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US 5,325,648 AGranted
Composite exterior door structure
AssigneeMichel Hebert
InventorJacques Menard
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AssigneeMichel Hebert
InventorJacques Menard
Estimating the term…
A composite exterior door structure comprising an inner frame of transversely connected elongated structural members formed of synthetic low thermally conductive material. The structural members have opposed parallel flat side walls and edge walls, the latter being formed with connecting channels. The structural members are interconnected to form a rectangular frame. Connectors of low thermally conductive material are connected to the connecting channels of inner ones of the edge walls of the structural members. An outer metal door covering is connected over an outer one of at least some of the opposed parallel flat side walls of the structural members and the connectors by displaceable connections to permit the outer door covering to shift due to expansion and contraction independently of the structural members. An inner door covering is immovably secured to an inner one of the opposed parallel flat walls and thermally insulated from the outer door covering.
A composite exterior door structure comprising an inner frame of transversely connected elongated structural members formed of synthetic low thermally conductive material, said structural members having opposed parallel flat side walls and edge walls, said edge walls being formed with connecting means, means to interconnect said structural members together to form a rectangular frame, connectors of low thermally conductive material connected to said connecting means of inner ones of said edge walls of said structural members, an outer metal door covering connected over an outer one of at least some of said opposed parallel flat side walls of said structural members forming said rectangular frame by displaceable connections, said connections being concealed behind said metal door covering and permitting said outer door covering to shift due to expansion and contraction thereof while remaining connected to said structural members, and an inner door covering immovably secured to said rectangular frame and thermally insulated from said outer door metal covering.
A door sill in combination with a bottom step plate of an exterior door frame, said door sill comprising a metal support plate having an outwardly downward sloping elevated upper surface, a connector formed in a rear edge of said support plate and defining an open ended edge channel for receiving captive therein an edge portion of a sill insert member secured on said upper surface, said step plate being formed of synthetic material and having an edge connector secured in said open ended edge channel of said metal support plate.
Dependencies are inferred from the claim text.