Automatic temperature and humidity regulation – High and low temperature alternate
Patent
1992-11-19
1993-07-13
Wayner, William E.
Automatic temperature and humidity regulation
High and low temperature alternate
165 12, G05D 2300
Patent
active
052265919
ABSTRACT:
A low temperature limit for battery powered thermostats for energizing and de-energizing the heating system when the battery can no longer operate the thermostat. The thermostat comprises a battery powered thermostat control for energizing and de-energizing the heating system and a low temperature limit electrically connected in parallel with the battery powered thermostat control. The battery powered thermostat control disables a controllable switch and, thereby, the low temperature limit bimetal switch when the battery is charged. When the battery is discharged, it enables the low temperature bimetal switch limit. Thereby, when the thermostat is no longer operational, the low temperature limit energizes the heating system when the ambient temperature present on the thermostat is below a preselected temperature.
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Honeywell Inc.
MacKinnon Ian D.
Wayner William E.
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