Electric heating – Heating devices – With power supply and voltage or current regulation or...
Patent
1987-12-17
1990-01-30
Paschall, M. H.
Electric heating
Heating devices
With power supply and voltage or current regulation or...
219493, 219494, 219506, 236 46F, 373136, 432 51, H05B 102
Patent
active
048975265
ABSTRACT:
A kiln firing cycle controller is disclosed which automatically cycles a hobbyist kiln through its low, medium, and high power level phases. The exemplary embodiment includes a control panel having a firing cycle initiating control knob. Manipulation of the control knob appropriately supplies power to the kiln's heating elements and energizes a motor. The control knob is mounted on a shaft which is rotated by the energized motor. Also disposed on this shaft are a plurality of cams which rotates and act in concert to interconnect a set of contacts which appropriately connect the heating elements to a power supply to thereby control the kiln's power level settings. The rotation of the cams also controls the timely energization of control panel low, medium, and high power level indicators.
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patent: 3855452 (1974-12-01), Flaza et al.
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patent: 4399352 (1983-08-01), Ueda
patent: 4404461 (1983-09-01), Sitek et al.
patent: 4705930 (1987-11-01), Sathre, Jr. et al.
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