Patents by Inventor Rolf Stapelfeldt

Rolf Stapelfeldt 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: 4837413
    Abstract: A rotary switch, adapted to be secured to a panel, comprises a stator having a bearing flange provided with a cylindrical side wall and an underside; a circumferential groove provided in the side wall and an annular groove provided in the underside; and a rotor extending over the bearing flange and having a cylindrical side wall surrounding the cylindrical side wall of the bearing flange. The rotor is rotatably supported on and relative to the stator. There are further provided a stationary contact mounted in the stator; a movable contact carried by the rotor for displacement relative to the stationary contact upon turning of the rotor; and a first sealing ring received in the circumferential groove and projecting radially outwardly from the cylindrical side wall of the bearing flange. The first sealing ring sealingly and slidably engages the cylindrical side wall of the rotor.
    Type: Grant
    Filed: October 28, 1987
    Date of Patent: June 6, 1989
    Assignee: Standard Elektrik Lorenz Aktiengesellschaft
    Inventors: Gunter Schwab, Helmut Reiber, Rolf Stapelfeldt
  • Patent number: 4646344
    Abstract: The mobile radio set has a rectangular parallelepiped-shaped case suitable for mounting in the dashboard of an automobile. The handset can be locked at its earpiece and mouthpiece into a cradle mounted on the front panel of the case so that the handset can be positioned in a rest position across the front panel. The keys, mounted on the side of the handset facing away from the cradle, are readable and operable in the rest position of the handset. With a lock mounted in the handset, the mobile radio set can be deenergized and the handset can be blocked in the cradle.
    Type: Grant
    Filed: March 20, 1985
    Date of Patent: February 24, 1987
    Assignee: International Standard Electric Corporation
    Inventors: Bruno Goldhorn, Rolf Stapelfeldt