Gimbal joint for piping systems

Details Gimbal joint for piping systems Gimbal joint for piping systems

1985-02-06

1987-02-17

Callaghan, Thomas F.

Pipe joints or couplings

Flexible joint, rigid members

Bellows

285265, F16L 2700

Patent

active

046434631

ABSTRACT:
A flexible gimbal joint for pipes including an internal flexible seal interconnecting the pipes and an external gimbal ring which also provides secondary sealing. The joint includes spherical portions with mating sinusoidal free edges, the external ring and four trunnion pins, each pin coupled to the ring, two pins pivotally coupled to the first spherical portion and two other pins pivotally coupled to the second spherical portion. The inner surface of the ring is formed substantially as a spherical portion and has a diameter slightly greater than the outer surfaces of the first and second spherical portions. The ring surrounds these spherical portions, covering the gap between them, and thus acts as a secondary seal, while protecting the main internal seal. All axial loads on the joint are assumed by the spherical portions, the external ring and the trunnion pins, so the joint is easily flexed.

REFERENCES:
patent: 656667 (1900-08-01), Schmid
patent: 2613087 (1952-10-01), Alford
patent: 2904356 (1959-09-01), Love
patent: 3112129 (1963-11-01), Willis et al.
patent: 3219365 (1965-11-01), Webb
patent: 4165107 (1979-08-01), Affa et al.
patent: 4448449 (1984-05-01), Halling et al.
patent: 4480857 (1984-11-01), Graves

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