Shaft grounding brush and holder

Details Shaft grounding brush and holder Shaft grounding brush and holder

1991-03-01

1993-07-13

Pellinen, A. D.

Electricity: electrical systems and devices

Discharging or preventing accumulation of electric charge

Specific conduction means or dissipator

310239, 310242, 310248, H05F 300, H01R 3938, H01R 3940

Patent

active

052279502

ABSTRACT:
A brush assembly for providing contact between a grounding brush and a rotating shaft, in which the noncontact time associated with brush bounce is reduced. A brush is provided which is fixed to a pivotable arm, with a bias force applied to the arm, such that when the brush is bounced from a shaft as a result of vibration or shaft wobbling, the bias force will reestablish contact between the brush and shaft. Rolling contact between a negator spring and the arm is also provided for reducing friction associated with contact between the spring and pivotable arm. Due to the reduced friction provided by the rolling contact, and more significantly by the pivotal mounting of the arm to which the brush is fixed, the response of the assembly in reestablishing contact with the shaft is greatly improved.

REFERENCES:
patent: 1422188 (1922-07-01), Dorffel
patent: 2753477 (1956-07-01), Yahn et al.
patent: 4277708 (1981-07-01), McNab et al.
patent: 4749899 (1988-06-01), Ishazawa et al.

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