Electricity: conductors and insulators – Conduits – cables or conductors – Combined
Patent
1994-11-09
1997-08-05
Kincaid, Kristine L.
Electricity: conductors and insulators
Conduits, cables or conductors
Combined
174 88R, 174 84S, 285 94, 285404, H01R 400
Patent
active
056545266
ABSTRACT:
A coupling apparatus and method for joining together lengths of electrical conduit in a conduit system. The coupling apparatus includes a resealable port that permits lubricant to be introduced into the coupling apparatus to facilitate wire pulling through a conduit system and to reduce strain on the insulation material of the wire. The coupling apparatus is a generally T-shaped tubular structure and includes a pair of axially-aligned conduit receiving openings which define an inlet and an outlet, respectively. The inlet and outlet openings are spaced a distance apart from one another by a central chamber. The central chamber has an inner tubular diameter substantially equal to the inner tubular diameter of the conduit to be joined in order to provide a smooth transition for wire being pulled through the coupling apparatus. The resealable lubrication port is defined by a vertically oriented tubular leg portion and removable threaded plug which are joined to a middle section of the central chamber.
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Red Dot Ready Reference Guide, 1994, pp. 1,3, 13 and 22.
Kincaid Kristine L.
Nguyen Chau N.
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