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:
Aug. 31, 2010
Filed:
Aug. 05, 2005
Katsumi Sakitani, Osaka, JP;
Michio Moriwaki, Osaka, JP;
Masakazu Okamoto, Osaka, JP;
Eiji Kumakura, Osaka, JP;
Yume Inokuchi, Osaka, JP;
Tetsuya Okamoto, Osaka, JP;
Yoshinari Sasaki, Osaka, JP;
Katsumi Sakitani, Osaka, JP;
Michio Moriwaki, Osaka, JP;
Masakazu Okamoto, Osaka, JP;
Eiji Kumakura, Osaka, JP;
Yume Inokuchi, Osaka, JP;
Tetsuya Okamoto, Osaka, JP;
Yoshinari Sasaki, Osaka, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
A positive displacement expander includes a volume change mechanism () for changing the volume of a first fluid chamber () of an expansion mechanism (). The expansion mechanism () includes a first rotary mechanism () and a second rotary mechanism () each having a cylinder () containing a rotor (). The first fluid chamber () of the first rotary mechanism () and a second fluid chamber () of the second rotary mechanism () are in fluid communication with each other to form an actuation chamber (). Meanwhile, the first fluid chamber () of the first rotary mechanism () is smaller than the second fluid chamber () of the second rotary mechanism (). The volume change mechanism () includes an auxiliary chamber () fluidly communicating with the first fluid chamber () and an auxiliary piston () for changing the volume of the auxiliary chamber (). The auxiliary chamber () is in fluid communication with the first fluid chamber () of the first rotary mechanism ().