Patent ID: 8152043

Claim:
An ultrasonic horn comprising: an ultrasonic horn body; a front end portion; a rear end portion; an ultrasonic vibrator; a slit region formed with a slit; a matched pair of mounting flanges attached to and extending from the ultrasonic horn body; the front end portion being provided with a processing device attached thereto; the rear end portion comprising a larger diameter than the front end portion; the ultrasonic vibrator being located on the rear end portion; the slit region having only one slit, the only one slit being provided entirely inside and through the ultrasonic horn and being extending symmetrically in fore and aft direction, relative to a flange centerline of the ultrasonic horn, a center line for the only one slit in a longitudinal direction of the ultrasonic horn that corresponds substantially to a central axis in a longitudinal direction of the ultrasonic horn body; and the matched pair of mounting flanges being provided on one of node positions of vibration generated by the ultrasonic vibrator, the matched pair of mounting flanges that extend in a direction from outside of the only one slit region of the ultrasonic horn body to a distal end portion thereof, and the matched pair of mounting flanges having a pair of mounting hole regions formed with through holes serving as mounting holes, a center line extending through the each through hole being configured to extend in a direction substantially parallel with the central axis in a longitudinal direction of the ultrasonic horn body, and the pair of mounting hole regions being provided on one of the node positions of vibration generated by the ultrasonic vibrator.