Ventilator controller with variably adjustable fan and light

Stoves and furnaces – Stove hoods

Patent

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Details

126299R, 126299E, 454 67, 454341, 454343, F24C 1520

Patent

active

056900937

ABSTRACT:
A range hood having a sleek, modern appearance has a keypad and control circuit which enable adjustment of fan speed and light intensity. The range hood includes a keypad having a linear array of keys which may be individually or collectively used to energize the fan at one of a variety of speeds. A control circuit responds to depression of one or a group of two of the keys and in response selects one of a plurality of possible fan speeds. The array of keys is also used in conjunction with a separate night light key to program the intensity of the light for use as a night light. An automatic shutoff key is used to gradually reduce the fan speed until, ultimately, the fan is deenergized.

REFERENCES:
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patent: 4719524 (1988-01-01), Morishima et al.
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patent: 4867047 (1989-09-01), Citron
patent: 4920253 (1990-04-01), Takei
patent: 5074281 (1991-12-01), Fluhrer et al.
patent: 5139009 (1992-08-01), Watsh
patent: 5232152 (1993-08-01), Tsang
patent: 5498858 (1996-03-01), Jeong
Leviton Mfg., "Instruction Manual for Part No. 6161" Push Button Dimmer.

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