Standing-wave type ultrasonic motor and timepiece

Details Standing-wave type ultrasonic motor and timepiece Standing-wave type ultrasonic motor and timepiece

1990-04-23

1992-01-07

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H01L 4108

Patent

active

050794701

ABSTRACT:
A standing-wave type ultrasonic motor utilizing flexible standing-wave components. Protuberances are provided nearly at every other intermediate positions of the loops and the nodes of flexible standing-waves generated in the vibration member by the piezo-electric element or the electro-strictive element, and a moving member is brought into pressed contact with the protuberances so as to be frictionally driven. A standing-wave type ultrasonic motor is driven in the forward direction and in the reverse direction while fulfilling the reduction in size, stabilization in performance and improvement in efficiency.
Furthermore, an analog-type electronic timepiece is obtained using display means that is driven by the standing-wave type ultrasonic motor, featuring reduced size and thickness.

REFERENCES:
patent: 4580073 (1986-04-01), Okumura et al.
patent: 4739212 (1988-04-01), Imasaka
patent: 4829209 (1989-05-01), Kawasaki et al.
patent: 4882500 (1989-11-01), Iijima

Affiliated with

Also associated with

Rating

Standing-wave type ultrasonic motor and timepiece does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Standing-wave type ultrasonic motor and timepiece, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Standing-wave type ultrasonic motor and timepiece will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-824328