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:
Oct. 09, 1984
Filed:
Apr. 11, 1980
Applicant:
Inventor:
Eiji Sato, Ibaraki, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04C / ;
U.S. Cl.
CPC ...
418 55 ; 418 57 ;
Abstract
In a scroll fluid apparatus, a gas of an intermediate pressure level is drawn from the operating chambers in the process of compressing a fluid or expanding the same and applied to the entire area of the back of one of a pair of scroll members so as to force one scroll member tightly against the other scroll member whereby an axial seal can be provided to the pair of scroll members.