Patent ID: 7431283

Claim:
A card-feeding mechanism comprising: a card-delivering device for pushing a card of a card stack in a first direction; a card-receiving device for continuously pushing the card in the first direction; a transmission device positioned between the card-delivering device and the card-receiving device for engaging the card-delivering device and the card-receiving device when the transmission device is driven forwardly to simultaneously drive the card-delivering device and the card-receiving device, and for engaging the card-receiving device and disengaging from the card-delivering device when the transmission device is driven backwardly to drive the card-receiving device; a driver engaging the transmission device for driving the transmission device; and a sensor for detecting the pushed card, wherein when the sensor detects the pushed card, the transmission device stops driving the card-delivering device; wherein the card-delivering device comprises: a first roller positioned below the card stack for pushing the card in the first direction; a first gear positioned on an axle of the first roller; a second roller positioned below the card stack for pushing the card in the first direction; a second gear positioned on an axle of the second roller; a third gear positioned between the first gear and the second gear; a fourth gear positioned between the second gear and the transmission device for receiving a rotating force of the transmission device when engaging the transmission device; and a unidirectional bearing positioned inside the second gear for causing the second gear to drive the second roller to rotate when the transmission device drives the card-delivering device, and for causing the second roller not to drive the second gear to rotate when the transmission device does not drive the card-delivering device.