Patents by Inventor Sankarshan Murthy
Sankarshan Murthy 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: 10793404Abstract: A system has a hoist system to lift a payload to a position adjacent to a ceiling of a room. Image sensor systems collect visual data and payload depth data within the payload and ambient depth data within the room. A controller is connected to the hoist system and the image sensor systems. The controller is configured to control the motion of the hoist system. The motion of the hoist system is controlled in part by the ambient depth data from the room.Type: GrantFiled: January 24, 2019Date of Patent: October 6, 2020Assignee: BUMBLEBEE SPACES INC.Inventors: Sankarshan Murthy, Garrett Rayner, Prahlad Athreya, Aaron Licata, Deepthi Krovvidi, Scott Tandoi, Terrence Williams
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Publication number: 20190233264Abstract: A system has a hoist system to lift a payload to a position adjacent to a ceiling of a room. Image sensor systems collect visual data and payload depth data within the payload and ambient depth data within the room. A controller is connected to the hoist system and the image sensor systems. The controller is configured to control the motion of the hoist system. The motion of the hoist system is controlled in part by the ambient depth data from the room.Type: ApplicationFiled: January 24, 2019Publication date: August 1, 2019Inventors: Sankarshan MURTHY, Garrett RAYNER, Prahlad ATHREYA, Aaron LICATA, Deepthi KROVVIDI, Scott TANDOI, Terrence WILLIAMS
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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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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: 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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Patent number: 9464893Abstract: A power tool includes a housing, an output shaft having a tool axis, and a motion sensor that senses motion of the tool housing. A control circuit receives an input signal from the motion sensor, to make a first determination, based on the input signal, whether the tool is being operated in a horizontal mode or a vertical mode. The control circuit makes a second determination, based on the input signal, whether the tool axis is substantially level when the tool is being operated in the horizontal mode or the tool axis is substantially plumb when the tool is being operated in the vertical mode. An indicator receives an output signal from the control circuit that causes the indicator to indicate whether the tool axis is level when being operated in the horizontal mode or plumb when being operated in the vertical mode.Type: GrantFiled: February 28, 2013Date of Patent: October 11, 2016Assignee: Black & Decker Inc.Inventors: John C. Vanko, Craig A. Schell, Robert S. Gehret, Michael K. Forster, Tal Gottesman, Sankarshan Murthy, Daniel Puzio, Joerg Zellerhoff, Robert A. Usselman, Scott J. Eshleman, Joao Norona
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Patent number: 9352456Abstract: A power tool includes a housing, a motor disposed in the housing, a transmission disposed in the housing and coupled to the motor, an output end effector coupled to the transmission, a control circuit for controlling power delivery from a power source to the motor, and a force sensing electronic clutch including a force sensor coupled to a substantially stationary element of the transmission. The force sensor senses a reaction torque transmitted from the end effector to at least a portion of the transmission. The sensor is configured to generate a first electronic signal corresponding to an amount of the reaction torque. The control circuit compares the first electronic signal with a second electronic signal corresponding to a desired threshold torque value, and initiates a protective operation when a value of the first electronic signal indicates that the reaction torque has exceeded the desired threshold torque value.Type: GrantFiled: October 18, 2012Date of Patent: May 31, 2016Assignee: Black & Decker Inc.Inventors: Sankarshan Murthy, John Howson, Tal Gottesman, Scott J. Eshleman, Russell David Hester, Craig Alan Schell, Daniel Puzio, Daniel L. Schwartz
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Publication number: 20160079800Abstract: 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: August 4, 2015Publication date: March 17, 2016Inventors: 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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Patent number: 9216504Abstract: A power tool that includes a housing, a motor, a pair of motor bearings, a transmission, an output spindle and front and rear spindle bearings. The motor is received in the housing and includes a stator and an output shaft that extends through the stator. The motor bearings support the output shaft for rotation relative to the housing and are disposed on opposite ends of the stator. The transmission is driven by the motor and includes an input pinion that is mounted to the output shaft for rotation therewith. The output spindle is driven by the transmission. The front spindle bearing is mounted to a front end of the output shaft radially between the housing and the output shaft. The rear spindle bearing is mounted to a rear end of the output spindle and a portion of the rear spindle bearing rotates with the output shaft.Type: GrantFiled: November 15, 2013Date of Patent: December 22, 2015Assignee: BLACK & DECKER INC.Inventors: Qiang Zhang, David C. Tomayko, Sankarshan Murthy, James T. Rill
