Self-aligning bearing for a precision measurement pendulum

Details Self-aligning bearing for a precision measurement pendulum Self-aligning bearing for a precision measurement pendulum

1991-09-09

1993-03-02

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

73653, H02K 709, G01H 100

Patent

active

051912490

ABSTRACT:
This invention relates to a self-aligning bearing for a precision measurement pendulum, in which, between the pendulum and a housing, there are two magnetic bearings, one each on either side of the pendulum, each of which has a bearing ring magnet. The magnetic bearing on the one side of the pendulum has a pole pivot for magnetic centering, opposite which is the pole pivot of a soft iron core. The magnetic bearing located on the other side of the pendulum has a spacer as a mechanical stop, in which there is a tension wire or band stretched between the pendulum and the housing. The magnetic bearings generate magnetic fields of like or unlike polarity extending in the direction of the pendulum axis of rotation, rotationally symmetrically around the latter, and magnetic fields of unlike polarity extending radially to the pendulum axis of rotation, and radially symmetrical to it. The precision measurement pendulum can be used advantageously in a highly-sensitive bearing for measurement purposes.

REFERENCES:
patent: 3597023 (1971-08-01), Baermann
patent: 3614181 (1971-10-01), Meeks
patent: 3934950 (1976-01-01), Kuhlmann
patent: 4152940 (1979-05-01), Saito
patent: 4185503 (1980-01-01), Saito
patent: 4684811 (1987-08-01), deMey, II
patent: 4792676 (1988-12-01), Hojo et al.
patent: 4821218 (1989-04-01), Potsch
"Weinmann, Magnetic Bearings", manuscript (1976) 13 pages.

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