Roof drain adapter

Details Roof drain adapter Roof drain adapter

1997-10-14

1999-03-16

Arola, Dave W.

Pipe joints or couplings

Roof or floor drain flashing type

285915, 523021, E04D 1300

Patent

active

058820434

ABSTRACT:
A square or circular apron formed of plastic coated disk-like sheet metal or fiber-metal reinforced synthetic material is bonded to a circular ring gasket having a surface conforming to the upper mating surface of an existing roof drain flange. Reinforcing rib depressions are formed in the apron outer region. The apron extends for a major radial extent beyond the periphery of the drain flange and with the gasket is clamped to the drain flange via existing bolt holes in the drain using stainless steel or bronze replacement bolts. Screws clamp the apron and the underlying roof membrane, which may be bonded to the apron to form a water tight seal, to the deck. A metal clamp ring may be used to clamp the apron and gasket to the drain flange. Various embodiments are disclosed.

REFERENCES:
patent: 1503421 (1924-07-01), Innes
patent: 2275628 (1942-03-01), Hirshstein
patent: 2672205 (1954-03-01), McDonald
patent: 4850617 (1989-07-01), Moberly
patent: 5526613 (1996-06-01), Simeone
Brochure--Smith, 8 sheets, Jan. 12, 1994.
Brochure--RAC Roof Accessories Company, Inc., Feb. 1994, 11 pages.
Brochure--Josam, pp. 66-82, 1990.
Brochure--U-Flow Roof Drain Systems, Inc. Aug. 1987, 13 sheets.
Brochure--Zurn Industries, specification sheet, pp. RD1 to RD26, 1991.

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