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. 09, 1996
Filed:
Dec. 21, 1994
Applicant:
Inventors:
Jean-Luc M Caillat, Dayton, OH (US);
Roger C Weatherston, Dayton, OH (US);
James W Bush, Sidney, OH (US);
Assignee:
Copeland Corporation, Sidney, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04C / ;
U.S. Cl.
CPC ...
418 555 ; 418 57 ;
Abstract
A scroll-type compressor which is particularly suited for use as a refrigerant compressor has a biasing chamber for pressure biasing the non-orbiting scroll to augment tip sealing. The biasing chamber communicates with the fluid pockets of the compressor through a biasing passage extending through the end plate of the non-orbiting scroll. The biasing passage is in fluid communication with the innermost fluid pocket during only a portion of each of the cycles of orbiting motion and in fluid communication with an intermediate fluid pocket during another portion of the cycles orbiting motion.