Patents by Inventor Rienhard Neuper

Rienhard Neuper 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).

  • Valve arrangement for controlling the stroke of a telescoping prop
    Patent number: 4344354
    Abstract: The telescopically extendable prop (1) has at the periphery of the intermediate prop (3) abutments (30) which cooperate with a valve (15) before the intermediate prop (3) has attained its highest extended position. The valve (15) stops the extending stroke of the intermediate prop (3) and is releasing the beginning of the extending stroke of the top prop (4). As soon as a predetermined pressure is built up in the consolidating conduit (10) of the top prop (4), the valve (27) subjected to this pressure is overacting the valve (15) cooperating with the abutments (30) of the intermediate prop (3), whereupon the consolidating stroke is completed by pressurizing the intermediate prop (3) with pressurizing fluid. (FIG.
    Type: Grant
    Filed: February 14, 1980
    Date of Patent: August 17, 1982
    Assignee: Voest-Alpine Aktiengesellschaft
    Inventors: Heinrich Suessenbeck, Gottfried Siebenhofer, Rienhard Neuper, Alfred Zitz