| 摘要 |
A fish line sinker produced from a length of coiled metal spring. The coiled spring windings are contiguous and resiliently permit stretching and bending, i.e., the spring snaps back when released. The spring windings are tightly coiled and strongly resist crushing. Thus when wedged between rocks, a pulling action that tends to drive the spring deeper into the wedge (by the fisherman pulling on the line) is resisted by the noncrushable cross section. Bending and/or stretching does occur and upon release, the snap back action frees the sinker.
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