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US 6,327,826 B1Granted
Structural frame member
AssigneeLorient Polyproducts Limited
InventorRobert McGowan Mann
Life of this patent
Estimating the term…
Abstract
A frame assembly includes a non-combustible rigid filler sheet supported within a surrounding support frame made from lengths of a structural frame member joined together. The structural frame member has an elongate body extruded from a heat meltable material and has longitudinally extending cavities. Intumescent material is located in selected cavities.
Claims15
A frame assembly comprising
- a non-combustible rigid filler sheet supported within a surrounding support frame, the support frame comprising a plurality of structural frame members joined together,
- each structural frame member including an elongate body extruded from a heat meltable material which melts or softens under fire conditions,
- the body including a plurality of longitudinally extending cavities and intumescent material located in selected cavities, wherein the intumescent material is encapsulated in an extruded sheath,
- the intumescent material under fire conditions forming a foamed intumesced material which acts to provide structural support for the filler sheet after softening or melting of the heat meltable material.
1 more element
A structural frame member for use in the construction of a support frame in a surround, the structural frame member including
- an elongate body extruded from a heat meltable plastics material,
- the body having an outer side which in use faces the surround and an inner side located opposite to said outer side and a plurality of longitudinally extending cavities located between said inner and outer sides of said body,
- a non-combustible rigid reinforcing member housed within one of said cavities and intumescent material located between said reinforcing member and said inner and/or outer side.
A method of producing a structural frame member for use in a surround including
- extruding a frame body, said frame body having an outer side adapted to face the surround and an inner side located opposite to said outer side, from a heat meltable plastics material so as to include longitudinally extending cavities located between said inner and outer sides of the body, and subsequently
- inserting a non-combustible reinforcing member into one of said cavities and inserting intumescent material so as to be located between said reinforcing member and said inner and/or outer side.
A frame assembly comprising a non-combustible rigid filler sheet supported within a surrounding support frame,
- the support frame comprising a plurality of structural frame members joined together,
- the structural frame member including an elongate body extruded from a heat meltable material which melts or softens under fire conditions,
- the body including a plurality of longitudinally extending cavities and intumescent material located in selected cavities,
- the intumescent material under fire conditions forming a foamed intumesced material which acts to provide structural support for the filler sheet after softening or melting of the heat meltable material,
- wherein the intumescent material is located in primary cavities positioned directly inbetween the edge of the filler sheet and a surrounding supporting structure to which the support frame is secured in use,
- the amount of intumescent material within the primary cavities being such that, on intumescence, the foamed intumescent material acts to provide a compressive force on the filler sheet for providing structural support for the filler sheet after softening/melting of the heat meltable material,
- wherein a non-combustible rigid reinforcing member is located in one of said primary cavities.
4 more elements
A frame assembly comprising:
- a non-combustible rigid filler sheet supported within a surrounding support frame, the support frame comprising a plurality of structural frame members joined together,
- each structural frame member including an elongate body extruded from a heat meltable material which melts or softens under fire conditions,
- the body including a plurality of longitudinally extending cavities and intumescent material located in selected cavities, wherein the intumescent material is encapsulated in an extruded sheath,
- wherein the intumescent material is located in primary cavities positioned directly inbetween the edge of the filler sheet and a surrounding supporting structure to which the support frame is secured in use,
- the intumescent material under fire conditions forming a foamed intumesced material which acts to provide structural support for the filler sheet after softening or melting of the heat meltable material,
- the amount of intumescent material within the primary cavities being such that on intumescence, the foamed intumescent material acts to provide a compressive force on the filler sheet for providing structural support for the filler sheet after softening/melting of the heat meltable material.
3 more elements
Dependencies are inferred from the claim text.