Patent ID: 7247086
Filing Date: 2007-07-24
Classification: A22C

Abstract:
1. An apparatus to extract fish bones from a fish fillet that comprises a generator of torque and vibration to generate traction forces that incorporate mechanical vibrations, a fishbone removal device, and means for transmitting said vibrations and torque from the generator to the fishbone removal device that transforms said torque and vibrations into vibratory traction forces that allow extracting the fishbone from the fillet, wherein the generator of torque and vibrations comprises a driving source capable of varying the torque to be delivered and a torque controller acting on said driving source to generate a principal sequence of torque pulses controlled in their frequency, period, amplitude and magnitude, and secondary sequences of torque pulses with a lower period and a higher frequency, also controlled in their frequencies, periods, amplitudes and magnitudes, wherein the controller, independently of the type of generated pulses, limits the maximum magnitude of delivered torque by filtering those pulses that could cause a breakage of a fishbone.