Patents by Inventor Heinz H. Klein

Heinz H. Klein 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 and locking device
    Patent number: 4422294
    Abstract: A hydraulic actuating and locking device includes a locking piston within a cylinder, an actuating piston within a cylinder in the rear surface of the locking piston and a pressure multiplier connected to the space behind the piston. A passage, constituting a high pressure cylinder, connects the space behind the piston to an oil reservoir and is adapted to receive and be sealed by the high pressure piston of the pressure multiplier.
    Type: Grant
    Filed: April 16, 1981
    Date of Patent: December 27, 1983
    Assignee: Dr. Boy GmbH
    Inventor: Heinz H. Klein