Bearing failure indicator for rotating electric machines

Details Bearing failure indicator for rotating electric machines Bearing failure indicator for rotating electric machines

1979-09-04

1983-04-05

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

310 68C, 340648, 340686, G08B 2100

Patent

active

043792910

ABSTRACT:
In a squirrel cage type of induction motor, conductive strips insulated from the stator are circularly spaced, ninety degrees apart, and project 0.003 inches into the rotor-to-stator clearance space. Upon excessive lateral rotor movement, it contacts a strip, closing a low voltage circuit triggering an alarm and de-energizing the motor. A reset button must be pressed to enable starting the motor.

REFERENCES:
patent: 1001152 (1911-08-01), Lawrence
patent: 2794136 (1957-05-01), Kalikow et al.
patent: 3611036 (1971-10-01), Edson
patent: 3824579 (1974-07-01), Waseleski, Jr. et al.
patent: 3840780 (1974-10-01), Sons
patent: 4074575 (1978-02-01), Bergman et al.

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