Roof ventilator

Details Roof ventilator Roof ventilator

1983-03-24

1985-06-04

Joyce, Harold

98 4222, F24F 702

Patent

active

045207135

ABSTRACT:
A ventilator for mounting on a sloping roof has a pair of trapezoidal side members. The uphill ends of the side members are less slanted than the lower ends. Covering members extend between the side members to define an opening along the upper bases of the side members through which air may exit from a hole in the roof of the building.

REFERENCES:
patent: 2423739 (1947-07-01), Tillman
patent: 2490220 (1949-12-01), Leslie
patent: 2685247 (1954-08-01), Bell, Jr.
patent: 2741972 (1956-04-01), Pryne
patent: 4090435 (1978-05-01), Vallee
patent: 4109433 (1978-08-01), Maze

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