Patents by Inventor Thomas Preuhs

Thomas Preuhs 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).

  • Hydraulic actuating system
    Patent number: 6588551
    Abstract: A skate, such as a roller skate or inline skate, comprises a shoe, a chassis and rollers or wheels suspended in the chassis. The skate also includes a braking system for at least one of the rollers or wheels. The braking system comprises a braking element which engages the roller and includes at least one actuation element for acting on the braking element. The braking force of the braking system is obtainable at low rotational or rolling speed of the roller to be braked and is small and increases with increasing rotational or rolling speed of the roller to be braked.
    Type: Grant
    Filed: April 2, 2001
    Date of Patent: July 8, 2003
    Inventors: Martin Kammerer, Thomas Preuhs