Automatic damper

Details Automatic damper Automatic damper

1975-05-15

1977-04-12

Camby, John J.

Automatic temperature and humidity regulation

Thermostatic

In fluid controlled

236 1G, 126285R, 126293, 98 41R, 1375121, 137601, G05D 23275

Patent

active

040170268

ABSTRACT:
Automatic damper having pivotal semi-circular vanes which are moved to open position by pivotal movement of a longitudinal element disposed along the central gap between the vanes. The movement of the longitudinal element is controlled by a temperature responsive element. Retraction of the longitudinal element causes closing of the vanes. A J-slot arrangement locks the vanes in open position.

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patent: 1927606 (1933-09-01), Hambrick
patent: 2088037 (1937-07-01), Schelfhout
patent: 2112554 (1938-03-01), Beam
patent: 2467577 (1949-04-01), Baldwin
patent: 2837991 (1958-06-01), De Roo
patent: 3010381 (1961-11-01), Glass
patent: 3384112 (1968-05-01), Smith
patent: 3533438 (1970-10-01), Smith
patent: 3592240 (1971-07-01), Hedrick
patent: 3921900 (1975-11-01), Cole

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