Grounding device for preventing electrolytic corrosion in the be

Details Grounding device for preventing electrolytic corrosion in the be Grounding device for preventing electrolytic corrosion in the be

1983-09-15

1985-05-07

Footland, Lenard A.

Bearings

Rotary bearing

Antifriction bearing

384490, 384537, F16C 4104

Patent

active

045154171

ABSTRACT:
A grounding device for preventing electrolytic corrosion in the bearings of rotary electric machines including a bearing which supports the shaft of a rotor in a stator which is grounded, an electrically conductive end cover which is mounted on the stator so as to surround the bearing and a centrifugal contact point which is mounted on the shaft, which is in contact with the end cover when the machine is standing still or rotating at low speeds to short-circuit the shaft and the end cover, and which breaks the short-circuited condition as the running speed of the shaft increases.

REFERENCES:
patent: 1572287 (1926-02-01), Heitman et al.
patent: 4320317 (1982-03-01), Bowey
patent: 4386812 (1983-06-01), Anderson
"Shaft Current in Rotating Machinery" by Ryoichi Kuramochi, Fuji Electric Journal, vol. 38, No. 8, 1965, pp. 29-36 & 64.

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