US Patent 7673661 Sensor system for a refrigerator dispenser

A sensing system for a refrigerator dispensing system is used to sense the presence, positioning, height and shape of a container placed in a dispensing well. When the presence of the container is sensed in the dispensing well and the container is properly positioned relative to a dispensing nozzle of the well, a dispensing operation can be performed. The actual dispensing operation is regulated based on the height and shape of the container. In this manner, dispensing operations can only be performed when a container is appropriately arranged in the dispensing well and the dispensing operation will be timely terminated based the size and shape of particular container employed.