发明名称 |
Inflatable closing plug for pipes and method of manufacturing same |
摘要 |
An inflatable closing plug for pipes and a method of manufacturing same. The plug includes a unitary balloon-like element of elastic material, and a wire located on and adhered to the outer surface of the balloon-like element. The wire extends from the first end of the balloon-like element to the second end of the balloon-like element, and has a coefficient of elasticity which is less than the coefficient of elasticity of the elastic material of the balloon-like element. The plug can expand freely in the radial direction and is bounded in axial sense by the longitudinal wire or wires, in order to permit a sufficient closing pressure to be achieved. To manufacture the plug the balloon-like element is inflated to a predetermined pressure. At least one wire is placed on the outer surface of the inflated balloon-like element between its two ends, and adhered thereto.
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申请公布号 |
US5477886(A) |
申请公布日期 |
1995.12.26 |
申请号 |
US19940186518 |
申请日期 |
1994.01.26 |
申请人 |
J. VAN BEUGEN BEHEER B.V. |
发明人 |
VAN BEUGEN, JOCHIM;GOVAERT, FREDERIK |
分类号 |
B29C53/60;B29C63/26;B29D22/00;B29D22/02;F16L55/132;F16L55/134;(IPC1-7):F16L55/12;B65H54/64 |
主分类号 |
B29C53/60 |
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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