Windmill damper operator

Details Windmill damper operator Windmill damper operator

2005-07-01

2009-02-10

Norman, Marc E (Department: 3744)

Automatic temperature and humidity regulation

Ventilator type

Electrically actuated

C062S186000, C454S152000, C454S278000

Reexamination Certificate

active

07487922

ABSTRACT:
A small windmill is provided upstream of a damper in an air duct. When air flows in the duct it rotates the windmill. The windmill shaft is connected by a cable to the damper operator through a transmission means, such that, as the shaft turns, it takes-up the cable an opens the damper.

REFERENCES:
patent: 3806733 (1974-04-01), Haanen
patent: 3815638 (1974-06-01), Martin
patent: 4311435 (1982-01-01), Bergero
patent: 4446418 (1984-05-01), Richardson
patent: 4501389 (1985-02-01), Kolt
patent: 4527072 (1985-07-01), van Degeer
patent: 5117143 (1992-05-01), Iddings
patent: 55014941 (1980-02-01), None
patent: 01127846 (1989-05-01), None

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