Patents by Inventor Patrick CK Kwok

Patrick CK Kwok 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).

  • Drill level indicator
    Patent number: 7069662
    Abstract: A power tool includes a leveling device which includes a rotatable member which seeks an equilibrium position which corresponds to a level position. A rotating device includes a member which enables passage of a beam. An electrical circuit which includes an emitting device, a receiving device and an indicating device is electrically coupled such that upon activation, the emitting device emits a beam which passes through the beam passing member. The beam is received by the receiving device which, in turn, activates the indicator device. The indicator is generally a light emitting device which has a varying brightness so that the user may view the indicator from all sides of the power tool.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: July 4, 2006
    Assignee: Black & Decker Inc.
    Inventors: George CH Fung, Patrick CK Kwok, Vincent P. Cooper, Leo Driessen, Chan Ka Shing
  • Drill level indicator
    Publication number: 20040216314
    Abstract: A power tool includes a leveling device which includes a rotatable member which seeks an equilibrium position which corresponds to a level position. A rotating device includes a member which enables passage of a beam. An electrical circuit which includes an emitting device, a receiving device and an indicating device is electrically coupled such that upon activation, the emitting device emits a beam which passes through the beam passing member. The beam is received by the receiving device which, in turn, activates the indicator device. The indicator is generally a light emitting device which has a varying brightness so that the user may view the indicator from all sides of the power tool.
    Type: Application
    Filed: May 27, 2004
    Publication date: November 4, 2004
    Inventors: George Ch Fung, Patrick Ck Kwok, Vincent P. Cooper, Leo Driessen, Chan Ka Shing
  • Drill level indicator
    Publication number: 20030029050
    Abstract: A power tool includes a leveling device which includes a rotatable member which seeks an equilibrium position which corresponds to a level position. A rotating device includes a member which enables passage of a beam. An electrical circuit which includes an emitting device, a receiving device and an indicating device is electrically coupled such that upon activation, the emitting device emits a beam which passes through the beam passing member. The beam is received by the receiving device which, in turn, activates the indicator device. The indicator is generally a light emitting device which has a varying brightness so that the user may view the indicator from all sides of the power tool.
    Type: Application
    Filed: February 13, 2002
    Publication date: February 13, 2003
    Inventors: George Ch Fung, Patrick Ck Kwok, Vincent P. Cooper, Leo Driessen, Chan Ka Shing