| 摘要 |
1493007 Curing braided rubber hose GOODYEAR TIRE & RUBBER CO 2 Feb 1976 [12 May 1975] 19918/75 Heading B5A [Also in Division F2] In making a hose a layer of uncured rubber 17 is supported on a mandrel and surrounded by reinforcement filaments such as braided groups 18 and then cured the uncured rubber layer being provided with recesses to accommodate expansion of the mandrel and/or expansion of the uncured rubber and/or shrinkage of the filaments, the dimensions of the recesses being such as to prevent rubber being exuded above the reinforcement filaments on curing. The recesses are on the surface of the layer 17 beneath the reinforcement and may be V-shaped 19, U-shaped, square 24 or heart shaped, and may take the form of longitudinal grooves formed during extrusion of the rubber layer. More than one layer of reinforcement filaments may be provided separated by an additional layer of uncured rubber which may also be grooved. |
