reaches X. The threading of the knob 19 should be such that the solenoid 21 will operate just prior to the finger touching the blade 13 so that the cam brake members 24 will be rotated by their shafts 25 when rotated by movement of the armature 29 in the solenoid 21. The movement of the brakes 24 into engagement with the blade 13 is virtually instantaneous and the blade 13 stops prior to even the slightest contact with the body of the user regardless of the speed of movement of the users finger toward a contacting position with respect to the blade 13.
In FIGS. 7 through 10 a modified form of the invention is illustrated wherein an electronic brake for a rotary blade is indicated generally at 110. The brake is used with a table saw indicated generally at 111 having a frame 112 carrying a saw blade 113 mounted on a shaft 114 supported on the frame 112. The blade 113 is driven from an electric motor 115 by a belt 116 controlled by a belt tightener pulley 117. A control shaft 118 normally urges the belt tightener pulley 117 into belt tightening position by means of a connecting link 118 and spring 119. A link 120 is connected to the spring 119 and is carried by a slide shaft 12] mounted in bearings 122 depending from the frame 112. An arm 123 extends upwardly through the frame 112 and is connected to a block 124 slidably mounted on the frame 112 in aligned relation to the saw blade 113. A rubber wedge block 125 is connected to the slide block 124 and arranged for engaging with the saw blade 113 when moved toward the saw 113. A solenoid 126 is mounted on the frame 112 and is connected by an armature 127 to the block 124 so that actuation of the solenoid 126 forces the block 124 toward the blade 113 and engages the rubber brake block 125 with the teeth of the saw 113. Simultaneously the shaft 121 is moved in the direction to compass the spring 119 and pull the belt tightener 117 out of contact with the belt 116 to release the driving connection between the motor 115 and the shaft 114. The solenoid 126 is actuated by an identical amplifier, discriminator, and electronic relay as that used with the preferred form of the invention as illustrated in FIG. 6.
The use and operation of the apparatus illustrated in FIGS. 7, 8 and 9 is identical to that of the preferred form of the invention illustrated in FIGS. 1 through 6. It should be understood that the rubber block 125 is of sufficient strength to prevent the teeth of the blade 113 from cutting therethrough as the blade 113 is brought to a stop.
Having thus described the preferred embodiments of the invention it should be understood that numerous structural modifications and adaptations may be resorted to without departing from the spirit of the invention.
What is claimed is:
1. A power tool comprising a frame, a rotating cutting blade mounted in said frame, a brake mounted in said frame for movement into blade contacting position, a solenoid mounted in said frame and connected to said brake for moving said brake into contact with said blade, a capacitance proximity sensor mounted on said frame for detecting the approach of a portion of a human body to said blade, and means actuated by said sensor for energizing said solenoid to instanteously stop said blade when a portion of the human body closely approaches said blade.
2. A device as claimed in claim 1 including means for adjusting the relative senitivity of said sensor to tune said sensor to the capacitances of the body of the user.
3. A device as claimed in claim 1 wherein an audible signal is actuated by the means for actuating said solenoid prior to the actuation of said solenoid.
4. A device as claimed in claim 1 wherein said brake is mounted for rotation and includes a cam surface for binding engagment with the side face of said saw blade.
5. A device as claimed in claim 1 wherein said brake is mounted for sliding movement with respect to said blade and engages the cutting edge of said blade.

Claims (5)

1. A power tool comprising a frame, a rotating cutting blade mounted in said frame, a brake mounted in said frame for movement into blade contacting position, a solenoid mounted in said frame and connected to said brake for moving said brake into contact with said blade, a capacitance proximity sensor mounted on said frame for detecting the approach of a portion of a human body to said blade, and means actuated by said sensor for energizing said solenoid to instanteously stop said blade when a portion of the human body closely approaches said blade.
2. A device as claimed in claim 1 including means for adjusting the relative senitivity of said sensor to tune said sensor to the capacitances of the body of the user.
3. A device as claimed in claim 1 wherein an audible signal is actuated by the means for actuating said solenoid prior to the actuation of said solenoid.
4. A device as claimed in claim 1 wherein said brake is mounted for rotation and includes a cam surface for binding engagment with the side face of said saw blade.
5. A device as claimed in claim 1 wherein said brake is mounted for sliding movement with respect to said blade and engages the cutting edge of said blade.
US3785230D 1972-11-08 1972-11-08 Automatic safety brake for rotary blade equipment Expired - Lifetime US3785230A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US30472672A 1972-11-08 1972-11-08

Publications (1)

Publication Number Publication Date
US3785230A true US3785230A (en) 1974-01-15

Family

ID=23177712

Family Applications (1)

Application Number Title Priority Date Filing Date
US3785230D Expired - Lifetime US3785230A (en) 1972-11-08 1972-11-08 Automatic safety brake for rotary blade equipment

Country Status (1)

Country Link
US (1) US3785230A (en)

Cited By (130)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4026177A (en) * 1976-07-21 1977-05-31 Lokey Tool, Inc. Rotary insulated saw blade
FR2352621A1 (en) * 1976-05-25 1977-12-23 Yoneda Kichi SAFETY DEVICE FOR EMERGENCY STOP OF A SHARP TAPE OF A CUTTING DEVICE
US4075961A (en) * 1976-05-07 1978-02-28 Burlington Industries, Inc. Injury protection device for machinery
US4512224A (en) * 1982-04-01 1985-04-23 Kabushiki Kaisha Kindai Slitter device
EP0138702A1 (en) * 1983-10-14 1985-04-24 Bonnet S.A. Apparatus for the food industry with access controlled by a device creating a variation in electrical impedance
US4753012A (en) * 1984-08-22 1988-06-28 Andreas Stihl Chain saw having a braking arrangement
US4804945A (en) * 1987-10-29 1989-02-14 Terrance Millet Door alarm with infrared and capacitive sensors
US4965909A (en) * 1988-10-04 1990-10-30 Mccullough Timothy J Safety control for power operated equipment
US5038473A (en) * 1990-02-28 1991-08-13 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Power saw
