Patents by Inventor Karl O. R. Kirst

Karl O. R. Kirst 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 shock absorber with two-way action
    Patent number: 4591031
    Abstract: The invention relates to a hydraulic shock absorber with two-way action, in which two pistons (18, 19), one for each direction of motion, act in a housing (1). The pistons (18, 19) are movable relative to each other in, or with, a pressure tube (6). Equalizing elements (4, 5) are provided at the ends. The pistons (18, 19) are each provided with a piston rod. The piston rods are provided with seals (38, 39) which are nearly completely relieved of pressure.
    Type: Grant
    Filed: June 22, 1984
    Date of Patent: May 27, 1986
    Assignee: Ace Controls, Inc.
    Inventor: Karl O. R. Kirst