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. 06, 2007
Filed:
Dec. 14, 2005
Shoichiro Kitaichi, Fuji, JP;
Norihisa Watanabe, Fuji, JP;
Takeshi Tominaga, Fuji, JP;
Kazu Takashima, Fuji, JP;
Isao Kawabe, Fuji, JP;
Masayuki Suzuki, Fuji, JP;
Shoichiro Kitaichi, Fuji, JP;
Norihisa Watanabe, Fuji, JP;
Takeshi Tominaga, Fuji, JP;
Kazu Takashima, Fuji, JP;
Isao Kawabe, Fuji, JP;
Masayuki Suzuki, Fuji, JP;
Toshiba Carrier Corporation, Tokyo, JP;
Abstract
A vane of a first cylinder is compressed and urged by a spring member. A vane of a second cylinder is compressed and urged corresponding to a differential pressure between an intra-casing pressure guided into a vane chamber and a suction pressure or discharge pressure guided to the cylinder chamber. A pressure shift mechanism which guides the suction pressure or discharge pressure has a branch pipe having a one end connected to a high pressure side of the refrigeration cycle, an other end connected to a suction pipe, and a first on-off valve in a midway portion, and a second on-off valve or a check valve which is provided in the suction pipe on a side upstream of a connection portion of the branch pipe and on a side downstream of an oil returning opening in an accumulator.