Patents by Inventor Edwin A. Lorenz

Edwin A. Lorenz 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).

  • Low tire pressure warning system with mechanical latching
    Patent number: 3977355
    Abstract: An air switch senses abnormally low pressure in a tire and provides a pneumatic signal to an actuator which moves a magnet from a normal position to a warning position. An electrical detection system senses that the magnet is in a warning position and provides a low pressure warning signal to the vehicle operator. The actuator contains a mechanical latch to assure that the magnet remains in a warning position even if the pneumatic signal should cease. A reset feature allows the latch to be disengaged to return the actuating mechanism to normal condition when proper tire inflation pressure has been restored.
    Type: Grant
    Filed: November 12, 1975
    Date of Patent: August 31, 1976
    Assignee: General Motors Corporation
    Inventors: Edwin A. Lorenz, Manfred P. H. Schlanzky