Pipe joints or couplings – End to side or plate – Swivel with lateral port to annular sleeve
Patent
1984-11-01
1986-04-29
Husar, Cornelius J.
Pipe joints or couplings
End to side or plate
Swivel with lateral port to annular sleeve
285321, 175214, 277 59, F16L 2700, E21B 1718
Patent
active
045852561
ABSTRACT:
A side feed water swivel for a hollow drill string includes a spindle one end of which is adapted to fit a socket on a rotary table of a drill rig, and the other end, to connect to hollow drill rods, and, intermediate its ends, a receiving section having upper and lower smooth cylindrical bearing surfaces and between them water-receiving passages extending to an axial passage blind at its upper end, and a housing embracing the bearing surfaces and defining between them a water-receiving chamber. The housing has an inlet port extending through a wall to communicate with the chamber substantially midway axially of the housing. The housing has upper and lower bearing surfaces complementary to the spindle bearing surfaces. O-ring channels in the housing bearing surfaces are positioned axially asymmetrically with respect to the center line of the housing. The housing is so made that it can be mounted on the spindle in either of two orientations 180.degree. apart so that when one pair of sealing surfaces is worn, the housing can be removed from the spindle, inverted and remounted to permit the O-rings in the channels to engage a new set of sealing surfaces.
REFERENCES:
patent: 1985012 (1934-12-01), Boehm
patent: 2345884 (1944-04-01), Powers et al.
patent: 2506111 (1950-05-01), Saint
patent: 3164420 (1965-01-01), Cramer
patent: 3227230 (1966-01-01), Lagerstrom
patent: 3259403 (1966-07-01), Hjalsten et al.
patent: 4302019 (1981-11-01), Hotger
patent: 4520879 (1985-06-01), MacElvain
Pierce Dean T.
Rassieur Charles L.
Central Mine Equipment
Cuomo Peter M.
Husar Cornelius J.
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