| 摘要 |
1298589 Laminated conveyer belt GOODYEAR TIRE & RUBBER CO 4 Sept 1970 [1 Oct 1969] 42450/70 Heading B5N [Also in Division B8] In a conveyer of the type comprising upper and lower endless conveyers arranged to convey material therebetween along an inclined path, the upper conveyer 14 comprises a layer 24 of elastomeric material with lead 25 or other ballast material uniformly dispersed therein such that the layer has a specific gravity of at least 3À00. The upper conveyer further comprises a second layer 27 with a centre portion 28 of a number of plies of square woven textile fabric 29, fibreglass cards or steel cables and lateral sections 30 of elastomeric material which may also be weighted with lead &c. Side or edge portions 32 of elastomeric material, which may be weighted, or metal are arranged to abut the lower conveyer and form a seal therewith to contain the material between the belts. The upper belt is further reinforced by two layers of bias-laid fabric 36 and that surface remote from the edge portions and the edge portions may have a layer 26, 33 respectively of abrasion resistant elastomeric material. In an alternative embodiment, Fig. 6, not shown, the edge portions are dispensed with and in a further embodiment, Fig. 7 (not shown), the first layer (40) is tapered towards the edges of the belt. |
