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:
Dec. 06, 1977
Filed:
Jul. 19, 1976
Applicant:
Inventor:
Claude H Watts, Mayfield Heights, OH (US);
Assignee:
Precision Metalsmiths, Inc., Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22C / ;
U.S. Cl.
CPC ...
164 45 ; 164244 ; 164246 ;
Abstract
For use in the lost pattern process of investment casting, an improved pattern assembly of the type having a pattern supporting center tree or sprue member including a rigid tube surrounded by a sleeve made of a flexible material, characterized by longitudinally spaced, thin bands of pattern material extending around the sleeve at those locations where the patterns are to be attached.