초록 ▼

A roof vent comprising a one piece plastic body including a base wall having transversely spaced rows of integral vanes extending from one surface thereof. The vanes of adjacent rows are positioned such that the vanes define a sinuous path. Preferably, one of each of the rows has the wings extending

A roof vent comprising a one piece plastic body including a base wall having transversely spaced rows of integral vanes extending from one surface thereof. The vanes of adjacent rows are positioned such that the vanes define a sinuous path. Preferably, one of each of the rows has the wings extending at an acute angle to the axis of the wall and the other row of each set of rows has the wings extending at an oppositely directed acute axis to the longitudinal axis of the wall toward the wings of the one row. Thus air is vented through sinuous paths outwardly when the vent is positioned with the wings engaging the roof and the base wall spaced from the roof. Water and snow are prevented by the wings from entry beneath the vent into the building.

대표청구항 ▼

A roof vent comprising a one-piece plastic body including a base wall having transversely spaced sets of rows of integral vanes extending from one surface thereof, each vane having a free end adapted to engage the roof when the vent is in position on a roof, the vanes in each row of vanes of each se

A roof vent comprising a one-piece plastic body including a base wall having transversely spaced sets of rows of integral vanes extending from one surface thereof, each vane having a free end adapted to engage the roof when the vent is in position on a roof, the vanes in each row of vanes of each set of vanes being longitudinally spaced from one another, parallel to one another, and extending at an acute angle to the axis of the wall and the vanes of the other row of each set of rows being longitudinally spaced from one another, parallel to one another and extending at an oppositely directed acute angle to the longitudinal axis of the wall, each outermost row of vanes being arranged such that the general plane of each vane intersects the general plane of an adjacent vane of an inner row, each vane having an outer free edge and an inner free edge, each vane having the inner free end thereof generally curved such that the free edge of said free end extends outwardly, a layer of porous material positioned between adjacent rows of vanes, said layer having a height greater than the height of the vanes such that when the vent is positioned with the vanes engaging the roof and the base wall spaced from the roof, air is vented through sinuous paths defined by successive rows of vanes outwardly and water and snow are prevented from entry beneath the vent into the building by the vanes and the layer, and tubular projections on each vane forming nail openings, said projections being formed with integral membranes closing the openings therein.