US5198702A (en) * 1990-03-07 1993-03-30 Mccullough Timothy J Control and safety system for electrically operated devices
US5272946A (en) * 1992-03-20 1993-12-28 Food Industry Equipment International, Inc. Safety control system for power operated equipment
US5510685A (en) * 1993-07-29 1996-04-23 Grasselli; Giorgio Electric motor control based on conductive contact of machine component with operator for injury prevention
US5666010A (en) * 1995-08-30 1997-09-09 Stratiotis; Gus Safety system for machine tools
US20020017336A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Apparatus and method for detecting dangerous conditions in power equipment
US20020017175A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Translation stop for use in power equipment
US20020017176A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Detection system for power equipment
US20020020265A1 (en) * 2000-08-14 2002-02-21 Gass Stephen F. Translation stop for use in power equipment
US20020059854A1 (en) * 2000-09-29 2002-05-23 Gass Stephen F. Miter saw with improved safety system
US20020069734A1 (en) * 2000-09-29 2002-06-13 Gass Stephen F. Contact detection system for power equipment
EP1234285A2 (en) * 1999-10-01 2002-08-28 SD3, Llc Safety systems for power equipment
US20020190581A1 (en) * 2001-06-13 2002-12-19 Gass Stephen F. Apparatus and method for detecting dangerous conditions in power equipment
US20030002942A1 (en) * 2001-07-02 2003-01-02 Gass Stephen F. Discrete proximity detection system
US20030005588A1 (en) * 2001-07-03 2003-01-09 Gass Stephen F. Actuators for use in fast-acting safety systems
WO2003006213A2 (en) * 2001-07-11 2003-01-23 Black & Decker Inc. Power tool safety mechanisms
US20030020336A1 (en) * 2001-07-25 2003-01-30 Gass Stephen F. Actuators for use in fast-acting safety systems
US20030058121A1 (en) * 2001-09-24 2003-03-27 Gass Stephen F. Logic control with test mode for fast-acting safety system
US20030115804A1 (en) * 2000-03-15 2003-06-26 Goran Sundolm Fire door and a fire protection system
US20030131703A1 (en) * 2002-01-16 2003-07-17 Gass Stephen F. Apparatus and method for detecting dangerous conditions in power equipment
US20040017294A1 (en) * 2002-07-29 2004-01-29 Metzger James I. System to detect user entry into a defined danger zone
US20040060404A1 (en) * 2002-09-30 2004-04-01 Emerson Electric Co. Breakaway hub for saw
EP1422022A1 (en) * 2002-11-12 2004-05-26 Makita Corporation Power tools
US20040123709A1 (en) * 2002-12-30 2004-07-01 Emerson Electric Co. System for sensing user contact with a saw blade
US20040159198A1 (en) * 2003-01-31 2004-08-19 Peot David G. Table saw with cutting tool retraction system
US20040194594A1 (en) * 2003-01-31 2004-10-07 Dils Jeffrey M. Machine safety protection system
US6813983B2 (en) 2000-09-29 2004-11-09 Sd3, Llc Power saw with improved safety system
US20050057206A1 (en) * 2003-09-12 2005-03-17 Makita Corporation Power tool
US6880440B2 (en) 2000-09-29 2005-04-19 Sd3, Llc Miter saw with improved safety system
US20050139051A1 (en) * 2000-08-14 2005-06-30 Gass Stephen F. Brake positioning system
US6945148B2 (en) 2000-09-29 2005-09-20 Sd3, Llc Miter saw with improved safety system
US6994004B2 (en) 2000-09-29 2006-02-07 Sd3, Llc Table saw with improved safety system
US7000514B2 (en) 2001-07-27 2006-02-21 Sd3, Llc Safety systems for band saws
US20060041241A1 (en) * 2003-03-25 2006-02-23 Herndon Terry O Drill device and method for forming microconduits
US20060054725A1 (en) * 2004-09-10 2006-03-16 Fellowes, Inc. Shredder throat safety system
US7077039B2 (en) 2001-11-13 2006-07-18 Sd3, Llc Detection system for power equipment
US20060179983A1 (en) * 1999-10-01 2006-08-17 Gass Stephen F Brake mechanism for power equipment
US20060185492A1 (en) * 2005-02-18 2006-08-24 Francois Chianese Shoulder bushing for saw blades
US20060272463A1 (en) * 2000-08-14 2006-12-07 Gass Stephen F Motion detecting system for use in a safety system for power equipment
US20070101842A1 (en) * 2003-08-20 2007-05-10 Gass Stephen F Woodworking machines with overmolded arbors
US20070151433A1 (en) * 2003-12-31 2007-07-05 Gass Stephen F Elevation mechanism for table saws
US20070175306A1 (en) * 2003-12-31 2007-08-02 Gass Stephen F Elevation mechanism for table saws
US20070240786A1 (en) * 2000-08-14 2007-10-18 Gass Stephen F Motion detecting system for use in a safety system for power equipment
US20080014830A1 (en) * 2006-03-24 2008-01-17 Vladimir Sosnovskiy Doll system with resonant recognition
US20080028622A1 (en) * 2006-08-07 2008-02-07 Trbovich Nicholas D Tool handle assembly having electrically insulated handle end piece
US20080041207A1 (en) * 2006-07-14 2008-02-21 Aurora Office Equipment Co., Ltd. Touch-sensitive paper shredder control system
US20080041204A1 (en) * 2000-08-14 2008-02-21 Gass Stephen F Apparatus and method for detecting dangerous conditions in power equipment
US20080053994A1 (en) * 2006-08-30 2008-03-06 Aurora Office Equipment Co., Ltd. Shanghai Paper-Breaker Wastebin Structure
US20080092702A1 (en) * 2000-08-14 2008-04-24 Gass Stephen F Spring-biased brake mechanism for power equipment
US20080134852A1 (en) * 2002-01-14 2008-06-12 Gass Stephen F Miter saw with improved safety system
US20080173147A1 (en) * 2007-01-22 2008-07-24 Credo Technology Corporation & Robert Bosch Gmbh Proximity sensor for stationary power tools
US20080184858A1 (en) * 2000-08-14 2008-08-07 Gass Stephen F Table saw with improved safety system
US20080196565A1 (en) * 2007-02-20 2008-08-21 Eppard Erin F Injury mitigation system for power tools
US20080282858A1 (en) * 2000-08-14 2008-11-20 Gass Stephen F Miter saw with improved safety system
US20090032629A1 (en) * 2007-08-02 2009-02-05 Acco Uk Limited Shredding machine
US20090090797A1 (en) * 2007-10-04 2009-04-09 Fellowes Inc. Shredder thickness with anti-jitter feature
US20090094839A1 (en) * 2007-10-11 2009-04-16 Earl Votolato Electronic Utility Knife with Safety Reaction System
US20090114070A1 (en) * 1999-10-01 2009-05-07 Gass Stephen F Safety system for power equipment
US20090120256A1 (en) * 2007-10-22 2009-05-14 Pasek James E Food Article Feed Apparatus for a Food Article Slicing Machine
US20090133553A1 (en) * 2000-09-29 2009-05-28 Gass Stephen F Table saw with improved safety system
US20090178524A1 (en) * 2003-08-20 2009-07-16 Gass Stephen F Woodworking machines with overmolded arbors
CN101557699A (en) * 2006-12-12 2009-10-14 罗伯特·博世有限公司 Hand tool machine protection device
US20100050836A1 (en) * 2008-08-28 2010-03-04 Juergen Seidel Machine tool protective device
US20100050843A1 (en) * 2008-08-18 2010-03-04 Gass Stephen F Table saw
US20100084496A1 (en) * 2004-09-10 2010-04-08 Fellowes, Inc. Shredder with thickness detector
