Bearings – Rotary bearing – Antifriction bearing
Patent
1989-09-20
1990-09-25
Hannon, Thomas R.
Bearings
Rotary bearing
Antifriction bearing
277 39, 384484, F16C 3378
Patent
active
049589423
ABSTRACT:
An oil seal assembly has an inner annular member and an outer annular member which can rotate relative to each other and are disposed concentrically with each other to have a certain distance from each other in the radial direction. An elastic annular sealing member is bonded to the outer annular member and is in sliding contact with the inner annular member to form sealed annular cavities between the inner and outer annular members. The outer annular member has a cylindrical portion and an annular flange portion. The inner annular member has an inner cylindrical portion, an annular flange portion and an outer cylindrical portion. This outer cylindrical portion is concentric with the inner cylindrical portion to form a certain distance from the inner peripheral surface of the cylindrical portion of the outer annular member. The elastic annular sealing member has a plurality of seal lips which are bonded to the inner peripheral portion of the annular flange portion of the outer annular member. At least two of the lips are in sliding contact with the outer peripheral surface of the inner cylindrical portion of the inner annular member and the inner peripheral surface of the annular flange of the inner annular member, respectively. A narrow annular space is formed between the end face of the outer cylindrical portion of the inner annular member and the inner peripheral surface of the flange portion of the outer annular member.
REFERENCES:
patent: 1420416 (1922-06-01), Dlesk
patent: 3101954 (1963-08-01), Huddle
Hannon Thomas R.
Koyo Seiko Co. Ltd.
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