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. 31, 1993
Filed:
Dec. 03, 1992
Applicant:
Inventors:
Akihiko Takahashi, Ryugasaki, JP;
Hitoshi Yasuda, Tsukuba, JP;
Assignee:
Sumitomo Chemical Company, Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22D / ; B22D / ;
U.S. Cl.
CPC ...
164459 ; 164490 ;
Abstract
Aluminum bar having a helical contour continuously cast using a mold comprising a heating unit and a cooling unit which have a groove or protrusion helically cut on the inner wall surface, and casting aluminum while conducting rotation and withdrawing in conformity with the slope of the helix.