Constant torque ball bearing

Details Constant torque ball bearing Constant torque ball bearing

1986-04-01

1988-05-03

Levy, Stuart S.

Bearings

Rotary bearing

Antifriction bearing

384450, 384523, 384533, 384567, 384568, 384574, F16C 3332, F16C 3338, F16C 3334, F16C 3352

Patent

active

047416327

ABSTRACT:
A ball structure for stabilizing bearing torque in high speed, preloaded, angular contact load supporting ball bearings operating on elastohydrodynamic lubricant films. Angular momentum developed about a ball spin axis that is not parallel to the bearing rotation axis results in a continuous creep of the ball about the momentum axis, thereby allowing a long term preload and torque variation. The improved ball set is shaped so that each ball has a mass inertia about its desired spin axis that is greater than about all other axes, so as to develop a restoring moment tending to maintain rotation about a fixed axis in each ball. The ball cage is configured to maintain ball alignment during run-up and run-down of the bearing.

REFERENCES:
patent: 3020106 (1962-02-01), Mims
patent: 3529477 (1970-09-01), Quermann
patent: 3620585 (1971-11-01), Anderson et al.
patent: 3667821 (1972-06-01), Rader
patent: 3813135 (1974-05-01), Martinie
patent: 3918778 (1975-11-01), Jacobson et al.

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