Folding and locking drafting aid apparatus and method
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United States of America Patent
Stats
-
Apr 23, 1996
Grant Date -
N/A
app pub date -
Sep 12, 1994
filing date -
Sep 12, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A folding drafting aid apparatus includes a planar member having a first and second planar member ends and a first planar member side and a second planar member side, and being foldable at a hinge structure so that the second planar member side pivots face to face against itself; a flexible, resilient first tab having a free end and retained on a first tab structure; and a flexible, resilient second tab having a tab free end and retained on a second tab structure; where the tabs are positioned relative to each other so that when the planar member is folded at the hinge structure to pivot the second planar member side face to face against itself, one tab overlays the other tab and so that pressing one tab against the other tab causes both tabs to bend until the free end of the one tab crosses over the free end of the other tab and remains in this crossed-over position to hold the planar member in the folded position.
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Cited Art Landscape
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