Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1979-05-31
1980-07-15
Ward, Jr., Robert S.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277 84, 277 87, 277 93R, 277119, 277144, 277198, F16J 1534
Patent
active
042124743
ABSTRACT:
A seal ring with tapered surfaces is constituted by an inner ring, outer ring and a tightening resilient member. Each of the inner and outer rings is provided with an inner and outer peripheral surfaces and a pair of sealing end surfaces extending between the inner and outer peripheral surfaces. Each of the inner and outer ring is divided in the circumferential direction into two sections. The inner peripheral surface of the outer ring fits the outer peripheral surface of the inner ring, while the outer peripheral surface of the outer ring is surrounded by the resilient member so that the inner and outer rings are resiliently pressed radially inwardly. The end surfaces of the inner and outer rings are arranged flush to form common sealing surfaces. At least one of the common sealing surfaces thus formed constitutes a conical surface so that the axial distance between two common sealing surfaces is varied such that it increases toward the radially outer side. A sealing device is constituted by the seal ring with tapered surfaces having the above-stated construction, and annular surfaces to be sealed which are provided on two members adapted to rotate relatively to each other so as to oppose to each other, the annular surfaces to be sealed forming therebetween an outwardly diverging gap and being adapted to make close contact with the pair of common sealing surfaces of the seal ring. The radially inward pressing force of the resilient member produces an axial sealing force of the seal ring, through relative sliding contact between the conical sealing surface of the seal ring and the annular surface of the aforementioned member contacting therewith.
REFERENCES:
patent: 743666 (1903-11-01), Shaffer
patent: 1020456 (1912-03-01), Simon
patent: 1547919 (1925-07-01), Huhn
patent: 2747903 (1956-05-01), Heinrich
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