Patents by Inventor Rudolf Barmann

Rudolf Barmann 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).

  • Patent number: 7201541
    Abstract: A prop head bearing between the roof bar and the prop (4) of a shield-type support frame, comprising a ball-joint socket (3) on the roof bar and open towards the prop for receiving a ball-joint head (2) on the prop (4), with at least one movable securing element (6, 7) which, when in a secured position, engages in a recess (12, 13) in the joint head (2) to prevent accidental lifting of the joint head (2) out of the socket (3), and with a bolt which locks the securing element (6, 7) in the secured position, in which that the securing element is in the form of a securing pin (6, 7) movable along its longitudinal axis between the secured position and an assembly position, wherein the securing pin (6, 7) is lockable by the bolt (14, 19) in the assembly position, in which it does not engage in the recess (12, 13) in the joint head (2).
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: April 10, 2007
    Assignee: DBT GmbH
    Inventor: Rudolf Barmann
  • Publication number: 20060024138
    Abstract: A prop head bearing between the roof bar and the prop (4) of a shield-type support frame, comprising a ball-joint socket (3) on the roof bar and open towards the prop for receiving a ball-joint head (2) on the prop (4), with at least one movable securing element (6, 7) which, when in a secured position, engages in a recess (12, 13) in the joint head (2) to prevent accidental lifting of the joint head (2) out of the socket (3), and with a bolt which locks the securing element (6, 7) in the secured position, in which that the securing element is in the form of a securing pin (6, 7) movable along its longitudinal axis between the secured position and an assembly position, wherein the securing pin (6, 7) is lockable by the bolt (14, 19) in the assembly position, in which it does not engage in the recess (12, 13) in the joint head (2).
    Type: Application
    Filed: July 29, 2005
    Publication date: February 2, 2006
    Inventor: Rudolf Barmann