| 摘要 |
A street cleaner suction hose assembly 6, 6' has a flexible hose 60, 60' with a nozzle 62, 62' at one end. The nozzle 62, 62' is rigid, having a handle 50, 50' at its rear end and a passage 70 for cleaning fluid. The nozzle 62, 62' is formed integrally with the remainder of the hose 60, 60' by deforming an external helical reinforcement member 64, 64' of thermoplastic material into a continuous outer layer that is substantially rigid. Rigid regions 141 to 144 along a flume extraction hose 104 can be made in the same way. <IMAGE> |
