Patents by Inventor William A. Rigdon
William A. Rigdon 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: 20240275243Abstract: A power tool is provided comprising: a motor, an output shaft driven by the motor along a longitudinal axis, a fan rotationally coupled to the motor to generate an airflow, and a housing comprising two calm shells mated together to support the motor and forming a back wall behind the motor along the longitudinal axis. The rear wall includes a plurality of air intakes. An end cap is attached to the housing adjacent the rear wall with an air gap therebetween. The airflow generated by the fan enters through the air gap in a substantially radial direction, then passes through the plurality of air intakes to enter the housing in thermal contact with the motor.Type: ApplicationFiled: April 25, 2024Publication date: August 15, 2024Applicant: Black & Decker Inc.Inventors: Matthew J. Velderman, Andrew E. Seman, JR., Daniel J. White, Paul Becke, William A. Rigdon
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Patent number: 11984771Abstract: A motor assembly is provided including a stator and a rotor. The stator includes a stator main body defining a longitudinal axis, stator teeth projecting radially from the stator main body, stator windings wound around the stator teeth, and two winding terminals provided for each stator tooth extending away from the stator main body substantially parallel to the longitudinal axis. A circuit board is oriented along a radial plane adjacent the stator. The circuit board includes a central through-hole through which a rotor shaft extends, at least one magnetic sensor mounted on a surface of the circuit board around the central through-hole configured to magnetically interface with the rotor, peripheral openings arranged to receive the winding terminals of the stator, and conductive routings extending from the peripheral openings to connect the stator windings in a series or a parallel configuration and/or a wye or a delta configuration.Type: GrantFiled: August 25, 2021Date of Patent: May 14, 2024Assignee: Black & Decker Inc.Inventors: Matthew J. Velderman, Andrew E. Seman, Jr., Daniel J. White, Paul Becke, William A. Rigdon
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Publication number: 20230238910Abstract: A battery-powered motor may include an electric motor, a controller, and a housing. The electric motor may be wound to enable the battery-powered motor to achieve a non-limited motor maximum motor revolutions per minute (RPM) for at least one specified battery. The controlling current may include limiting current to the electric motor at lower RPMs, and limiting the current to prevent the RPM of the electric motor from exceeding a limited maximum motor RPM which is lower than the non-limited motor maximum RPM. The housing may enclose the electric motor and the controller and the specified battery. The housing may have a form factor to engage with a machine that engages with an internal combustion engine that has a maximum engine RPM that is approximately the same as the limited maximum motor RPM.Type: ApplicationFiled: February 27, 2023Publication date: July 27, 2023Inventors: Daniel J. WHITE, Matthew J. VELDERMAN, Andrew E. SEMAN, JR., Ryan H. PELOQUIN, William A. RIGDON, Harry X. ZHONG
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Patent number: 11621662Abstract: A battery-powered motor may include an electric motor, a controller, and a housing. The electric motor may be wound to enable the battery-powered motor to achieve a non-limited motor maximum motor revolutions per minute (RPM) for at least one specified battery. The controlling current may include limiting current to the electric motor at lower RPMs, and limiting the current to prevent the RPM of the electric motor from exceeding a limited maximum motor RPM which is lower than the non-limited motor maximum RPM. The housing may enclose the electric motor and the controller and the specified battery. The housing may have a form factor to engage with a machine that engages with an internal combustion engine that has a maximum engine RPM that is approximately the same as the limited maximum motor RPM.Type: GrantFiled: April 5, 2019Date of Patent: April 4, 2023Assignee: Black & Decker Inc.Inventors: Daniel J. White, Matthew J. Velderman, Andrew E. Seman, Jr., Ryan H. Peloquin, William A. Rigdon, Harry X. Zhong
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Publication number: 20220077750Abstract: A motor assembly is provided including a stator and a rotor. The stator includes a stator main body defining a longitudinal axis, stator teeth projecting radially from the stator main body, stator windings wound around the stator teeth, and two winding terminals provided for each stator tooth extending away from the stator main body substantially parallel to the longitudinal axis. A circuit board is oriented along a radial plane adjacent the stator. The circuit board includes a central through-hole through which a rotor shaft extends, at least one magnetic sensor mounted on a surface of the circuit board around the central through-hole configured to magnetically interface with the rotor, peripheral openings arranged to receive the winding terminals of the stator, and conductive routings extending from the peripheral openings to connect the stator windings in a series or a parallel configuration and/or a wye or a delta configuration.Type: ApplicationFiled: August 25, 2021Publication date: March 10, 2022Inventors: Matthew J. Velderman, Andrew E. Seman, JR., Daniel J. White, Paul Becke, William A. Rigdon
