Patents by Inventor Hans Hermann

Hans Hermann 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: 4047721
    Abstract: A record player drive, comprising a belt pulley concentrically disposed relative to and connected with a turntable, a motor having a motor shaft containing sections of different diameters, and a drive belt connecting the belt pulley with the motor shaft. A guide fork shifts the belt on the sections, and an operating element stepwise sets different turntable-rotational speeds. A holder keeps the operating element in positions corresponding to drive rotational speeds of the turntable, and an elastic coupling is disposed between the guide fork and the operating element for exerting a shifting force on the guide fork when the operating element is moved with blocked guide fork in another drive position. A switch opens and closes the motor electric circuit, and a blocking device blocks the shifting movement of the guide fork, and is coupled with the switch such that with opened electric circuit the blocking is operative and with closed electric circuit is inoperative.
    Type: Grant
    Filed: April 16, 1976
    Date of Patent: September 13, 1977
    Assignee: Dual Gebruder Steidinger
    Inventor: Hans Hermann