Patents by Inventor Rapp Karlheinz

Rapp Karlheinz 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).

  • Medical or dental-medical treatment chair or a head support for such a treatment chair
    Patent number: 6520585
    Abstract: A medical or dental-medical treatment chair has a backrest and a head support. The head support is pivotally connected with the backrest by means of a joint device having a first joint, and being fixable in a respective pivot position by means of a fixing device. For improving the support function, the fixing device has a piston cylinder with two working chambers. The piston cylinder is connected with joint parts of the first joint. The working chambers are connected with one another by means of a connection line in which a valve is disposed that can be selectively opened and closed. An actuating member is provided for the selective opening and closing of the valve.
    Type: Grant
    Filed: March 21, 2001
    Date of Patent: February 18, 2003
    Assignee: Kaltenbach & Voight GmbH & Co.
    Inventors: Hummler Georg, Von Bank Reinhold, Rapp Karlheinz