Air-conditioning duct apparatus with twistable duct vanes

Details Air-conditioning duct apparatus with twistable duct vanes Air-conditioning duct apparatus with twistable duct vanes

1989-08-14

1991-02-12

Joyce, Harold

98 4012, 98 402, F24F 13068

Patent

active

049914960

ABSTRACT:
An air-conditioning apparatus for adjusting the direction and quantity of air comprises a duct device forming an air passage passing through the duct device, and an airflow adjusting device. The airflow adjusting device is made from a single thin plate and fitted to the duct device across the air passage to adjust a flow of air. Slits of predetermined patterns are formed on the airflow adjusting device to define a plurality of vanes which are integral to the airflow adjusting device.

REFERENCES:
patent: D174847 (1957-03-01), Grimer
patent: 2222081 (1940-11-01), Leigh
patent: 2282946 (1942-05-01), De Roo
patent: 2636668 (1953-04-01), Meyer et al.
patent: 2784659 (1957-03-01), Roo et al.
patent: 2811094 (1957-10-01), Aver
patent: 2909112 (1959-10-01), Yousoufian
patent: 3170387 (1965-02-01), Felter

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