One-piece lever for multi-louvered damper

Details One-piece lever for multi-louvered damper One-piece lever for multi-louvered damper

1989-02-23

1990-03-13

Joyce, Harold

98 411, F24F 1315

Patent

active

049075004

ABSTRACT:
A one-piece damper lever for a multi-louvered damper of the type mountable within a duct opening formed in a floor, wall or ceiling. The lever is used to pivot louvers between an open and closed position in order to control the flow of air through the damper. The lever is pivotable to a low-profile position such that it rests substantially coplanar with the damper face. The one-piece construction eliminates assembly following installation and the low profile reduces damage during shipping as well as providing a streamlined appearance to the damper grill.

REFERENCES:
patent: 113447 (1871-04-01), Phinney
patent: 131459 (1872-09-01), Phinney
patent: 672765 (1901-04-01), Hart
patent: 702936 (1902-06-01), Fox
patent: 2503421 (1950-04-01), Sherard
patent: 2837019 (1958-06-01), Godes
patent: 3500739 (1970-03-01), Dry
patent: 3552295 (1971-01-01), Armstrong
patent: 3676795 (1954-04-01), De Roo
patent: 3683786 (1972-08-01), Hedrick
patent: 3738254 (1973-06-01), Root
patent: 3780640 (1973-12-01), Fruth
patent: 3938430 (1976-02-01), Koppang
patent: 4653384 (1987-03-01), Amano

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