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|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||210/163 ; 210/166 ; 285/42|
|발명자 / 주소||
|인용정보||피인용 횟수 : 30 인용 특허 : 5|
A roof drain including a grated, inverted, frusto-conically-shaped cover received in a roofing material clamp having a radial, upstanding, debris-discouraging flange. The cover and roof material clamp are demountably fixed to a flanged drain body and clampingly maintain roof material therebetween. The drain body is received by a flanged sleeve. The drain body and sleeve flanges clampingly maintain roof substrate therebetween by means of a nut threadingly interengaged with threads on the drain body which urges the sleeve toward the roof substrate.
A roof drain apparatus comprising: a grated,dome-shaped cover, said cover including an outward annular flange having throughbores; a roofing material clamp having an upstanding radial flange, an upper surface, a lower surface and a central aperture, said roofing material clamp including throughbores in registration with the throughbores of said cover; a generally funnel-shaped tubular drain body having an upper portion and a lower portion, said upper portion having an outward annular flange with threaded bores in registration with the throughbores of sai...