Pipe joints or couplings – Movable jaw
Patent
1975-08-01
1977-02-01
Larkin, G. V.
Pipe joints or couplings
Movable jaw
F16L 2106
Patent
active
040058832
ABSTRACT:
A tube coupling comprises a collet with resilient arms arranged to co-operate with a cam surface of a surrounding body or sleeve, the cam surface tapering in the axial direction such that, as a tube in the collet is pulled outwardly, frictional pull between the tube and collet causes the collet to move in a direction to tighten the grip on the tube. The arms of the collet are spaced apart radially such that, in the absence of any tube, the collet can be withdrawn outwardly from the sleeve or body. Pushing the collet inwardly into the sleeve or body allows the arms to move radially outwardly and then the tube can be withdrawn. The collet has a flange or the like extending radially outside the sleeve or body and a spring clip is provided between this flange and the sleeve or body to lock the coupling against release of the tube. By using such a clip holding the collet outwardly of the body, the arms of the collet are retained in a position gripping the tube; the clip prevents the collet from being pushed inwardly to release the tube.
REFERENCES:
patent: 3243206 (1966-03-01), Samer
patent: 3454290 (1969-07-01), Tairraz
patent: 3560026 (1971-02-01), Roe
patent: 3653689 (1972-04-01), Sapy et al.
patent: 3684321 (1972-08-01), Hundnausen et al.
patent: 3743326 (1973-07-01), Courtot et al.
patent: 3773360 (1973-11-01), Timbers
patent: 3884513 (1975-05-01), Gassert
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