PLANK UNIT FOR INSERTING INTO A FRAME UNIT OF SUPPORT APPARATUS
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United States of America Patent
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app pub date -
Nov 30, 2015
filing date -
Aug 24, 2012
priority date (Note) -
Abandoned
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Abstract
A plank unit for inserting into a frame unit is disclosed. The frame unit has a plurality of mortises vertically incrementally arranged at a lateral adjoining edge of a first lateral surface and a second lateral surface thereof. The plank unit includes a support portion and a tenon extending from the support portion configured to be insertable into one of the mortises through the first lateral surface. The support portion is configured to protrude from the second lateral surface upon insertion. The support portion incorporates a biased height arrangement that provides higher degree of height adjustment variation through different insertion orientations, and allows two plank units to be arranged in a vertically adjacent configuration to structurally abut against each other, thereby enhancing structural integrity of the support portion and increasing the load carrying capacity.
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