US20100089212A1 (en) * 2000-08-14 2010-04-15 Gass Stephen F Logic control for fast-acting safety system
US20100132523A1 (en) * 2000-08-14 2010-06-03 Gass Stephen F Replaceable brake mechanism for power equipment
US20100170969A1 (en) * 2009-01-05 2010-07-08 Fellowes, Inc. Thickness adjusted motor controller
US20100180740A1 (en) * 2007-07-11 2010-07-22 Reiner Krapf Machine tool having a safety unit and a calibration unit for calibrating the safety unit
US7784507B2 (en) 2000-09-29 2010-08-31 Sd3, Llc Router with improved safety system
US20100243774A1 (en) * 2009-03-24 2010-09-30 Fellowers, Inc. Shredder with jam proof system
US20100257743A1 (en) * 2009-04-08 2010-10-14 Rex George Systems and Methods for a Chainsaw Safety Device
US20100270404A1 (en) * 2009-04-28 2010-10-28 Aurora Office Equipment Co., Ltd. Shanghai type protection device for shredders
US20100282879A1 (en) * 2009-05-07 2010-11-11 Aurora Office Equipment Co., Ltd.Shanghai Anti-paper jam protection device for shredders
US20100288861A1 (en) * 2009-05-15 2010-11-18 Fellowes, Inc. Paper alignment sensor arrangement
US20100307307A1 (en) * 2009-06-09 2010-12-09 Butler David J Health and safety system for a table saw
US20100320299A1 (en) * 2009-06-18 2010-12-23 Fellowes, Inc. Restrictive throat mechanism for paper shredders
US20100320297A1 (en) * 2009-06-18 2010-12-23 Fellowes, Inc. Restrictive throat mechanism for paper shredders
US20100327091A1 (en) * 2009-06-24 2010-12-30 Techko, Inc. Safety systems and methods for controlling operation of office equipment
US20110022188A1 (en) * 2008-01-11 2011-01-27 Reiner Krapf Device, particularly protective sensor system, for a machine tool
US7991503B2 (en) 2003-12-31 2011-08-02 Sd3, Llc Detection systems for power equipment
US20110186663A1 (en) * 2004-09-10 2011-08-04 Fellowes Inc. Shredder with thickness detector
US8008812B2 (en) 2006-07-14 2011-08-30 Aurora Office Equipment Co., Ltd. Paper shredder control system responsive to touch-sensitive element
US8061245B2 (en) 2000-09-29 2011-11-22 Sd3, Llc Safety methods for use in power equipment
US8065943B2 (en) 2000-09-18 2011-11-29 Sd3, Llc Translation stop for use in power equipment
US20110308365A1 (en) * 2008-04-24 2011-12-22 Yuan Ze University Safety device for machine tool
US8146845B2 (en) 2008-08-06 2012-04-03 Aurora Office Equipment Co., Ltd. Shanghai Automatic shredder without choosing the number of paper to be shredded
US20120090439A1 (en) * 2009-06-09 2012-04-19 Butler David J Health and safety system for a table saw
US8201766B2 (en) 2008-08-19 2012-06-19 Aurora Office Equipment Co., Ltd. Pins or staples removable structure of automatic shredders
US8201761B2 (en) 2009-01-05 2012-06-19 Fellowes, Inc. Thickness sensor based motor controller
US8322259B2 (en) 2010-12-17 2012-12-04 Jeff Buchanan Safety system and method for cuttinig machine
US8336432B1 (en) * 2011-08-19 2012-12-25 David J Butler Safety system for machine tools
US8382019B2 (en) 2010-05-03 2013-02-26 Fellowes, Inc. In-rush current jam proof sensor control
US8459157B2 (en) 2003-12-31 2013-06-11 Sd3, Llc Brake cartridges and mounting systems for brake cartridges
US8511593B2 (en) 2010-05-28 2013-08-20 Fellowes, Inc. Differential jam proof sensor for a shredder
US8672247B2 (en) 2005-07-11 2014-03-18 Fellowes, Inc. Shredder with thickness detector
US8708260B2 (en) 2011-08-08 2014-04-29 Aurora Office Equipment Co., Ltd. Depowered standby paper shredder and method
US8723468B2 (en) 2011-04-28 2014-05-13 Aurora Office Equipment Co., Ltd. Cooled motor
US20140251105A1 (en) * 2013-03-11 2014-09-11 Robert Bosch Tool Corporation Power Tool With Ferrous Contaminant Detection
US20140331833A1 (en) * 2013-05-13 2014-11-13 Stephen F. Gass Detection system for power equipment
US8950305B1 (en) * 2011-08-09 2015-02-10 Innovative Engineering Solutions, Inc. Saw brake
US9345487B2 (en) 2013-02-05 2016-05-24 Path Scientific, Llc Precision bone drill and method of use
US20170066068A1 (en) * 2014-05-24 2017-03-09 Andreas Stihl Ag & Co. Kg Handheld work apparatus
US9724840B2 (en) 1999-10-01 2017-08-08 Sd3, Llc Safety systems for power equipment
US20170252939A1 (en) * 2014-08-26 2017-09-07 Keith Blenkinsopp Productivity enhancement for band saw
US20170334087A1 (en) * 2001-03-13 2017-11-23 Sawstop Holding Llc Safety systems for power equipment
US20170352147A1 (en) * 2016-06-02 2017-12-07 Komatsu Industries Corporation Controller, forming machine, and control method
US9927796B2 (en) 2001-05-17 2018-03-27 Sawstop Holding Llc Band saw with improved safety system
US10118308B2 (en) 2013-10-17 2018-11-06 Sawstop Holding Llc Systems to mount and index riving knives and spreaders in table saws
DE102018107314A1 (en) * 2018-03-27 2019-10-02 Oehler Maschinen Fahrzeugbau GmbH Safety device for a circular saw, circular saw with such a safety device and method for operating a safety device for such a circular saw
DE102018216552A1 (en) * 2018-09-27 2020-04-02 Robert Bosch Gmbh Actuators for a braking element
DE102018216544A1 (en) * 2018-09-27 2020-04-23 Robert Bosch Gmbh Device and method for the safe sequence control of a hand tool
DE102018222413A1 (en) * 2018-12-20 2020-06-25 Robert Bosch Gmbh Hand tool with at least one safety brake device
DE102018222393A1 (en) * 2018-12-20 2020-06-25 Robert Bosch Gmbh Hand tool with at least one safety brake device
DE102019208898A1 (en) * 2019-06-19 2020-12-24 Robert Bosch Gmbh Hand machine tool with at least one safety brake device
US20210101304A1 (en) * 2019-10-03 2021-04-08 Lantern Holdings, LLC Removably mountable abnormal motion detection device and safety feature engagement tool
EP3239588B1 (en) 2016-04-28 2021-08-11 Felder KG Method for detecting a substance
US11098849B2 (en) 2016-05-31 2021-08-24 Sawstop Holding Llc Detection systems for power tools with active injury mitigation technology
US11097393B2 (en) * 2014-05-02 2021-08-24 Chih-Hui Chiu Protective apparatus for a machine tool
WO2022002759A1 (en) * 2020-07-01 2022-01-06 Festool Gmbh Safety brakes for circular saw blades, circular saws that include the safety brakes, and methods of operating circular saws
US11541567B2 (en) * 2019-08-22 2023-01-03 Chih-Hui Chiu Machine tool
US11685034B2 (en) 2014-05-24 2023-06-27 Andreas Stihl Ag & Co. Kg Handheld work apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1189603A (en) * 1915-04-21 1916-07-04 Charles E Michener Saw.
US1551900A (en) * 1924-12-05 1925-09-01 Robert L Morrow Safety device
US2798583A (en) * 1953-09-18 1957-07-09 Smith Corp A O Electric eye barrier guard
US3409842A (en) * 1966-07-01 1968-11-05 Electronic Machine Control Sal Protection systems and apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1189603A (en) * 1915-04-21 1916-07-04 Charles E Michener Saw.
