Damper control apparatus

Details Damper control apparatus Damper control apparatus

1993-07-02

1995-01-17

Joyce, Harold

Ventilation

Workstation ventilator

Covered workbench chamber

B08B 1502

Patent

active

053821920

ABSTRACT:
A damper control apparatus for a fume hood which has a moveable sash, and wherein the damper control apparatus includes an axle assembly borne by the fume hood, a cable assembly borne by the sash and disposed in force transmitting relation relative to the axle assembly, and a damper borne by the fume hood and disposed in force receiving relation relative to the axle assembly and moveable along a path of travel into assorted operational positions which correlate with the position of the sash thereby regulating the amount of air withdrawn from the fume hood.

REFERENCES:
patent: 2715359 (1955-08-01), Mackintosh et al.
patent: 4155289 (1979-05-01), Garriss
patent: 4377969 (1983-03-01), Nelson
patent: 5216782 (1993-06-01), Schenck et al.

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