Patents by Inventor Paul Herchenback

Paul Herchenback 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).

  • Bearing ball for a three-point connecting device
    Patent number: 4948287
    Abstract: The invention relates to a bearing ball (10, 11) for receiving the implement pin (8, 9) of an agricultural implement (1) in the catching jaw (7) of the catching hook (6) of a three-point connecting device (3) belonging to a tractor (2). The bearing ball comprises a hollow ball (2) with a cylindrical tube (14) passing through it. The central region of the cylindrical tube (14) has been provided with a formation (15) which extends radically and supports the inner face (13) of the hollow ball (12) in a force-free way. It secures the hollow ball (12) on the cylindrical tube (14) in the axial direction and permits relative rotation between the two. This provides better support because only the ends of the cylindrical tube (14) rest against the implement pin and bending of the cylindrical tube (14) no longer adversely affects the bearing ball.
    Type: Grant
    Filed: July 28, 1989
    Date of Patent: August 14, 1990
    Assignee: Jean Walterscheid GmbH
    Inventors: Paul Herchenback, Norbert Muller