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:
Mar. 06, 2012
Filed:
Sep. 28, 2006
Mihoko Shimoji, Tokyo, JP;
Masayuki Kakuda, Tokyo, JP;
Toshihide Koda, Tokyo, JP;
Shin Sekiya, Tokyo, JP;
Fumihiko Ishizono, Tokyo, JP;
Tomokazu Matsui, Tokyo, JP;
Mihoko Shimoji, Tokyo, JP;
Masayuki Kakuda, Tokyo, JP;
Toshihide Koda, Tokyo, JP;
Shin Sekiya, Tokyo, JP;
Fumihiko Ishizono, Tokyo, JP;
Tomokazu Matsui, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A scroll-type expansion machine includes an expansion mechanism including an orbiting scroll and a first fixed scroll for expanding a refrigerant and recovering a power, a sub-expansion mechanism including an orbiting scroll and a second fixed scroll for compressing the refrigerant by the power recovered by the expansion mechanism, and a seal ring disposed in at least one of an outer circumference portion of the sub-compression mechanism or an outer circumference portion of the expansion mechanism. An oil flow path is opened in an upper space of a hermetic vessel to make the upper space and a lower space at a compressed pressure of the sub-compression mechanism, and the lower space is provided with an oil pipe for communicating with the main compressor.