Patents by Inventor Weldon H. Clark, Jr.

Weldon H. Clark, Jr. 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).

  • Impact rotary tool with drill mode
    Patent number: 8122971
    Abstract: An impact rotary tool is provided that is switchable between an impact mode where the tool delivers an impacting torque on an output tool and a drill mode where the driver delivers a smooth output on an output tool. The impact rotary tool includes an impact mechanism and a hammer block that in the impact mode is movable parallel to the axis of the driver shaft and delivers reciprocating blows to rotate an anvil and in the drill mode substantially constantly engages the anvil. The impact mechanism includes a stopper that does not contact the hammer block in the impact mode and engages the hammer block in the drill mode to maintain the substantially constant contact between the hammer block and the anvil.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: February 28, 2012
    Assignee: Techtronic Power Tools Technology Limited
    Inventors: Jason P. Whitmire, Weldon H. Clark, Jr.
  • IMPACT ROTARY TOOL WITH DRILL MODE
    Publication number: 20110011606
    Abstract: An impact rotary tool is provided that is switchable between an impact mode where the tool delivers an impacting torque on an output tool and a drill mode where the driver delivers a smooth output on an output tool. The impact rotary tool includes an impact mechanism and a hammer block that in the impact mode is movable parallel to the axis of the driver shaft and delivers reciprocating blows to rotate an anvil and in the drill mode substantially constantly engages the anvil. The impact mechanism includes a stopper that does not contact the hammer block in the impact mode and engages the hammer block in the drill mode to maintain the substantially constant contact between the hammer block and the anvil.
    Type: Application
    Filed: September 23, 2010
    Publication date: January 20, 2011
    Inventors: Jason P. Whitmire, Weldon H. Clark, JR.
  • Stepped drive shaft for a power tool
    Patent number: 7207393
    Abstract: A shaft comprises an input portion and a tang. The tang has a first section, a second section, and a radial bore. The second section is disposed between the first section and the input portion along an axis. A radial cross section of the first section is less than a radial cross section of the second section. The radial bore is disposed on the first section.
    Type: Grant
    Filed: December 2, 2004
    Date of Patent: April 24, 2007
    Assignee: Eastway Fair Company Ltd.
    Inventors: Weldon H. Clark, Jr., Elton Lee Watson