| 摘要 |
A combination telescopic boat hook/bilge pump which includes a novel locking device is described. The inner tube is provided with a washer at the proximal end which acts with the outer tube as a piston. The ball tip distal end of the boat hook is provided with an axial bore so that water can be sucked into the outer tube for subsequent discharge. For use as a boat hook the inner tube is extended until a pair of spring loaded pins mounted in the inner tube at the proximal end thereof releasably engage any two of three circumferential slots provided adjacent the proximal end of the outer tube so as to provide an extended rigid shaft.
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