| 摘要 |
A collapsible downrigger arm assembly is disclosed which is configured for use with an associated downrigger system. The arm assembly includes a plurality of elongated, cylindrical arm sections positionable in longitudinally aligned, end-to-end relationship. The arm sections can be conveniently and releasably secured together by a releasable joint construction which is provided between each adjacent pair of the arm sections. Each joint construction has been particularly configured to resist vibration-induced loosening of the joint and bending flexure of the arm assembly, and thus includes a mating threaded shank and bore arrangement, a vibration-resisting support boss and a mating socket, and associated cooperating locking surfaces which are urged into abutting relationship attendant to disposition of the threaded shank in the associated threaded bore.
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