Bearings – Rotary bearing – Antifriction bearing
Patent
1990-02-02
1992-05-05
Footland, Lenard A.
Bearings
Rotary bearing
Antifriction bearing
277 95, F16C 3378
Patent
active
051102226
ABSTRACT:
An ultra-low friction bearing including an inner race, an outer race, bearing elements engaged between the inner and outer races and a seal between the inner and outer races is disclosed. The seal includes first and second sealing washers. The first washer has an outer diameter greater than an inner diameter of the outer race and an inner diameter greater than the outer diameter of the inner race. The second washer has an inner diameter less than the outer diameter of the inner race and an outer diameter less than the inner diameter of the outer race. The first washer slidably engages the outer race, the second washer slidably engages the inner race and the washers overlap and slidably engage one another. One of the washers snap fits into its respective inner or outer race while the other washer engages a stepped surface of the other of the inner and outer races. The grooved and stepped surface are offset from one another in a longitudinal direction of the races such that the washers are conically loaded thus providing a seal between the inner and outer races sufficient to prevent lubricant and contaminating particles from passing therethrough. The washers are made from a non-metallic semi-flexible low-modulus material.
REFERENCES:
patent: 2600434 (1952-06-01), Saywell
patent: 2914365 (1959-11-01), Spicacci
patent: 3097896 (1963-07-01), Wasley
patent: 3642335 (1972-02-01), Takahashi et al.
patent: 3869181 (1975-03-01), Barber
patent: 4632404 (1986-12-01), Feldle et al.
patent: 4687349 (1987-08-01), Pachuta
patent: 4863293 (1989-09-01), Sytsma
Johnson Bruce H.
Larsen Lawrence E.
Welch Edmund F.
Chafin James H.
Daniel Anne D.
Footland Lenard A.
Moser William R.
The United States of America as represented by the United States
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