Pipe joints or couplings – Connector for conduit housing electromagnetic line: – Having box and connector
Patent
1974-06-13
1976-05-04
Arola, Dave W.
Pipe joints or couplings
Connector for conduit housing electromagnetic line:
Having box and connector
285424, F16L 304
Patent
active
039542890
ABSTRACT:
Disclosed is a plenum starter piece useful for attaching conduit to a planar plenum. The starter piece includes a body member which is a relatively short cylindrical piece having an external flange adapted to fit against the surface of the plenum and to accommodate fastening means. The outer end of the body member is proportioned for telescoping engagement with a conduit. Telescoped into the flanged end of the body member is an insert having a projecting end which is proportioned to fit through and engage the edges of a hole cut in the plenum.
REFERENCES:
patent: 961685 (1910-06-01), Cosgrove
patent: 2456195 (1948-12-01), Jackson
patent: 3095219 (1963-06-01), Tutty
patent: 3430990 (1969-03-01), Nelson
Arola Dave W.
Cantrell Thomas L.
East Houston Air Conditioning, Inc.
Schley Joseph H.
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