Patents by Inventor Wilhelm Strache

Wilhelm Strache 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).

  • Electromotive drive for a control element
    Patent number: 4997069
    Abstract: There is provided an electromotive drive for a control element, the overall drive is without self-inhibition, for which purpose its screw transmission has rolling elements in the thread, and the drive motor is a rotating field magnet. Provision is made for a freewheel clutch disposed between the drive motor and the screw transmission. A non-inhibiting reduction gear may be arranged between the freewheel clutch and the drive motor.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: March 5, 1991
    Assignee: GESTRA Aktiengesellschaft
    Inventor: Wilhelm Strache
  • Throttle valve
    Patent number: 4109683
    Abstract: A throttle valve formed from two jackets each having through bores. Each jacket includes two groups of bores, one group of bores being equally spaced from each other and the other group of bores having an intermediate bore unequally spaced from the outer end bores. The jackets are rotatable relatively to each other so as to align the bores for maximum and minimum flow.
    Type: Grant
    Filed: November 24, 1976
    Date of Patent: August 29, 1978
    Assignee: Gestra-KSB Vertriebsgesellschaft
    Inventor: Wilhelm Strache