Pipe joints or couplings – Movable jaw – Wedge bushing
Patent
1980-10-27
1984-08-07
Arola, Dave W.
Pipe joints or couplings
Movable jaw
Wedge bushing
285174, 285342, 285348, 285351, 285354, 267 6428, F16L 2106
Patent
active
044639740
ABSTRACT:
A coupling of the type including a flexible tube, an interiorly threaded nut member apertured to receive the tube, a cooperating exteriorly threaded nipple member, a pair of O-ring seals, and a separate tube-gripping member. The tube-gripping member includes an annular wall portion having an annular O-ring engaging end surface and a plurality of annularly spaced gripping finger portions extending axially from the end of the annular portion opposite from the annular O-ring engaging end surface. The finger portions include end surfaces engaging an interior end wall surface of the nut member, exterior segmental frustoconical surfaces converging in a direction away from the end wall engaging end surfaces engaged with a nipple member interior frustoconical surface and interior tube-engaging surfaces engaging the exterior periphery of the flexible tube and deflecting the engaged portions thereof radially inwardly a predetermined extent determined by the interengagement of a nipple member annular stop surface with a cooperating annular stop surface of the nut member. The pair of O-ring seals provides two peripheral sealing areas in series between an interior surface of the nipple member and an exterior surface of the tube.
REFERENCES:
patent: 2330841 (1943-10-01), Parker
patent: 2727763 (1955-12-01), Ziep
patent: 2862732 (1958-12-01), Guillou
patent: 3173671 (1965-03-01), Broadwell
patent: 3193310 (1965-07-01), Hildner
patent: 3265412 (1966-08-01), Reid et al.
patent: 3674290 (1972-07-01), McNally
patent: 3817561 (1974-06-01), Kay
patent: 3895832 (1975-07-01), Ellis et al.
patent: 4154465 (1979-05-01), Van Meter
patent: 4229025 (1980-10-01), Volgstadt
Arola Dave W.
Maremont Corporation
LandOfFree
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