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:
Apr. 02, 1985
Filed:
Mar. 30, 1983
Akio Numazawa, Nagoya, JP;
Ichio Sakai, Toyota, JP;
Tadanobu Kumagai, Toyota, JP;
Seiichi Nishikawa, Toyota, JP;
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JP;
Abstract
An improvement in a double Cardan universal joint having a pair of spiders connected by a ring-shaped coupling member, a pair of yoke members angularly movably connected with each other by the spiders, a centering assembly for aligning the yoke members with each other and defining a reservoir for grease within a bridge forming a part of one of the yoke members and a breather hole formed in the bridge for making the reservoir communicate with the atmosphere. The improvement comprises a valve of elastic material inserted in the breather hole and capable of elastically blockading the communication of the reservoir with the atmosphere when internal pressure of the reservoir is below a predetermined amount and being elastically deformed to make the reservoir communicate with the atmosphere when the internal pressure reaches or exceeds the predetermined amount.