Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1984-03-05
1985-02-05
Ward, Robert S.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277 27, 277 82, 277 84, 277152, F16J 1532, F16J 1548
Patent
active
044974957
ABSTRACT:
A unitized wheel bearing seal includes inner and outer metal casings each of which has a cylindrical wall press fitted between inner and outer concentric bores in a wheel bearing to seal a lubricant space. The outer bore is stationary, and the inner metal casing has a radially extending outer annular flange. A two lip, unsprung seal extends from the inner casing, one leg engaging the annular flange and the other engaging the cylindrical wall of the outer casing, each at an acute angle, with a lubricant containing cavity formed between them. This orientation allows the lips to flex away to allow pressure egress from the lubricant space, but prevents flexing in the other direction to block the ingress of contaminants from the ambient. The spinning annular flange also acts as a slinger to prevent contaminant entry.
REFERENCES:
patent: 2240252 (1941-04-01), Bernstein
patent: 3101954 (1963-08-01), Huddle
patent: 3363911 (1968-01-01), McKinnen
patent: 3494681 (1970-02-01), Anderson et al.
patent: 4106781 (1978-08-01), Benjamin et al.
patent: 4278261 (1981-07-01), Miura et al.
patent: 4285526 (1981-08-01), Klinteberg et al.
patent: 4408809 (1983-10-01), Walter et al.
General Motors Corporation
Griffin Patrick M.
Ward Robert S.
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