1989-04-24
1992-08-18
James, Andrew J.
H01L 2356, H01L 2966
Patent
active
051403943
ABSTRACT:
A protective circuit capable of remotely switching power to a load on and off and including an electrothermal sensor system having a heating element of predetermined resistance in series with the load and source of power whereby the temperature of the heating element is monitored relative to ambient temperature to determine current flow in the heater. The electrothermal sensor, according to one embodiment, includes a ceramic substrate having the heater formed thereon with a first deposited heat monitoring element thereon for monitoring the temperature of the heater and a second heat monitoring element thereon for monitoring the ambient temperature of the substrate remote from the heater. The electrothermal sensor, according to a second embodiment, includes a layer of electrically conductive material, a backing layer thereon of electrically insulating material, a grid on the backing layer of thermoresponsive material to form RTDs and a second layer of electrically insulating material over said grid.
REFERENCES:
patent: 3651379 (1972-03-01), Moisand et al.
patent: 3912982 (1975-10-01), Fasulkey
patent: 3987311 (1976-10-01), Thornburg
patent: 4001649 (1977-01-01), Young
patent: 4035692 (1977-07-01), Luy et al.
patent: 4104692 (1978-08-01), Sudo et al.
patent: 4232212 (1980-11-01), Baraff et al.
patent: 4547826 (1985-10-01), Premerlani
patent: 4553092 (1985-11-01), Purves
patent: 4571608 (1986-02-01), Johnson
patent: 4628397 (1986-12-01), Gareis et al.
patent: 4675777 (1987-06-01), Watrous
patent: 4683515 (1987-07-01), Beihoff et al.
patent: 4730160 (1988-03-01), Cusack et al.
patent: 4779161 (1988-10-01), DeShazo, Jr.
patent: 4792877 (1988-12-01), Thornton
High Speed Thermal Transfer Printing, IBM Tech. Disclosure, vol. 28, #7, Dec. 1985.
Cobb, III Carleton M.
LeComte Norman E.
Nott Sepideh H.
Strobel Stephen J.
Baumann Russell E.
Donaldson Richard L.
Grossman Rene E.
James Andrew J.
Meier Stephen D.
LandOfFree
Electrothermal sensor apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electrothermal sensor apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrothermal sensor apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1252627