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:
Oct. 15, 2019
Filed:
Mar. 04, 2015
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Tatsuya Masuta, Kanagawa, JP;
Shunsuke Ota, Kanagawa, JP;
NISSAN MOTOR CO., LTD., Yokohama-shi, JP;
Abstract
Molten metal M is raised to the vicinity of a gateof a cavityC by increasing the pressure in a holding furnacewith gas, and thereafter the cavityC is filled with the molten metal M by decreasing the pressure in the cavityC by suction and further increasing the pressure in the holding furnace. Thereafter, the decompression of the cavityC is stopped after a preset filling time, and the compression of the holding furnaceis stopped when solidification of the molten metal M is completed. In this way, the suction is minimized, and it becomes possible to employ a simple decompression part. A reduction in equipment cost and production cost is thereby achieved, and a reduction in casting cycle time is also achieved.