Title: Fan control for forced air temperature conditioning apparatus

Abstract: An improved fan controller for forced-air temperature conditioning apparatus for buildings, such as for example, forced warm air furnaces in which the fan turn-off is controlled as a function of the difference in temperature between the plenum temperature and the return air temperature.

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Inventors: Bonne, Ulrich (Hopkins, MN, US)
Tobias, James R. (Minneapolis, MN, US)

Application Number: 772795
Filing Date: 1977-02-28
Publication_date: 1978-05-23
Assignee: Honeywell Inc. (Minneapolis, MN)
Primary Class(es): 236/10 165/289, 236/91F, 236/DIG9
Other Classes:
US Patent Ref:

2329813	Sep, 1943	Amsler	236/91.
2369044	Feb, 1945	Hallinan	236/10.
2557027	Jun, 1951	Cross	236/10.
2862666	Dec, 1958	Kriechbaum	236/11.
3158319	Nov, 1964	Nelson	236/11.
3472452	Oct, 1969	Beeston	236/11.

Other Refs:
Primary Examiner: Gordon, Clarence R.
Assistant Examiner:
Attorney: Dahle; Omund R.