Pipe joints or couplings – Connector for conduit housing electromagnetic line: – Having box and connector
Patent
1974-10-23
1976-08-17
Arola, Dave W.
Pipe joints or couplings
Connector for conduit housing electromagnetic line:
Having box and connector
156 86, 264230, 285331, 285371, 285381, 285423, 285DIG10, 285DIG16, F16L 4100
Patent
active
039750396
ABSTRACT:
A method of recovering a heat-recoverable article onto a hollow substrate, the heat-recoverable article and the substrate each having at least one open end. The method comprises positioning the substrate between a rigid member and the heat-recoverable article, the substrate being positioned in the direction of recovery of the heat-recoverable article and at least part of the rigid member being in contact with the substrate. The heat-recoverable article is then treated to cause recovery thereof. The hollow substrates to which the method of the invention is applied are those which would be distorted if a heat-recoverable article were recovered onto them in the absence of a rigid member. Advantageously, the heat-recoverable article is a heat-shrinkable sleeve and in this case the rigid member is positioned inside the hollow substrate. The method is particularly useful for joining two substrates such as plastic pipes and in this case the heat-shrinkable sleeve may be combined with the rigid member in the form of a coupling device. A fusible material, a mastic or an adhesive may be used to provide a seal between the recovered heat-recoverable member and the substrate(s).
REFERENCES:
patent: 3315986 (1967-04-01), Quick
patent: 3423518 (1969-01-01), Weagant
patent: 3513429 (1970-05-01), Helsop
patent: 3539411 (1970-10-01), Heslop et al.
patent: 3565116 (1971-02-01), Gabin
patent: 3567259 (1971-03-01), Benson et al.
patent: 3695643 (1972-10-01), Schmunk
patent: 3700268 (1972-10-01), Nielsen
Penneck Richard J.
Wood Alexander M.
Arola Dave W.
Raychem Corporation
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