Roof flashing
AssigneeOatey Co.
InventorDavid E. Kifer
Life of this patent
Estimating the term…
Abstract
A roof flashing and method of making same in which both the collar and base member of the flashing are made of elastomeric material. The base member is molded first and has an opening therein surrounded by a stepped flange provided with a series of circumferential slots therein. The collar is molded onto the base member during a subsequent molding operation in which the material of the collar is injected through the slots and completely around the top, bottom and inner side edge of the flange to form a series of closed loops thus providing a positive mechanical lock between the collar and base member. Also, the heat of the elastomeric material of the collar during the second stage molding process causes some melting of the elastomeric material of the base member whereby the collar and base are also fused together.
Claims9
A roof flashing comprising a base member adapted to be secured to a roof, and a collar for establishing a weather-proof seal with an upstanding pipe passing through an opening in the roof, both said base member and collar being made of a plastic material, said base member having a truncated, generally conical dome portion with an opening at its apex and a radially inwardly extending flange portion surrounding said opening, said flange portion having a plurality of circumferentially spaced slots therethrough and a radially outer surface, and said collar having a truncated, generally conical portion and a lower, generally radially outwardly extending annular connecting portion molded to said flange portion of said base member, said connecting portion having an upper portion overlying an upper surface of said flange portion, a radially outer depending portion overlying said radially outer surface of said flange portion, a radially inner depending portion extending around a radially inner edge of said flange portion, and an intermediate depending portion radially between said radially inner and outer depending portions, said intermediate depending portion extending through said slots in said flange portion and radially underneath said flange portion.
Dependencies are inferred from the claim text.