Patent ID: 7770999

Claim:
An ultrasonic leak detector comprising: a leak detection microphone; a sound channeling system that is positionable relative to said leak detection microphone for directing an audible signal from a leak in an ink delivery system to the leak detection microphone, wherein the sound channeling system comprises a plurality of baffles, the baffles being wider at the side closest to the leak than the side closest to the leak detection microphone; wherein the leak detection microphone operable to receive the directed audible signal and output an electrical signal; an amplifier for amplifying the electrical signal; a processing circuit for receiving the amplified electrical signal comprising: a low pass filter for attenuating low-band frequencies from the amplified electrical signal; and a high pass filter for attenuating high-band frequencies from the amplified electrical signal; wherein the processing circuit applies an electronic algorithm to the amplified electrical signal to attenuate unwanted frequencies, the processing circuit generating an operator feedback signal; and an output device for receiving the operator feedback signal and alerting a user.