Composite fire stop device

Details Composite fire stop device Composite fire stop device

A - Human Necessities

62

C

189/5

A62C 3/00 (2006.01)

Patent

CA 1273302

ABSTRACT OF THE DISCLOSURE A fire stop collar assembly comprises a plastics sleeve (2) which fits over a plastics pipe. An annular collar (4) of intumescent material is supported by the external surface of the sleeve (2). A tension spring (8) is held under tension on an end of the sleeve (21), with a sheath of refractory fabric (6) being interposed between the spring (8) and the sleeve (2). Upon softening of the pipe and sleeve (2) in the event of a fire, the spring (8) will act to constrict the sleeve and the pipe within the refractory sheath.

531474

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