Patents by Inventor Ernst-Wilhelm Hoffmann

Ernst-Wilhelm Hoffmann 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: 5944534
    Abstract: A steering column module electrically connected to the electrical system of a vehicle with the fewest number of connector parts is attached to the outer tube of a steering column of the motor vehicle. The module includes a carrier and functional units attached to the carrier. The carrier is attached to the outer tube of the steering column. Plug-in connector parts are provided on the lower sides of the functional units. A plate-shaped distributing device having upper and lower sides is also included. The distributing device encompasses the steering column and is aligned perpendicular thereto. The distributing device includes mating connector parts on its upper side and a plug-in connector arrangement on its lower side. Each mating connector part is coupled to a respective one of the plug-in connector parts.
    Type: Grant
    Filed: November 18, 1997
    Date of Patent: August 31, 1999
    Assignee: Leopold Kostal GmbH & Co. KG
    Inventors: Ernst Wilhelm Hoffmann, Rudiger Menz, Jorg Welschholz
  • Patent number: 5939686
    Abstract: An electrical rotary push switch includes a housing having a longitudinal axis and an actuating element mounted around the housing. The actuating element is rotatable around and longitudinally movable about the housing to define switching positions. A functional element is mounted around the housing and is coupled to the actuating element to rotate as the actuating element rotates. The functional element remains fixed in position as the actuating element longitudinally moves. A first electrical contact part is slidably held to the housing to be longitudinally movable along the housing longitudinal axis. The first contact part is coupled to the functional element such that the first contact part longitudinally moves as the actuating element rotates and remains fixed in position as the actuating element longitudinally moves. A second electrical contact part is slidably held to the housing to be longitudinally movable along the housing longitudinal axis.
    Type: Grant
    Filed: March 5, 1998
    Date of Patent: August 17, 1999
    Assignee: Leopold Kostal GmbH & Co. KG
    Inventors: Wolfgang Bellach, Thomas Eikenberg, Ernst-Wilhelm Hoffmann