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Invention

发布时间:2019-03-03 02:14:09来源:未知点击:

By Barry Fox INFLATABLE ROPE Have you ever tried to throw a line from a boat to a jetty, or fling a rope up a rock face to a fellow climber? It could get much easier if you use the new self-hardening rope being patented by David Chroman of Florida (WO 2004/092463). Chroman’s rope has a hollow plastic strand embedded in its weave. Normally, the rope is as flexible as any ordinary rope. But when you pump air into the tube from a handheld bladder or a compressed air source, using a one-way valve,