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:
Apr. 04, 2006
Filed:
Sep. 08, 2003
Takeshi Tsuchiya, Chiyoda, JP;
Takao Mizuno, Shizuoka, JP;
Mutsunori Matsunaga, Shizuoka, JP;
Masaru Ohtahara, Shizuoka, JP;
Syunsuke Yasunori, Shizuoka, JP;
Isao Hayase, Tsuchiura, JP;
Isamu Tsubono, Ushiku, JP;
Kazuyuki Fujimura, Chiyoda, JP;
Takeshi Tsuchiya, Chiyoda, JP;
Takao Mizuno, Shizuoka, JP;
Mutsunori Matsunaga, Shizuoka, JP;
Masaru Ohtahara, Shizuoka, JP;
Syunsuke Yasunori, Shizuoka, JP;
Isao Hayase, Tsuchiura, JP;
Isamu Tsubono, Ushiku, JP;
Kazuyuki Fujimura, Chiyoda, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A second frame is arranged between a first frame and an orbiting scroll, and a central space and an outer peripheral space are sealed off by a seal portion, which is formed between an end surface of a shaft support of the orbiting scroll and the second frame. Also, a balance weight is arranged in a space between an underside of the second frame and the first frame. Thereby, most of an oil having lubricated respective shaft supports flows into the space below the second frame, and the oil accumulated in the space is discharged through an oil scavenge pipe into an oil reservoir in a lower portion of a closed vessel. Also, since the balance weight can be assembled from a side of the orbiting scroll in a state, in which the second frame is removed, it is possible to mount the balance weight close to the orbiting scroll.