Air distributor with automatically closable damper

Details Air distributor with automatically closable damper Air distributor with automatically closable damper

1981-10-23

1983-08-09

Makay, Albert J.

Fluid handling

Flow affected by fluid contact, energy field or coanda effect

Means to regulate or vary operation of device

98 1, 98 41AV, 137 75, F24F 1306, F16K 1740

Patent

active

043972233

ABSTRACT:
A reciprocating pneumatic actuator moves the damper of an air diffuser between open and closed positions and is automatically vented to atmosphere if fire or high heat occurs in the vicinity of the diffuser. When the actuator is vented, the return spring of the actuator snaps the damper to its closed position. A heat responsive latch automatically holds the damper in its closed position and prevents the damper from dropping open in the event the return spring is weakened by heat.

REFERENCES:
patent: 2673707 (1954-03-01), McRae
patent: 3537380 (1970-11-01), Spradling
patent: 4146048 (1979-03-01), McCabe

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