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:
Jan. 23, 2001
Filed:
Jan. 26, 1999
Applicant:
Inventors:
Jiro Iizuka, Takasaki, JP;
Akiyoshi Higashiyama, Gunma, JP;
Assignee:
Sanden Corporation, Gunma, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 4/900 ;
U.S. Cl.
CPC ...
F04B 4/900 ;
Abstract
In a scroll compressor provided with a fixed scroll member (,) and a movable scroll member (,) which define a plurality of compression spaces (,) therebetween in cooperation with each other, a hole (,) is formed to the fixed scroll member to be communicable with adjacent ones of the compression spaces. The adjacent compression spaces are different from each other in pressure when the scroll compressor is driven. A piston valve (,) is disposed in the hole and controls communication between the adjacent compression space through the hole. The compression spaces are movable with volumes reduced by movement of the movable scroll member.