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. 15, 2011
Filed:
Aug. 06, 2007
Masaru Matsui, Kyoto, JP;
Hiroshi Hasegawa, Osaka, JP;
Atsuo Okaichi, Osaka, JP;
Takeshi Ogata, Osaka, JP;
Masanobu Wada, Osaka, JP;
Yasufumi Takahashi, Osaka, JP;
Masaru Matsui, Kyoto, JP;
Hiroshi Hasegawa, Osaka, JP;
Atsuo Okaichi, Osaka, JP;
Takeshi Ogata, Osaka, JP;
Masanobu Wada, Osaka, JP;
Yasufumi Takahashi, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A multi-stage rotary-type fluid machine may be configured as what is called a two-stage rotary expander, in which a refrigerant expands in an expansion chamber having a first discharge side space () of a first cylinder (), a second suction side space () of a second cylinder (), and a communication hole () for allowing communication between the two spaces (). The first cylinder () and the second cylinder () are partitioned by an intermediate plate (). The communication hole () is formed so as to penetrate through the intermediate plate (). The opening shape and location of the communication hole () are set so that direct blow-through of the refrigerant from a suction port () to a discharge port () cannot occur at any rotation angle of a shaft ().