EP 0371295 B1 19960117 - Radiant heating element
Title (en)
Radiant heating element
Title (de)
Strahlungs-Heizkörper
Title (fr)
Elément chauffant radiant
Publication
Application
Priority
DE 3840360 A 19881130
Abstract (en)
[origin: JPH02189884A] PURPOSE: To set a starting current in a light radiator to be at an allowable value in all output range by providing a braking device to be temporarily operated for temporarily controlling the activity of the light radiator. CONSTITUTION: After a radiant element is current-conducted, an output control contact 28 and the contact of a temperature limiter 20 are closed but a contact 24 is open because of the low internal resistance of a light radiator 15. The existence of two resistances 18, 21 connected to the upstream sides leaves an allowable current to be still at an allowable value despite of the low resistance of the light radiator 15. The light radiator 15 is usually heated in about two seconds and its resistance value is increased to almost ten times, so that voltage drop is caused to operate a brake switching device. For example, the contact 24 is closed. For such a reason, the resistance 21 is bridge-connected and the light radiator 15 is connected in series to a dark radiator 18. If a bimetal 29 is heated and the output contact 28 is open, the voltage of the switching device 22 is dropped down to zero. So, the contact 24 is open. These operations are repeated.
IPC 1-7
IPC 8 full level
H05B 3/74 (2006.01); H05B 3/00 (2006.01); H05B 3/72 (2006.01)
CPC (source: EP KR US)
G03G 15/20 (2013.01 - KR); H05B 3/72 (2013.01 - EP US); H05B 3/74 (2013.01 - KR)
Designated contracting state (EPC)
AT CH DE ES FR GB GR IT LI SE
DOCDB simple family (publication)
EP 0371295 A2 19900606; EP 0371295 A3 19910821; EP 0371295 B1 19960117; AT E133311 T1 19960215; AU 4549889 A 19900607; AU 626943 B2 19920813; DE 3840360 A1 19900531; DE 58909575 D1 19960229; ES 2081828 T3 19960316; JP H02189884 A 19900725; KR 900008348 A 19900604; US 5004892 A 19910402; YU 224189 A 19920907
DOCDB simple family (application)
EP 89120765 A 19891109; AT 89120765 T 19891109; AU 4549889 A 19891123; DE 3840360 A 19881130; DE 58909575 T 19891109; ES 89120765 T 19891109; JP 30678189 A 19891128; KR 890017240 A 19891127; US 44355989 A 19891129; YU 224189 A 19891124