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US 5,579,618 AGranted
Composite framing member construction for windows and doors
OwnerHarry M. Riegelmaninventor
Life of this patent
Estimating the term…
Abstract
A unitary composite frame member of two or more structural elements. A first and a second of the elements each contributes strength to the member. The second element, a plastic, encloses the first element on essentially all surfaces along the length of the first element, and is molded to itself through openings in the first element. The first element is discontinuous in that it is two walls attached lengthwise, and a third wall parallel to them and separate from them. In one embodiment, the third wall and one of the two walls intersect laterally.
Claims13
In an improved inflexible substantially straight, structural frame member of predetermined shape, for windows, doors or the like assemblies, said frame member comprising:
- a first elongated element having a length, at least one surface, and being substantially non-hollow in transverse cross section, said first element being a metal, and being inflexible and structural in nature, for contributing structural strength to said frame member,
- a second element, said second element being a plastic, and being inflexible, structurally strong independently of said first element, comprising the shape of the frame member, and enclosing said first element on essentially all surfaces along its length in a composite, unitary molding with said first element,
- said first element comprising a first wall substantially the length of said first element, and a second wall, said first wall having a first side, a front and a back, and said second wall having a first side, a front and a back,
- said second wall being connected on its first side to the first side of said first wall in a substantially continuous joining, substantially alone the length of said first wall, and angled from said first wall,
- a first plurality of openings through said first wall, enclosed within said first wall, and exclusive of said second wall,
- said second element being molded to itself from the front to the back of said first wall through said first plurality of openings,
- the improvement comprising said first element further being discontinuous in that it comprises a third wall being essentially separate from said first and second walls, and being generally parallel with said first and second walls substantially along the length of said first wall, as parallel strips.
4 more elements
In an improved inflexible substantially straight, structural frame member of predetermined shape, for windows, doors or the like assemblies, said frame member comprising:
- a first elongated element having a length, at least one surface, and being substantially non-hollow in transverse cross section, said first element being a metal, and being inflexible and structural in nature, for contributing structural strength to said frame member,
- a second element, said second element being a plastic, and being inflexible, structurally strong independently of said first element, comprising the shape of the frame member, and enclosing said first element on essentially all surfaces along its length in a composite, unitary molding with said first element,
- said first element comprising a first wall substantially the length of said first element, and a second wall, said first wall having a first side, a front and a back, and said second wall having a first side, a front and a back,
- said second wall being connected on its first side to the first side of said first wall in a substantially continuous joining, substantially along the length of said first wall, and angled from said first wall,
- a first plurality of openings through said first wall, enclosed within said first wall, and exclusive of said second wall,
- said second element being molded to itself from the front to the back of said first wall through said first plurality of openings,
- the improvement comprising said first element further being discontinuous normal to the length in that it comprises a third wall being essentially separate from said first and second walls, and being generally parallel with said first and second walls substantially along the length of said first wall, as parallel strips.
4 more elements
In an improved inflexible substantially straight, structural frame member of predetermined shape, for windows, doors or the like assemblies, said frame member comprising:
- a first elongated element having a length, at least one surface, and being substantially non-hollow in transverse cross section, said first element being a metal, and being inflexible and structural in nature, for contributing structural strength to said frame member,
- a second element, said second element being a plastic, and being inflexible, structurally strong independently of said first element, comprising the shape of the frame member, and enclosing said first element on essentially all surfaces along its length in a composite, unitary molding with said first element,
- said first element comprising a first wall substantially the length of said first element, and a second wall, said first wall having a first side, a front and a back, and said second wall having a first side, a front and a back,
- said second wall being connected on its first side to the first side of said first wall in a substantially continuous joining, substantially along the length of said first wall, and angled from said first wall,
- a first plurality of openings through and enclosed within a wall of said first element, and exclusive of adjacent walls of said first element,
- said second element being molded to itself from the front to the back of the wall containing said first plurality of openings, through said first plurality of openings,
- the improvement comprising said first element further being discontinuous in that it comprises a third wall being essentially separate from said first and second walls, and being generally parallel with said first and second walls substantially along the length of said first wall, as parallel strips.
4 more elements
In an improved inflexible substantially straight, structural frame member of predetermined shape, for windows, doors or the like assemblies, said frame member comprising:
- a first elongated element having a length, at least one surface, and being substantially non-hollow in transverse cross section, said first element being a metal, and being inflexible and structural in nature, for contributing structural strength to said frame member,
- a second element, said second element being a plastic, and being inflexible, structurally strong independently of said first element, comprising the shape of the frame member, and enclosing said first element on essentially all surfaces along its length in a composite, unitary molding with said first element,
- said first element comprising a first wall substantially the length of said first element, and a second wall, said first wall having a first side, a front and a back, and said second wall having a first side, a front and a back,
- said second wall being connected on its first side to the first side of said first wall in a substantially continuous joining, substantially along the length of said first wall, and angled from said first wall,
- a first plurality of openings through and enclosed within a wall of said first element, and exclusive of adjacent walls of said first element,
- said second element being molded to itself from the front to the back of the wall containing said first plurality of openings, through said first plurality of openings,
- the improvement comprising said first element further being discontinuous normal to the length in that it comprises a third wall being essentially separate from said first and second walls, and being generally parallel with said first and second walls substantially along the length of said first wall, as parallel strips.
4 more elements
Dependencies are inferred from the claim text.