Protection device

Details Protection device Protection device

1982-09-23

1984-06-26

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Circuit interruption by thermal sensing

200 83P, 337 3, 361 24, H02H 504, H02H 508

Patent

active

044569416

ABSTRACT:
An electric motor protection device comprising a body, an electric strip, a plunger, and pressure and temperature sensitive snap discs. The electric strip moves from a current conductive, closed position to a current nonconductive, open position when the current conducted through the strip exceeds a preset level. The plunger engages the electric strip also to move the strip from the closed position to the open position. The pressure and temperature discs move from normal positions to overcenter positions to engage the plunger and move the electric strip from the closed position to the open position, respectively, when the vapor pressure forces on the pressure disc and the temperature of the temperature disc exceed preset values.

REFERENCES:
patent: 2454288 (1948-11-01), Michaelson
patent: 2562286 (1951-07-01), Wall
patent: 2978879 (1961-04-01), Heidorn
patent: 3141996 (1964-07-01), McGrath
patent: 3451028 (1969-06-01), Schmitt
patent: 3493911 (1970-02-01), Broetto
patent: 3500277 (1970-03-01), Nardulli
patent: 3525914 (1970-08-01), Vind
patent: 3551868 (1970-12-01), Good
patent: 3575645 (1969-07-01), Doversberger
patent: 3586910 (1969-05-01), Sauber
patent: 3933005 (1976-01-01), Beltz
patent: 4091249 (1978-05-01), Huffman

Affiliated with

Also associated with

Rating

Protection 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 Protection device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Protection device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2234802