Safety means for preventing the automatic restart of a motor

Details Safety means for preventing the automatic restart of a motor Safety means for preventing the automatic restart of a motor

1979-03-29

1981-03-24

Smith, Jr., David

Electricity: motive power systems

Induction motor systems

Braking

318459, 318549, 361 22, H02P 300

Patent

active

042583683

ABSTRACT:
A safety device for preventing the automatic restart of a motor upon restoration of power to the motor. This device, in its preferred embodiment, includes a thyristor switch, such as a triac, in one of the power leads to the motor which is triggered by energizaton of the motor. Upon deenergizaton of the motor, the thyristor switch switches to its non-conductive state thereby preventing automatic restarting of the motor upon restoration of the power. A selectively actuable, momentary run switch is provided to momentarily shunt out the thyristor switch so as to selectively permit the restart of the motor.

REFERENCES:
patent: 2382983 (1945-08-01), Ellis
patent: 3268768 (1966-08-01), Milligan et al.
patent: 3562587 (1971-02-01), Forst
patent: 3761794 (1973-09-01), Quinlisk, Jr. et al.
patent: 3763377 (1973-10-01), Weston
patent: 3903456 (1975-09-01), Schaefer
patent: 4121140 (1978-10-01), Jones
patent: 4125885 (1978-11-01), Lowther
General Electric Seminar Application Informaton 671.1 p. 9 3/65.

Affiliated with

Also associated with

Rating

Safety means for preventing the automatic restart of a 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 Safety means for preventing the automatic restart of a motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Safety means for preventing the automatic restart of a motor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2410071