Patents by Inventor Jeffery D. SPRAGGON
Jeffery D. SPRAGGON 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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Publication number: 20240123560Abstract: A handheld power tool includes a housing, a tool receptacle disposed on a first end of the housing and configured to receive a tool accessory, a motor positioned within the housing and operatively coupled to the tool receptacle to drive the tool accessory, and a dust collection assembly integrated within the housing. The dust collection assembly includes a fan disposed within the housing and operatively coupled to the motor. The fan is configured to generate a suction airflow due to rotation of the motor, and a dust container removably coupled to the housing of the power tool. The dust container is configured to collect dust and other debris generated by the tool accessory during operation of the handheld power tool.Type: ApplicationFiled: December 27, 2023Publication date: April 18, 2024Inventors: Julia C. Marsh, John Bloom-Edmonds, Jeffery D. Spraggon, Andrew Delmar Van Hoorn, Allen H. Johnson, III, Amedee Brennan O’Gorman
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Publication number: 20240033871Abstract: A rotary hammer includes a motor and a spindle coupled to the motor for receiving torque from the motor. The spindle has an adjustable rotation speed. A reciprocation mechanism is operable to create a variable pressure air spring within the spindle and includes a piston configured to reciprocate within the spindle in response to receiving torque from the motor. The piston has an adjustable reciprocation frequency. A striker is selectively reciprocable within the spindle in response to reciprocation of the piston. A first transmission is transfers torque from the motor to the spindle and a second transmission is transfers torque from the motor to the reciprocation mechanism. The reciprocation frequency of the piston is adjustable independent of the rotation speed of the spindle. The rotation speed of the spindle is adjustable independent of the reciprocation frequency of the piston. At least one of the transmissions is a multi-speed transmission.Type: ApplicationFiled: October 9, 2023Publication date: February 1, 2024Inventors: Kyle Greunke, Andrew D. Van Hoorn, Kevin A. McLachlan, Julia C. Marsh, Mauricio Builes Zapata, Daryl S. Richards, Beth E. Cholst, Jeffery D. Spraggon
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Patent number: 11872665Abstract: A handheld power tool including a housing, a tool receptacle disposed on a first end of the housing and configured to receive a tool accessory, and a motor positioned within the housing and operatively coupled to the tool receptacle to drive the tool accessory. A dust container is selectively coupled to the housing. A dust tube is coupled to the first end of the housing and in fluid communication with the dust container, wherein the dust tube is movable between an extended position and a retracted position. A fan is positioned within the housing and is operable to generate a suction air flow path through the dust tube and into the dust container, wherein the fan rotatably driven by the motor.Type: GrantFiled: April 1, 2022Date of Patent: January 16, 2024Assignee: MILWAUKEE ELECTRIC TOOL CORPORATIONInventors: Julia C. Marsh, John Bloom-Edmonds, Jeffery D. Spraggon, Andrew Delmar Van Hoorn, Allen H. Johnson, III, Amedee Brennan O'Gorman
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Publication number: 20230415327Abstract: A handheld power tool including a housing, a tool receptacle disposed on a first end of the housing and configured to receive a tool accessory, and a motor positioned within the housing and operatively coupled to the tool receptacle to drive the tool accessory. A dust container is selectively coupled to the housing. A dust tube is coupled to the first end of the housing and in fluid communication with the dust container, wherein the dust tube is movable between an extended position and a retracted position. A fan is positioned within the housing and is operable to generate a suction air flow path through the dust tube and into the dust container, wherein the fan rotatably driven by the motor.Type: ApplicationFiled: June 26, 2023Publication date: December 28, 2023Inventors: Julia C. Marsh, John Bloom-Edmonds, Jeffery D. Spraggon, Andrew Delmar Van Hoorn, Allen H. Johnson, III, Amedee Brennan O’Gorman
