Pipe joints or couplings – With fluid pressure seal – With expansible chamber means
Patent
1998-04-16
2000-05-02
Arola, Dave W.
Pipe joints or couplings
With fluid pressure seal
With expansible chamber means
285308, 285323, F16L 1700
Patent
active
060563281
ABSTRACT:
A coupler connects a gas leakage testing system to a pipe forming a part of a high pressure fluid conduit system, and a stationary case connected to the gas leakage testing system, a movable member movable in the inner space of the stationary case in an axial direction thereof, a coil spring urging the movable member in the axial direction, a split clamper arranged around the outer surface of the pipe and an axial force-to-radial force converter provided between the movable member and the split clamper form in combination the coupler; when the coupler is attached to the pipe, the coil spring urges the movable member in the axial direction, and the axial force-to-radial force converter inwardly exerts a radial force on the split clamper so as to grasp the pipe; since the split clamper is held in surface contact with the pipe, the pipe is never deformed due to concentration of a stress.
REFERENCES:
patent: 2819733 (1958-01-01), Maisch
patent: 3779587 (1973-12-01), Racine
patent: 3841672 (1974-10-01), Schultz et al.
patent: 3953058 (1976-04-01), Soblesky
patent: 4326407 (1982-04-01), VanMeter
patent: 5005877 (1991-04-01), Hayman
Arola Dave W.
Yamaha Corporation
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