| 摘要 |
A vacuum hose comprises a plain rubber tube 12, which is stretched over helically coiled wire 14. The rubber tube 12 is not moulded to, nor bonded to, the coil 14. The resulting hose is light and flexible, yet resistant to buckling. The hose may be joined to a fume-extracting welding gun or torch 1 by screwing the wire 14 onto a helical groove 10 formed in the handle of the gun. Because the rubber cover 12 is not attached to the coil 14, it can be peeled back during screwing/unscrewing. The joint is very secure and robust, yet is free of protrusions such as clamps, etc, which might snag. <IMAGE> |
