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:
May. 05, 2015
Filed:
Mar. 24, 2010
Yoko Sugamoto, Osaka, JP;
Masaru Matsui, Kyoto, JP;
Fuminori Sakima, Osaka, JP;
Ko Inagaki, Shiga, JP;
Akira Nakano, Kyoto, JP;
Yoko Sugamoto, Osaka, JP;
Masaru Matsui, Kyoto, JP;
Fuminori Sakima, Osaka, JP;
Ko Inagaki, Shiga, JP;
Akira Nakano, Kyoto, JP;
Abstract
Provided is a reciprocating compressor having a structure in which friction losses between a shaft and a bearing can be reduced without impairing the ability of the bearing to support the shaft. A reciprocating compressor () includes a cylinder (), a piston (), a connecting rod (), a shaft (), and a bearing (). The shaft () has a journal portion () as a portion covered by the bearing (). The journal portion () has a first journal portion () located closer to the connecting rod () with respect to a midpoint M of the journal portion () in a direction parallel to a rotational axis and a second journal portion () located farther from the connecting rod () with respect to the midpoint M. The bearing () has a first sliding portion () for supporting the first journal portion () and a second sliding portion () for supporting the second journal portion (). The first sliding portion () has a first recessed portion () in at least one range selected from a range of 0° to 180° and a range of 270° to 360° in a rotational direction of the shaft () from a reference position.