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:
Oct. 23, 2001
Filed:
Jun. 17, 1999
Peter Schwärzler, Glattbach, DE;
GKN Lobro GmbH, , DE;
Abstract
A constant velocity universal ball joint of the fixed joint type, having an outer joint part with curved outer ball tracks extending longitudinally inside, having an inner joint part with curved inner ball tracks extending longitudinally outside, having a plurality of torque transmitting balls which are each guided in outer and inner ball tracks associated with one another, having a ball cage with a plurality of cage windows respectively receiving the balls, wherein the tangential planes at the points of contact of the balls with the outer and inner ball tracks—which points of contact are required for torque transmitting purposes—define a spatial control angle 2K and wherein the superposition of the momentary local relative speeds between the balls and the outer and the inner ball tracks in the points of contact defines the rolling error &Dgr;v, with the tracks being designed in such a way that when the joint is articulated, mininum control angles K coincide with regions of minimum rolling errors &Dgr;v.