Patents by Inventor Petrus H. Swart

Petrus H. Swart 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).

  • Gear ratio selection apparatus
    Patent number: 4294341
    Abstract: Apparatus for controlling the operation of a vehicle's gear box. The apparaus generates electrical signals which are proportional to the vehicle's speed, the speed of the vehicle's engine, and the position of the vehicle's throttle.These signals are used to compute which gear is to be engaged at any particular instant, and where necessary, gear selection signals are generated. The gear selection signals are used to actuate the vehicle's clutch, and to control solenoids which manipulate the gear box.
    Type: Grant
    Filed: February 9, 1979
    Date of Patent: October 13, 1981
    Inventor: Petrus H. Swart