Patents by Inventor Coenraad H. van Beek

Coenraad H. van Beek 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).

  • Infinitely variable transmission
    Patent number: 4946423
    Abstract: In an infinitely variable transmission with discs (1, 2) the movable disc (2) is connected to a cylinder wall (11), which together with a piston (3) encloses a fluid filled cylinder space (4). A sealing ring (6, 15, 17) provides one or more calibrated openings (14, 16) between the piston and the cylinder wall, so that as a result of the continuous relative movement, between the piston with sealing ring and the cylinder wall, during actuation of the transmission the calibrated openings are automatically scraped clean.
    Type: Grant
    Filed: January 9, 1989
    Date of Patent: August 7, 1990
    Assignee: Van Doorne's Transmissie B.V.
    Inventor: Coenraad H. van Beek
  • Control of an infinitely variable transmission of a vehicle
    Patent number: 4861318
    Abstract: A control device for controlling the transmission ratio of an infinitely variable transmission of a motor vehicle is disclosed. The transmission ratio is adjustably dependent on the position of a hydraulic control valve which is movable in dependence upon the difference between a predetermined desired engine speed and the actual engine speed. A stop member displaceable in dependence upon the transmission ratio regulates the minimum possible engine speed in dependence thereon.
    Type: Grant
    Filed: March 16, 1988
    Date of Patent: August 29, 1989
    Assignee: Van Doorne's Transmissie B.V.
    Inventors: Coenraad H. van Beek, Wilhelmus J. M. van Wijk