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. 20, 2012
Filed:
Nov. 29, 2007
Hiroshi Yamazaki, Aichi, JP;
Makoto Takeuchi, Aichi, JP;
Tetsuzou Ukai, Aichi, JP;
Kazuhide Watanabe, Aichi, JP;
Tomohisa Moro, Aichi, JP;
Katsuhiro Fujita, Aichi, JP;
Takayuki Kuwahara, Aichi, JP;
Takamitsu Himeno, Aichi, JP;
Hiroshi Yamazaki, Aichi, JP;
Makoto Takeuchi, Aichi, JP;
Tetsuzou Ukai, Aichi, JP;
Kazuhide Watanabe, Aichi, JP;
Tomohisa Moro, Aichi, JP;
Katsuhiro Fujita, Aichi, JP;
Takayuki Kuwahara, Aichi, JP;
Takamitsu Himeno, Aichi, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
Provided is a scroll fluid machine that, by using a crankshaft manufactured by cold forging and a needle bearing, can sufficiently exhibit the performance of a variable circling radius mechanism, can provide a sufficient reliability on a bearing portion of the crankshaft, and can be manufactured inexpensively. For this purpose, in a crankshaftused for a driving force transmission system, a reinforced shaft unitand a circular column-like large diameter unitare formed at an end of a rotating shaft, a material is produced by a cold forging process so that an eccentric shaftprojects from the circular column-like large diameter unit, the circular column-like large diameter unitis rotatably coupled to a housingvia a needle bearing, and the variable circling radius mechanism is stably operated with rigidity increased by the reinforced shaft unit