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:
May. 23, 2000
Filed:
Feb. 08, 1999
Naoyuki Kosuge, Nagoya, JP;
Tomoyuki Hara, Yokohama, JP;
Toshiyuki Yamaguchi, Yokohama, JP;
Shinzou Gotou, Yokohama, JP;
Aichi Kikai Kogyo Kabushiki Kaisha, Nagoya, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
In an air breather structure in a transmission, a partition wall 2 defining an air breather chamber S extends substantially vertically downward in a curved configuration at a distance from a corner portion 1a of a transmission case to increase volume of the air breather chamber S. An oil entrance 4 is formed in an upper portion of the partition wall 2. An oil exit 5 wider than the oil entrance 4 is formed in a lower end portion of the partition wall 2 for discharging oil which enters the air breather chamber S. The oil exit 5 is formed between a lower end of the partition wall 2 and an oil-returning rib 6 projecting from the transmission case for preventing the oil from flowing upward into the air breather chamber S. With this construction, the air breather structure becomes free from 'blow of oil'.