| 摘要 |
A pipe coupling assembly (10, 46, 64) and method of manufacturing the same involves the use of a pipe coupling (12, 50, 66) with an intumescent collar (14, 68) and a metallic band (16, 56, 70) wrapped thereabout at one end thereof. The metallic band has overlapping ends (36, 38) which are held together by elongated fasteners (18, 60) passing through overlapping portions and into the intumescent wrap. The pipe coupling assembly including a tubularly-shaped main body, an intumescent collar, and a metallic band are assembled as a unit in a factory to be later placed in a concrete form to have concrete poured thereabout. A heat receiving edge of the metallic band receives heat from a fire in a space below a barrier in which the pipe coupling assembly is embedded and conducts it to the outer periphery of the intumescent collar. In one embodiment, a first end edge of a metallic band (106) has radially-directed heat receiver tabs (114) extending across a first end edge (116) of an intumescent collar (104) located at a first end ( 110) of a pipe coupling (102) to be mounted to a concrete form (112). The other end edge (128) of the metallic band (106) is spaced from a second end edge (118) of the intumescent collar. The second end edge of the intumescent collar is abutted firmly against a protective flange (109) which is molded as part of the pipe coupling and which covers the whole second end edge of the intumescent collar.
|
