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:
Jul. 15, 1986
Filed:
Sep. 11, 1985
Applicant:
Inventor:
Edward S Blain, Rockford, IL (US);
Assignee:
Sundstrand Corporation, Rockford, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
F01C / ; F01C / ;
U.S. Cl.
CPC ...
418 55 ; 418 57 ;
Abstract
Skating movement of seals in a positive displacement scroll apparatus having two scrolls which rotate with each other and additionally undergo relative orbiting movement, is avoided in a pressure balancing cavity construction by providing a chamber defining element which is coupled by bolts to the scroll. The seals thus rotate with the scrolls and move only across their short dimension as the scrolls undergo relative orbiting movement.