Fire protection element having bimetal
AssigneeHilti Aktiengesellschaft
InventorsAndreas Ahlers, Sebastian Simon
Life of this patent
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Abstract
A fire protection element can be used for sealing a combustible body, which penetrates an opening in a wall or ceiling, in the event of a fire. The fire protection element has a belt- shaped carrier from the edge of which tongues protrude transversely to the longitudinal direction of said carrier. The tongues are connected to the belt-shaped carrier, at least a significant proportion of the tongues are formed of a bimetal, and the tongues can move in one direction under the effect of heat. A fire protection material is applied to at least one side of the tongues. Furthermore, a method can be used for sealing a combustible body, which penetrates an opening in a wall or ceiling, in the event of a fire.
Claims20
A fire protection element for sealing a combustible body, which penetrates an opening in a wall or ceiling, in the event of a fire, wherein the fire protection element has a belt-shaped carrier from an edge of which tongues protrude transversely to a longitudinal direction of said belt-shaped carrier,
- wherein the tongues are connected to the belt-shaped carrier and are separated from one another by slits,
- wherein at least 50% of the tongues is formed of a bimetal which can move in one direction under the effect of heat, wherein the bimetal comprises two layers of metals having different coefficients of thermal expansion,
- wherein under the effect of heat the tongues by themselves move to close the opening, and
- wherein a fire protection material is applied to the tongues,
- wherein the fire protection material is applied only to a side of the tongues which has the layer of metal having a lower coefficient of thermal expansion and is an inside surface.
Dependencies are inferred from the claim text.