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Patent number: 9211636Abstract: A power tool includes a housing, an output member that rotates about a longitudinal axis, and a motor drivably connected to the output member. A rotational motion sensor is arranged in the housing and operable to detect a user input that includes a rotational motion of the housing in a desired rotational direction about the longitudinal axis of the output member. A controller is configured to receive a first input indicative of a user-desired rotational motion of the output member, and a second input, from the rotational motion sensor, indicative of an actual rotational motion of the power tool. The controller determines a user-desired rotational direction of the output member about the axis from the first input, determines an actual rotational direction of the housing about the axis from the second input, and causes the motor to drive the output member to simulate ratcheting movement in the user-desired rotational direction.Type: GrantFiled: January 31, 2013Date of Patent: December 15, 2015Assignee: BLACK & DECKER INC.Inventors: Scott J. Eshleman, Craig A. Schell, Andrew E. Seman, Jr., Daniel Puzio, Daniele C. Brotto, Joseph P. Kelleher, Sankarshan Murthy
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Patent number: 9136729Abstract: 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: February 18, 2013Date of Patent: September 15, 2015Assignee: 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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Patent number: 8887831Abstract: A power tool includes a housing, a motor contained in the housing, an output shaft extending proximate a front of the housing, an end effector coupled to the output shaft and configured to hold an accessory; and a transmission disposed in the housing between the motor and the output shaft. The transmission includes a variable ratio gear set configured to transmit power from the motor to the output shaft at a substantially variable speed ratio. The transmission may further include a constant ratio gear set configured to transmit power from the motor at a substantially constant speed ratio. The transmission may be automatically or manually shiftable between a first mode where it transmits power through the constant speed ratio gear set and a second mode where it transmits power through the variable speed ratio gear set.Type: GrantFiled: November 17, 2011Date of Patent: November 18, 2014Assignee: Black & Decker Inc.Inventors: Qiang J. Zhang, Beverly Matthews, Sankarshan Murthy
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Patent number: 8823234Abstract: An electric motor has a rotor and a stator. The rotor or the stator has arced permanent magnets that have essentially the same inner radius (IR) and outer radius (OR). In an aspect, the stator has a stator housing having a plurality of poles. Each pole includes a plurality of flat magnets affixed to an inner surface of the stator housing. In an aspect, flats on the outside of the stator housing key the stator assembly in a power tool housing. In an aspect, flat magnets are pre-magnetized, pre-assembled with alternating magnetic polarities, inserted into a stator housing, and remagnetized to a final, desired magnetic polarity configuration. In an aspect, pre-magnetized magnets and unmagnetized magnets are pre-assembled with unmagnetized magnets between magnetized magnets, the pre-assembled magnets inserted into a stator housing, and the unmagnetized magnets magnetized to a final, desired magnetic polarity configuration.Type: GrantFiled: October 12, 2007Date of Patent: September 2, 2014Assignee: Black & Decker Inc.Inventors: Earl M. Ortt, Hung T. Du, Sankarshan Murthy
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Publication number: 20140069675Abstract: A power tool that includes a housing, a motor, a pair of motor bearings, a transmission, an output spindle and front and rear spindle bearings. The motor is received in the housing and includes a stator and an output shaft that extends through the stator. The motor bearings support the output shaft for rotation relative to the housing and are disposed on opposite ends of the stator. The transmission is driven by the motor and includes an input pinion that is mounted to the output shaft for rotation therewith. The output spindle is driven by the transmission. The front spindle bearing is mounted to a front end of the output shaft radially between the housing and the output shaft. The rear spindle bearing is mounted to a rear end of the output spindle and a portion of the rear spindle bearing rotates with the output shaft.Type: ApplicationFiled: November 15, 2013Publication date: March 13, 2014Applicant: Black & Decker Inc.Inventors: Qiang Zhang, David C. Tomayko, Sankarshan Murthy, James T. Rill
