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:
Feb. 05, 2002
Filed:
Sep. 01, 1999
Bernd Hühn, Elchingen, DE;
Manfred Lotter, Neu-Ulm, DE;
Thomas Kunze, Roggenburg, DE;
Rainer Stölzer, Neu-Ulm, DE;
Brueninghaus Hydromatik GmbH, Elchingen, DE;
Abstract
The invention relates to a method for the production of a ball jointed connection between a guide shoe ( ) and a cylinder piston ( ) of a piston machine. A spherical cap-shaped recess ( ) is first of all formed on the cylinder piston ( ) and/or the guide shoe ( ), whereby the recess ( ) is undercut in such a way that the spherical cap-shaped recess ( ) comprises a solid angle area (&agr;) of over 180°, and the diameter (D) in the region of the equator plane ( ) is greater than the diameter (d) of the recess ( ). Furthermore, a spherical head ( ) is formed on the corresponding counterpart, that is the guide shoe ( ) and/or the cylinder piston ( ). In accordance with a first version of the invention, the spherical head ( ) is pushed into the spherical cap-shaped recess ( ) in such a way that the edge area ( ) surrounding the spherical cap-shaped recess ( ) is elastically deformed when the spherical head ( ) is pushed in, and the surrounding edge area ( ) grips behind the spherical head ( ). Alternatively, the spherical head ( ) has a flattening ( ) which is plastically deformed after introduction of the spherical head ( ) into the recess ( ).