Positive shutoff

Details Positive shutoff Positive shutoff

1980-07-02

1982-01-26

Tapolcai, Jr., William E.

Automatic temperature and humidity regulation

Ventilator type

165 25, 236 80R, F24F 706

Patent

active

043124747

ABSTRACT:
In a central air conditioning system wherein air flow is regulated by bellows inflation which is controlled by a bleed-type thermostat, simultaneous heating and cooling in a zone is prevented by disabling the bleed-type thermostat when the heating system is activated.

REFERENCES:
patent: 3143292 (1964-08-01), Church et al.
patent: 3434409 (1969-03-01), Fragnito
patent: 3554111 (1971-01-01), Traver et al.
patent: 3595475 (1971-07-01), Morton
patent: 3623542 (1971-11-01), Fragnito et al.
patent: 3867980 (1975-02-01), Traver
patent: 3961748 (1976-06-01), McNabney
patent: 4027171 (1977-05-01), Browder et al.

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