Roof ventilator

Details Roof ventilator Roof ventilator

1977-06-08

1979-01-02

Yuen, Henry C.

98 214, 98 13, 49193, F24F 702

Patent

active

041321600

ABSTRACT:
The present invention relates to a ventilator assembly for caravans or buildings. A ventilator panel is provided with internal projections any one of which can be engaged by a wiper arm to hold that part of the panel against opening movement. A slidable shaft raises the remainder of the panel so that the orientation of the opening can be selected.

REFERENCES:
patent: 2337632 (1943-12-01), Winser
patent: 2372164 (1945-03-01), Woodhams
patent: 2476402 (1949-07-01), Cook
patent: 3685093 (1972-08-01), Sanders et al.
patent: 3861083 (1975-01-01), Goiot
patent: 3979148 (1976-09-01), Martin

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