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:
Sep. 01, 1998
Filed:
Nov. 21, 1996
Applicant:
Inventors:
Assignee:
Copeland Corporation, Sidney, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01C / ; F01C / ; F01C / ;
U.S. Cl.
CPC ...
418 551 ; 418 554 ; 418270 ;
Abstract
A scroll compressor includes a discharge valve assembly for blocking compressed refrigerant flow from the discharge chamber through the scroll members. This blocking of flow results in the elimination of reverse rotation at shut down. The discharge valve assembly includes a leakage path which allows a limited amount of refrigerant flow past the discharge valve to eliminate the forming of a vacuum during powered reverse rotation. In one embodiment, a valve located in the leakage path provides a time delay to optimize the performance of the discharge valve assembly.