Conduit end fitting with automatic length adjustment

Details Conduit end fitting with automatic length adjustment Conduit end fitting with automatic length adjustment

1998-08-03

2000-07-25

Kincaid, Kristine

Electricity: conductors and insulators

Conduits, cables or conductors

Combined

174 86, 745024, H01R 400

Patent

active

060938927

ABSTRACT:
An improved automatic length-adjusting end fitting for a cable assembly consisting of a conduit and a wire slidably positioned therein reacts to increases in the length of the wire and/or decreases in the length of the conduit by automatically lengthening the conduit to thereby take up a portion of the slack in the wire and return the cable assembly to its desired condition. The fitting includes a hollow housing and a cylindrical core disposed therein for sliding and rotating movement with respect to the housing. The conduit is connected to the end of the core and the wire extends completely through the core and housing. The outer surface of the core has three recesses, each of which forms a series of stair-step notches. Three axially aligned ridges are disposed on the interior surface of the housing engage respective notches, depending on how far the core is inserted into the housing. A coil spring urges the core outwardly from the housing and rotates the core to urge the ridges into engagement with the notches. When the slack in the wire increases beyond the desired amount, the spring forces the core outwardly until the ridges slide off the inner end of their notches and the spring rotates the core to bring the ridges into detented engagement with the next notch inward from that which they previously engaged.

REFERENCES:
patent: 4706744 (1987-11-01), Smith et al.
patent: 4936161 (1990-06-01), Polando
patent: 5295408 (1994-03-01), Nagle et al.
patent: 5477745 (1995-12-01), Boike et al.
patent: 5598743 (1997-02-01), Yasuda
patent: 5746094 (1998-05-01), Medebach et al.
patent: 5813290 (1998-09-01), Takahashi et al.

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