Patents by Inventor Lothar Worlitz

Lothar Worlitz 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).

  • Opto-electronical switching device, specially for motor vehicles
    Patent number: 4251723
    Abstract: An opto-electronical switching device provided with an operating push-button key, particularly for motor vehicles, comprises a housing, containing a photodiode and a phototransistor, a rectangular push-button key, guided in the housing, with aperture plate and with an after-connected interrogating circuit, responding to the switching condition of the phototransistor. A rectangular leaf spring, curved transversely to the longitudinal direction, supported with its corners upon ribs of the push-button key inner surface and curved away from the push-button key inner surface, and the counter-support of the leaf spring is formed by a pin in the geometrical mid-point.
    Type: Grant
    Filed: January 8, 1979
    Date of Patent: February 17, 1981
    Assignee: Firma Leopold Kostal
    Inventors: Volker Speidel, Eduard Bergmann, Lothar Worlitz