Adjustable width louver

Details Adjustable width louver Adjustable width louver

1991-04-25

1993-10-19

Joyce, Harold

Ventilation

Having inlet airway

Including specific cover or shield for exterior vent opening

F24F 1318

Patent

active

052540340

ABSTRACT:
An adjustable louver includes a longitudinally spaced pair of side frame numbers, a spaced apart pair of end members extending between the side members and including inner and outer submembers slidably engaging to extend or telescope through a continuum of positions respecting one another and blades extending between the side members with each blade including blade members which slidably engage to extend substantially through the continuum of positions through which said end members are extendable.

REFERENCES:
patent: 903340 (1908-11-01), Townsend
patent: 1173686 (1916-02-01), Sortore
patent: 1657625 (1928-01-01), Hoal
patent: 1782098 (1930-11-01), Majuschak
patent: 1879534 (1932-09-01), Schmidt
patent: 2183955 (1939-12-01), Bean
patent: 2194388 (1940-03-01), Haugh
patent: 3645195 (1972-02-01), Koval

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