Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1989-06-14
1990-10-23
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310325, 310333, H01L 4108
Patent
active
049654829
ABSTRACT:
An ultrasonic motor has a longitudinal-torsional composite transducer, a stator constituted by an ultrasonic vibrator sandwiching the transducer, and a rotor urged against the stator. The stator excites longitudinal-torsional ultrasonic vibrations to rotate the rotor by a frictional force. The motor includes a vibration adjusting rod for matching resonance frequencies of longitudinal and torsional ultrasonic vibrations of the stator with each other.
REFERENCES:
patent: 4642509 (1987-02-01), Kumada
patent: 4663556 (1987-05-01), Kumada
patent: 4764702 (1988-08-01), Mishiro
patent: 4812697 (1989-03-01), Mishiro
A Piezoelectric Ultrasonic Motor Akio Kumada Proceedings of the International Meeting on Ferroelectricity, Kobe 1985, Japanese Journal of Applied Physics, vol. 24(1985), Supplement 24-2, pp. 739-741.
Longitudinal-Torsional Composite Transducer and Its Applications Sadayuki Ueha, Hideki Nagashima and Michiyuki Masuda Proceedings of the 6th Meeting on Ferroelectric Materials and Their Applications, Kyoto 1987, Japanese Journal of Applied Physics, vol. 26(1987), Supplement 26-2, pp. 188-190.
Inoue Takeshi
Kagaya Isao
Myohga Osamu
Ohnishi Osamu
Takahashi Sadayuki
Budd Mark O.
NEC Corporation
LandOfFree
Ultrasonic motor and method of adjusting the same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ultrasonic motor and method of adjusting the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrasonic motor and method of adjusting the same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-768791