Fire barrier device

Claim 2

A fire barrier device for providing fire and smoke stoppage in penetrations through walls, floors, partitions and ceilings comprising: (a) a sleeve of intumescent sheet material lining the interior of said penetration and affixed to the wall of said penetration, said sleeve occupying only a minor portion of said penetration, and said intumescent sheet material operable to expand when said penetration is subjected to elevated temperatures and substantially fill said lined penetration; and (b) at least one end cap positioned at one end of said sleeve, said end cap capable of being penetrated by pipes or cables passing through said lined penetration and conforming around said pipes or cables, and said end cap capable of sealing said penetration against the passage of flames, smoke and gases through said penetration from one end to the other; said fire barrier device being capable of allowing any number and most sizes of pipes or cables to be placed, removed, or replaced without disruption of said intumescent sleeve material, and said fire barrier device providing a wide clearance between said pipes or cables and said intumescent sleeve.

Claim 3

The device of claim 1 wherein said intumescent sheet material comprises an alkali metal silicate as the intumescent component.

Claim 4

The device of claim 1 wherein said intumescent sheet material comprises an intumescent component in granular form, an organic binder component, an organic char-forming component and fillers and wherein said sheet material is coated with an elastomeric layer.

Claim 5

The device of claim 1 wherein said intumescent sheet material comprises an intumescent component in granular form, an organic binder component, an organic char-forming component and fillers; and wherein the surface of said sheet facing the interior of said penetration has a restraining layer laminated thereto.

Claim 6

The device of claim 1 wherein said end cap has a plurality of radial cuts, all but one of said cuts terminating within the periphery of said cap such that said cap is divided into a plurality of segments, each of said segments being juxtaposed to another segment to provide said cap with no voids therein, said segments capable of being displaced to permit the passage of a cable or pipe past said segments and said segments being capable of being manipulated into conformance about said cable or pipe.

Claim 7

The device of claim 1 wherein said end cap contains at least one aperture to permit passage of at least one cable or pipe therethrough wherein said aperture has a cross sectional area equal to the cross sectional area of said cable or pipe.

Claim 8

The device of claim 1 wherein said end cap is fabricated from an intumescent sheet material comprising an alkali metal silicate intumescent component.

Claim 9

The device of claim 7 wherein said intumescent sheet material is coated with an elastomeric material on at least one major surface.

Claim 10

The device of claim 7 wherein said intumescent sheet material has a restraining layer laminated to at least one major surface thereof.

Claim 11

The device of claim 1 wherein said end cap is fabricated from a flameproof elastomeric material.

Claim 12

The device of claim 1 wherein said intumescent sheet material is affixed to said wall of said penetration by adhesive bonding.

Claim 13

The device of claim 3 wherein said intumescent sheet material is affixed to said wall of said penetration by heat bonding during vulcanization of said intumescent sheet.

Claim 14

The device of claim 1 wherein said intumescent sheet material is affixed to said wall of said penetration by mechanical locking means.

Claim 15

The device of claim 1 containing at least one intumescent partition placed within said intumescent sleeve to divide said penetration into substantially equal areas.

Claim 16

The device of claim 14 wherein said intumescent partition comprises an alkali metal silicate and wherein said intumescent partition has a restraining layer laminated to both major surfaces.

Claim 20

The method of claim 17 wherein said intumescent sheet material comprises an intumescent component in granular form, an organic binder component, an organic char-forming component and fillers and wherein said sheet material is coated with an elastomeric layer; and wherein said method includes the step of affixing said sleeve to said interior wall of said conduit by heat bonding during vulcanization of said intumescent sheet.

Claim 21

A fire barrier device for providing fire and smoke stoppage in penetrations through walls, floors, partitions and ceilings comprising: (a) a sleeve of intumescent sheet material lining the interior of said penetration and affixed to the wall of said penetration, said intumescent sheet material operable to expand when said penetration is subjected to elevated temperatures and substantially fill said lined penetration; said intumescent sheet material being affixed to said wall of said penetration by mechanical locking means comprising ribs oriented on the outer surface of said sleeve such that when said sleeve is pressed into said penetration said ribs deform and conform to said wall of said penetration to hold said sleeve in place in said penetration by the force of friction, said ribs being constructed from a rubbery material having a Shore A durometer of about 40-70; and (b) at least one end cap positioned at one end of said sleeve, said end cap capable of being penetrated by pipes or cables passing through said lined penetration and conforming around said pipes or cables and said end cap capable of sealing said penetration against the passage of flames, smoke and gases through said penetration from one end to the other.

