Patents by Inventor Scott J. Eshleman
Scott J. Eshleman 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: 11173584Abstract: A power tool is provided including a brushless DC (BLDC) motor, a rectifier that receives an alternative current from a power supply and outputs a rectified signal supplied to a DC power bus, and an inverter circuit having motor switches connected electrically between the DC power bus and the motor. A control module controls a switching operation of the power switches to regulate supply power from the power supply to the motor. The control module controls the switching operation so as to, within a half cycle of the AC power supply voltage waveform, increase current draw from the power supply from a first threshold at or after a first zero-crossing of the half cycle up to a second threshold, and reduce current draw from the power supply from the second threshold up to a third threshold at or prior to a second zero-crossing of the half cycle.Type: GrantFiled: June 27, 2019Date of Patent: November 16, 2021Assignee: Black & Decker Inc.Inventors: Alexander Manasseh, Scott J. Eshleman, Robert A. Usselman, John D. Cox
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Patent number: 10992207Abstract: A power tool has a housing, a motor disposed within the housing, a power supply circuit for providing power to the motor, a controller circuit for controlling the power provided to the motor, and an electric static discharge (ESD) protection circuit connected to the power supply circuit and the housing. The ESD protection circuit includes a first resistor connected to the power supply circuit and the housing. The first resistor may be a high impedance resistor. The ESD protection circuit may also have a first capacitor connected in parallel to the first resistor, a second resistor connected in series to the first resistor, and a second capacitor connected in series to the first capacitor and in parallel to the second resistor.Type: GrantFiled: June 10, 2019Date of Patent: April 27, 2021Assignee: BLACK & DECKER INC.Inventors: Scott J. Eshleman, Shailesh P. Waikar, Ganapati K. Pai, Joseph Narbut
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Patent number: 10710220Abstract: A power tool is provided including a brushless DC (BLDC) motor, a rectifier that receives an alternative current from a power supply and outputs a rectified signal supplied to a DC power bus, and an inverter circuit having motor switches connected electrically between the DC power bus and the motor. A control module controls a switching operation of the power switches to regulate supply power from the power supply to the motor. The control module controls the switching operation so as to, within a half cycle of the AC power supply voltage waveform, increase current draw from the power supply from a first threshold at or after a first zero-crossing of the half cycle up to a second threshold, and reduce current draw from the power supply from the second threshold up to a third threshold at or prior to a second zero-crossing of the half cycle.Type: GrantFiled: April 7, 2017Date of Patent: July 14, 2020Assignee: Black & Decker Inc.Inventors: Alexander Manasseh, Scott J. Eshleman, Robert A. Usselman, John D. Cox
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Publication number: 20190393761Abstract: A power tool has a housing, a motor disposed within the housing, a power supply circuit for providing power to the motor, a controller circuit for controlling the power provided to the motor, and an electric static discharge (ESD) protection circuit connected to the power supply circuit and the housing. The ESD protection circuit includes a first resistor connected to the power supply circuit and the housing. The first resistor may be a high impedance resistor. The ESD protection circuit may also have a first capacitor connected in parallel to the first resistor, a second resistor connected in series to the first resistor, and a second capacitor connected in series to the first capacitor and in parallel to the second resistor.Type: ApplicationFiled: June 10, 2019Publication date: December 26, 2019Inventors: Scott J. Eshleman, Shailesh P. Waikar, Ganapati K. Pai, Joseph Narbut
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Patent number: 10469006Abstract: A power adapter for use with a power tool having an electric motor, and configured to supply electric power from an alternating current power supply to the power tool, is provided. The adapter includes a housing and an auxiliary capacitor circuit housed within the housing. The auxiliary capacitor circuit includes an auxiliary capacitor, a switch in series with the auxiliary capacitor, and a switch control circuit. A state of the switch creates either a charging path for the auxiliary capacitor or both the charging path and a discharging path for the auxiliary capacitor, and the switch control circuit is configured to detect voltage associated with the power supply or the power tool and to control state of the switch in accordance with magnitude of the detected voltage.Type: GrantFiled: July 12, 2018Date of Patent: November 5, 2019Assignee: Black & Decker Inc.Inventors: Pradeep M. Pant, Michael K. Forster, Scott J. Eshleman, Samuel G. Woods, Timothy J. Seeley, Mark T. Cherry
