Patents by Inventor Stephen F. Gass

Stephen F. Gass 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).

  • Patent number: 9969014
    Abstract: Woodworking machines and safety methods for use with those machines are disclosed. The machines include a detection system adapted to detect one or more dangerous conditions and a reaction system associated with the detection system. The reaction system can include an explosive to trigger the system, and also can be configured to retract a cutting tool at least partially away from a cutting region upon detection of a dangerous condition by the detection system.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: May 15, 2018
    Assignee: SawStop Holding LLC
    Inventor: Stephen F. Gass
  • Publication number: 20180104844
    Abstract: 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: Application
    Filed: December 18, 2017
    Publication date: April 19, 2018
    Applicant: SawStop Holding LLC
    Inventors: Stephen F. Gass, J. David Fulmer, James F.W. Wright
  • Patent number: 9925683
    Abstract: 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: Grant
    Filed: September 23, 2015
    Date of Patent: March 27, 2018
    Assignee: SawStop Holding LLC
    Inventors: Stephen F. Gass, J. David Fulmer, David A. Fanning
  • Patent number: 9927796
    Abstract: A band saw including a frame, at least two, spaced apart, rotatable wheels supported by the frame, a blade looped around the wheels, where rotation of at least one wheel causes the blade to move around the wheels, a detection system adapted to detect a dangerous condition between a person and the blade, and a reaction system configured to engage and stop the blade within 10 milliseconds after detection of the dangerous condition is disclosed. The reaction system may be configured to cut and grip the blade.
    Type: Grant
    Filed: May 15, 2002
    Date of Patent: March 27, 2018
    Assignee: SawStop Holding LLC
    Inventor: Stephen F. Gass
  • Patent number: 9919369
    Abstract: Inserts for use in table saws are disclosed. One embodiment may include a mechanism to lock mechanically and affirmatively the insert in a blade opening in a table saw. The mechanism is designed so that a user can install and remove the insert without tools. The mechanism also can be designed so that the front of the insert pops up above the table when released from its locked position. The mechanism can be further designed so that the insert can be unlocked or released by a user pressing a button or tab.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: March 20, 2018
    Assignee: SawStop Holding LLC
    Inventors: Stephen F. Gass, James F.W. Wright
  • Patent number: 9908189
    Abstract: 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: Grant
    Filed: January 30, 2017
    Date of Patent: March 6, 2018
    Assignee: SawStop Holding LLC
    Inventors: Stephen F. Gass, James F. W. Wright, J. David Fulmer, Jeffrey D. Weston, Steven D. McDaniel, D. Tate Fanning, Paul H. Stasiewicz
  • Patent number: 9878380
    Abstract: 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: Grant
    Filed: November 28, 2016
    Date of Patent: January 30, 2018
    Assignee: SawStop Holding LLC
    Inventors: Stephen F. Gass, J. David Fulmer, David A. Fanning
  • Publication number: 20170368710
    Abstract: 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: Application
    Filed: September 11, 2017
    Publication date: December 28, 2017
    Applicant: SawStop Holding LLC
    Inventors: Jeremy J. Burke, John P. Nenadic, J. David Fulmer, Stephen F. Gass
  • Patent number: 9844891
    Abstract: 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: Grant
    Filed: July 19, 2013
    Date of Patent: December 19, 2017
    Assignee: SawStop Holding LLC
    Inventors: Stephen F. Gass, J. David Fulmer, James F. W. Wright
  • Publication number: 20170334087
    Abstract: Machines with safety systems are disclosed. The machine may take the form of woodworking machines including table saws, band saws, miter saws, hand-held circular saws, pneumatic chop saws, radial-arm saws, jointers, planars, routers and shapers. The machines may include an operative structure configured to perform a task, where the operative structure includes a cutting tool adapted to move in at least one motion, and a safety system adapted to detect the occurrence of an unsafe condition between a person and the cutting tool and for mitigating the unsafe condition. The safety system may include a detection subsystem and a reaction subsystem. The machine may also include a bypass or override mode where in an injury mitigation system is disabled for certain cuts.
