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:
Mar. 10, 1987
Filed:
May. 08, 1985
Applicant:
Inventor:
Masao Shiibayashi, Shimizu, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04C / ; F04C / ;
U.S. Cl.
CPC ...
418 55 ; 418 97 ;
Abstract
A scroll fluid machine has a stationary scroll member and an orbiting scroll member each having an end plate and a spiral wrap. At least one oil injection port and at least one oil relieving passage is formed in the end plate of either one of the scroll members. The oil injection port opens into at least one of the enclosed spaces, while the oil relieving passage provides an intermittent communication between that enclosed space and a space or chamber of an intermediate pressure formed by the scroll members which includes a suction chamber.