Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1980-09-22
1982-04-27
Smith, Robert I.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277166, 277182, 277184, F16J 1532
Patent
active
043267238
ABSTRACT:
A metal periphery type oil seal having a metallic reinforcement ring of a substantially L-shaped section. The ring is provided with an outer peripheral portion adapted to be fitted into a stationary portion and an annular side portion having its inner end in sliding contact with a rotary shaft. The outer peripheral portion is inwardly curved at its free end and the annular side portion is also bent at its inner end to improve the rigidity of the ring. A rubber lip is secured by baking to the annular side portion of the ring so as to clamp the inner peripheral end thereof. The rubber lip is integrally formed with an annular rubber plate which is secured by baking to the outer surface of the annular side portion. The outer peripheral portion and the annular side portion of the ring are connected with each other through a two-stepped bent portion with an annular cavity formed on the outer surface thereof. The annular cavity is filled with an enlarged rubber ring which has an outer diameter not less than that of the reinforcement ring so as to completely check the oil leakage. A plurality of reinforcement ribs are preferably formed on the bent inner end of said annular side portion.
REFERENCES:
patent: 2208482 (1940-07-01), Victor
patent: 2873153 (1959-02-01), Haynie
patent: 2950506 (1960-08-01), Corsi
patent: 3275332 (1966-09-01), May
patent: 4211152 (1980-07-01), Colletti et al.
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