Pipe joints or couplings – With assembly means or feature – Molded joint facilitator
Patent
1997-07-18
1999-06-29
Nicholson, Eric K.
Pipe joints or couplings
With assembly means or feature
Molded joint facilitator
285903, 285423, 2851392, 2851491, 2851511, 174 65SS, 138121, 138134, F16L 4100, H02G 1520
Patent
active
059157364
ABSTRACT:
A one piece integrally formed liquid tight connection or "whip" assembly for electrically interconnecting electrical appliances, such as air conditioning units, hot tubs, swimming pools and outdoor lighting fixtures, to one another and/or to a power source junction box or control box. The connection assembly includes a flexible tubular conduit, preferably constructed from a composite of full rigid PVC and flexible plasticized PVC, having first and second end portions and an outer surface with a plurality of surface irregularities. A pair of end fittings are integrally attached to the first and second end portions of the tubular conduit, respectively, using either a solvent welding or temperature welding technique. When using the solvent technique, the plurality of surface irregularities operate to hold additional localized amounts of solvent which further reacts with the plastic in the end fittings and conduit to yield a superior weld. Each of end fitting also includes an external annular seal ring for engaging the electrical devices. A plurality of conductors extend through the tubular conduit and end fittings which provide electrical communication between the electrical devices.
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Bauer Claude J.
Marik Gregory C.
Nicholson Eric K.
Thomas & Betts International Inc.
Welborn Brian S.
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