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. 01, 2007
Filed:
Apr. 22, 2004
Tetsuhiko Fukanuma, Kariya, JP;
Masahiro Kawaguchi, Kariya, JP;
Yasuharu Odachi, Kariya, JP;
Masao Iguchi, Kariya, JP;
Yoichi Takashima, Kariya, JP;
Kazuhito Miyagawa, Kariya, JP;
Tetsuhiko Fukanuma, Kariya, JP;
Masahiro Kawaguchi, Kariya, JP;
Yasuharu Odachi, Kariya, JP;
Masao Iguchi, Kariya, JP;
Yoichi Takashima, Kariya, JP;
Kazuhito Miyagawa, Kariya, JP;
Denso Corporation, , JP;
Abstract
A variable displacement compressor for efficiently cooling and lubricating seals arranged on a rotary shaft. The seals are arranged at end portions of the rotary shaft that project from a housing of the compressor. A first lubrication chamber is defined by a first seal in the housing around the front end portion of the rotary shaft. A second lubrication chamber is defined by a second seal in the housing around the rear end portion of the rotary shaft. A shaft passage extends through the rotary shaft to connect the first and second lubrication chambers. Refrigerant gas including lubricating oil flows from a crank chamber to a suction chamber via the first lubrication chamber, the shaft passage, and the second lubrication chamber. This efficiently cools and lubricates the seals.