Extension/retraction mechanism for checkstand with...

A - Human Necessities – 47 – F

Patent

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A47F 9/04 (2006.01) B65G 47/26 (2006.01)

Patent

CA 2413717

An extension/retraction mechanism for a take-away conveyor in a checkstand. The extension/retraction mechanism selectively stops and holds the telescoping take-away conveyor at the scan-and-bag position as the telescoping take-away conveyor is moving between walk-through and scan-and-pass positions. The extension/retraction mechanism includes a cam follower that is pivotally attached to the telescoping take- away conveyor for movement therewith. The cam follower rides within a cam track as the telescoping conveyor moves between the scan-and-bag, walk-through, and scan-and-pass positions. The cam track includes a series of turn surfaces so that the cam follower changes course as the telescoping take-away conveyor moves backward and forward. The cam track also includes at least one pocket for retaining the cam follower when the telescoping take-away conveyor is in the scan-and-bag position.

La présente concerne un mécanisme de sortie/rentrée pour point de contrôle équipé d'un convoyeur à système télescopique. Le mécanisme de sortie/rentrée arrête de manière sélective et maintient le convoyeur à système télescopique à la position balayage-et-emballage à mesure que ledit convoyeur se déplace entre les positions passage-direct et balayage-et-passage. Le mécanisme de sortie/rentrée comprend un galet de came qui est attaché de façon pivotante au convoyeur à système télescopique pour se déplacer avec celui-ci. Le galet de came se déplace dans une coulisse de came à mesure que le convoyeur à système télescopique se déplace entre les positions balayage-et-emballage, passage-direct et balayage-et-passage. La coulisse de came comprend une série de surfaces de virage de sorte que le galet de came vire à mesure que le convoyeur à système télescopique se déplace vers l'avant et vers l'arrière. La coulisse de came comprend également au moins une poche pour retenir le galet de came lorsque le convoyeur à système télescopique est en position balayage-et-emballage.

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