Roof drain adapter
AssigneeExterior Research & Design, LLC
InventorsColin Murphy, Robert Mills
Life of this patent
Estimating the term…
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.
Claims19
Drain adapter for a drain in a cementitious roof deck, said drain including an annular flange of a given exposed surface configuration surrounding a central drain opening and having an annular array of bolt receiving apertures in the flange, said deck including a flexible roofing membrane thereover surrounding and adjacent to the flange, said adapter comprising:
- an annular compressible gasket having a first surface complementary to and for abutting engagement with said given exposed surface and a second surface distal the first surface;
- an annular disk-like apron overlying and abutting the gasket second surface and extending radially outwardly from the gasket for overlying an annular portion of the membrane adjacent to the flange and gasket, the apron and the gasket for being clamped to the flange and the apron for clamping the membrane annular portion to the deck;
- and
- fastening means for securing the apron to said flange and to said deck in said overlying position relative to said gasket and relative to said annular portion of the membrane.
Drain adapter for a drain in a roof deck, said drain including an annular flange of a given exposed surface configuration surrounding a central drain opening and an array of annular bolt receiving apertures in the flange, said deck including a flexible roofing membrane thereover surrounding and adjacent to the flange, said adapter comprising:
- an annular compressible gasket having a first surface complementary to and for abutting engagement with said given surface and a second surface distal the first surface;
- an annular apron for overlying and in abutment with:
- 1) the gasket second surface and 2) a portion of the roof deck flexible membrane adjacent to the flange;
- at least one reinforcing member;
- a plurality of bolts mating with said apertures for securing the gasket, at least one reinforcing member and apron to the flange;
- and
- a plurality of fasteners for fastening said apron against the membrane and to the deck.
Dependencies are inferred from the claim text.