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:
Apr. 21, 1992
Filed:
Oct. 29, 1990
Applicant:
Inventor:
Robert E Utter, Onalaska, WI (US);
Assignee:
American Standard Inc., New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
F01C / ; F01C / ;
U.S. Cl.
CPC ...
62498 ; 418 554 ; 418142 ; 277204 ;
Abstract
In a scroll apparatus having interleaving scroll wraps secured to end plates rotating about parallel, non-concentric axes to produce a relative orbital motion, a modified tip seal groove in the tip surface of at least one of the scroll wraps. In the preferred embodiment, the tip seal element is of constant cross-sectional width along the scroll wrap, with the groove in the scroll wrap tip having an inner portion adjacent the discharge port and an outer portion. The inner portion of the groove is of greater cross-sectional width than the outer portion of the groove.