Product vending machine
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United States of America Patent
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Jun 25, 2013
Grant Date -
May 24, 2012
app pub date -
Mar 29, 2010
filing date -
Mar 30, 2009
priority date (Note) -
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Abstract
A product vending machine having a locking device, wherein a column of rollers, fitted along a guide with sufficient play to roll along the guide, is selectively engaged by one of a number of wedge members to eliminate the play and move the rollers into a compact configuration preventing insertion of the other wedge members; each wedge member being movable with a relative movable part, e.g. a tray or a door, of the machine.
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