Patent ID: 7726174

Claim:
An air bubble detector for detecting the presence of air in a conduit comprising: an air bubble sensor having an emitter and a receiver, and an adjustment mechanism for enabling the emitter and the receiver to be moved toward and away from each other to thereby accommodate conduits of different sizes, the emitter and the receiver being attached to the adjustment mechanism so that the emitter and the receiver maintain alignment with one another so that the signal transmitted from the emitter is properly received by the receiver for any of a plurality of different conduit sizes; and wherein the adjustment mechanism comprises a joint for selectively increasing and decreasing the distance between the emitter and the receiver, a first pivotable mount for holding the emitter and a second pivotable mount for holding the receiver, and wherein the first and second pivotable mounts pivot to change the angular orientation of the emitter and receiver without substantially changing the distance between the emitter and receiver so that the emitter and receiver maintain alignment with each other for a variety of conduit sizes.