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A roof drain for draining rain water from a flat roof comprises a conduit, with a roof flange, a strainer for straining debris from the water entering the drain, having an openable cap. The roof flange extends peripherally outwardly around the top of the conduit, and provides a connection between th

A roof drain for draining rain water from a flat roof comprises a conduit, with a roof flange, a strainer for straining debris from the water entering the drain, having an openable cap. The roof flange extends peripherally outwardly around the top of the conduit, and provides a connection between the surface of the roof. The conduit provides a connection with a drainage pipe located beneath the surface of the roof. The roof flange has a flat outer top surface and an recessed inner portion with a shoulder connecting the inner and outer portions of the roof flange. The strainer includes a hollow strainer basket with open bottom and top faces and side walls containing a plurality of apertures, and a strainer flange extending peripherally outwardly around the bottom edge of the side walls of the strainer basket. The outside dimension of the strainer flange is sized to fit within the recessed portion of the roof flange. The shoulder of the roof flange is crimped over the strainer flanger to non-removably rigidly couple the strainer to the roof flange. The openable cap provides selective access to the interior of the strainer to facilitate periodic cleaning and maintenance of the interior of the roof drain.

대표청구항 ▼

A device that drains water from a flat roof surface, said roof surface having a drainage pipe located there below, comprising: (a) connecting means for providing connections between the roof surface and the drainage pipe, comprising a conduit having a top and a bottom, the bottom being shaped to be

A device that drains water from a flat roof surface, said roof surface having a drainage pipe located there below, comprising: (a) connecting means for providing connections between the roof surface and the drainage pipe, comprising a conduit having a top and a bottom, the bottom being shaped to be coupled to the drainage pipe, and a roof flange extending peripherally outwardly around the top of the conduit having an outer portion with a flat top surface and a recessed inner portion connected to the outer portion by a shoulder portion; (b) straining means for straining debris from the water entering the drainage pipe, comprising a strainer basket having a substantially hollow interior, an open bottom face, an open top face, side walls having a top edge and a bottom edge and containing a plurality of apertures, and a strainer flange extending peripherally outwardly around the bottom edge of the side walls having an outside dimension sized to fit within the recessed inner portion of the roof flange, wherein the shoulder portion of the roof flange is crimped over the strainer flange to non-removably rigidly couple the straining means to the connecting means; and (c) closeable access means for closing the top face of the straining means and providing selective access to the interior of the straining means.