Stall or reduced-speed protection system for electric motor

Details Stall or reduced-speed protection system for electric motor Stall or reduced-speed protection system for electric motor

1996-05-02

1997-10-07

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Motor protective condition responsive circuits

361115, 361 30, H02H 504

Patent

active

056754647

ABSTRACT:
A protection system for an electric motor is disclosed. The system is adapted for providing protection to the motor in the event of a stall or reduced-speed condition. The system includes a sensor providing a first signal representative of the speed of the motor, a detection circuit receiving the first signal and providing a second signal indicative of whether the motor is in a stall or reduced-speed condition, and a switching circuit receiving the second signal and interrupting power supply to the motor when the second signal indicates that the motor is in the stall or reduced-speed condition.

REFERENCES:
patent: 3937974 (1976-02-01), Lafuze
patent: 4162435 (1979-07-01), Wright
patent: 4240015 (1980-12-01), White
patent: 4322668 (1982-03-01), Trussler
patent: 4403177 (1983-09-01), Weber et al.
patent: 4490661 (1984-12-01), Brown et al.
patent: 4494058 (1985-01-01), Berti
patent: 4651069 (1987-03-01), Pellegrini
patent: 4678973 (1987-07-01), Elliott et al.
patent: 4694210 (1987-09-01), Elliott et al.
patent: 4883982 (1989-11-01), Forbes et al.
patent: 4928043 (1990-05-01), Plunkett
patent: 4992169 (1991-02-01), Izumiya
patent: 4992710 (1991-02-01), Cassat
patent: 5001405 (1991-03-01), Cassat
patent: 5017845 (1991-05-01), Carobolante et al.
patent: 5017846 (1991-05-01), Young et al.
patent: 5019756 (1991-05-01), Schwarz
patent: 5023527 (1991-06-01), Erdman et al.
patent: 5023528 (1991-06-01), Saidin et al.
patent: 5028852 (1991-07-01), Dunfield
patent: 5043642 (1991-08-01), Ohi
patent: 5053686 (1991-10-01), Juarez
patent: 5075608 (1991-12-01), Erdman et al.
patent: 5117165 (1992-05-01), Cassat et al.
patent: 5125067 (1992-06-01), Erdman
patent: 5187417 (1993-02-01), Minnich et al.
patent: 5196771 (1993-03-01), Naito
patent: 5206567 (1993-04-01), Sakurai et al.
patent: 5208518 (1993-05-01), Grapenthin et al.
patent: 5210474 (1993-05-01), Oswald
patent: 5227704 (1993-07-01), Erdman
patent: 5233275 (1993-08-01), Danino
patent: 5241247 (1993-08-01), Salerno et al.
patent: 5245256 (1993-09-01), Cassat et al.
patent: 5254914 (1993-10-01), Dunfield et al.
patent: 5254918 (1993-10-01), Ueki
patent: 5298838 (1994-03-01), Peters et al.
patent: 5325026 (1994-06-01), Lyons et al.
patent: 5327053 (1994-07-01), Mann et al.
patent: 5334917 (1994-08-01), Lind
patent: 5336956 (1994-08-01), Haner
patent: 5343127 (1994-08-01), Maiocchi
patent: 5349257 (1994-09-01), Hernden
patent: 5350987 (1994-09-01), Ueki
patent: 5367234 (1994-11-01), DiTucci
patent: 5376866 (1994-12-01), Erdman
patent: 5378967 (1995-01-01), Naito
patent: 5382889 (1995-01-01), Peters et al.
patent: 5382890 (1995-01-01), Moh et al.
patent: 5384527 (1995-01-01), Rozman et al.
patent: 5389862 (1995-02-01), Tominaga
patent: 5397972 (1995-03-01), Maiocchi
Switchgear and Control Handbook, Smeaton, Robert W., Second Edition, McGraw-Hill Book Company, pp. 29-1 through 29-14.

Affiliated with

Also associated with

Rating

Stall or reduced-speed protection system for electric motor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Stall or reduced-speed protection system for electric motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stall or reduced-speed protection system for electric motor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2361932