Collapsible retriever ladder

作者: Jr. Zach McClendon

DOI:

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摘要: A collapsible retriever ladder generally includes a first platform, second supporting arms and clamping mechanism. The platform is pivotally attached to the so that can be closed. fold over as sandwiched between when mechanism secures upper edge of side boat having platforms secured thereto rotate inwardly for storage outwardly use.

参考文章(8)
Paul E. Hoy, Adjustable diving platform ,(1983)
Jack K Egbert, Portable gangplank and dock ,(1958)
Robert A. Wrigley, Stowing hinge for boat ladder ,(1975)
Roger P. Day, Boat platform ladder ,(1988)
Gary A. Zittrower, Alan L. Stinson, Roger L. Blevins, Diver's boarding ladder ,(1995)
Grieco Frank James, Grieco James Dominick, Holder for collapsible tubes ,(1963)
William R Reynolds, Portable gang plank ,(1961)