Closure device

Details Closure device Closure device

1987-05-14

1988-03-29

Joyce, Harold

Fluid handling

Flow affected by fluid contact, energy field or coanda effect

Means to regulate or vary operation of device

1375121, 137517, 137529, F24F 1100

Patent

active

047336064

ABSTRACT:
A closure device for shelters and the like. The frame (1) of the closure device is provided with at least one flow-through passage (2); a closure (3) is mounted displaceably in each passage; and a counter part is formed in the frame for each closure. The closure is displaceable between an open position, which permits a normal air flow, and a closed position, which may be caused by a pressure shock, in which the closure means is pressed against the counter part so as to close the respective passage. The objective is to provide a simple and steady structure, the operation of which is as efficient as possible. Accordingly, the passage (2) is defined by substantially U-shaped elements/partial elements (5a, 5b) which open towards each other in the direction of flow. The element/partial element (5a and 5b respectively) on the incoming side of a flow (A or B) is arranged to function as a flow guide element, and the element/partial element (5b and 5a, respectively) on the exhaust side of the flow (A or B) is arranged to function as a suppressing element for the pressure shock.

REFERENCES:
patent: 3015342 (1962-01-01), Price
patent: 3296952 (1967-01-01), Lingal
patent: 3301168 (1967-01-01), Schindler et al.
patent: 4495964 (1985-01-01), Bennitt

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