发明名称 |
GAS VENTING DEVICE FOR MOLDING OPERATIONS |
摘要 |
A gas venting device for molding operations is disclosed having a valve for closing off a gas evacuation system from a mold when the mold cavity is filled with melt. A positive drive mechanism is provided for closing the valve, and a mechanism is provided for allowing the valve body to close more rapidly by action of the melt itself against the valve body in the event the melt advances more rapidly through the gas vent passage than expected. |
申请公布号 |
CA1294753(C) |
申请公布日期 |
1992.01.28 |
申请号 |
CA19870546463 |
申请日期 |
1987.09.09 |
申请人 |
OZEKI, MAMORU |
发明人 |
OZEKI, MAMORU;TSUDA, AKIHICO |
分类号 |
B22D17/14;B22D17/20 |
主分类号 |
B22D17/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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