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Patent number: 11139722Abstract: A motor assembly is provided with a stator including a lamination stack forming a stator core, stator teeth inwardly projecting from the stator core, and stator windings wound around the stator teeth in connected in phases. A rotor is rotatably disposed within the stator with a shaft, a rotor lamination stack mounted on the shaft, and at least one bearing mounted on the shaft. An external heat sink is provided including a main body defining a hollow opening form-fittingly receiving the stator therein in thermal communication with the stator. A bearing support structure is provided having a main body radially arranged and secured the main body of the external heat sink, the bearing support structure forming a central bearing pocket arranged to receive and support the bearing of the rotor therein to axially and radially support the rotor with respect to the heat sink.Type: GrantFiled: February 21, 2019Date of Patent: October 5, 2021Assignee: Black & Decker Inc.Inventors: Matthew J. Velderman, Andrew E. Seman, Jr., Daniel J. White, Paul Becke, William A. Rigdon
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Patent number: 10587125Abstract: A system includes a charger having one or more receptacles for charging one or more removable battery packs, where the charger is capable of being electrically coupled to an electrical bus of a prime mover. The charger is capable of operating in multiple different charging modes. The charger is capable of discharging energy from the removable battery packs to the electrical bus to charge one or more components electrically coupled to the electrical bus and/or drawing energy from the electrical bus to charge one or more of the removable battery packs.Type: GrantFiled: October 26, 2017Date of Patent: March 10, 2020Assignee: Black & Decker Inc.Inventors: Elyse Edwards, Matthew J. Velderman, William A. Rigdon, Andrew E. Seman, Jr., Daniel J. White
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Publication number: 20190273421Abstract: A motor assembly is provided with a stator including a lamination stack forming a stator core, stator teeth inwardly projecting from the stator core, and stator windings wound around the stator teeth in connected in phases. A rotor is rotatably disposed within the stator with a shaft, a rotor lamination stack mounted on the shaft, and at least one bearing mounted on the shaft. An external heat sink is provided including a main body defining a hollow opening form-fittingly receiving the stator therein in thermal communication with the stator. A bearing support structure is provided having a main body radially arranged and secured the main body of the external heat sink, the bearing support structure forming a central bearing pocket arranged to receive and support the bearing of the rotor therein to axially and radially support the rotor with respect to the heat sink.Type: ApplicationFiled: February 21, 2019Publication date: September 5, 2019Inventors: Matthew J. Velderman, Andrew E. Seman, JR., Daniel J. White, Paul Becke, II, William A. Rigdon
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Publication number: 20190238083Abstract: A battery-powered motor may include an electric motor, a controller, and a housing. The electric motor may be wound to enable the battery-powered motor to achieve a non-limited motor maximum motor revolutions per minute (RPM) for at least one specified battery. The controlling current may include limiting current to the electric motor at lower RPMs, and limiting the current to prevent the RPM of the electric motor from exceeding a limited maximum motor RPM which is lower than the non-limited motor maximum RPM. The housing may enclose the electric motor and the controller and the specified battery. The housing may have a form factor to engage with a machine that engages with an internal combustion engine that has a maximum engine RPM that is approximately the same as the limited maximum motor RPM.Type: ApplicationFiled: April 5, 2019Publication date: August 1, 2019Inventors: Daniel J. WHITE, Matthew J. VELDERMAN, Andrew E. SEMAN, JR., Ryan H. PELOQUIN, William A. RIGDON, Harry X. ZHONG
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Publication number: 20190229580Abstract: A battery pack charger system includes a charger having one or more receptacles for charging one or more removable battery packs, where the charger is capable of being mounted to a rotating component of an engine. The battery pack charger system includes an alternator that is electrically coupled to the charger and that is mechanically coupled to the rotating component of the engine to generate and provide electrical power to the charger. An adapter bracket is mechanically coupled to the charger and the adapter bracket is configured to receive the alternator and to mechanically couple the alternator to the rotating component of the engine.Type: ApplicationFiled: April 3, 2019Publication date: July 25, 2019Inventors: Elyse EDWARDS, Matthew J. VELDERMAN, William A. RIGDON, Andrew E. SEMAN, Daniel J. WHITE
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Publication number: 20180115169Abstract: A system includes a charger having one or more receptacles for charging one or more removable battery packs, where the charger is capable of being electrically coupled to an electrical bus of a prime mover. The charger is capable of operating in multiple different charging modes. The charger is capable of discharging energy from the removable battery packs to the electrical bus to charge one or more components electrically coupled to the electrical bus and/or drawing energy from the electrical bus to charge one or more of the removable battery packs.Type: ApplicationFiled: October 26, 2017Publication date: April 26, 2018Inventors: Elyse Edwards, Matthew J. Velderman, William A. Rigdon, Andrew E. Seman, Jr., Daniel J. White