Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1994-10-11
2000-05-16
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
31032304, 31032306, 31031602, H01L 4108
Patent
active
060641398
ABSTRACT:
An ultrasonic motor capable of being accurately step-driven comprises a vibrating member piezoelectrically vibrated for driving and halting a movable member. A driving wave is generated for vibrating the vibrating member to drive the movable member, and a halting wave is generated for vibrating the vibrating member to halt the movable member. The driving wave can be either a travelling wave or a standing wave, and the halting wave is a standing wave. The movable member is divided into a plurality of portions, and when the vibrating member is driven by the halting wave, the portions of the movable member become centered at respective nodal portions of the standing halting wave, causing the movable member to stop rotating so that the ultrasonic motor can be accurately step-driven.
REFERENCES:
patent: 4692649 (1987-09-01), Izukawa et al.
patent: 5025186 (1991-06-01), Tsukada
patent: 5053669 (1991-10-01), Saeki et al.
patent: 5079470 (1992-01-01), Kasuga et al.
patent: 5091670 (1992-02-01), Kawata et al.
patent: 5172023 (1992-12-01), Kawai et al.
patent: 5189331 (1993-02-01), Mukohjima et al.
patent: 5229678 (1993-07-01), Miyazawa
patent: 5237237 (1993-08-01), Ueda et al.
patent: 5247220 (1993-09-01), Miyazawa et al.
patent: 5416374 (1995-05-01), Inoue et al.
Patent Abstracts of Japan, vol. 011, No. 346 (E-556) Nov. 12, 1987.
Kasuga Masao
Otawa Shuji
Ozawa Fujio
Sato Takashi
Budd Mark O.
Seiko Instruments Inc.
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