Roof drain assembly

Details Roof drain assembly Roof drain assembly

1986-07-14

1988-07-26

Pate, III, William F.

Static structures (e.g., buildings)

Enclosure or cover, with supplemental fluid-guiding port...

Attic vent

52 58, E04H 1228

Patent

active

047591633

ABSTRACT:
In a roof drain assembly comprising an existing roof structure having an opening therethrough with a drainage duct extending downwardly through the opening, and a re-roofing structure which includes a layer of insulation and which is disposed over the existing roof structure with an opening through the re-roofing structure in alignment with the opening through the existing roof structure, a drain extension pipe extends through the opening in the re-roofing structure and into the upper end portion of the drainage duct. The portion of the drain extension pipe within the drainage duct is of a non-resiliently deformable material such as lead, and this non-resiliently deformable portion of the drain extension pipe is outwardly mechanically deformed against the drainage duct to provide a substantially water-tight seal therebetween. In use an outer tube to which the upper plate is secured is prevented from turning, and an inner shaft which is screw-threadedly disposed through the upper plate and on the lower end of which the lower plate is mounted is turned in the appropriate direction to cause the lower plate to move towards the upper plate with resultant axial compression and outward expansion of the resiliently deformable annulus against the non-resiliently deformable portion of the drain extension pipe.

REFERENCES:
patent: 870917 (1907-11-01), Weston
patent: 1322189 (1919-11-01), Holt
patent: 1779941 (1930-10-01), Kerr
patent: 1875640 (1932-09-01), Moore
patent: 2121789 (1938-06-01), Davey
patent: 2716428 (1955-08-01), Pennella
patent: 3420652 (1969-01-01), Mork
patent: 3615984 (1971-10-01), Chase
patent: 3977137 (1976-08-01), Patry
patent: 4010578 (1977-03-01), Logsdon
patent: 4372585 (1983-02-01), Evora
patent: 4505499 (1985-03-01), Uglow et al.
patent: 4512119 (1985-04-01), Willoughby

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