Patents by Inventor Sankarshan N. Murthy

Sankarshan N. 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).

  • Hybrid impact tool
    Patent number: 10513021
    Abstract: A power tool having a rotary impact mechanism and a mode change mechanism. The impact mechanism is driven by an output member of a transmission and includes a hammer and an anvil. The mode change mechanism includes a mode collar that is movable between a first position, in which the mode collar directly couples the hammer to the transmission output member to inhibit movement of the hammer relative to the spindle, and a second position in which the mode collar does not inhibit movement of the hammer relative to the spindle.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: December 24, 2019
    Assignee: BLACK & DECKER INC.
    Inventors: Scott M. Rudolph, Daniel Puzio, Sankarshan N. Murthy, Aris Cleanthous, Joseph Stauffer, Robert S. Gehret, James D. Hays, Qiang Zhang
  • HYBRID IMPACT TOOL
    Publication number: 20160052118
    Abstract: A power tool having a rotary impact mechanism and a mode change mechanism. The impact mechanism is driven by an output member of a transmission and includes a hammer and an anvil. The mode change mechanism includes a mode collar that is movable between a first position, in which the mode collar directly couples the hammer to the transmission output member to inhibit movement of the hammer relative to the spindle, and a second position in which the mode collar does not inhibit movement of the hammer relative to the spindle.
    Type: Application
    Filed: November 4, 2015
    Publication date: February 25, 2016
    Inventors: Scott M. Rudolph, Daniel Puzio, Sankarshan N. Murthy, Aris Cleanthous, Joseph Stauffer, Robert S. Gehret, James D. Hays, Qiang Zhang
  • Hybrid impact tool
    Patent number: 9193053
    Abstract: A power tool having a rotary impact mechanism and a mode change mechanism. The impact mechanism is driven by an output member of a transmission and includes a hammer and an anvil. The mode change mechanism includes a mode collar that is movable between a first position, in which the mode collar directly couples the hammer to the transmission output member to inhibit movement of the hammer relative to the spindle, and a second position in which the mode collar does not inhibit movement of the hammer relative to the spindle. 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: Grant
    Filed: September 24, 2009
    Date of Patent: November 24, 2015
    Assignee: BLACK & DECKER INC.
    Inventors: Scott M. Rudolph, Daniel Puzio, Sankarshan N. Murthy, Aris Cleanthous, Joseph Stauffer, Robert S. Gehret, James D. Hays, Qiang J. Zhang
  • Hybrid impact tool
    Patent number: 8794348
    Abstract: A power tool having a rotary impact mechanism and a mode change mechanism. The impact mechanism is driven by an output member of a transmission and includes a hammer and an anvil. The mode change mechanism includes a mode collar that is movable between a first position, in which the mode collar directly couples the hammer to the transmission output member to inhibit movement of the hammer relative to the spindle, and a second position in which the mode collar does not inhibit movement of the hammer relative to the spindle.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: August 5, 2014
    Assignee: Black & Decker Inc.
    Inventors: Scott M. Rudolph, Daniel Puzio, Sankarshan N. Murthy, Aris Cleanthous, Joseph Stauffer, Robert S. Gehret, James D. Hays, Qiang Zhang
  • HYBRID IMPACT TOOL
    Publication number: 20130306341
    Abstract: A power tool having a rotary impact mechanism and a mode change mechanism. The impact mechanism is driven by an output member of a transmission and includes a hammer and an anvil. The mode change mechanism includes a mode collar that is movable between a first position, in which the mode collar directly couples the hammer to the transmission output member to inhibit movement of the hammer relative to the spindle, and a second position in which the mode collar does not inhibit movement of the hammer relative to the spindle.
    Type: Application
    Filed: July 22, 2013
    Publication date: November 21, 2013
    Applicant: Black & Decker Inc.
    Inventors: Scott M. Rudolph, Daniel Puzio, Sankarshan N. Murthy, Aris Cleanthous, Joseph Stauffer, Robert S. Gehret, James D. Hays, Qiang Zhang
  • HYBRID IMPACT TOOL
    Publication number: 20100071923
    Abstract: A power tool having a rotary impact mechanism and a mode change mechanism. The impact mechanism is driven by an output member of a transmission and includes a hammer and an anvil. The mode change mechanism includes a mode collar that is movable between a first position, in which the mode collar directly couples the hammer to the transmission output member to inhibit movement of the hammer relative to the spindle, and a second position in which the mode collar does not inhibit movement of the hammer relative to the spindle. 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: Application
    Filed: September 24, 2009
    Publication date: March 25, 2010
    Inventors: Scott M. Rudolph, Daniel Puzio, Sankarshan N. Murthy, Aris Cleanthous, Joseph Stauffer, Robert S. Gehret, James D. Hays, Qiang J. Zhang