发明名称 |
Method of casting a permanent core plumbing product |
摘要 |
A plumbing part is made from a permanent core and a body cast around the core. The core is formed of a material which meets the requirements as to the permitted leachability of lead and/or other undesirable materials from the core into water flowing through it. The core material has a melting point preferably at least 200 DEG F. above that of the cast body. The core also has a coefficient of expansion which is equal to or less than that of the material forming the cast body.
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申请公布号 |
US5579823(A) |
申请公布日期 |
1996.12.03 |
申请号 |
US19940350966 |
申请日期 |
1994.12.07 |
申请人 |
MOEN INCORPORATED |
发明人 |
MIKOL, ERWIN F.;PAWLYSZYN, ANDREW G. |
分类号 |
E03C1/04;(IPC1-7):B22D19/00 |
主分类号 |
E03C1/04 |
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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