Drainage system and method of draining extruded window frame sil

Details Drainage system and method of draining extruded window frame sil Drainage system and method of draining extruded window frame sil

1991-02-26

1992-06-23

Luebke, Renee S.

52235, 52303, 49408, 49471, E06B 714

Patent

active

051232120

ABSTRACT:
A drainage system and method of draining extruded window sill frames is disclosed. The drainage system includes a drain cap which provides two separate drain paths for the sill. The drain cap is installed in a drainage orifice in the bottom edge of the outer sill face. The drain cap includes a ramp portion for directing water draining from the front of the sill through one of the drain paths, water from the rear of the sill being permitted to drain through the other drain path. The drain cap is installed using a method whereby a drainage path is formed through any longitudinal portions in the sill which are intermediate the drainage orifice in the bottom of the outer sill face and drain apertures in the sill surface. The drainage path is preferably formed using a horizontal drilling machine equipped with a drill bit having at least two drill diameters for piercing two concentric holes in a single pass. Alternatively, two or more bits are used for drilling two or more holes which are acentric but coextensive.

REFERENCES:
patent: 3466819 (1969-09-01), Giger
patent: 3503169 (1970-03-01), Johnson et al.
patent: 4003171 (1977-01-01), Mitchell
patent: 4156988 (1979-06-01), Grover et al.
patent: 4691487 (1987-09-01), Kessler
patent: 4819405 (1989-04-01), Jackson
patent: 5044121 (1991-09-01), Harbom et al.

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