Patents by Inventor J. David Fulmer
J. David Fulmer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10092968Abstract: Table saws and features for table saws are disclosed. Some of the disclosed features are particularly relevant to portable table saws such as jobsite and bench-top table saws. Disclosed features include, but are not limited to, extendable rails, mechanisms to lock rails in position, drawers, compartments and components to store table saw accessories, switch boxes, dust collection systems, table saw housings, tables, and handles.Type: GrantFiled: October 30, 2014Date of Patent: October 9, 2018Assignee: SawStop Holding LLCInventors: J. David Fulmer, John P. Nenadic, Paul H. Stasiewicz, Hollan A. Tsuda, Jeffrey D. Weston
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Patent number: 10052786Abstract: Table saws and table saws designed to implement safety systems that detect contact between a person and a dangerous portion of the saw are disclosed. Table saw components, mounting systems for table saws, and table saw attachments are also disclosed. One embodiment may include a first clamp surface, a second clamp surface spaced apart from the first clamp surface so that a base portion of a riving knife or splitter can be placed between the clamp surfaces with the opposing sides of the base portion generally parallel to the first and second clamp surfaces.Type: GrantFiled: August 12, 2013Date of Patent: August 21, 2018Assignee: SawStop Holding LLCInventors: Stephen F. Gass, J. David Fulmer, David A. Fanning
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Publication number: 20180215064Abstract: Table saws with safety systems are disclosed. The safety systems detect and react to dangerous conditions, such as contact between the blade and a person. The table saws may include a switch, a first light that illuminates to indicate the safety system is operable, and a second light that illuminates to indicate that the safety system is inoperable. The switch may not power the saw when switched on if the second light is illuminated.Type: ApplicationFiled: March 26, 2018Publication date: August 2, 2018Applicant: SawStop Holding LLCInventors: Stephen F. Gass, J. David Fulmer, David A. Fanning
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Patent number: 9981326Abstract: Table saws and table saws designed to incorporate safety systems are disclosed. The table saws may include vertical slide elevation mechanisms positioned toward the rear of the saw and constructed so that an arbor block and blade can retract when a safety system detects an unsafe condition. Other table saw parts and components are also disclosed.Type: GrantFiled: August 18, 2009Date of Patent: May 29, 2018Assignee: SawStop Holding LLCInventors: Stephen F. Gass, J. David Fulmer, William L. Emery, Paul H. Stasiewicz
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Publication number: 20180104844Abstract: Blade tilt mechanisms for table saws are disclosed. The disclosed tilt mechanisms provide easy and intuitive operation. They also provide auto-locking so that a user simply releases a component to lock the blade at a specific angle. The tilt mechanisms also provide defined incremental steps for the tilt of the blade and the steps are typically spaced at 1-degree intervals.Type: ApplicationFiled: December 18, 2017Publication date: April 19, 2018Applicant: SawStop Holding LLCInventors: Stephen F. Gass, J. David Fulmer, James F.W. Wright
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Patent number: 9925683Abstract: Table saws with safety systems are disclosed. The safety systems detect and react to dangerous conditions, such as contact between the blade and a person. The table saws may include a switch, a first light that illuminates to indicate the safety system is operable, and a second light that illuminates to indicate that the safety system is inoperable. The switch may not power the saw when switched on if the second light is illuminated.Type: GrantFiled: September 23, 2015Date of Patent: March 27, 2018Assignee: SawStop Holding LLCInventors: Stephen F. Gass, J. David Fulmer, David A. Fanning
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Patent number: 9908189Abstract: Elevation mechanisms for table saws and anti-backdrive mechanisms for use in elevation mechanisms for table saws are disclosed. The anti-backdrive mechanisms typically include three sub-assemblies: an input assembly, an output assembly, and a fixed assembly. The anti-backdrive mechanisms prevent a torque related to the output assembly from changing the blade elevation. For example, the weight of the blade and the structure supporting the blade is prevented from backdriving the elevation mechanism and allowing the blade to drop.Type: GrantFiled: January 30, 2017Date of Patent: March 6, 2018Assignee: SawStop Holding LLCInventors: Stephen F. Gass, James F. W. Wright, J. David Fulmer, Jeffrey D. Weston, Steven D. McDaniel, D. Tate Fanning, Paul H. Stasiewicz