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Publication number: 20190314961Abstract: A power tool is provided including a brushless DC (BLDC) motor, a rectifier that receives an alternative current from a power supply and outputs a rectified signal supplied to a DC power bus, and an inverter circuit having motor switches connected electrically between the DC power bus and the motor. A control module controls a switching operation of the power switches to regulate supply power from the power supply to the motor. The control module controls the switching operation so as to, within a half cycle of the AC power supply voltage waveform, increase current draw from the power supply from a first threshold at or after a first zero-crossing of the half cycle up to a second threshold, and reduce current draw from the power supply from the second threshold up to a third threshold at or prior to a second zero-crossing of the half cycle.Type: ApplicationFiled: June 27, 2019Publication date: October 17, 2019Applicant: Black & Decker Inc.Inventors: Alexander Manasseh, Scott J. Eshleman, Robert A. Usselman, John D. Cox
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Patent number: 10199856Abstract: A power tool system includes a power tool, a power tool battery pack and a battery pack charger. The power tool battery pack is separable from and attachable to the power tool, and electrically connectable to the power tool electrical terminals when attached to the power tool. The power tool battery pack has at least one battery cell, a receiver coil, and a control circuit for controlling the amount of power that is provided to the at least one battery cell. The battery pack charger has at least one transmitter coil for generating a magnetic field which induces a voltage in the receiver coil, and a control circuit for controlling the amount of power that is provided to the transmitter coil.Type: GrantFiled: July 21, 2017Date of Patent: February 5, 2019Assignee: BLACK & DECKER INC.Inventors: Jeremy D. Ashinghurst, Rouse Roby Bailey, Jason F. Busschaert, Scott J. Eshleman, Sankarshan Murthy, Christine H. Potter, Daniel Puzio, Craig A. Schell
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Patent number: 10177691Abstract: A power tool is provided including a brushless direct-current (BLDC) electric motor having a stator and a rotor. The power tool includes power switches including high-side switches and low-side switches disposed on a direct-current (DC) bus line between a power supply and the electric motor, and a controller configured to electronically brake the motor by simultaneously closing the high-side switches or the low-side switches to electrically short the stator windings. In an embodiment, the controller is configured to monitor a voltage of the DC bus line, and if the voltage of the DC bus line is lower than a voltage threshold, execute electronic braking by toggling between closing the high-side switches and closing the low-side switches over braking cycles, and if the voltage of the DC bus line is greater than the voltage threshold, execute braking by closing only the high-side switches or the low-side switches over the braking cycles.Type: GrantFiled: June 29, 2017Date of Patent: January 8, 2019Assignee: Black & Decker Inc.Inventors: Scott J. Eshleman, Tal Gottesman
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Patent number: 10160049Abstract: A power tool includes a housing, a motor, an output member driven by the motor, and a reaming attachment coupled to the output member. The reaming attachment has a front end portion selectively driven in rotation by the output member to drive a fastener into a workpiece, and a reaming portion selectively driven in rotation by the output member to remove material from an end surface of a conduit. A rotational motion sensor in the housing is operable to detect rotational motion of the housing about an axis. A controller receives a signal indicative of rotational motion from the sensor, determines a direction of the rotational motion of the housing, and drives the motor in a direction corresponding to the direction of rotational motion of the housing.Type: GrantFiled: November 19, 2015Date of Patent: December 25, 2018Assignee: BLACK & DECKER INC.Inventors: Scott J. Eshleman, Craig A. Schell, Andrew E. Seman, Jr., Daniel Puzio, Daniele C. Brotto, Joseph P. Kelleher, James B. Watson, James R. Parks, Clark A. Bixler
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Patent number: 10158301Abstract: A power tool is provided, including a housing; a brushless DC (BLDC) motor arranged within the housing, the motor including a stator and a rotor rotatably disposed within the stator; a power module electrically disposed between the motor and a power supply, the power module including power switches; an actuator engageable by a user; and a control module configured to control a switching operation of the power switches to begin supply power to the motor when the actuator is engaged. The control module monitors engagement and disengagement events of the actuator, and ignores a subsequent engagement of the actuator if at least one of number of actuator engagement events and/or number of actuator disengagement events exceeds a predetermined threshold value within a predetermined time.Type: GrantFiled: February 14, 2017Date of Patent: December 18, 2018Assignee: Black & Decker Inc.Inventors: Alexander Manasseh, Mark T. Cherry, Wing W. Lin, Samuel G. Woods, Scott J. Eshleman, Tal Gottesman, Timothy J. Seeley
