Patents by Inventor Kaspar Ritter

Kaspar Ritter 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).

  • Patent number: 4074891
    Abstract: A winding mechanism-drive, particularly for construction cranes or the like hoisting devices, including a normal three-phase current-electromotor, a hydrostatic transmission with electronic-hydraulic servo-regulation for the continuous infinite variations of the feeding-speeds and -moments, the motor part of which is operatively connected with a cable drum preferably via a mechanical reduction transmission, as well a spring force-actuated locking brake for the cable drum automatically electro-hydraulically releasing in the balanced condition between load moment and drive moment.
    Type: Grant
    Filed: December 18, 1975
    Date of Patent: February 21, 1978
    Assignee: KOPAT Gesellschaft fur Konstruktion, Entwicklung und Patentverwertung m.b.H. & Co. KG
    Inventor: Kaspar Ritter