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:
Jun. 05, 2012
Filed:
Oct. 29, 2008
Masanobu Wada, Osaka, JP;
Yu Shiotani, Osaka, JP;
Shingo Oyagi, Osaka, JP;
Yasufumi Takahashi, Osaka, JP;
Takeshi Ogata, Osaka, JP;
Masanobu Wada, Osaka, JP;
Yu Shiotani, Osaka, JP;
Shingo Oyagi, Osaka, JP;
Yasufumi Takahashi, Osaka, JP;
Takeshi Ogata, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An expander-compressor unit () includes a closed casing (), a compression mechanism (), an expansion mechanism (), a shaft (), and an oil pump (). The shaft () includes an upper shaft () provided with an upper eccentric portion () for the compression mechanism (), and a lower shaft () provided with lower eccentric portions (and) for the expansion mechanism () and an intermediate eccentric portion () for the oil pump (). The expansion mechanism () has an upper bearing member () for supporting a supported portion () of the lower shaft () located immediately above the lower eccentric portion (). The intermediate eccentric portion () has a diameter equal to or less than that of the supported portion ().