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Publication number: 20180323734Abstract: A power adapter for use with a power tool having an electric motor, and configured to supply electric power from an alternating current power supply to the power tool, is provided. The adapter includes a housing and an auxiliary capacitor circuit housed within the housing. The auxiliary capacitor circuit includes an auxiliary capacitor, a switch in series with the auxiliary capacitor, and a switch control circuit. A state of the switch creates either a charging path for the auxiliary capacitor or both the charging path and a discharging path for the auxiliary capacitor, and the switch control circuit is configured to detect voltage associated with the power supply or the power tool and to control state of the switch in accordance with magnitude of the detected voltage.Type: ApplicationFiled: July 12, 2018Publication date: November 8, 2018Applicant: Black & Decker Inc.Inventors: Pradeep M. Pant, Michael K. Forster, Scott J. Eshleman, Samuel G. Woods, Timothy J. Seeley, Mark T. Cherry
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Publication number: 20180290270Abstract: A power tool is provided including a brushless DC (BLDC) motor, a rectifier that receives an alternative current from a power supply and outputs a rectified signal supplied to a DC power bus, and an inverter circuit having motor switches connected electrically between the DC power bus and the motor. A control module controls a switching operation of the power switches to regulate supply power from the power supply to the motor. The control module controls the switching operation so as to, within a half cycle of the AC power supply voltage waveform, increase current draw from the power supply from a first threshold at or after a first zero-crossing of the half cycle up to a second threshold, and reduce current draw from the power supply from the second threshold up to a third threshold at or prior to a second zero-crossing of the half cycle.Type: ApplicationFiled: April 7, 2017Publication date: October 11, 2018Applicant: Black & Decker Inc.Inventors: Alexander Manasseh, Scott J. Eshleman, Robert A. Usselman, John D. Cox
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Publication number: 20180241240Abstract: A power tool system includes a power tool, a power tool battery pack and a battery pack charger. The power tool battery pack is separable from and attachable to the power tool, and electrically connectable to the power tool electrical terminals when attached to the power tool. The power tool battery pack has at least one battery cell, a receiver coil, and a control circuit for controlling the amount of power that is provided to the at least one battery cell. The battery pack charger has at least, one transmitter coil for generating a magnetic field which induces a voltage in the receiver coil, and a control circuit for controlling the amount of power that is provided to the transmitter coil.Type: ApplicationFiled: March 8, 2018Publication date: August 23, 2018Inventors: Jeremy D. Ashinghurst, Rouse Roby Bailey, JR., Jason F. Busschaert, Scott J. Eshleman, Sankarshan Murthy, Christine H. Potter, Daniel Puzio, Craig A. Schell
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Publication number: 20180234034Abstract: A power tool is provided, including a housing; a brushless DC (BLDC) motor arranged within the housing, the motor including a stator and a rotor rotatably disposed within the stator; a power module electrically disposed between the motor and a power supply, the power module including power switches; an actuator engageable by a user; and a control module configured to control a switching operation of the power switches to begin supply power to the motor when the actuator is engaged. The control module monitors engagement and disengagement events of the actuator, and ignores a subsequent engagement of the actuator if at least one of number of actuator engagement events and/or number of actuator disengagement events exceeds a predetermined threshold value within a predetermined time.Type: ApplicationFiled: February 14, 2017Publication date: August 16, 2018Inventors: Alexander MANASSEH, Mark T. CHERRY, Wing W. LIN, Samuel G. WOODS, Scott J. ESHLEMAN, Tal GOTTESMAN, Timothy J. SEELEY
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Patent number: 10050572Abstract: A power tool is configured to receive power from a power supply. The power tool may include a rectifier that may output a rectified signal to a DC power bus. A switching arrangement may operate to deliver electric power from the DC power bus to an electric motor. A switch path may be electrically coupled in parallel with the rectifier on the DC power bus. The switch path includes an auxiliary capacitor in series with a switch and a state of the switch controls a discharging path for the auxiliary capacitor. A switch control circuit may be configured to detect voltage associated with at least one of the AC power supply or the DC power bus and to control state of the switch in accordance with magnitude of the detected voltage.Type: GrantFiled: June 15, 2017Date of Patent: August 14, 2018Assignee: Black & Decker Inc.Inventors: Pradeep M. Pant, Michael K. Forster, Scott J. Eshleman, Samuel G. Woods, Timothy J. Seeley, Mark T. Cherry