US1551900A (en) * 1924-12-05 1925-09-01 Robert L Morrow Safety device
US2798583A (en) * 1953-09-18 1957-07-09 Smith Corp A O Electric eye barrier guard
US3409842A (en) * 1966-07-01 1968-11-05 Electronic Machine Control Sal Protection systems and apparatus

Cited By (310)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4075961A (en) * 1976-05-07 1978-02-28 Burlington Industries, Inc. Injury protection device for machinery
FR2352621A1 (en) * 1976-05-25 1977-12-23 Yoneda Kichi SAFETY DEVICE FOR EMERGENCY STOP OF A SHARP TAPE OF A CUTTING DEVICE
US4117752A (en) * 1976-05-25 1978-10-03 Kichi Yoneda Emergency system for stopping a band blade of a cutting apparatus
US4026177A (en) * 1976-07-21 1977-05-31 Lokey Tool, Inc. Rotary insulated saw blade
US4512224A (en) * 1982-04-01 1985-04-23 Kabushiki Kaisha Kindai Slitter device
US4683381A (en) * 1983-10-14 1987-07-28 Ets. Bonnet Controlled-access apparatus for the agricultural food industries
EP0138702A1 (en) * 1983-10-14 1985-04-24 Bonnet S.A. Apparatus for the food industry with access controlled by a device creating a variation in electrical impedance
US4753012A (en) * 1984-08-22 1988-06-28 Andreas Stihl Chain saw having a braking arrangement
US4804945A (en) * 1987-10-29 1989-02-14 Terrance Millet Door alarm with infrared and capacitive sensors
US4965909A (en) * 1988-10-04 1990-10-30 Mccullough Timothy J Safety control for power operated equipment
US5038473A (en) * 1990-02-28 1991-08-13 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Power saw
US5198702A (en) * 1990-03-07 1993-03-30 Mccullough Timothy J Control and safety system for electrically operated devices
US5272946A (en) * 1992-03-20 1993-12-28 Food Industry Equipment International, Inc. Safety control system for power operated equipment
US5510685A (en) * 1993-07-29 1996-04-23 Grasselli; Giorgio Electric motor control based on conductive contact of machine component with operator for injury prevention
US5666010A (en) * 1995-08-30 1997-09-09 Stratiotis; Gus Safety system for machine tools
US9724840B2 (en) 1999-10-01 2017-08-08 Sd3, Llc Safety systems for power equipment
WO2001026064A3 (en) * 1999-10-01 2003-09-04 Sd3 Llc Safety systems for power equipment
US20100236663A1 (en) * 1999-10-01 2010-09-23 Gass Stephen F Power equipment with detection and reaction systems
US9522476B2 (en) 1999-10-01 2016-12-20 Sd3, Llc Power equipment with detection and reaction systems
US7661343B2 (en) * 1999-10-01 2010-02-16 Sd3, Llc Brake mechanism for power equipment
US20170072582A1 (en) * 1999-10-01 2017-03-16 Sd3, Llc Power equipment with detection and reaction systems
EP1234285A2 (en) * 1999-10-01 2002-08-28 SD3, Llc Safety systems for power equipment
US8408106B2 (en) * 1999-10-01 2013-04-02 Sd3, Llc Method of operating power equipment with detection and reaction systems
US20110023673A1 (en) * 1999-10-01 2011-02-03 Gass Stephen F Power equipment with detection and reaction systems
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
US20090114070A1 (en) * 1999-10-01 2009-05-07 Gass Stephen F Safety system for power equipment
US8196499B2 (en) 1999-10-01 2012-06-12 Sd3, Llc Power equipment with detection and reaction systems
US20060179983A1 (en) * 1999-10-01 2006-08-17 Gass Stephen F Brake mechanism for power equipment
US20180215064A1 (en) * 1999-10-01 2018-08-02 Sawstop Holding Llc Table saws
US7788999B2 (en) * 1999-10-01 2010-09-07 Sd3, Llc Brake mechanism for power equipment
US10335972B2 (en) * 1999-10-01 2019-07-02 Sawstop Holding Llc Table Saws
EP1234285A4 (en) * 1999-10-01 2011-02-23 Sd3 Llc Safety systems for power equipment
US7895927B2 (en) 1999-10-01 2011-03-01 Sd3, Llc Power equipment with detection and reaction systems
US20120260782A1 (en) * 1999-10-01 2012-10-18 Gass Stephen F Power equipment with detection and reaction systems
US20110056351A1 (en) * 1999-10-01 2011-03-10 Gass Stephen F Table saw with improved safety system
US20110061768A1 (en) * 1999-10-01 2011-03-17 Gass Stephen F Brake mechanism for power equipment
US8291797B2 (en) 1999-10-01 2012-10-23 Sd3, Llc Table saw with improved safety system
EP1234285B1 (en) 1999-10-01 2016-06-15 Sd3, Llc Table saw safety system
US20070186737A1 (en) * 1999-10-01 2007-08-16 Gass Stephen F Brake mechanism for power equipment
US20100213018A1 (en) * 1999-10-01 2010-08-26 Gass Stephen F Brake mechanism for power equipment
AU785422B2 (en) * 1999-10-01 2007-05-03 Sawstop Holding Llc Safety systems for power equipment
US20070028733A1 (en) * 1999-10-01 2007-02-08 Gass Stephen F Safety methods for use in power equipment
US20060230896A1 (en) * 1999-10-01 2006-10-19 Gass Stephen F Miter saw with improved safety system
US8402869B2 (en) 1999-10-01 2013-03-26 Sd3, Llc Brake mechanism for power equipment
US20030115804A1 (en) * 2000-03-15 2003-06-26 Goran Sundolm Fire door and a fire protection system
US7958806B2 (en) 2000-08-14 2011-06-14 Sd3, Llc Replaceable brake mechanism for power equipment
US7921754B2 (en) 2000-08-14 2011-04-12 Sd3, Llc Logic control for fast-acting safety system
US20100192741A1 (en) * 2000-08-14 2010-08-05 Gass Stephen F 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
US20100180739A1 (en) * 2000-08-14 2010-07-22 Gass Stephen F Apparatus and method for detecting dangerous conditions in power equipment
US8413559B2 (en) 2000-08-14 2013-04-09 Sd3, Llc Apparatus and method for detecting dangerous conditions in power equipment
US8079292B2 (en) 2000-08-14 2011-12-20 Sd3, Llc Detection system for power equipment
US8191450B2 (en) * 2000-08-14 2012-06-05 Sd3, Llc Power equipment with detection and reaction systems
US20100132523A1 (en) * 2000-08-14 2010-06-03 Gass Stephen F Replaceable brake mechanism for power equipment
US8051759B2 (en) 2000-08-14 2011-11-08 Sd3, Llc Motion detecting system for use in a safety system for power equipment
US8438958B2 (en) 2000-08-14 2013-05-14 Sd3, Llc Detection system for power equipment
US20050139051A1 (en) * 2000-08-14 2005-06-30 Gass Stephen F. Brake positioning system
US8011279B2 (en) * 2000-08-14 2011-09-06 Sd3, Llc Power equipment with systems to mitigate or prevent injury
US20020017175A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Translation stop for use in power equipment
US20060272463A1 (en) * 2000-08-14 2006-12-07 Gass Stephen F 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
US8006595B2 (en) 2000-08-14 2011-08-30 Sd3, Llc Apparatus and method for detecting dangerous conditions in power equipment
US20020017176A1 (en) * 2000-08-14 2002-02-14 Gass Stephen F. Detection system for power equipment
