Vibration wave motor

Details Vibration wave motor Vibration wave motor

2006-04-25

2008-09-16

Dougherty, Thomas M. (Department: 2834)

Prime-mover dynamo plants

Electric control

Tide and wave motors

C310S323160

Reexamination Certificate

active

07425770

ABSTRACT:
Provided is a vibration wave motor including a pressurizing mechanism and a guide mechanism which are used for a moving member and can be thinned. The influence of a restoring force can be eliminated. The vibration wave motor includes an elastic vibration member which is composed of a permanent magnet and a piezoelectric element which are fixed to each other, a plurality of motion extraction portions provided on the permanent magnet, and a moving member which is pressurized to be in contact with the plurality of motion extraction portions. A closed magnetic circuit of a magnetic flux is formed to connect between the elastic vibration member and the moving member through the plurality of motion extraction portions. A flow direction of the magnetic flux passing through the moving member is aligned with a moving direction of the moving member.

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