Electronic close damper alert unit

Details Electronic close damper alert unit Electronic close damper alert unit

1991-08-19

1993-07-27

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

126500, 126536, 340540, 340586, 340588, 340595, G08B 2100

Patent

active

052313778

ABSTRACT:
A portable unit indicates the precise time to close a fireplace damper door. The unit comprises a housing including a power source, and an electronic circuit, and an external heat sensor. The arrangement is such that the heat sensor is placed near the firebox and senses that a fire has been lit by the heat given off. The electronic circuit then stores this information and waits until the heat is no longer present. At this time, a fire extinguished indication is displayed, and a time delay circuit activated. If a fire is restarted before the delay circuit times out, the fire extinguished status is cleared and the process started over. If a fire is not restarted, and the delay circuit does time out, then a audible indication warns that the fireplace damper can now be manually closed to save energy.

REFERENCES:
patent: 2393482 (1946-01-01), Smith
patent: 4350142 (1982-09-01), Beyer et al.
patent: 4712095 (1987-12-01), Georgis, II
patent: 4916436 (1990-04-01), Silliman et al.
patent: 4928668 (1990-05-01), Reusch, Sr.

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