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:
Nov. 14, 2000
Filed:
Mar. 24, 1998
Unisia Jecs Corporation, Atsugi, JP;
Abstract
An outer joint part includes a cup-shaped body portion having a rotation axis. The cup-shaped body portion has an inner circumferential surface having a plurality of circumferentially spaced inner grooves, and an outer circumferential surface having a plurality of outer grooves circumferentially alternately disposed relative to the inner grooves. The wall thickness of the cup-shaped body portion at the outer grooves is smaller than the wall thickness of the cup-shaped body portion in the areas between the outer grooves. A preform formed into the outer joint part includes a bowl-shaped preform portion having a center axis and inner and outer circumferential surfaces similar in shape to each other. The inner circumferential surface defines inner recesses circumferentially spaced from each other. The outer circumferential surface defines outer recesses circumferentially alternately disposed relative to the inner recesses.