EP0209865A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Ultrasonic motor
Assignee: Panasonic Holdings Corp
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Filing: 1986-07-18
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Granted: —
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Expires: 2006-07-18
Abstract
Abstract Contact member (3) of composite material made of organic fiber and resin is provided on an inner surface of a rotor (4) or a stator (2) of an ultrasonic motor. Noise is suppressed. starting torque is better and wear is fairly decreased.
Inventors
- 👤 Akira Tokushima
- 👤 Yoshinobu Imasaka
- 👤 Hiroshi Yoneno
- 👤 Masanori Sumihara
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 09:39
CPC Classifications
H; H02; H02N; H02N2/00; H02N2/10; H02N2/16; H02N2/166; H02N2/0005; H02N2/005; H02N2/0065; H02N2/007; H02N2/163
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
77 words
An ultrnsonic motor comprising: a stator (2) provided with a piezoelectric element (1), said piezoelectric element (1) being for vibrating said stator (2) by travelling waves of ultrasonic frequency, and a rotor (4) to be rotated by contacting said stator (2), and a contact member (3) of composite material provided on an inner surface of an alternative of said stator (3) or said rotor (4), the contact member being a composite material of organic fiber and resin.
Claim 2
Dependent Claim
77 words
An ultrnsonic motor comprising: a stator (2) provided with a piezoelectric element (1), said piezoelectric element (1) being for vibrating said stator (2) by travelling waves of ultrasonic frequency, and a rotor (4) to be rotated by contacting said stator (2), and a contact member (3) of composite material provided on an inner surface of an alternative of said stator (3) or said rotor (4), the contact member being a composite material of organic fiber and resin.
Claim 3
Dependent Claim
17 words
An ultrasonic motor in accordance with claim 1, wherein said organic fiber is of discontinuous filament type.
Claim 4
Dependent Claim
36 words
An ultrasonic motor in accordance with claim 2, wherein said organic fiber is of aromatic polyamide fiber and scattered in said resin, and said organic fiber is 2--70 volume % of said member of composite material.
Claim 5
Dependent Claim
16 words
An ultrasonic motor in accordance with claim 1, wherein said organic fiber is of felt type.
Claim 6
Dependent Claim
27 words
An ultrasonic motor in accordance with claim 4, wherein said organic fiber is selected from a group consisting of aromatic polyamide fiber, phenol fiber and polyester fiber.
Claim 7
Dependent Claim
16 words
An ultrasonic motor in accordance with claim 1, wherein said organic fiber is of cloth type.
References Cited (Backward Citations)
No citation records indexed.
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