Inlet Device

Details Inlet Device Inlet Device

1988-01-27

1989-01-03

Joyce, Harold

98 37, F24F 1318

Patent

active

047948523

ABSTRACT:
An inlet device for the wall of a building for example an animal barn comprises a simple moulded rectangular body through which the air can pass having an open mouth at one end and an inlet surface in a lower downwardly facing surface on the outer side of the wall. A door on a front face of the housing is hinged along a flange on the lower side of the housing as to hang down in the open condition. The door includes a foamed projection which can seal with a recess surrounding the open mouth of the housing. Inside the housing is provided a foamed plate-like shutter which is spring biassed into a closed position against flanges along the sides of the housing. The base of the shutter is freely mounted in a v-shaped area defined at a step above the lower surface of the housing to prevent freezing.

REFERENCES:
patent: 217215 (1879-07-01), Hayes
patent: 1975316 (1934-10-01), Ferris
patent: 2212468 (1940-08-01), Ferris
patent: 2706443 (1955-04-01), Meador
patent: 2800853 (1957-07-01), Spear
patent: 3057288 (1962-10-01), Papsdorf
patent: 4022117 (1977-05-01), Mallian

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