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Patent number: 9878380Abstract: Throat plates for table saws and table saws are disclosed. In some embodiments, the throat plates and/or saws have at least one securement mechanism to secure and prevent inadvertent removal of the throat plate from the throat of the saw. In some embodiments, at least one of the securement mechanisms also provides a height adjustment mechanism and/or prevents vertical removal of the throat plate. In some embodiments, the throat plate has an accessory mounting port that provides a portal for accessories, including safety accessories, to extend through the plate from beneath the table of the saw. In some embodiments, the port extends from the plate's outer perimeter to divide the plate's rear end portion into a pair of spaced-apart members. In some embodiments, these members are independently secured to the table saw and retained apart from each other by one or more of the securement mechanisms.Type: GrantFiled: November 28, 2016Date of Patent: January 30, 2018Assignee: SawStop Holding LLCInventors: Stephen F. Gass, J. David Fulmer, David A. Fanning
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Publication number: 20170368710Abstract: Fences for use in table saws are disclosed. One embodiment may include an actuator, handle or lever to lock and unlock the fence from the table, where the actuator, handle or lever is positioned substantially above the tabletop and substantially within the perimeter of the table (including any rail associated with the table). Another embodiment may include an actuator, handle or lever to lock and unlock the fence from the table, where the actuator, handle or lever is positioned along a top surface of the fence and configured so that the fence unclamps from the saw when the actuator, handle or lever is pressed.Type: ApplicationFiled: September 11, 2017Publication date: December 28, 2017Applicant: SawStop Holding LLCInventors: Jeremy J. Burke, John P. Nenadic, J. David Fulmer, Stephen F. Gass
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Patent number: 9844891Abstract: Blade tilt mechanisms for table saws are disclosed. The disclosed tilt mechanisms provide easy and intuitive operation. They also provide auto-locking so that a user simply releases a component to lock the blade at a specific angle. The tilt mechanisms also provide defined incremental steps for the tilt of the blade and the steps are typically spaced at 1-degree intervals.Type: GrantFiled: July 19, 2013Date of Patent: December 19, 2017Assignee: SawStop Holding LLCInventors: Stephen F. Gass, J. David Fulmer, James F. W. Wright
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Publication number: 20170312837Abstract: Table saws are disclosed. The table saws can include a blade, an arbor, an arbor block, an elevation carriage, and a latch that connects the arbor block and the elevation carriage. The arbor block can have a first position in which the latch connects the arbor block and the elevation carriage, and a second position in which the latch does not connect the arbor block and the elevation carriage. The arbor block can pivot from the first position to the second position upon the occurrence of a retraction force. The table saw can include an actuator to cause the occurrence of the retraction force, and detection electronics to detect contact between the blade and a person. Woodworking machines with detection and reaction systems are also disclosed. A reaction system can include an explosive that causes retraction of a cutting tool.Type: ApplicationFiled: April 17, 2017Publication date: November 2, 2017Applicant: SD3, LLCInventors: Stephen F. Gass, J. David Fulmer, David A. Fanning
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Patent number: 9757871Abstract: Fences for use in table saws are disclosed. One embodiment may include an actuator, handle or lever to lock and unlock the fence from the table, where the actuator, handle or lever is positioned substantially above the tabletop and substantially within the perimeter of the table (including any rail associated with the table). Another embodiment may include an actuator, handle or lever to lock and unlock the fence from the table, where the actuator, handle or lever is positioned along a top surface of the fence and configured so that the fence unclamps from the saw when the actuator, handle or lever is pressed.Type: GrantFiled: October 17, 2014Date of Patent: September 12, 2017Assignee: SD3, LLCInventors: Jeremy J. Burke, John P. Nenadic, Stephen F. Gass, J. David Fulmer
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Publication number: 20170136561Abstract: Elevation mechanisms for table saws and anti-backdrive mechanisms for use in elevation mechanisms for table saws are disclosed. The anti-backdrive mechanisms typically include three sub-assemblies: an input assembly, an output assembly, and a fixed assembly. The anti-backdrive mechanisms prevent a torque related to the output assembly from changing the blade elevation. For example, the weight of the blade and the structure supporting the blade is prevented from backdriving the elevation mechanism and allowing the blade to drop.Type: ApplicationFiled: January 30, 2017Publication date: May 18, 2017Applicant: SD3, LLCInventors: Stephen F. Gass, James F.W. Wright, J. David Fulmer, Jeffrey D. Weston, Steven D. McDaniel, D. Tate Fanning, Paul H. Stasiewicz
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Patent number: 9623498Abstract: Table saws are disclosed. The table saws can include a blade, an arbor, an arbor block, an elevation carriage, and a latch that connects the arbor block and the elevation carriage. The arbor block can have a first position in which the latch connects the arbor block and the elevation carriage, and a second position in which the latch does not connect the arbor block and the elevation carriage. The arbor block can pivot from the first position to the second position upon the occurrence of a retraction force. The table saw can include an actuator to cause the occurrence of the retraction force, and detection electronics to detect contact between the blade and a person. Woodworking machines with detection and reaction systems are also disclosed. A reaction system can include an explosive that causes retraction of a cutting tool.Type: GrantFiled: September 3, 2015Date of Patent: April 18, 2017Assignee: SD3, LLCInventors: Stephen F. Gass, J. David Fulmer, David A. Fanning
