Membrane seal secured to inner and outer oscillating bearing mem

Details Membrane seal secured to inner and outer oscillating bearing mem Membrane seal secured to inner and outer oscillating bearing mem

1994-09-13

2000-09-26

Tupper, Robert S.

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Record transport with head stationary during transducing

Drum record

360 9702, 384477, G11B 1702, G11B 555, F16C 3376

Patent

active

061250074

ABSTRACT:
A bearing seal assembly for an oscillating actuator, comprises an outer bearing raceway, an inner bearing raceway mounted concentric with the outer raceway, and an annular deformable liquid impermeable membrane having an axial length of not more than one tenth the radius thereof, an inner peripheral edge sealingly secured to the inner bearing raceway, and an outer peripheral edge sealingly secured to the outer raceway for enabling limited relative rotation between the inner raceway and the outer raceway with minimum axial distortion of said membrane. In one embodiment, the membrane is stretched to eliminate surface distortion under torsional stress. Another embodiment illustrates waves molded into the membrane for reducing torsional forces.

REFERENCES:
patent: 2946609 (1960-07-01), Comery
patent: 3700297 (1972-10-01), Fickenwirth et al.
patent: 4426090 (1984-01-01), Bender
patent: 4444400 (1984-04-01), Norman
patent: 4483569 (1984-11-01), Smith
patent: 4722616 (1988-02-01), Lederman
patent: 5023733 (1991-06-01), Koga et al.
patent: 5046868 (1991-09-01), Albert

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