1
William R Knapp, Jean Pierre Krauer, Wilfred H Anderson, Kyle L Petrich, Jeffrey Y Hayashida, Helen J Yoo: Pyrotechnic drop mechanism for power tools. Power Tool Institute, K&L Gates, December 8, 2009: US07628101 (31 worldwide citation)

A saw comprises a surface having an opening defined therein, a plate structure configured to be attached to the saw below the surface, and an arm pivotally attached to the plate structure about a first shaft. A blade is configured to be engaged with the arm at a location spaced from the first shaft. ...


2
Fred J Heinzmann, David C Shafer: Power cutting tool comprising a radar sensing system. Power Tool Institute, K & L Gates, September 9, 2008: US07421932 (23 worldwide citation)

A power cutting tool having a movable blade, such as a table saw, comprising a radar sensing system for movement of an object in a region near the blade is disclosed. The radar sensing system emits a radio frequency wave and receives wave energy reflected by the object. The system measures the Doppl ...


3
Vladimir Tetelbaum, Darius Mostowfi, Richard Surprenant: Detection system for power tool. Power Tool Institute, K&L Gates, June 22, 2010: US07739934 (22 worldwide citation)

Power tool includes a movable blade and a detection system for detecting contact between the blade and an object. Detection system includes an excitation plate capacitively coupling the drive signal to the movable blade. A circuit generates an in phase component signal and a quadrature component sig ...


4
David C Shafer, Jean Pierre Krauer: Capacitive sensing system for power cutting tool. Power Tool Institute, K&L Gates, February 15, 2011: US07888826 (16 worldwide citation)

A capacitive sensing system for use with a power cutting tool of the type which has an exposed, moveable blade adjacent a work surface is disclosed. The sensing system drives an excitation voltage onto the exposed blade and monitors the current drawn from the blade, detects changes in the amplitude ...


5
David Shafer, David Titzler, John Gilbert: Power cutting tool with proximity sensing system. Power Tool Institute, February 28, 2012: US08122798 (13 worldwide citation)

A power cutting tool includes a cutting surface, a conductive structure, and first electrode matrix comprising an array of electrical conductors. A moveable blade used to cut an object is located on the cutting surface. When at least one electrical conductor of the first electrode matrix is energize ...


6
David V Keller, Mark D Hickok, Peter L Domeny, Thornton H Gogoll III, David G Peot, Stan M Rodrigues, Christopher S Tennant: Safety devices for saws. Power Tool Institute, K&L Gates, January 10, 2012: US08091456 (5 worldwide citation)

In various embodiments, a saw can include a work surface and a blade at least partially extending through the work surface. In at least one embodiment, the saw can further include a sensor and a light emitter, wherein the light emitter can be configured to emit a first light beam and a second light ...


7
BUTLER ANDY: Safety mechanisms for power tools. POWER TOOL INSTITUTE, Knedeisen Mark G, May 27, 2010: WO/2010/059786 (5 worldwide citation)

Various safety systems for power tools, and in particular table saws, are disclosed herein. The disclosed safety systems include detection systems for detecting a dangerous condition relative to a blade of the power tool, reaction systems for taking mitigation action in response to detection of a da ...


8
Andy Butler, Brian Lamb, Chris Tacklind, Clinton Lazzari, Edward Cooper, Eric Edward Schultz, Frank Buhrmann, John Gilbert, David Titzler, William Scott, Peter L Domeny: Safety mechanisms for power tools. Power Tool Institute, K&L Gates, December 30, 2014: US08919231 (4 worldwide citation)

Various safety systems for power tools, and in particular table saws, include detection systems for detecting a dangerous condition relative to a blade of the power tool, and reaction systems for taking mitigation action in response to detection of a dangerous condition. The safety system may detect ...


9
David C Shafer, Jean Pierre Krauer: Capacitive sensing system for power cutting tool. Power Tool Institute, K&L Gates, September 28, 2010: US07804204 (4 worldwide citation)

A capacitive sensing system for use with a power cutting tool of the type which has an exposed, moveable blade adjacent a work surface is disclosed. The sensing system drives an excitation voltage onto the exposed blade and monitors the current drawn from the blade, detects changes in the amplitude ...


10
David V Keller, Mark D Hickok, Peter L Domeny, Thornton H Gogoll III, David G Peot, Stan M Rodrigues, Christopher S Tennant: Saw accessories and clamp for use therewith. Power Tool Institute, K&L Gates, December 27, 2011: US08082826 (3 worldwide citation)

In at least one form of the invention, a clamp can be used to attach a saw accessory to a saw. In various embodiments, the clamp can comprise first and second clamping members, an actuator, and a controller. In various embodiments, the saw accessory can be disposed between the first and second clamp ...