Pipe joints or couplings – With assembly means or feature
Patent
1981-08-06
1985-01-01
Arola, Dave W.
Pipe joints or couplings
With assembly means or feature
285315, 285DIG21, F16L 3500
Patent
active
044913451
ABSTRACT:
A marine conductor coupling is shown in use in a subsea well installation for connecting a blowout preventer stack to the subsea well head with the coupling including a one piece body of annular configuration having a mandrel receiving vertical bore aligned to a vertical through bore, a plurality of latching dogs received in a mating plurality of horizontally disposed dog receiving slots extending through the annular side wall of the body normal to and intersecting the mandrel receiving bore, mounting studs for connecting the body directly to the associated blowout preventer stack component, whereby forces tending to separate the connector body from the well head mandrel are transmitted directly through the one piece body of the connector, an actuating ring disposed about the inclined rear faces of the latching dogs for urging the dogs into latching engagement with the mandrel, a knock-out ring having a lost motion connection to and being suspended below the actuating ring to be raised by dog releasing motion of the actuating ring to knock the dogs out of their latching engagement with the mandrel and a plurality of hydraulic piston and cylinder means wherein the pistons and piston rods are fixed in stationary relationship to the connector body and associated hydraulic cylinders move vertically relative thereto under hydraulic pressuring and are connected directly to the actuator ring to move it selectively between latching dog wedging and release positions with an indicator rod protruding through a housing surrounding the actuator ring to indicate visually exteriorly of the housing the position of the actuating ring interiorly of the housing.
REFERENCES:
patent: 3321217 (1967-05-01), Ahlstone
patent: 3333870 (1965-12-01), Watkins
patent: 3377087 (1968-04-01), Samerdyke et al.
patent: 3450421 (1969-06-01), Harwell
patent: 3675713 (1972-07-01), Watkins
patent: 3719070 (1973-03-01), Hanes
patent: 3779313 (1973-12-01), Regan
patent: 4221408 (1980-09-01), Lochte et al.
Arola Dave W.
Felsman Robert A.
Hughes Tool Company
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