Claim 22

A fire barrier device for providing fire and smoke stoppage in penetrations through walls, floors, partitions and ceilings comprising: (a) a sleeve of intumescent sheet material lining the interior of said penetration and affixed to the wall of said penetration, said intumescent sheet material operable to expand when said penetration is subjected to elevated temperatures and substantially fill said lined penetration; said intumescent sheet material being affixed to said wall of said penetration by mechanical locking means comprising ribs oriented on the outer surface of said sleeve such that when said sleeve is pressed into said penetration said ribs deform and conform to said wall of said penetration to hold said sleeve in place in said penetration by the force of friction, said ribs being constructed from a rubbery material having a Shore A durometer of about 40-70; and (b) at least one end cap positioned at one end of said sleeve, said end cap capable of being penetrated by pipes or cables passing through said lined penetration and conforming around said pipes or cables and said end cap capable of sealing said penetration against the passage of flames, smoke and gases through said penetration from one end to the other.

Claim 23

A fire barrier device for providing fire and smoke stoppage in penetrations through walls, floors, partitions and ceilings comprising: (a) a sleeve of intumescent sheet material lining the interior of said penetration and affixed to the wall of said penetration, and at least one intumescent partition placed within said lined penetration to divide said penetration into substantially equal areas, said intumescent partition being rectangular in shape and having one pair of tabs at one end thereof such that said partition is T-shaped, said tabs extending outwardly a distance equal to the thickness of said sleeve, and wherein said sleeve is provided with at least one pair of slots at one end thereof such that said tabs of said partition fit therein; said intumescent material operable to expand when said penetration is subjected to elevated temperatures and substantially fill said lined penetration; and (b) at least one end cap positioned at one end of said sleeve, said end cap capable of being penetrated by pipes or cables passing through said lined penetration and conforming around said pipes or cables and said end cap capable of sealing said penetration against the passage of flames, smoke and gases through said penetration from one end to the other.

Claim 24

A fire barrier device for providing fire and smoke stoppage in penetrations through walls, floors, partitions and ceilings comprising: (a) a sleeve of intumescent sheet material lining the interior of said penetration and affixed to the wall of said penetration, and at least one intumescent partition placed within said lined penetration to divide said penetration into substantially equal areas, said intumescent partition being rectangular in shape and having one pair of tabs at one end thereof such that said partition is T-shaped, said tabs extending outwardly a distance equal to the thickness of said sleeve, and wherein said sleeve is provided with at least one pair of slots at one end thereof such that said tabs of said partition fit therein; said intumescent material operable to expand when said penetration is subjected to elevated temperatures and substantially fill said lined penetration; and (b) at least one end cap positioned at one end of said sleeve, said end cap capable of being penetrated by pipes or cables passing through said lined penetration and conforming around said pipes or cables and said end cap capable of sealing said penetration against the passage of flames, smoke and gases through said penetration from one end to the other.

Claim 25

A fire barrier device for providing fire and smoke stoppage in penetrations through walls, floors, partitions and ceilings comprising: (a) a sleeve of intumescent sheet material lining the interior of said penetration and affixed to the wall of said penetration, said intumescent material operable to expand when said penetration is subjected to elevated temperatures and substantially fill said lined penetration; (b) at least one end cap positioned at one end of said sleeve, said end cap capable of being penetrated by pipes or cables passing through said lined penetration and conforming around said pipes or cables and said end cap capable of sealing said penetration against the passage of flames, smoke and gases through said penetration from one end to the other; and (c) a riser/sidewall attached at one end of said sleeve so as to project from and be held around the periphery of said penetration, said riser/sidewall serving as a splash guard to prevent water from entering said penetration.

Claim 26

A fire barrier device for providing fire and smoke stoppage in penetrations through walls, floors, partitions and ceilings comprising: (a) a sleeve of intumescent sheet material lining the interior of said penetration and affixed to the wall of said penetration, said intumescent material operable to expand when said penetration is subjected to elevated temperatures and substantially fill said lined penetration; (b) at least one end cap positioned at one end of said sleeve, said end cap capable of being penetrated by pipes or cables passing through said lined penetration and conforming around said pipes or cables and said end cap capable of sealing said penetration against the passage of flames, smoke and gases through said penetration from one end to the other; and (c) a riser/sidewall attached at one end of said sleeve so as to project from and be held around the periphery of said penetration, said riser/sidewall serving as a splash guard to prevent water from entering said penetration.

Claim 29

The method of claim 22 wherein said method includes the step of affixing said sleeve to said interior wall of said penetration by adhesive bonding.

Claim 30

The method of claim 22 wherein said method includes the step of affixing said sleeve to said interior wall of said penetration by mechanical locking means.