Fire retardant sleeve

Details Fire retardant sleeve Fire retardant sleeve

1993-06-18

1994-09-20

Friedman, Carl D.

Static structures (e.g., buildings)

Controlled by condition responsive means

52232, 522208, F16K 1738

Patent

active

053477677

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.

REFERENCES:
patent: 4221092 (1980-09-01), Johnson
patent: 4538389 (1985-09-01), Heinen
patent: 4796401 (1989-01-01), Wexler
patent: 4848043 (1989-07-01), Harbeke
patent: 4850385 (1989-07-01), Harbeke
patent: 4918761 (1990-04-01), Harbeke
patent: 5105592 (1992-04-01), MacMillan et al.

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