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Patent number: 11819968Abstract: A rotary hammer includes a housing, a first motor supported by the housing and defining a first motor axis, a second motor supported by the housing and defining a second motor axis that is coaxial with the first motor axis, and a spindle coupled to the first motor for receiving torque from the first motor, causing the spindle to rotate. The rotary hammer further includes a reciprocation mechanism operable to create a variable pressure air spring within the spindle. The reciprocation mechanism includes a piston configured to reciprocate within the spindle in response to receiving torque from the second motor, a striker that is selectively reciprocable within the spindle in response to reciprocation of the piston, and an anvil that is impacted by the striker when the striker reciprocates towards the tool bit. The anvil imparts axial impacts to the tool bit.Type: GrantFiled: January 19, 2022Date of Patent: November 21, 2023Assignee: MILWAUKEE ELECTRIC TOOL CORPORATIONInventors: Kyle Greunke, Andrew D. Van Hoorn, Kevin A. McLachlan, Julia C. Marsh, Mauricio Builes Zapata, Daryl S. Richards, Beth E. Cholst, Jeffery D. Spraggon
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Publication number: 20230321806Abstract: A rotary hammer operable in a first mode in which only a hammering operation to reciprocate a tool bit along a drive axis is performed and a second mode in which the tool bit is rotationally driven about the drive axis. The rotary hammer includes a motor, a controller to control operation of the motor, a trigger moveable between an off position and an on position, a mode selection dial operable to select the first or second mode, a lock mechanism moveable between a first position and a second position, a linkage moveable between a third position and a fourth position, and a switch in communication with the controller. The switch communicates with the controller to operate the motor at full power or communicates with the controller to operate the motor at a variable speed based on the position of the trigger between the on position and the off position.Type: ApplicationFiled: April 7, 2023Publication date: October 12, 2023Inventors: Kevin A. McLachlan, Jonathan J. Christian, Spencer D. Stingl, Andrew D. Van Hoorn, Julia C. Marsh, Jeffery D. Spraggon, Alan J. Rehfeldt
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Publication number: 20220314384Abstract: A handheld power tool including a housing, a tool receptacle disposed on a first end of the housing and configured to receive a tool accessory, and a motor positioned within the housing and operatively coupled to the tool receptacle to drive the tool accessory. A dust container is selectively coupled to the housing. A dust tube is coupled to the first end of the housing and in fluid communication with the dust container, wherein the dust tube is movable between an extended position and a retracted position. A fan is positioned within the housing and is operable to generate a suction air flow path through the dust tube and into the dust container, wherein the fan rotatably driven by the motor.Type: ApplicationFiled: April 1, 2022Publication date: October 6, 2022Inventors: Julia C. Marsh, John Bloom-Edmonds, Jeffery D. Spraggon, Andrew Delmar Van Hoorn, Allen H. Johnson, III, Amedee Brennan O'Gorman
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Publication number: 20220226951Abstract: A rotary hammer includes a housing, a first motor supported by the housing and defining a first motor axis, a second motor supported by the housing and defining a second motor axis that is coaxial with the first motor axis, and a spindle coupled to the first motor for receiving torque from the first motor, causing the spindle to rotate. The rotary hammer further includes a reciprocation mechanism operable to create a variable pressure air spring within the spindle. The reciprocation mechanism includes a piston configured to reciprocate within the spindle in response to receiving torque from the second motor, a striker that is selectively reciprocable within the spindle in response to reciprocation of the piston, and an anvil that is impacted by the striker when the striker reciprocates towards the tool bit. The anvil imparts axial impacts to the tool bit.Type: ApplicationFiled: January 19, 2022Publication date: July 21, 2022Inventors: Kyle Greunke, Andrew D. Van Hoorn, Kevin A. McLachlan, Julia C. Marsh, Mauricio Builes Zapata, Daryl S. Richards, Beth E. Cholst, Jeffery D. Spraggon
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Publication number: 20210237306Abstract: The present invention provides, in one aspect, a router including a motor unit and a base configured to selectively receive the motor unit to support the router on a work piece surface. The motor unit includes a motor and a spindle configured to output a torque supplied by the motor. The base includes an input shaft configured to selectively couple to the spindle, an output shaft laterally offset from the input shaft, and a belt. The input shaft includes a first pulley and the output shaft includes a second pulley and a tool holder. The belt wraps around the first and second pulleys to rotationally couple the input shaft to the output shaft. When the motor unit is received into the base, the spindle couples to the input shaft.Type: ApplicationFiled: May 14, 2020Publication date: August 5, 2021Inventors: Tyler S. SIGAFOOSE, Jeffery D. SPRAGGON, Andrew D. VAN HOORN, Zhenxin DONG, Ye WANG