US7698976B2 (en) * 2000-08-14 2010-04-20 Sd3, Llc Miter saw with improved safety system
US7228772B2 (en) * 2000-08-14 2007-06-12 Sd3, Llc Brake positioning system
US20100089212A1 (en) * 2000-08-14 2010-04-15 Gass Stephen F Logic control for fast-acting safety system
US9038515B2 (en) * 2000-08-14 2015-05-26 Sd3, Llc Logic control for fast-acting safety system
US8490527B2 (en) 2000-08-14 2013-07-23 Sd3, Llc Power equipment with systems to mitigate or prevent injury
US20110023670A1 (en) * 2000-08-14 2011-02-03 Gass Stephen F Power equipment with detection and reaction systems
US7681479B2 (en) 2000-08-14 2010-03-23 Sd3, Llc Motion detecting system for use in a safety system for power equipment
US20070199622A1 (en) * 2000-08-14 2007-08-30 Gass Stephen F Detection system 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
US20020020265A1 (en) * 2000-08-14 2002-02-21 Gass Stephen F. Translation stop for use in power equipment
US7908950B2 (en) * 2000-08-14 2011-03-22 Sd3 Table saw with improved safety system
US20080029184A1 (en) * 2000-08-14 2008-02-07 Gass Stephen F Brake positioning system
US8371196B2 (en) 2000-08-14 2013-02-12 Sd3, Llc Motion detecting system for use in a safety system for power equipment
US20080041204A1 (en) * 2000-08-14 2008-02-21 Gass Stephen F Apparatus and method for detecting dangerous conditions in power equipment
US8151675B2 (en) 2000-08-14 2012-04-10 Sd3, Llc Logic control for fast-acting safety system
US20100251866A1 (en) * 2000-08-14 2010-10-07 Gass Stephen F Motion detecting system for use in a safety system for power equipment
US7359174B2 (en) * 2000-08-14 2008-04-15 Sd3, Llc Motion detecting system for use in a safety system for power equipment
US20080092702A1 (en) * 2000-08-14 2008-04-24 Gass Stephen F Spring-biased brake mechanism for power equipment
US20120260781A1 (en) * 2000-08-14 2012-10-18 Gass Stephen F Logic control for fast-acting safety system
US7832314B2 (en) 2000-08-14 2010-11-16 Sd3, Llc Brake positioning system
US7640837B2 (en) * 2000-08-14 2010-01-05 Sd3, Llc Table saw with improved safety system
US7640835B2 (en) * 2000-08-14 2010-01-05 Sd3, Llc Apparatus and method for detecting dangerous conditions in power equipment
US6957601B2 (en) * 2000-08-14 2005-10-25 Sd3, Llc Translation stop for use in power equipment
US20140165801A1 (en) * 2000-08-14 2014-06-19 Sd3, Llc Logic control for fast-acting safety system
US20080184858A1 (en) * 2000-08-14 2008-08-07 Gass Stephen F Table saw with improved safety system
US8522655B2 (en) * 2000-08-14 2013-09-03 Sd3, Llc Logic control for fast-acting safety system
US20080282858A1 (en) * 2000-08-14 2008-11-20 Gass Stephen F Miter saw with improved safety system
US8065943B2 (en) 2000-09-18 2011-11-29 Sd3, Llc Translation stop for use in power equipment
US8186255B2 (en) 2000-09-29 2012-05-29 Sd3, Llc Contact detection system for power equipment
US6826988B2 (en) 2000-09-29 2004-12-07 Sd3, Llc Miter saw with improved safety system
US20080295660A1 (en) * 2000-09-29 2008-12-04 Gass Stephen F Contact detection system for power equipment
US6945148B2 (en) 2000-09-29 2005-09-20 Sd3, Llc Miter saw with improved safety system
US6994004B2 (en) 2000-09-29 2006-02-07 Sd3, Llc Table saw with improved safety system
US20090133553A1 (en) * 2000-09-29 2009-05-28 Gass Stephen F Table saw with improved safety system
US7784507B2 (en) 2000-09-29 2010-08-31 Sd3, Llc Router with improved safety system
US8061245B2 (en) 2000-09-29 2011-11-22 Sd3, Llc Safety methods for use in power equipment
US6880440B2 (en) 2000-09-29 2005-04-19 Sd3, Llc Miter saw with improved safety system
US7789002B2 (en) 2000-09-29 2010-09-07 Sd3, Llc Table saw with improved safety system
US6813983B2 (en) 2000-09-29 2004-11-09 Sd3, Llc Power saw with improved safety system
US20020059854A1 (en) * 2000-09-29 2002-05-23 Gass Stephen F. Miter saw with improved safety system
US7377199B2 (en) 2000-09-29 2008-05-27 Sd3, Llc Contact detection system for power equipment
US7617752B2 (en) 2000-09-29 2009-11-17 Sd3, Llc Contact detection system for power equipment
US20020069734A1 (en) * 2000-09-29 2002-06-13 Gass Stephen F. Contact detection system for power equipment
US20190016006A1 (en) * 2001-03-13 2019-01-17 Sawstop Holding Llc Safety systems for power equipment
US20170334087A1 (en) * 2001-03-13 2017-11-23 Sawstop Holding Llc Safety systems for power equipment
US10071499B2 (en) * 2001-03-13 2018-09-11 Sawstop Holding Llc Safety systems for power equipment
US9927796B2 (en) 2001-05-17 2018-03-27 Sawstop Holding Llc Band saw with improved safety system
US20020190581A1 (en) * 2001-06-13 2002-12-19 Gass Stephen F. Apparatus and method for detecting dangerous conditions in power equipment
US7231856B2 (en) 2001-06-13 2007-06-19 Sd3, Llc Apparatus and method for detecting dangerous conditions in power equipment
US20030002942A1 (en) * 2001-07-02 2003-01-02 Gass Stephen F. Discrete proximity detection system
US20070131071A1 (en) * 2001-07-02 2007-06-14 Gass Stephen F Discrete proximity detection system
US20100083804A1 (en) * 2001-07-02 2010-04-08 Gass Stephen F Discrete proximity detection system
US20030005588A1 (en) * 2001-07-03 2003-01-09 Gass Stephen F. Actuators for use in fast-acting safety systems
US7712403B2 (en) * 2001-07-03 2010-05-11 Sd3, Llc Actuators for use in fast-acting safety systems
US8186256B2 (en) 2001-07-11 2012-05-29 Black & Decker Inc. Power tool safety mechanisms
US20040226424A1 (en) * 2001-07-11 2004-11-18 O'banion Michael Power tool safety mechanisms
US7827889B2 (en) * 2001-07-11 2010-11-09 Black & Decker, Inc. Power tool safety mechanisms
US7373863B2 (en) 2001-07-11 2008-05-20 Black & Decker Inc. Power tool safety mechanisms
US20110079124A1 (en) * 2001-07-11 2011-04-07 Black & Decker Inc. Power tool safety mechanisms
US9267644B2 (en) 2001-07-11 2016-02-23 Black & Decker Inc. Power tool safety mechanisms
US20080078470A1 (en) * 2001-07-11 2008-04-03 O'branion Michael Power tool safety mechanisms
US9446533B2 (en) 2001-07-11 2016-09-20 Black & Decker Inc. Power tool safety mechanisms
WO2003006213A3 (en) * 2001-07-11 2004-01-22 Black & Decker Inc Power tool safety mechanisms
WO2003006213A2 (en) * 2001-07-11 2003-01-23 Black & Decker Inc. Power tool safety mechanisms
US8408107B2 (en) 2001-07-11 2013-04-02 Black & Decker Inc. Power tool safety mechanisms
US20030020336A1 (en) * 2001-07-25 2003-01-30 Gass Stephen F. Actuators for use in fast-acting safety systems
US7000514B2 (en) 2001-07-27 2006-02-21 Sd3, Llc Safety systems for band saws
