Pipe joints or couplings – Swivel
Patent
1998-07-06
2000-06-06
Nicholson, Eric K.
Pipe joints or couplings
Swivel
285282, 2851215, 285190, F16L 3904
Patent
active
060709170
ABSTRACT:
A swivel coupling for high pressure fluid of the type providing an axle through which fluid can pass to a rotary connector. The swivel coupling includes first and second mechanical bearings spaced apart and mounted along the axle, wherein each mechanical bearing has an inner and an outer bearing member. The inner bearing members are attached to the axle while a mounting member attaches to the outer bearings so that the bearings provide radial and axial support between the axle and the mounting member while allowing relative rotation between them. A fluid opening on the axle between the mechanical bearings communicates with the rotary connector. The rotary connector is supported by a pair of swivel bushings wherein each swivel bushing is mounted on an opposing end of the rotary connector for locating it between the mechanical bearings. High pressure seals are fitted into upper and lower annular recesses located on the axle in respective positions above and below the fluid opening for sealing the connector.
REFERENCES:
patent: 1788500 (1931-01-01), Uhri, Jr.
patent: 2790426 (1957-04-01), Mueller
patent: 3411526 (1968-11-01), Schaefer
patent: 3917322 (1975-11-01), Berg et al.
patent: 4239262 (1980-12-01), Krupp et al.
patent: 4422676 (1983-12-01), Sitabkhan
patent: 4998693 (1991-03-01), Wiebe
patent: 5865374 (1999-02-01), Barta et al.
Battison Adrian D.
Nicholson Eric K.
Thrift Murray E.
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