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. 29, 2007
Filed:
Feb. 03, 2004
Kazuya Sato, Ora-gun, JP;
Kenzo Matsumoto, Ora-gun, JP;
Kentaro Yamaguchi, Ora-gun, JP;
Akifumi Tomiuka, Isesaki, JP;
Hiromasa Aoki, Tatebayashi, JP;
Midori Futakawame, Ora-gun, JP;
Kazuya Sato, Ora-gun, JP;
Kenzo Matsumoto, Ora-gun, JP;
Kentaro Yamaguchi, Ora-gun, JP;
Akifumi Tomiuka, Isesaki, JP;
Hiromasa Aoki, Tatebayashi, JP;
Midori Futakawame, Ora-gun, JP;
Sanyo Electric Co., Ltd., Moriguchi-shi, JP;
Abstract
A so-called internal intermediate pressure multistage compression type rotary compressor makes it possible to prevent the pressure inside a roller from inconveniently increasing and also to permit smooth and reliable supply of oil into a cylinder of a second rotary compressing element by a relatively simple construction. A lubrication groove for providing communication between an oil bore and a low-pressure chamber in the cylinder is formed in a surface of an intermediate partitioner that is adjacent to the cylinder of the second rotary compressing element. Furthermore, a through bore for providing communication between a hermetically sealed vessel and the inside of the roller is formed in the intermediate partitioner.