US20030058121A1 (en) * 2001-09-24 2003-03-27 Gass Stephen F. Logic control with test mode for fast-acting safety system
US7197969B2 (en) * 2001-09-24 2007-04-03 Sd3, Llc Logic control with test mode for fast-acting safety system
US7900541B2 (en) 2001-11-13 2011-03-08 Sd3, Llc Detection system for power equipment
US7077039B2 (en) 2001-11-13 2006-07-18 Sd3, Llc Detection system for power equipment
US8061246B2 (en) 2002-01-14 2011-11-22 Sd3, Llc Miter saw with improved safety system
US20100257988A1 (en) * 2002-01-14 2010-10-14 Gass Stephen F Miter saw with improved safety system
US8430005B2 (en) 2002-01-14 2013-04-30 Sd3, Llc Miter saw with improved safety system
US20080134852A1 (en) * 2002-01-14 2008-06-12 Gass Stephen F Miter saw with improved safety system
US7685912B2 (en) * 2002-01-14 2010-03-30 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
US20100180741A1 (en) * 2002-01-16 2010-07-22 Gass Stephen F Apparatus and method for detecting dangerous conditions in power equipment
US7644645B2 (en) 2002-01-16 2010-01-12 Sd3, Llc Apparatus and method for detecting dangerous conditions in power equipment
US6900728B2 (en) * 2002-07-29 2005-05-31 Home Depot U.S.A., Inc. System to detect user entry into a defined danger zone
US20040017294A1 (en) * 2002-07-29 2004-01-29 Metzger James I. System to detect user entry into a defined danger zone
US20040060404A1 (en) * 2002-09-30 2004-04-01 Emerson Electric Co. Breakaway hub for saw
EP1422022A1 (en) * 2002-11-12 2004-05-26 Makita Corporation Power tools
US6959631B2 (en) 2002-11-12 2005-11-01 Makita Corporation Power tools
US20040200329A1 (en) * 2002-11-12 2004-10-14 Makita Corporation Power tools
US20060000332A1 (en) * 2002-11-12 2006-01-05 Makita Corporation Power tools
US7047854B2 (en) 2002-11-12 2006-05-23 Makita Corporation Power tools
CN100389939C (en) * 2002-11-12 2008-05-28 株式会社牧田 Power tools
US20040123709A1 (en) * 2002-12-30 2004-07-01 Emerson Electric Co. System for sensing user contact with a saw blade
US20040194594A1 (en) * 2003-01-31 2004-10-07 Dils Jeffrey M. Machine safety protection system
US7698975B2 (en) * 2003-01-31 2010-04-20 Techtronic Power Tools Technology Limited Table saw with cutting tool retraction system
US20040159198A1 (en) * 2003-01-31 2004-08-19 Peot David G. Table saw with cutting tool retraction system
US20060041241A1 (en) * 2003-03-25 2006-02-23 Herndon Terry O Drill device and method for forming microconduits
US8636748B2 (en) 2003-03-25 2014-01-28 Path Scientific, Llc Drill device and method for forming microconduits
US8241229B2 (en) 2003-03-25 2012-08-14 Path Scientific, Llc Drill device and method for forming microconduits
US7848799B2 (en) 2003-03-25 2010-12-07 Path Scientific, Llc Drill device and method for forming microconduits
US20110040237A1 (en) * 2003-03-25 2011-02-17 Herndon Terry O Drill device and method for forming microconduits
US20110046507A1 (en) * 2003-03-25 2011-02-24 Herndon Terry O Drill device and method for forming microconduits
US20110046626A1 (en) * 2003-03-25 2011-02-24 Herndon Terry O Drill device and method for forming microconduits
US9022949B2 (en) 2003-03-25 2015-05-05 Path Scientific, Llc Drill device and method for forming microconduits
US7836804B2 (en) 2003-08-20 2010-11-23 Sd3, Llc Woodworking machines with overmolded arbors
US20070101842A1 (en) * 2003-08-20 2007-05-10 Gass Stephen F Woodworking machines with overmolded arbors
US20090178524A1 (en) * 2003-08-20 2009-07-16 Gass Stephen F Woodworking machines with overmolded arbors
US7084779B2 (en) 2003-09-12 2006-08-01 Makita Corporation Power tool
US20050057206A1 (en) * 2003-09-12 2005-03-17 Makita Corporation Power tool
US7827893B2 (en) 2003-12-31 2010-11-09 Sd3, Llc Elevation mechanism for table saws
US7707920B2 (en) 2003-12-31 2010-05-04 Sd3, Llc Table saws with safety systems
US20170312837A1 (en) * 2003-12-31 2017-11-02 Sd3, Llc Table saws
US9623498B2 (en) 2003-12-31 2017-04-18 Sd3, Llc Table saws
US20070151433A1 (en) * 2003-12-31 2007-07-05 Gass Stephen F Elevation mechanism for table saws
US20070175306A1 (en) * 2003-12-31 2007-08-02 Gass Stephen F Elevation mechanism for table saws
US8122807B2 (en) 2003-12-31 2012-02-28 Sd3, Llc Table saws with safety systems
US8489223B2 (en) 2003-12-31 2013-07-16 Sd3, Llc Detection systems for power equipment
US7991503B2 (en) 2003-12-31 2011-08-02 Sd3, Llc Detection systems for power equipment
US7866239B2 (en) 2003-12-31 2011-01-11 Sd3, Llc Elevation mechanism for table saws
US8459157B2 (en) 2003-12-31 2013-06-11 Sd3, Llc Brake cartridges and mounting systems for brake cartridges
US8087438B2 (en) 2003-12-31 2012-01-03 Sd3, Llc Detection systems for power equipment
US20100288095A1 (en) * 2003-12-31 2010-11-18 Gass Stephen F Table saws with safety systems
US8498732B2 (en) 2003-12-31 2013-07-30 Sd3, Llc Detection systems for power equipment
US10442108B2 (en) * 2003-12-31 2019-10-15 Sawstop Holding Llc Table saws
US10882207B2 (en) 2004-01-29 2021-01-05 Sawstop Holding Llc Table saws with safety systems and systems to mount and index attachments
US10052786B2 (en) 2004-01-29 2018-08-21 Sawstop Holding 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
US8505424B2 (en) 2004-01-29 2013-08-13 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
US7963468B2 (en) 2004-09-10 2011-06-21 Fellowes, Inc. Shredder with thickness detector
US7946515B2 (en) 2004-09-10 2011-05-24 Fellowes, Inc. Shredder throat safety system
US20060054725A1 (en) * 2004-09-10 2006-03-16 Fellowes, Inc. Shredder throat safety system
US20100102153A1 (en) * 2004-09-10 2010-04-29 Fellowes, Inc. Shredder throat safety system
US20100084496A1 (en) * 2004-09-10 2010-04-08 Fellowes, Inc. Shredder with thickness detector
US8870106B2 (en) 2004-09-10 2014-10-28 Fellowes, Inc. Shredder with thickness detector
US20110186663A1 (en) * 2004-09-10 2011-08-04 Fellowes Inc. Shredder with thickness detector
US8783592B2 (en) 2004-09-10 2014-07-22 Fellowes, Inc. Shredder with thickness detector
US20080105772A2 (en) * 2004-09-10 2008-05-08 Fellowes Inc. Shredder throat safety system
US7661614B2 (en) 2004-09-10 2010-02-16 Fellowes Inc. Shredder throat safety system
US7946514B2 (en) 2004-09-10 2011-05-24 Fellowes, Inc. Shredder with thickness detector
US20060185492A1 (en) * 2005-02-18 2006-08-24 Francois Chianese Shoulder bushing for saw blades
US8672247B2 (en) 2005-07-11 2014-03-18 Fellowes, Inc. Shredder with thickness detector
US9573135B2 (en) 2005-07-11 2017-02-21 Fellowes, Inc. Shredder with thickness detector