    Type: Application
    Filed: August 7, 2017
    Publication date: November 23, 2017
    Applicant: SawStop Holding LLC
    Inventor: Stephen F. Gass
  • Publication number: 20170312837
    Abstract: 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: Application
    Filed: April 17, 2017
    Publication date: November 2, 2017
    Applicant: SD3, LLC
    Inventors: Stephen F. Gass, J. David Fulmer, David A. Fanning
  • Patent number: 9757871
    Abstract: 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: Grant
    Filed: October 17, 2014
    Date of Patent: September 12, 2017
    Assignee: SD3, LLC
    Inventors: Jeremy J. Burke, John P. Nenadic, Stephen F. Gass, J. David Fulmer
  • Patent number: 9724840
    Abstract: Machines with safety systems are disclosed. The machine may take the form of woodworking machines including table saws, band saws, miter saws, hand-held circular saws, pneumatic chop saws, radial-arm saws, jointers, planars, routers and shapers. The machines may include an operative structure configured to perform a task, where the operative structure includes a cutting tool adapted to move in at least one motion, and a safety system adapted to detect the occurrence of an unsafe condition between a person and the cutting tool and for mitigating the unsafe condition. The safety system may include a detection subsystem and a reaction subsystem.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: August 8, 2017
    Assignee: SD3, LLC
    Inventor: Stephen F. Gass
  • Publication number: 20170190012
    Abstract: Woodworking machines and safety methods for use with those machines are disclosed. The machines include a detection system adapted to detect one or more dangerous conditions and a reaction system associated with the detection system. The reaction system can include an explosive to trigger the system, and also can be configured to retract a cutting tool at least partially away from a cutting region upon detection of a dangerous condition by the detection system.
    Type: Application
    Filed: April 1, 2013
    Publication date: July 6, 2017
    Inventor: Stephen F. Gass
  • Publication number: 20170136561
    Abstract: 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: Application
    Filed: January 30, 2017
    Publication date: May 18, 2017
    Applicant: SD3, LLC
    Inventors: Stephen F. Gass, James F.W. Wright, J. David Fulmer, Jeffrey D. Weston, Steven D. McDaniel, D. Tate Fanning, Paul H. Stasiewicz
  • Patent number: 9623498
    Abstract: 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: Grant
    Filed: September 3, 2015
    Date of Patent: April 18, 2017
    Assignee: SD3, LLC
    Inventors: Stephen F. Gass, J. David Fulmer, David A. Fanning
  • Publication number: 20170072481
    Abstract: 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: Application
    Filed: November 28, 2016
    Publication date: March 16, 2017
    Applicant: SD3, LLC
    Inventors: Stephen F. Gass, J. David Fulmer, David A. Fanning
  • Publication number: 20170072582
    Abstract: Woodworking machines and safety methods for use with those machines are disclosed. The machines include a detection system adapted to detect one or more dangerous conditions and a reaction system associated with the detection system. The reaction system can include an explosive to trigger the system, and also can be configured to retract a cutting tool at least partially away from a cutting region upon detection of a dangerous condition by the detection system.
    Type: Application
    Filed: November 21, 2016
    Publication date: March 16, 2017
    Applicant: SD3, LLC
    Inventor: Stephen F. Gass
  • Patent number: 9555491
    Abstract: 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: Grant
    Filed: July 19, 2013
    Date of Patent: January 31, 2017
    Assignee: SD3, LLC
    Inventors: Stephen F. Gass, James F. W. Wright, J. David Fulmer, Jeffrey D. Weston, Steven D. McDaniel, D. Tate Fanning, Paul H. Stasiewicz
  • Publication number: 20170008189
    Abstract: 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: Application
    Filed: July 19, 2013
    Publication date: January 12, 2017
    Inventors: Stephen F. Gass, J. David Fulmer, James F.W. Wright