Patents by Inventor Peter Schonewald

Peter Schonewald 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).

  • Shock-proof hydraulic cylinder
    Patent number: 6283008
    Abstract: The invention relates to a shockproof hydraulic cylinder that has a cylinder housing (1), in which a plunger (4) that is driven via a plunger shaft (10) is arranged to move axially, and optionally a hollow-cylinder damping plunger (11). Using different embodiments, an end-position damping is carried out on one or both sides. Plunger shaft (10), plunger (4) and damping plunger (11) can be designed in a hollow-cylinder form.
    Type: Grant
    Filed: April 12, 2000
    Date of Patent: September 4, 2001
    Assignee: Still GmbH
    Inventors: Peter Schönewald, Christian Baerwolff, Heniz Gaffke
  • Industrial truck with a lifting framework
    Patent number: 5752583
    Abstract: An industrial truck having a lifting slide which is moveable up and down on a lifting framework is disclosed. The lifting framework is fixed to at least one vertical load chain by at least one chain connecting piece. The load chain is at least partly guided in a chain guide which has an opening on at least one side. With this arrangement, the load supporting chain does not damage or soil other components of the industrial truck when travelling over irregularities in the ground.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: May 19, 1998
    Assignee: Still GmbH
    Inventor: Peter Schonewald