US8757526B2 (en) 2005-07-11 2014-06-24 Fellowes, Inc. Shredder with thickness detector
USRE44161E1 (en) 2005-07-11 2013-04-23 Fellowes, Inc. Shredder with thickness detector
US20080014830A1 (en) * 2006-03-24 2008-01-17 Vladimir Sosnovskiy Doll system with resonant recognition
US20080041207A1 (en) * 2006-07-14 2008-02-21 Aurora Office Equipment Co., Ltd. Touch-sensitive paper shredder control system
US7622831B2 (en) 2006-07-14 2009-11-24 Aurora Office Equipment Co., Ltd. Shanghai Touch-sensitive paper shredder control system
US8963379B2 (en) 2006-07-14 2015-02-24 Aurora Office Equipment Co., Ltd. Shanghai Paper shredder control system responsive to touch-sensitive element
US8018099B2 (en) 2006-07-14 2011-09-13 Aurora Office Equipment Co., Ltd. Touch-sensitive paper shredder control system
US8008812B2 (en) 2006-07-14 2011-08-30 Aurora Office Equipment Co., Ltd. Paper shredder control system responsive to touch-sensitive element
US20080028622A1 (en) * 2006-08-07 2008-02-07 Trbovich Nicholas D Tool handle assembly having electrically insulated handle end piece
US20080053994A1 (en) * 2006-08-30 2008-03-06 Aurora Office Equipment Co., Ltd. Shanghai Paper-Breaker Wastebin Structure
US8316547B2 (en) * 2006-12-12 2012-11-27 Robert Bosch Gmbh Protection device for a hand-held power tool
US20090277020A1 (en) * 2006-12-12 2009-11-12 Joachim Hecht Protection device for a hand-held power tool
CN101557699A (en) * 2006-12-12 2009-10-14 罗伯特·博世有限公司 Hand tool machine protection device
US7841266B2 (en) * 2007-01-22 2010-11-30 Robert Bosch Gmbh Proximity sensor for stationary power tools
US20080173147A1 (en) * 2007-01-22 2008-07-24 Credo Technology Corporation & Robert Bosch Gmbh Proximity sensor for stationary power tools
US20080196565A1 (en) * 2007-02-20 2008-08-21 Eppard Erin F Injury mitigation system for power tools
US8051758B2 (en) 2007-02-20 2011-11-08 Robert Bosch Gmbh Injury mitigation system for power tools
US20100180740A1 (en) * 2007-07-11 2010-07-22 Reiner Krapf Machine tool having a safety unit and a calibration unit for calibrating the safety unit
US9669410B2 (en) 2007-08-02 2017-06-06 ACCO Brands Corporation Shredding machine
US20110180641A1 (en) * 2007-08-02 2011-07-28 Acco Uk Limited Shredding machine
US10576476B2 (en) 2007-08-02 2020-03-03 ACCO Brands Corporation Shredding machine
US8162244B2 (en) 2007-08-02 2012-04-24 Acco Uk Limited Shredding machine
US20090032629A1 (en) * 2007-08-02 2009-02-05 Acco Uk Limited Shredding machine
US8464767B2 (en) 2007-10-04 2013-06-18 Fellowes, Inc. Shredder thickness with anti-jitter feature
US8113451B2 (en) 2007-10-04 2012-02-14 Fellowes, Inc. Shredder thickness with anti-jitter feature
US8424787B2 (en) 2007-10-04 2013-04-23 Fellowes, Inc. Shredder thickness with anti-jitter feature
US20090090797A1 (en) * 2007-10-04 2009-04-09 Fellowes Inc. Shredder thickness with anti-jitter feature
US7954737B2 (en) 2007-10-04 2011-06-07 Fellowes, Inc. Shredder thickness with anti-jitter feature
US8500049B2 (en) 2007-10-04 2013-08-06 Fellowes, Inc. Shredder thickness with anti-jitter feature
US8020796B2 (en) 2007-10-04 2011-09-20 Fellowes, Inc. Shredder thickness with anti-jitter feature
US9044759B2 (en) 2007-10-04 2015-06-02 Fellowes, Inc. Shredder thickness with anti-jitter feature
US20100252664A1 (en) * 2007-10-04 2010-10-07 Fellowes, Inc. Shredder thickness with anti-jitter feature
US9724704B2 (en) 2007-10-04 2017-08-08 Fellowes Inc. Shredder thickness with anti-jitter feature
US20090094839A1 (en) * 2007-10-11 2009-04-16 Earl Votolato Electronic Utility Knife with Safety Reaction System
US8978529B2 (en) 2007-10-22 2015-03-17 Formax, Inc. Food article feed apparatus for a food article slicing machine
US20090188358A1 (en) * 2007-10-22 2009-07-30 David Hansen Output Conveyor for a Food Article Slicing Machine
US8616103B2 (en) * 2007-10-22 2013-12-31 Formax, Inc Knife blade retraction mechanism for a food article slicing machine
US8850938B2 (en) 2007-10-22 2014-10-07 Formax, Inc. Maintenance and safety system for a food article slicing machine
US20090188357A1 (en) * 2007-10-22 2009-07-30 Lindee Scott A Information Carrier System for a Food Article Slicing Machine
US20090173196A1 (en) * 2007-10-22 2009-07-09 Lindee Scott A Maintenance and Safety System for a Food Article Slicing Machine
US8549966B2 (en) 2007-10-22 2013-10-08 Formax, Inc. Output conveyor for a food article slicing machine
US20090151527A1 (en) * 2007-10-22 2009-06-18 Lindee Scott A Knife Blade Retraction Mechanism for a Food Article Slicing Machine
US20090120256A1 (en) * 2007-10-22 2009-05-14 Pasek James E Food Article Feed Apparatus for a Food Article Slicing Machine
US8670844B2 (en) * 2008-01-11 2014-03-11 Robert Bosch Gmbh Device, particularly protective sensor system, for a machine tool
US20110022188A1 (en) * 2008-01-11 2011-01-27 Reiner Krapf Device, particularly protective sensor system, for a machine tool
US20110308365A1 (en) * 2008-04-24 2011-12-22 Yuan Ze University Safety device for machine tool
US8146845B2 (en) 2008-08-06 2012-04-03 Aurora Office Equipment Co., Ltd. Shanghai Automatic shredder without choosing the number of paper to be shredded
US9981326B2 (en) 2008-08-18 2018-05-29 Sawstop Holding Llc Table saw
US20100050843A1 (en) * 2008-08-18 2010-03-04 Gass Stephen F Table saw
US8201766B2 (en) 2008-08-19 2012-06-19 Aurora Office Equipment Co., Ltd. Pins or staples removable structure of automatic shredders
US20100050836A1 (en) * 2008-08-28 2010-03-04 Juergen Seidel Machine tool protective device
US8430347B2 (en) 2009-01-05 2013-04-30 Fellowes, Inc. Thickness adjusted motor controller
US8201761B2 (en) 2009-01-05 2012-06-19 Fellowes, Inc. Thickness sensor based motor controller
US20100170969A1 (en) * 2009-01-05 2010-07-08 Fellowes, Inc. Thickness adjusted motor controller
US20100243774A1 (en) * 2009-03-24 2010-09-30 Fellowers, Inc. Shredder with jam proof system
US8091809B2 (en) 2009-03-24 2012-01-10 Fellowes, Inc. Shredder with jam proof system
US20100257743A1 (en) * 2009-04-08 2010-10-14 Rex George Systems and Methods for a Chainsaw Safety Device
US8752301B2 (en) * 2009-04-08 2014-06-17 Rex George Chainsaw incorporating a safety device system
US10071500B2 (en) 2009-04-08 2018-09-11 Rex George Safety system for a chainsaw
US20100270404A1 (en) * 2009-04-28 2010-10-28 Aurora Office Equipment Co., Ltd. Shanghai type protection device for shredders
US20100282879A1 (en) * 2009-05-07 2010-11-11 Aurora Office Equipment Co., Ltd.Shanghai Anti-paper jam protection device for shredders
