Patents by Inventor Gerhard Stummer

Gerhard Stummer 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).

  • Arrangement for tensioning a gateway conveyor in a sloping gateway
    Patent number: 4167998
    Abstract: An arrangement for tensioning a gateway conveyor in a sloping gateway during longwall working using supports having base frames which are provided with pulling and shifting hydraulic actuators, wherein in a tensioning device is provided at least at one of the supports and is connected at one end to the gateway conveyor and at the other end to a slide member which is slidably guided by the base frame of the support for a movement which is transverse to the longitudinal direction of the gateway conveyor, characterized in that the slide member which is slidably guided for a movement which is transverse to the longitudinal direction of the gateway conveyor consists of a guide frame, which is supported by the base frame against forces acting in the longitudinal direction of the gateway conveyor, the cylinder of the pulling and shifting actuator is axially immovably mounted in the base frame and its piston is connected to said guide frame, which when retracted extends on opposite sides of the pulling and shifting a
    Type: Grant
    Filed: July 12, 1977
    Date of Patent: September 18, 1979
    Assignee: Vereinigte Osterreichische Eisen- und Stahlwerke-Alpine Montan Aktiengesellschaft
    Inventors: Alfred J. Zitz, Heinrich Sussenbeck, Gerhard Stummer