The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 14, 1990
Filed:
Jul. 28, 1989
Paul Herchenback, Ruppichteroth, DE;
Norbert Muller, Ruppichteroth, DE;
Jean Walterscheid GmbH, , DE;
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.