Limited angle piggable swivel

Details Limited angle piggable swivel Limited angle piggable swivel

1980-11-17

1982-12-07

Arola, Dave W.

Pipe joints or couplings

End to side or plate

Swivel with lateral port to annular sleeve

285136, 285281, 1510406R, F16L 2708

Patent

active

043623255

ABSTRACT:
A limited angle piggable swivel comprising a stationary cylindrical shaft and a rotatable housing member circumferentially mounted around the shaft in sealing engagement. The shaft has a conduit extending from the base to the side. The housing member has a passageway extending therethrough. The rotatable housing member is mounted on the shaft to permit coaxial alignment of the inner end of the housing passageway with the side end of the shaft conduit when the housing member is rotated around the shaft to the proper position. In a preferred embodiment of the present invention, both the inner end of the passageway and the side end of the conduit are flared outwardly to enable the swivel to be pigged in either direction when the longitudinal axis of the passageway is offset from the longitudinal axis of the side end of the conduit.

REFERENCES:
patent: 1220270 (1917-03-01), Phillips
patent: 2480858 (1949-09-01), Hobbs
patent: 3874706 (1975-04-01), Arnold
patent: 4142741 (1979-03-01), Fiala
patent: 4174127 (1979-11-01), Corn
patent: 4183559 (1980-01-01), Stafford et al.

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