Double toric sealing ring

Details Double toric sealing ring Double toric sealing ring

1982-01-05

1983-11-15

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277188R, 277198, 251306, F16J 1512, F16J 1532

Patent

active

044151705

ABSTRACT:
A flexible double toric sealing ring comprising two toric sealing ring structures 2, 3 which ensure, respectively, a static seal and a dynamic seal. A counter ring is mounted radially on the second sealing ring structure and floats with it to allow self centering of the arrangement with respect to the valve seat. A sealing membrane 8 presents an elastically deformable structure 12 interconnecting the two sealing ring structures 2 and 3 while partially covering them. The two sealing ring structures 2, 3 are mounted on opposite sides of the middle section 11 of membrane 8. This double toric sealing ring can be advantageously applied to a butterfly valve.

REFERENCES:
patent: 3356336 (1967-12-01), Maenaka
patent: 3706482 (1972-12-01), Crockett
patent: 3879043 (1975-04-01), Tozer
patent: 3917294 (1975-11-01), Abbes et al.
patent: 4132399 (1979-01-01), Lechanu et al.
patent: 4194749 (1980-03-01), Bonafous

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