Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1996-03-27
1997-08-26
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 89, 310220, 439 29, H01K 3900, H02K 1300
Patent
active
056613563
ABSTRACT:
A grounding system for an AC or DC motor or other rotating apparatus employs a conductive brush in resilient contact with a contamination free conductive member removably secured onto a rotating part such as a motor shaft or tachometer shaft. The contacting surface is preferably formed of brass and is shielded from contamination from motor bearings and the like, for reliably shunting the shaft to the frame of the machine so as to avoid high voltage transients across bearings as would otherwise result in bearing damage or destruction.
REFERENCES:
patent: 2959697 (1960-11-01), Clarke
patent: 3226666 (1965-12-01), Lord
patent: 3286069 (1966-11-01), Bugg
patent: 3742264 (1973-06-01), Anderson et al.
patent: 3790832 (1974-02-01), Patel
patent: 3882366 (1975-05-01), Clunis
patent: 4019076 (1977-04-01), Bates
patent: 4139251 (1979-02-01), Miller et al.
patent: 4403164 (1983-09-01), Preece
patent: 4429242 (1984-01-01), Layh
patent: 4550283 (1985-10-01), Leach et al.
patent: 4566744 (1986-01-01), Engelenburg et al.
patent: 4663550 (1987-05-01), Kawada et al.
patent: 4684179 (1987-08-01), Freeman
patent: 4831295 (1989-05-01), Posedel
patent: 4841187 (1989-06-01), Hayke et al.
patent: 4853575 (1989-08-01), Lessig, III
patent: 4873512 (1989-10-01), Miller
patent: 4939506 (1990-07-01), Gram
patent: 4954084 (1990-09-01), Pugh et al.
patent: 4992691 (1991-02-01), Mlynarz
patent: 5227950 (1993-07-01), Twerdochlib
patent: 5233499 (1993-08-01), Twerdochlib
patent: 5258675 (1993-11-01), Nelessen
Lawson, J. Allan; "Motor Bearing Fluting"; 1993 IEEE (conference record of) Annual Pulp and Paper Industry Technical Conference; Hyannis, Massachusetts; Jun. 21-25, 1993; pp. 32-35.
Kerszenbaum, Isidor; "Shaft Currents in Electric Machines Fed by Solid State Drives"; 1992 IEEE (conference record of the) Industrial and Commercial Power Systems Technical Conference; Pittsburgh, Pennsylvania; May 4-7, 1992; pp. 71-79.
Jones, Roger W.; Seaver, Delbert E.; "Investigation and Results of Eddy Currents on DC Motor Bearings"; 1990 EEE (conference record of the) Annual Pulp and Paper Industry Technical Conference; Seattle, Washignton; Jun. 18-22, 1990; pp. 145-150.
Prashad, Har; "Theoretical and Experimental Investigations on the Pitch and Width of Corrugations on the Surfaces of Ball Bearings"; Wear (an international journal on the science and technology of friction, lubrication and wear); vol. 143, No. 1, pp. 1-14; Mar. 10, 1991.
Boyanton Hugh E.
Fisher Rodney R.
Enad Elvin G.
Stephan Steven L.
LandOfFree
Motor shaft discharge device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Motor shaft discharge device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motor shaft discharge device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1990382