Building ventilation system with air inlet flap control

Details Building ventilation system with air inlet flap control Building ventilation system with air inlet flap control

1988-04-29

1989-04-25

Joyce, Harold

98 37, 98 4005, 98119, F24F 7007

Patent

active

048236799

ABSTRACT:
In a ventilation system for a building in which air is extracted by a fan arrangement, an inlet flap arrangement is provided for a ceiling opening which comprises a foamed material flap member mounted directly covering the ceiling opening. The flap member is controlled by a tension spring biasing it to a closed position so that its weight and air pressure act to open the flap. The angle of the spring relative to the position of the center of gravity of the flap member are controlled to provide the required opening characteristics. In one arrangement the flap member is shaped as a scoop so as to direct air along the ceiling when opened.

REFERENCES:
patent: 1975316 (1934-10-01), Ferris
patent: 2022143 (1935-11-01), Mottershall
patent: 2057627 (1936-10-01), Ferris
patent: 2464000 (1949-03-01), Schild
patent: 2502736 (1950-04-01), Marcoe
patent: 2599075 (1952-06-01), Stroup
patent: 2624265 (1953-01-01), Mader
patent: 2775928 (1957-01-01), Morrison
patent: 2814977 (1957-12-01), Noll
patent: 2862438 (1958-12-01), Mader
patent: 3057288 (1962-10-01), Papsdorf
patent: 3250206 (1966-05-01), Strouth
patent: 3368756 (1968-02-01), Edwards
patent: 3842722 (1974-10-01), Miller
patent: 3865021 (1975-02-01), De Lepeleire
patent: 4022117 (1977-05-01), Mallian
patent: 4241871 (1980-12-01), Newell, III et al.
patent: 4249461 (1981-02-01), Christenson et al.
patent: 4334577 (1982-06-01), George
patent: 4457215 (1984-07-01), Vogt
patent: 4498373 (1985-02-01), Dittmer et al.
patent: 4534278 (1985-08-01), Spilde
patent: 4557247 (1985-12-01), Hara et al.
patent: 4616696 (1986-10-01), Brundrett et al.

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