Automatic liquid level control means

Claim 1

A liquid level control means for use in combination with a drink dispensing machine including a liquid supply control means to supply liquid into a container to a predetermined level, said liquid level control means comprises a liquid level sensing probe means and a control circuit means, said control circuit means comprises a first switch means having a first and second position and a holding circuit having an active and inactive mode, said first switch means and said holding circuit coupled to an external voltage source, said liquid level sensing probe means comprises an elongated conductive probe including an upper element fixedly coupled to said control circuit means and a first lower element movably attached to said upper element, said holding circuit being activated when said first switch means is moved from said first position to said second position, said holding circuit actuating the liquid supply control means when activated, said liquid level sensing probe means disposed to engage liquid supplied into the container at a predetermined level, said liquid level sensing probe means electrically coupled to said control circuit means to deactuate said holding circuit when said liquid level sensing probe means engages liquid in the container to deactivate the liquid supply control means.