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Publication number: 20170072481Abstract: Throat plates for table saws and table saws including the same are disclosed. In some embodiments, the throat plates and/or saws include at least one securement mechanism adapted to secure and prevent inadvertent removal of the throat plate from the throat of the saw. In some embodiments, at least one of the securement mechanisms also provides a height adjustment mechanism and/or prevents vertical removal of the throat plate. In some embodiments, the throat plate includes an accessory mounting port that provides a portal for accessories, including safety accessories, to extend through the plate from beneath the table of the saw. In some embodiments, the port extends from the plate's outer perimeter to divide the plate's rear end portion into a pair of spaced-apart members. In some embodiments, these members are independently secured to the table saw and retained apart from each other by one or more of the securement mechanisms.Type: ApplicationFiled: November 28, 2016Publication date: March 16, 2017Applicant: SD3, LLCInventors: Stephen F. Gass, J. David Fulmer, David A. Fanning
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Patent number: 9555491Abstract: Elevation mechanisms for table saws and anti-backdrive mechanisms for use in elevation mechanisms for table saws are disclosed. The anti-backdrive mechanisms typically include three sub-assemblies: an input assembly, an output assembly, and a fixed assembly. The anti-backdrive mechanisms prevent a torque related to the output assembly from changing the blade elevation. For example, the weight of the blade and the structure supporting the blade is prevented from backdriving the elevation mechanism and allowing the blade to drop.Type: GrantFiled: July 19, 2013Date of Patent: January 31, 2017Assignee: SD3, LLCInventors: Stephen F. Gass, James F. W. Wright, J. David Fulmer, Jeffrey D. Weston, Steven D. McDaniel, D. Tate Fanning, Paul H. Stasiewicz
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Publication number: 20170008189Abstract: Blade tilt mechanisms for table saws are disclosed. The disclosed tilt mechanisms provide easy and intuitive operation. They also provide auto-locking so that a user simply releases a component to lock the blade at a specific angle. The tilt mechanisms also provide defined incremental steps for the tilt of the blade and the steps are typically spaced at 1-degree intervals.Type: ApplicationFiled: July 19, 2013Publication date: January 12, 2017Inventors: Stephen F. Gass, J. David Fulmer, James F.W. Wright
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Publication number: 20160271710Abstract: Elevation mechanisms for table saws and anti-backdrive mechanisms for use in elevation mechanisms for table saws are disclosed. The anti-backdrive mechanisms typically include three sub-assemblies: an input assembly, an output assembly, and a fixed assembly. The anti-backdrive mechanisms prevent a torque related to the output assembly from changing the blade elevation. For example, the weight of the blade and the structure supporting the blade is prevented from backdriving the elevation mechanism and allowing the blade to drop.Type: ApplicationFiled: July 19, 2013Publication date: September 22, 2016Inventors: Stephen F. Gass, James F.W. Wright, J. David Fulmer, Jeffrey D. Weston, Steven D. McDaniel, D. Tate Fanning, Paul H. Stasiewicz
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Publication number: 20160243632Abstract: Table saws and features for table saws are disclosed. Some of the disclosed features are particularly relevant to portable table saws such as jobsite and bench-top table saws. Disclosed features include, but are not limited to, extendable rails, mechanisms to lock rails in position, drawers, compartments and components to store table saw accessories, switch boxes, dust collection systems, table saw housings, tables, and handles.Type: ApplicationFiled: October 30, 2014Publication date: August 25, 2016Applicant: SD3, LLCInventors: J. David Fulmer, John P. Nenadic, Paul H. Stasiewicz, Hollan A. Tsuda, Jeffrey D. Weston
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Publication number: 20160158959Abstract: Table saws and table saws designed to implement safety systems that detect contact between a person and a dangerous portion of the saw are disclosed. Table saw components, mounting systems for table saws, and table saw attachments are also disclosed. One embodiment may include a first clamp surface, a second clamp surface spaced apart from the first clamp surface so that a base portion of a riving knife or splitter can be placed between the clamp surfaces with the opposing sides of the base portion generally parallel to the first and second clamp surfaces.Type: ApplicationFiled: August 12, 2013Publication date: June 9, 2016Inventors: Stephen F. Gass, J. David Fulmer, David A. Fanning