发明名称 |
Collapsible duct coupling |
摘要 |
Fiberglass reinforced plastic duct exhaust systems including sections of the duct system joined together by collapsible collar plastic joints having low melting points which collapse or drop-out of the system when exposed to high temperatures.
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申请公布号 |
US5449320(A) |
申请公布日期 |
1995.09.12 |
申请号 |
US19930124710 |
申请日期 |
1993.09.24 |
申请人 |
SHEA, LAWRENCE E. |
发明人 |
SHEA, LAWRENCE E. |
分类号 |
A62C4/00;B08B15/00;F16L9/12;F16L11/04;(IPC1-7):F24F7/06 |
主分类号 |
A62C4/00 |
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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