Hydraulic motor balancing ring seal

Details Hydraulic motor balancing ring seal Hydraulic motor balancing ring seal

1980-03-24

1981-09-15

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 83, 277 92, 277 95, 277177, 277211, 418 61B, F16J 1532, F16J 1534

Patent

active

042893186

ABSTRACT:
Inner and outer sealing rings (16 and 18) for the balancing ring (12) of a hydraulic motor, each comprising an annular elastomeric body (30) including a flat, radially extending central ring (36) and a pair of sealing elements (38 and 40) projecting axially away from opposite ends of the central ring (36) and in opposite axial directions therefrom and tapering to a sealing lip (50 and 52) in the directions away from the central ring. The inner and outer sealing rings (16 and 18) have cylindrical O.D. and I.D. surfaces, (54 and 66), respectively. Each sealing ring preferably has a reinforcing ring (32 and 62) and a liner (34 and 64) of low friction material.

REFERENCES:
patent: 3075781 (1963-01-01), Atkinson et al.
patent: 3137508 (1964-06-01), Cunningham
patent: 3171662 (1965-03-01), Warn et al.
patent: 3199878 (1965-08-01), Cunningham et al.
patent: 3269738 (1966-08-01), Baumler et al.
patent: 3572983 (1971-03-01), McDermott

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