# US 5,347,767 A · Fire retardant sleeve > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,347,767 A - Document ID: US5347767A - Status: Granted - Kind: A - Application number: 08/080,447 - Filed: 1993-06-18 - Granted: 1994-09-20 - Earliest claimed: 1992-01-29 - Inventors: Rudolf Roth - Web page: https://patentgrep.com/patent/US5347767A ## CPC - F16L 5/04: to form a firebreak device - A62C 2/065: {having as the main closure device materials, whose characteristics undergo an irreversible change under high temperatures, e.g. intumescent} - H02G 3/22: Installations of cables or lines through walls, floors or ceilings, e.g. into buildings - F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL - A62C: FIRE-FIGHTING (fire-extinguishing compositions, use of chemical substances in extinguishing fires A62D1/00; spraying, applying liquids or other fluent materials to surfaces in general B05; alarm arrangements G08B, e.g. fire alarms actuated by smoke or gases G08B17/10) - H02G: INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES ## Abstract Generally, the invention relates to an apparatus or device for use in walls, ceiling, and floor of a multi-storied building that is capable of sealing a raceway used for placement of wires and cables, wherein the improvement allows an installer of the raceway to couple additional sections of the raceway at a convenient location remote from the device. The instant invention is a fire/smoke protection sleeve assembly having a tubular housing used in combination with a impervious collar housing thermal expansive material. A raceway slidably fits within the first housing allowing the raceway to be slidably extendible therethrough for coupling on either side of the device. In the event of a high induction of heat the thermal expansive material of the instant invention expands causing the raceway to collapse thus prevent fire and/or smoke from traveling to area inapposite the situation. ## Claims ### Claim 1 A smoke and fire protection assembly providing a heat sealable raceway through a concrete floor or wall mounting location, said assembly comprising: at least one intumescent thermal expansion member having a centrally disposed aperture positioned within a heat conductive shield defined by an outer side wall; a tubular sleeve defined by a wall of minimal thickness having an inner surface forming an interior chamber and an outer surface operatively associated with said aperture, said sleeve having a length sized to accommodate thickness of a mounting location; means for independently securing said tubular sleeve to the mounting location, wherein said means for independently securing said tubular sleeve is a key out integrated into said outer surface of said tubular sleeve; and a raceway formed from a pipe having an interior chamber defined by a wall of nominal thickness and an inlet and outlet demarcating a length greater than said length of said sleeve, said pipe insertable into said sleeve forming a raceway for carrying continuous line items from one room to another, said inlet and outlet of said pipe available for coupling additional raceways at a distance separate from the mounting location. ### Claim 2 (depends on 1) A sleeve assembly according to claim 1 wherein said conductive shield defines a circular section when viewed normal to the top of said sleeve. ### Claim 3 (depends on 1) A sleeve assembly according to claim 1 wherein said means for independently securing said sleeve to the mounting location is further defined as a key out integrated into said outer surface of said sleeve. ### Claim 4 (depends on 1) A sleeve assembly according to claim 1 wherein said tubular sleeve is constructed of plastic that is deformable upon subjection to heat. ### Claim 5 (depends on 1) A sleeve assembly according to claim 1 wherein said conductive shield provides controlled inwardly radial expansion of said member. ### Claim 6 (depends on 1) A sleeve assembly according to claim 1 wherein said tubular sleeve is flush with each side surface of a mounting location. ### Claim 7 (depends on 1) A sleeve assembly according to claim 1 wherein said conductive shield includes a means for attaching said shield to a side surface of a mounting location. ### Claim 8 (depends on 1) A sleeve assembly according to claim 1 wherein said pipe is integral with said sleeve. ### Claim 9 A smoke and fire protection assembly providing a heat sealable raceway through a concrete floor or wall mounting location, said assembly comprising: at least one intumescent thermal expansion member having a centrally disposed aperture positioned within a heat conductive shield defined by an outer side wall for providing controlled inwardly radial expansion of said member; a heat deformable plastic tubular sleeve defined by a wall of minimal thickness having an inner surface forming an interior chamber and an outer surface operatively associated with said aperture, said sleeve having a length sized to accommodate thickness of a mounting location and a key out integrated onto said outer surface of said sleeve; and a raceway formed from a pipe having an interior chamber defined by a wall of nominal thickness and an inlet and outlet demarcating a length greater than said length of said sleeve, said pipe insertable into said sleeve forming a raceway for carrying continuous line items from one room to another, said inlet and outlet of said pipe available for coupling additional raceways at a distance separate from the mounting location.