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, 1989
Filed:
Apr. 24, 1987
Applicant:
Inventors:
Takeshi Murai, Hiroshima, JP;
Norifumi Sagawa, Hiroshima, JP;
Assignees:
Mazda Motor Corporation, Aki, JP;
Sinto Kogio, Ltd., Aki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22C / ; B22C / ;
U.S. Cl.
CPC ...
164125 ; 164138 ;
Abstract
A method of carrying out gravity mold casting, i.e., pouring of molten metal into a mold cavity under the force of gravity. This particular method features the application of a heating insulating coating or an equivalent coating on the surfaces of an area the cross-sectional area of which is larger than that of other sections of the cavity and where the metal flowing speed is slower than in other areas of the mold. The coating is effected before pouring metal into the cavity.