发明名称 |
Check valve with a spiral coil seal |
摘要 |
A seal for a check valve for a metal molding machine. The seal is provided by the combination of a peripheral groove in an outer surface of the check valve and a helically wound core in the groove. The helically wound coil is expandable into sealing engagement with a cylindrical wall of the molding machine. The helically wound coil may be movable laterally in the groove between a melt channel open position and a melt channel closed position to open or seal the melt channel.
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申请公布号 |
US7357172(B2) |
申请公布日期 |
2008.04.15 |
申请号 |
US20040876584 |
申请日期 |
2004.06.28 |
申请人 |
HUSKY INJECTION MOLDING SYSTEMS LTD. |
发明人 |
TENG ALEX;GODWIN HAROLD;ILMONEN ROBERT |
分类号 |
B22D17/08;B22D17/20 |
主分类号 |
B22D17/08 |
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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