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. 26, 1985
Filed:
Mar. 21, 1983
Hideo Hamano, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Abstract
A housing assembly for a power transmission unit comprises a casing provided at the open end thereof with an upright peripheral seating face and a cover member fitted at its upright peripheral seating face to the upright peripheral seating face of the casing in a fluid-tight manner. The cover member is provided at the head portion thereof with a vertical vent hole and is integrally formed at the inner wall thereof with a laterally slanted protrusion fitted to the upper corner of the casing seating face in a fluid-tight manner to form an air passage communicating the vent hole into the casing, and an air breather plug assembly is coupled over the vent hole. The air passage is designed to be wider at its lower portion and to be narrower towards its upper portion. An air chamber is provided between the upper end of the air passage and the vent hole.