1977-09-12
1979-02-13
Hunter, H. Hampton
F24F 702, F24F 1302
Patent
active
041389352
ABSTRACT:
A ventilator for use with sheet metal roofing.
The sheet metal panels covering the roof are lap-joined at the ridge of the roof and a ventilator opening is cut in the overlapped end portions of the sheet metal panels and in the underlying roof structure on either side of the ridge of the roof. The ventilator consists of a base member which is secured to the roof and a cover member which fits over the base member, both members being formed from sheet metal panels. The sheet metal panel from which the base member is formed has a centrally located cut-out conforming to the size of the opening in the roof structure and has its side edge portions folded upwards and inwards upon themselves to form flanges, and are further folded upwards at right angles to the flanges to form upstanding side walls. The end portions of the base sheet metal panel are folded to form curved windbreakers projecting outwardly between the ends of the upstanding side walls and are further folded to provide baffle walls extending between the side walls at a location close to the centrally located cut-out. The sheet metal panel from which the cover member is formed has its side portions bent downwards at right angles to the plane of the sheet and the edge portions are then folded inwards and upwards to form reinforced side walls, while the end portions of the panel are folded downwards and inwards to form angled deflectors. A second baffle is fitted to the under side of the cover member with the baffle portion being located in outward spaced apart location with respect to the baffles in the base member.
Both the base member and the cover member are bent transversely midway of their length to conform with the roof angle on either side of the roof ridge and when assembled, the angled deflectors of the cover member are spaced outwardly of the windbreakers of the base member.
REFERENCES:
patent: 2030388 (1936-02-01), Muirhead et al.
patent: 2625094 (1953-01-01), Bonforte
patent: 3238862 (1966-03-01), Smith et al.
patent: 3862529 (1975-01-01), Markos
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