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Patent number: 8631880Abstract: A power tool with a housing, a motor, a transmission, a spindle and an impact mechanism. The motor has an output shaft that drives the transmission. The transmission has a plurality of planet gears, a planet carrier journally supporting the planet gears for rotation about an axis, and a ring gear that is in meshing engagement with the planet gears. The impact mechanism has a plurality of anvil lugs, an impactor and an impactor spring. The anvil lugs are coupled to the ring gear and are not engaged by the planet gears. The impactor is mounted to pivot about the spindle and has a plurality of hammer lugs. The impactor spring biases the impactor toward the ring gear to cause the hammer lugs to engage the anvil lugs. A power tool having an impact mechanism with an external adjusting member that can be moved to vary a trip torque of the impact mechanism is also provided.Type: GrantFiled: April 21, 2010Date of Patent: January 21, 2014Assignee: Black & Decker Inc.Inventors: Sankarshan Murthy, Qiang Zhang, Daniel Puzio, James T. Rill
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Publication number: 20140000921Abstract: A power tool includes a housing, an output shaft having a tool axis, and a motion sensor that senses motion of the tool housing. A control circuit receives an input signal from the motion sensor, to make a first determination, based on the input signal, whether the tool is being operated in a horizontal mode or a vertical mode. The control circuit makes a second determination, based on the input signal, whether the tool axis is substantially level when the tool is being operated in the horizontal mode or the tool axis is substantially plumb when the tool is being operated in the vertical mode. An indicator receives an output signal from the control circuit that causes the indicator to indicate whether the tool axis is level when being operated in the horizontal mode or plumb when being operated in the vertical mode.Type: ApplicationFiled: February 28, 2013Publication date: January 2, 2014Applicant: BLACK & DECKER INC.Inventors: John C. Vanko, Craig A. Schell, Robert S. Gehret, Michael K. Forster, Tal Gottesman, Sankarshan Murthy, Daniel Puzio, Joerg Zellerhoff, Robert A. Usselman, Scott J. Eshleman, Joao Norona
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Publication number: 20130335014Abstract: 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: February 18, 2013Publication date: December 19, 2013Applicant: 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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Patent number: 8584770Abstract: A power tool with a motor, a housing, a transmission, an output spindle, a front bearing and a rear bearing. The motor has an output shaft. The transmission is disposed in the housing and receives a rotary input from the output shaft. The transmission includes an input planetary stage, which has an input planet carrier, and an output planetary stage. The output spindle is driven by the transmission and has a first end, which extends at least partly through the input planetary stage, and a second end opposite the first end. The front bearing is disposed between the output spindle and the housing to support the second end of the output spindle for rotation about the spindle axis. The rear bearing indirectly supports the first end of the output spindle in the housing for rotation about the spindle axis.Type: GrantFiled: March 23, 2010Date of Patent: November 19, 2013Assignee: Black & Decker Inc.Inventors: Qiang Zhang, David C. Tomayko, Sankarshan Murthy, James T. Rill
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Patent number: RE46827Abstract: A power tool that includes a housing, a motor, a planetary transmission, a first bearing and a second bearing. The motor is disposed in the housing and includes an output shaft. The planetary transmission has a sun gear, a plurality of first planet gears, a first ring gear and a carrier. The sun gear is driven by the output shaft. The first planet gears are driven by the sun gear and have teeth that are meshingly engaged to teeth of the first ring gear. The carrier includes a rear carrier plate and a front carrier plate between which the first and second planet gears are received. The rear carrier plate includes a first bearing aperture. The first bearing is received in the first bearing aperture and is configured to support the output shaft. The second bearing is received onto the rear carrier plate to support the carrier relative to the housing.Type: GrantFiled: June 5, 2015Date of Patent: May 8, 2018Assignee: Black & Decker Inc.Inventors: Scott Rudolph, Sankarshan Murthy, Daniel Puzio, Qiang Zhang, Aris Cleanthous, Mehdi Abolhassani, Ren H. Wang, David Tomayko