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:
May. 14, 2019
Filed:
Feb. 19, 2015
Applicant:
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Inventors:
Assignee:
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
B22C 9/08 (2006.01); B22D 18/04 (2006.01); B22D 18/08 (2006.01);
U.S. Cl.
CPC ...
B22C 9/082 (2013.01); B22C 9/08 (2013.01); B22D 18/04 (2013.01); B22D 18/08 (2013.01);
Abstract
A sprue for a low-pressure casting device includes a stalk connection part to be connected to a stalk, a molten metal reservoir and a cavity connection part to be connected to the cavity. The shape of the molten metal reservoir is such that the perimeter of the cross section perpendicular to the flow direction of molten metal gradually increases toward the cavity connection part while the area of the cross section remains constant.