Patents by Inventor Hendrikus Franciscus Lamers

Hendrikus Franciscus Lamers 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: 5890987
    Abstract: Continuously variable transmission, for a motor vehicle, provided with a primary pulley with an input pulley shaft, a secondary pulley with an output pulley shaft, a drive belt positioned around the primary and secondary pulleys and a transmission mechanism which is constructed in combination with a direct/neutral/reverse group and is positioned after the secondary pulley and has at least two adjustable transmission ratios for forward drive. The primary pulley with input pulley shaft and the secondary pulley with output pulley shaft are each coupled via a gear group to, respectively, an input transmission shaft and an output transmission shaft. The two transmission shafts essentially lie in the extension of one another and the two pulleys are located on either side of the axis line of the two transmission shafts. A hydraulic control circuit is installed which has at least a primary and a secondary control valve for controlling the pressures for the primary and the secondary pulley respectively.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: April 6, 1999
    Assignee: Van Doorne's Transmissie B.V.
    Inventor: Hendrikus Franciscus Lamers