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Publication number: 20180115183Abstract: A power tool system includes a power tool, a power tool battery pack and a battery pack charger. The power tool battery pack is separable from and attachable to the power tool, and electrically connectable to the power tool electrical terminals when attached to the power tool. The power tool battery pack has at least one battery cell, a receiver coil, and a control circuit for controlling the amount of power that is provided to the at least one battery cell. The battery pack charger has at least one transmitter coil for generating a magnetic field which induces a voltage in the receiver coil, and a control circuit for controlling the amount of power that is provided to the transmitter coil.Type: ApplicationFiled: July 21, 2017Publication date: April 26, 2018Inventors: Jeremy D. Ashinghurst, Rouse Roby Bailey, Jason F. Busschaert, Scott J. Eshleman, Sankarshan Murthy, Christine H. Potter, Daniel Puzio, Craig A. Schell
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Patent number: 9948128Abstract: A power tool system includes a power tool, a power tool battery pack and a battery pack charger. The power tool battery pack is separable from and attachable to the power tool, and electrically connectable to the power tool electrical terminals when attached to the power tool. The power tool battery pack has at least one battery cell, a receiver coil, and a control circuit for controlling the amount of power that is provided to the at least one battery cell. The battery pack charger has at least one transmitter coil for generating a magnetic field which induces a voltage in the receiver coil, and a control circuit for controlling the amount of power that is provided to the transmitter coil.Type: GrantFiled: August 4, 2015Date of Patent: April 17, 2018Assignee: Black & Decker Inc.Inventors: Jeremy D. Ashinghurst, Rouse Roby Bailey, Jr., Jason F. Busschaert, Scott J. Eshleman, Sankarshan Murthy, Christine H. Potter, Daniel Puzio, Craig A. Schell
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Publication number: 20180013360Abstract: A power tool is provided including a brushless direct-current (BLDC) electric motor having a stator and a rotor. The power tool includes power switches including high-side switches and low-side switches disposed on a direct-current (DC) bus line between a power supply and the electric motor, and a controller configured to electronically brake the motor by simultaneously closing the high-side switches or the low-side switches to electrically short the stator windings. In an embodiment, the controller is configured to monitor a voltage of the DC bus line, and if the voltage of the DC bus line is lower than a voltage threshold, execute electronic braking by toggling between closing the high-side switches and closing the low-side switches over braking cycles, and if the voltage of the DC bus line is greater than the voltage threshold, execute braking by closing only the high-side switches or the low-side switches over the braking cycles.Type: ApplicationFiled: June 29, 2017Publication date: January 11, 2018Inventors: Scott J. Eshleman, Tal Gottesman
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Publication number: 20170288585Abstract: A power tool is configured to receive power from a power supply. The power tool may include a rectifier that may output a rectified signal to a DC power bus. A switching arrangement may operate to deliver electric power from the DC power bus to an electric motor. A switch path may be electrically coupled in parallel with the rectifier on the DC power bus. The switch path includes an auxiliary capacitor in series with a switch and a state of the switch controls a discharging path for the auxiliary capacitor. A switch control circuit may be configured to detect voltage associated with at least one of the AC power supply or the DC power bus and to control state of the switch in accordance with magnitude of the detected voltage.Type: ApplicationFiled: June 15, 2017Publication date: October 5, 2017Applicant: Black & Decker Inc.Inventors: Pradeep M. Pant, Michael K. Forster, Scott J. Eshleman, Samuel G. Woods, Timothy J. Seeley, Mark T. Cherry
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Patent number: 9475180Abstract: A power tool includes a housing, a motor, an output member driven by the motor, and a reaming attachment coupled to the output member. The reaming attachment has a front end portion selectively driven in rotation by the output member to drive a fastener into a workpiece, and a reaming portion selectively driven in rotation by the output member to remove material from an end surface of a conduit. A rotational motion sensor in the housing is operable to detect rotational motion of the housing about an axis. A controller receives a signal indicative of rotational motion from the sensor, determines a direction of the rotational motion of the housing, and drives the motor in a direction corresponding to the direction of rotational motion of the housing.Type: GrantFiled: December 17, 2013Date of Patent: October 25, 2016Assignee: Black & Decker Inc.Inventors: Scott J. Eshleman, Craig A. Schell, Andrew J. Seman, Jr., Daniel Puzio, Daniele C. Brotto, Joseph P. Kelleher, Oleksiy P. Sergyeyenko