发明名称 |
Method of and device for forming vacuum sealed molds |
摘要 |
A method of and device for forming vacuum sealed molds, in which suction is applied to a charging material charged into a flask to remove the charging material adjacent the top of a sprue or a communicating passage thereby forming a cup-shaped pouring basin for the sprue or a funnel-shaped concave for the passage in a mold, thereafter a shielding film is applied over the upper surface of the flask, and a suction is applied to the charging material within the flask.
|
申请公布号 |
US4009747(A) |
申请公布日期 |
1977.03.01 |
申请号 |
US19750557452 |
申请日期 |
1975.03.12 |
申请人 |
SINTOKOGIO, LTD. |
发明人 |
MIURA, TAKASHI;TERADA, HIDETO;INOUE, TAKAO;KUBOTA, HIRONOBU |
分类号 |
B22C9/03;(IPC1-7):B22C5/12 |
主分类号 |
B22C9/03 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|