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:
Aug. 28, 1984
Filed:
Mar. 26, 1982
Applicant:
Inventors:
Gerd Trinkl, Borken, DE;
Helmut Schopp, Borken, DE;
Assignee:
Foseco International Limited, Birmingham, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22C / ;
U.S. Cl.
CPC ...
164360 ; 164359 ;
Abstract
A blind feeder sleeve for use in the casting of metals comprises a sleeve body and a cover having a Williams core, and optionally an opening for ventilation, the Williams core being formed integrally with the feeder sleeve and comprising a rib extending across the inner surface of the cover and projecting downwardly from that surface in a wedge like shape. Preferably the rib is formed integrally with the inner surface of the cover at each end of the rib, and when the feeder sleeve is circular in cross-section the rib preferably extends across a diameter of the sleeve.