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:
Feb. 14, 1995
Filed:
Jun. 06, 1994
Applicant:
Inventor:
Hubert Richardson, Jr, Brooklyn, MI (US);
Assignee:
Tecumseh Products Company, Tecumseh, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01C / ;
U.S. Cl.
CPC ...
418 552 ; 2988802 ; 164122 ; 164137 ; 164348 ;
Abstract
A process of casting a scroll member for a scroll compressor including forming the scroll wrap member portions of equal height. Unequal cooling of the scroll wrap when formed causes the hardness of the wrap to vary from radially outside to radially inside. The radially outside portions of the scroll wrap are formed harder therefore reducing wear-out of the scroll member while the radially inside portions are formed softer, thereby permitting quicker run-in of the scroll set during initial startup of the scroll compressor.