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. 22, 1995
Filed:
Nov. 05, 1993
Applicant:
Inventors:
Gregory N Colvin, Muskegon, MI (US);
Leonard L Ervin, Whitehall, MI (US);
Robert F Johnson, Spring Lake, MI (US);
Assignee:
Howmet Corporation, Greenwich, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22C / ; B22C / ; B22D / ;
U.S. Cl.
CPC ...
164254 ; 249108 ; 249109 ; 249115 ; 249135 ;
Abstract
For a steel mold, one or more titanium melt inlet-forming members are provided for cooperating with the steel mold members to form an melt ingate that communicates to the mold cavity for supplying the melt thereto in a manner to avoid harmful iron contamination of the melt during casting. The mold body-to-mold cavity volume ratio is controlled between 10:1 to 0.5:1 to minimize casting surface defects and mold wear/damage.