Patents by Inventor Adolf Gebhardt

Adolf Gebhardt 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).

  • Longitudinally adjustable gas spring and elevating mechanism with such gas spring
    Patent number: 5269398
    Abstract: An elevating mechanism for chairs, tables or the like has a guide tube for a gas spring. The guide tube has a bottom plate with an opening. In its section penetrating through the bottom plate the piston rod is provided with a necking on which a retaining ring is arranged.
    Type: Grant
    Filed: September 20, 1991
    Date of Patent: December 14, 1993
    Assignee: Suspa Compart AG
    Inventors: Herbert Wolf, Adolf Gebhardt, Ludwig Stadelmann
  • Gas spring adjustable in length for vertically adjustable chairs, tables and the like
    Patent number: 4844392
    Abstract: A gas spring adjustable in length has a housing and a piston rod brought out at one end. Disposed at the opposite end is a valve by means of which movements of longitudinal adjustment of the piston rod relative to a housing filled with a pressure medium are released or stopped. These gas springs are principally used for the vertical adjustment of chairs or tables. In order to make said vertical adjustment more comfortable, a damper valve is disposed in the valve effecting in different manner in each instance the throttling on the insertion of the piston rod into the housing or on the extraction of said piston rod out of the housing.
    Type: Grant
    Filed: November 18, 1987
    Date of Patent: July 4, 1989
    Assignee: Fritz Bauer + Sohne oHG
    Inventors: Hans-Peter Bauer, Hans J. Bauer, Adolf Gebhardt