Roof drain and method for making same

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 substantially cylindrical 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 substantially cylindrical 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 substantially circular strainer flange extending peripherally outwardly around the bottom edge of the side walls having an outside dimension sized to fit within the substantially cylindrical 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;
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• (c) closeable access means for substantially closing the top face of the straining means and providing selective access to the interior thereof.

A method for making a roof drain that drains water from a flat roof surface, said roof surface having a drainage pipe located there below, comprising the steps of:

• (a) forming connecting means for providing connections between the roof surface and the drainage pipe, the connecting means having a connector flange with centered recessed portion therein peripherally defined by a shoulder portion;
• (b) forming a straining means for straining debris from the water entering the drainage pipe, the straining means having side walls with a bottom edge and a strainer flange extending peripherally outwardly around the bottom edge of the side walls;
• (c) rotatably securely holding the straining means such that the strainer flange is accessible;
• (d) placing the connecting means against the strainer flange such that the strainer flange of the straining means is seated within the recessed portion of the connector flange;
• and
• (e) deforming the shoulder portion until the shoulder portion is crimped over the strainer flange, so as to non-removably rigidly couple the straining means to the connecting means.

A method for making a roof drain that drains water from a flat roof surface, said roof surface having a drainage pipe located there below, comprising the steps of:

• (a) forming a straining means for straining debris from the water entering said drain, the straining means having side walls with a bottom edge and a strainer flange extending peripherally outwardly around the bottom edge of the side walls;
• (b) forming connecting means for providing connections between the roof surface and the drainage pipe, the connecting means having a connector flange;
• (c) forming a centered recessed portion within said connector flange, said recessed portion being sized to receive the strainer flange of the straining means and said recessed portion being peripherally defined by a shoulder portion;
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• (d) with the strainer flange of the straining means placed within the recessed portion of the connector flange, deforming the shoulder portion until the shoulder portion is crimped over the strainer flange, so as to non-removably rigidly couple the straining means to the connecting means.

A roof drain that drains water from a flat roof surface, said roof surface having a drainage pipe located there below, said roof drain being formed by a method comprising the steps of:

• (a) forming a straining means for straining debris from the water entering said drain, the straining means having side walls with a bottom edge and a strainer flange extending peripherally outwardly around the bottom edge of the side walls;
• (b) forming connecting means for providing connections between the roof surface and the drainage pipe, the connecting means having a connector flange;
• (c) forming a centered recessed portion within said connector flange, said recessed portion being sized to receive the strainer flange of the straining means and said recessed portion being peripherally defined by a shoulder portion;
• and
• (d) with the strainer flange of the straining means placed within the recessed portion of the connector flange, deforming the shoulder portion until the shoulder portion is crimped over the strainer flange, so as to non-removably rigidly couple the straining means to the connecting means.