Patents by Inventor Stefan Knuppel

Stefan Knuppel 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).

  • TRIGGER MECHANISM
    Publication number: 20090026058
    Abstract: A trigger mechanism for an electric power tool, comprises a spring-loaded trigger movable between an foremost position and an rearmost position, an adjuster for adjusting the rearmost position, an electrical switch arranged for closing by the trigger while the trigger is in an intermediate position, and a variable resistor arranged for operation by the trigger while the trigger is in an intermediate position to provide a resistance having a value dependent upon the position of the trigger. A locking device is included for locking the trigger near the rearmost position, and which is movable in opposite directions and arranged to lock the trigger near the rearmost position when the locking device is moved in either one of opposite directions.
    Type: Application
    Filed: July 24, 2007
    Publication date: January 29, 2009
    Applicant: DEFOND COMPONENTS LIMITED
    Inventor: Stefan KNUPPEL
  • Trigger mechanism
    Patent number: 7476821
    Abstract: A trigger mechanism for an electric power tool, comprises a spring-loaded trigger movable between an foremost position and an rearmost position, an adjuster for adjusting the rearmost position, an electrical switch arranged for closing by the trigger while the trigger is in an intermediate position, and a variable resistor arranged for operation by the trigger while the trigger is in an intermediate position to provide a resistance having a value dependent upon the position of the trigger. A locking device is included for locking the trigger near the rearmost position, and which is movable in opposite directions and arranged to lock the trigger near the rearmost position when the locking device is moved in either one of opposite directions.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: January 13, 2009
    Assignee: Defond Components Limited
    Inventor: Stefan Knuppel