US8087599B2 (en) 2009-05-07 2012-01-03 Aurora Office Equipment Co., Ltd. Anti-paper jam protection device for shredders
US8205815B2 (en) 2009-05-15 2012-06-26 Fellowes, Inc. Paper alignment sensor arrangement
US20100288861A1 (en) * 2009-05-15 2010-11-18 Fellowes, Inc. Paper alignment sensor arrangement
US20100307307A1 (en) * 2009-06-09 2010-12-09 Butler David J Health and safety system for a table saw
US20120090439A1 (en) * 2009-06-09 2012-04-19 Butler David J Health and safety system for a table saw
US8082825B2 (en) * 2009-06-09 2011-12-27 Butler David J Health and safety system for a table saw
US20100320299A1 (en) * 2009-06-18 2010-12-23 Fellowes, Inc. Restrictive throat mechanism for paper shredders
US8678305B2 (en) 2009-06-18 2014-03-25 Fellowes, Inc. Restrictive throat mechanism for paper shredders
US8550387B2 (en) 2009-06-18 2013-10-08 Tai Hoon K. Matlin Restrictive throat mechanism for paper shredders
US20100320297A1 (en) * 2009-06-18 2010-12-23 Fellowes, Inc. Restrictive throat mechanism for paper shredders
US20100327091A1 (en) * 2009-06-24 2010-12-30 Techko, Inc. Safety systems and methods for controlling operation of office equipment
US8382019B2 (en) 2010-05-03 2013-02-26 Fellowes, Inc. In-rush current jam proof sensor control
US8511593B2 (en) 2010-05-28 2013-08-20 Fellowes, Inc. Differential jam proof sensor for a shredder
US8528452B2 (en) 2010-12-17 2013-09-10 Jeff Buchanan Safety system and method for cutting machine
US9044760B2 (en) 2010-12-17 2015-06-02 Jeff Buchanan Wearable safety device for cutting machine
US8322259B2 (en) 2010-12-17 2012-12-04 Jeff Buchanan Safety system and method for cuttinig machine
US8723468B2 (en) 2011-04-28 2014-05-13 Aurora Office Equipment Co., Ltd. Cooled motor
US8708260B2 (en) 2011-08-08 2014-04-29 Aurora Office Equipment Co., Ltd. Depowered standby paper shredder and method
US8950305B1 (en) * 2011-08-09 2015-02-10 Innovative Engineering Solutions, Inc. Saw brake
US8336432B1 (en) * 2011-08-19 2012-12-25 David J Butler Safety system for machine tools
US9345487B2 (en) 2013-02-05 2016-05-24 Path Scientific, Llc Precision bone drill and method of use
US20140251105A1 (en) * 2013-03-11 2014-09-11 Robert Bosch Tool Corporation Power Tool With Ferrous Contaminant Detection
US20140331833A1 (en) * 2013-05-13 2014-11-13 Stephen F. Gass 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
US11097393B2 (en) * 2014-05-02 2021-08-24 Chih-Hui Chiu Protective apparatus for a machine tool
US10675694B2 (en) 2014-05-24 2020-06-09 Andreas Stihl Ag & Co. Kg Handheld work apparatus
US20170066068A1 (en) * 2014-05-24 2017-03-09 Andreas Stihl Ag & Co. Kg Handheld work apparatus
US11685034B2 (en) 2014-05-24 2023-06-27 Andreas Stihl Ag & Co. Kg Handheld work apparatus
US10610938B2 (en) * 2014-05-24 2020-04-07 Andreas Stihl Ag & Co. Kg Handheld work apparatus
US10603808B2 (en) * 2014-08-26 2020-03-31 Kando Innovation Limited Productivity enhancement for band saw
US20170252939A1 (en) * 2014-08-26 2017-09-07 Keith Blenkinsopp Productivity enhancement for band saw
EP3239588B1 (en) 2016-04-28 2021-08-11 Felder KG Method for detecting a substance
US11413717B2 (en) 2016-04-28 2022-08-16 Felder Kg Method for detecting a substance
US11098849B2 (en) 2016-05-31 2021-08-24 Sawstop Holding Llc Detection systems for power tools with active injury mitigation technology
US20170352147A1 (en) * 2016-06-02 2017-12-07 Komatsu Industries Corporation Controller, forming machine, and control method
US10685450B2 (en) * 2016-06-02 2020-06-16 Komatsu Industries Corporation Controller, forming machine, and control method
DE102018107314B4 (en) 2018-03-27 2019-10-10 Oehler Maschinen Fahrzeugbau GmbH Safety device for a circular saw, circular saw with such a safety device and method for operating a safety device for such a circular saw
DE102018107314A1 (en) * 2018-03-27 2019-10-02 Oehler Maschinen Fahrzeugbau GmbH Safety device for a circular saw, circular saw with such a safety device and method for operating a safety device for such a circular saw
DE102018216544A1 (en) * 2018-09-27 2020-04-23 Robert Bosch Gmbh Device and method for the safe sequence control of a hand tool
DE102018216552A1 (en) * 2018-09-27 2020-04-02 Robert Bosch Gmbh Actuators for a braking element
DE102018222393A1 (en) * 2018-12-20 2020-06-25 Robert Bosch Gmbh Hand tool with at least one safety brake device
DE102018222413A1 (en) * 2018-12-20 2020-06-25 Robert Bosch Gmbh Hand tool with at least one safety brake device
DE102019208898A1 (en) * 2019-06-19 2020-12-24 Robert Bosch Gmbh Hand machine tool with at least one safety brake device
US11541567B2 (en) * 2019-08-22 2023-01-03 Chih-Hui Chiu Machine tool
US20210101304A1 (en) * 2019-10-03 2021-04-08 Lantern Holdings, LLC Removably mountable abnormal motion detection device and safety feature engagement tool
WO2022002759A1 (en) * 2020-07-01 2022-01-06 Festool Gmbh Safety brakes for circular saw blades, circular saws that include the safety brakes, and methods of operating circular saws

Similar Documents

Publication Publication Date Title
US3785230A (en) Automatic safety brake for rotary blade equipment
JPS61262012A (en) Feeder/cutter/stripper for insulated wire
GB1535054A (en) Massaging machine
US4287820A (en) Spiral meat slicer
US3453917A (en) Bx cable cutter
US2830629A (en) Woodworking machine provided with means for automatically positioning its planer head, responsive to dimensional variations in work pieces
EP1201378A2 (en) Slice thickness adjustment assembly for a slicer
US3502301A (en) Reversing control
GB1331858A (en) Electric scissors
US2757734A (en) Traveling cut-off machine
ATE158744T1 (en) SAFETY DEVICE FOR A SLICING MACHINE
US4660449A (en) Stock feeding apparatus
US20200164474A1 (en) Machine for cutting meat with improved safety system
US3185005A (en) Cutting machine
US2744554A (en) Slicing machine control
US4713950A (en) Device adapted to move the sharpening grinding wheels in a leather splitting machine close to and away from a cutting blade
SE8105717L (en) Horizontal band saw machine
US2023530A (en) Meat skinner
US3039409A (en) Control switch for bag sewing machine
KR102259812B1 (en) Cutting safety device of band saw machine
FR2305102A7 (en) SAFETY DEVICE, ESPECIALLY FOR CHAIN SAW
US3461765A (en) Automatic cutting mechanism
DE832421C (en) Foreign body triggering or switching device for machines for cutting tobacco and similar goods
GB1394707A (en) Rod-cutting devices
US1960931A (en) Guard for slicing machines