Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1981-02-19
1984-03-27
Ward, Jr., Robert S.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277 85, 277 65, F16J 1538
Patent
active
044389361
ABSTRACT:
A secondary sealing element for axial seal rings, is resistant to stresses due to temperature, pressure, vibration, corrosion, swelling and shrinking. This sealing element is produced of non-rubber-type elastic and non brittle material and its shape, in cross-section, consists of a ring, with a pair of arms to give it an elastic reaction. The double-arm ring forms three radial-type sealing surfaces and is completely locked into a chamber. Special material with low static friction and higher thermal conductivity than rubber material is used. Furthermore the dissipation of heat, produced by the axial sliding rings, will be increased through the double contact area to the shaft by the arms in comparison to an O-ring, and through a wear-resistant and non-corrosive layer on the shaft having at least the thermal conductivity of the basic material.
REFERENCES:
patent: 2729478 (1956-01-01), Chambers et al.
patent: 2922668 (1960-01-01), Haake
patent: 3117794 (1964-01-01), Wachal
patent: 3897957 (1975-08-01), Warner
patent: 3907309 (1975-09-01), Griffiths
patent: 4157187 (1979-06-01), Kemp
patent: 4361335 (1982-11-01), Vinciguerra
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