Variable speed damper means

Details Variable speed damper means Variable speed damper means

1983-06-24

1985-03-26

Tapolcai, William E.

Automatic temperature and humidity regulation

Ventilator type

49 82, 981212, 137601, F24F 1314

Patent

active

045068291

ABSTRACT:
Automatic damper means having damper blades rotatably mounted in an adjustable housing, said blades being rotatable between open and closed positions by electrically energized motor means and attaching rotating means; interchangeability of said rotating means connecting to damper blades provide for a variation in the rpm's of said damper blades.

REFERENCES:
patent: 1631355 (1927-06-01), Baldwin
patent: 2271487 (1942-01-01), Nessell
patent: 4056048 (1977-11-01), Milroy
patent: 4184288 (1980-01-01), Magill et al.
patent: 4275762 (1981-06-01), Field

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