Piezoelectric ultrasonic motor and method of manufacturing...

Details Piezoelectric ultrasonic motor and method of manufacturing... Piezoelectric ultrasonic motor and method of manufacturing...

Filed on

2009-08-04

Date issued

2011-11-01

Examiner

Rosenau, Derek (Department: 2837)

Patent Class

Electrical generator or motor structure

SubClass

Non-dynamoelectric

SubSubClass

Piezoelectric elements and devices

Other Related Categories

C310S323030

Type

Reexamination Certificate

Status

active

Patent number

08049396

Description

ABSTRACT:
A piezoelectric ultrasonic motor and a method of manufacturing the piezoelectric ultrasonic motor. The piezoelectric ultrasonic motor includes: a piezoelectric body that generates a traveling wave according to an applied voltage signal; a vibrator that is attached to the piezoelectric body and vibrates; and a rotator that contacts the vibrator and is rotated by friction with the vibrating vibrator, wherein the rotator includes a plate spring member having a contact portion that contacts the vibrator, a support member that is coupled to the plate spring member and supports the plate spring member, and a buffer space defined by the plate spring member and the support member.

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patent: 4-347585 (1992-12-01), None
patent: 5-76189 (1993-03-01), None
patent: 7-298648 (1995-11-01), None
patent: 10-0178735 (1998-11-01), None

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