Patent US4914338A successfully refreshed from Google Patents.
US4914338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration wave motor
Assignee: Canon Inc
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Filing: 1989-08-17
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Granted: 1990-04-03
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Expires: 2009-08-17
Abstract
Abstract A vibration wave motor for frictionally driving a movable member contacting, under pressure, a vibration member, by a vibration wave generated in the vibration member, includes at least a contact area of the movable member which is to contact to the vibration member and has an alumite film thereon irradiated with a high energy density beam.
Inventors
- 👤 Shuji Murakami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:07
CPC Classifications
H; H02; H02N; H02N2/00; H02N2/10; H02N2/16; H02N2/163; H02N2/0005; H02N2/005; H02N2/0065; H02N2/007
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
92 words
A vibration wave motor comprising: a vibration member; and a movable member contacting under pressure said vibration member by a vibration wave generated in said vibration member, wherein said movable member comprises a contact area adapted to contact said vibration member, wherein at least said contact area has a CO 2 laser irradiated alumite film thereon having a hardness in the range of approximately Hv 750-800, wherein said vibration member comprises a contact area adapted to contact said contact area of said movable member and comprising a WC-Co 12% flame sprayed film.
Claim 2
Dependent Claim
92 words
A vibration wave motor comprising: a vibration member; and a movable member contacting under pressure said vibration member by a vibration wave generated in said vibration member, wherein said movable member comprises a contact area adapted to contact said vibration member, wherein at least said contact area has a CO 2 laser irradiated alumite film thereon having a hardness in the range of approximately Hv 750-800, wherein said vibration member comprises a contact area adapted to contact said contact area of said movable member and comprising a WC-Co 12% flame sprayed film.
Claim 3
Dependent Claim
20 words
A vibration wave motor according to claim 1, wherein said alumite film is a film treated by sulfuric acid-alumite treatment.
Claim 4
Dependent Claim
20 words
A vibration wave motor according to claim 1, wherein said movable member is made of a 6000 series aluminum alloy.
Claim 5
Dependent Claim
87 words
A motor comprising: a vibration member; and a movable member contacting under pressure said vibration member by vibration generated in said vibration member, wherein said movable member comprises a contact area adapted to contact said vibration member, wherein at least said contact area has a CO 2 laser irradiated alumite film thereon having a hardness in the range of approximately Hv 750-800, wherein said vibration member comprises a contact area adapted to contact said contact area of said movable member comprising a WC-Co 12% flame sprayed film.
Claim 6
Dependent Claim
87 words
A motor comprising: a vibration member; and a movable member contacting under pressure said vibration member by vibration generated in said vibration member, wherein said movable member comprises a contact area adapted to contact said vibration member, wherein at least said contact area has a CO 2 laser irradiated alumite film thereon having a hardness in the range of approximately Hv 750-800, wherein said vibration member comprises a contact area adapted to contact said contact area of said movable member comprising a WC-Co 12% flame sprayed film.
Claim 7
Dependent Claim
18 words
A motor according to claim 4, wherein said alumite film is a film treated by sulfuric acid-alumite treatment.
Claim 8
Dependent Claim
18 words
A motor according to claim 4, wherein said movable member is made of a 6000 series aluminum alloy.
References Cited (Backward Citations)
US4019073A
Cited
CA1066345A
Cited
US4513219A
Cited
US4562373A
Cited
US4613782A
Cited
US4578115A
Cited
US4779018A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-02 | 1993-10-02 | 1994-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-02 | 1997-10-02 | 1998-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-02 | 2001-10-02 | 2002-04-03 | $7700.00 | Window Closed / Lapsed |