US5099167A
Expired / Lapsed
US
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Vibration wave driven motor
Assignee: Canon Inc
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Filing: 1990-03-06
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Granted: 1992-03-24
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Expires: 2010-03-06
Abstract
Abstract In a vibration wave driven motor disclosed herein, the arcuate portions of the vibration member thereof are formed into a shape in which flexural rigidity differs between the inner side and the outer side thereof, or a shape in which the torsional rigidity of the straight portions of the vibration member is made higher than the torsional rigidity of the arcuate portions, whereby a torsion component produced in the straight portions is made small by the straight portions.
Inventors
- 👤 Atsushi Kimura
- 👤 Hiroshi Seki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:35
CPC Classifications
H; H02; H02N; H02N2/00; H02N2/02; H02N2/08
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
86 words
A vibration wave apparatus, comprising: (a) an electro-mechanical energy conversion means; and (b) a vibration member provided in contact with said conversion means, said conversion means producing a travelling wave in said vibration member in response to an electrical signal applied to said conversion means, said vibration member having at least one straight portion and at least one arcuate portion, said straight portion and said arcuate portion being formed so that torsional rigidity of said straight portion is greater than torsional rigidity of said arcuate portion.
Claim 2
Dependent Claim
86 words
A vibration wave apparatus, comprising: (a) an electro-mechanical energy conversion means; and (b) a vibration member provided in contact with said conversion means, said conversion means producing a travelling wave in said vibration member in response to an electrical signal applied to said conversion means, said vibration member having at least one straight portion and at least one arcuate portion, said straight portion and said arcuate portion being formed so that torsional rigidity of said straight portion is greater than torsional rigidity of said arcuate portion.
Claim 3
Dependent Claim
32 words
A vibration wave apparatus according to claim 1, wherein said vibration member is shaped as a loop and the width of said straight portion is greater than that of said arcuate portion.
Claim 4
Dependent Claim
15 words
A vibration wave apparatus according to claim 2, wherein said vibration member is shaped elliptically.
Claim 5
Dependent Claim
120 words
A vibration wave driven apparatus, comprising: (a) an electro-mechanical energy conversion means; (b) a vibration member provided in contact with said conversion means, said conversion means producing a vibration wave in said vibration member in response to an electrical signal applied to said conversion means, said vibration member having at least one straight portion and at least one arcuate portion, said straight portion and said arcuate portion being arranged in such a manner that torsional rigidity of said straight portion is made greater than that of said arcuate portion; and (c) a contact member provided in contact with said vibration member to receive the vibration wave, said vibration wave causing relative movement between said vibration member and said contact member.
Claim 6
Dependent Claim
120 words
A vibration wave driven apparatus, comprising: (a) an electro-mechanical energy conversion means; (b) a vibration member provided in contact with said conversion means, said conversion means producing a vibration wave in said vibration member in response to an electrical signal applied to said conversion means, said vibration member having at least one straight portion and at least one arcuate portion, said straight portion and said arcuate portion being arranged in such a manner that torsional rigidity of said straight portion is made greater than that of said arcuate portion; and (c) a contact member provided in contact with said vibration member to receive the vibration wave, said vibration wave causing relative movement between said vibration member and said contact member.
Claim 7
Dependent Claim
32 words
A vibration wave apparatus according to claim 4, wherein said vibration member is shaped as a loop and the width of said straight portion is greater than that of said arcuate portion.
Claim 8
Dependent Claim
15 words
A vibration wave apparatus according to claim 5, wherein said vibration member is shaped elliptically.
Claim 9
Dependent Claim
118 words
A vibration wave driven motor, comprising: (a) an electro-mechanical energy conversion means; (b) a vibration member provided in contact with said conversion means, said conversion means producing a vibration wave in said vibration member in response to an electrical signal applied to said conversion means, said vibration member including at least one straight portion with a predetermined width and at least one arcuate portion with a predetermined width, the flexural rigidity of an inner peripheral side of said arcuate portion being different from the flexural rigidity of an outer peripheral side thereof, and the flexural rigidity of an inner peripheral side of said straight portion being the same as the flexural rigidity of an outer peripheral side thereof.
Claim 10
Dependent Claim
118 words
A vibration wave driven motor, comprising: (a) an electro-mechanical energy conversion means; (b) a vibration member provided in contact with said conversion means, said conversion means producing a vibration wave in said vibration member in response to an electrical signal applied to said conversion means, said vibration member including at least one straight portion with a predetermined width and at least one arcuate portion with a predetermined width, the flexural rigidity of an inner peripheral side of said arcuate portion being different from the flexural rigidity of an outer peripheral side thereof, and the flexural rigidity of an inner peripheral side of said straight portion being the same as the flexural rigidity of an outer peripheral side thereof.
Claim 11
Dependent Claim
27 words
A vibration wave driven motor according to claim 7, wherein the flexural rigidity of the inner peripheral side is lower than that of the outer peripheral side.
Claim 12
Dependent Claim
28 words
A vibration wave driven motor according to claim 7, wherein material of the inner peripheral side and material of the outer peripheral side are different from each other.
Claim 13
Dependent Claim
26 words
A vibration wave driven motor according to claim 7, wherein a height of the inner peripheral side is higher than that of the outer peripheral side.
Claim 14
Dependent Claim
31 words
A vibration wave driven motor according to claim 7, wherein the arcuate portion is shaped such that the height gradually increases from the inner peripheral portion toward the outer peripheral portion.
Claim 15
Dependent Claim
16 words
A vibration wave driven motor according to claim 7, wherein said vibration member is shaped elliptically.
Claim 16
Dependent Claim
107 words
A vibration wave driven motor, comprising: (a) a contact member; and (b) a vibration member provided in contact with said contact member for generating a vibration wave in response to an applied electrical signal, said vibration member including at least one straight portion with a predetermined width and at least one arcuate portion with a predetermined width, the flexural rigidity of an inner peripheral side of said arcuate portion being different from the flexural rigidity of an outer peripheral side thereof, and the flexural rigidity of an inner peripheral side of said straight portion being the same as the flexural rigidity of an outer peripheral side thereof.
Claim 17
Dependent Claim
107 words
A vibration wave driven motor, comprising: (a) a contact member; and (b) a vibration member provided in contact with said contact member for generating a vibration wave in response to an applied electrical signal, said vibration member including at least one straight portion with a predetermined width and at least one arcuate portion with a predetermined width, the flexural rigidity of an inner peripheral side of said arcuate portion being different from the flexural rigidity of an outer peripheral side thereof, and the flexural rigidity of an inner peripheral side of said straight portion being the same as the flexural rigidity of an outer peripheral side thereof.
Claim 18
Dependent Claim
40 words
A vibration wave driven motor according to claim 13, wherein said vibration member has a pair of straight portions with a predetermined length and width and a pair of arcuate portions arranged so as to interpose said straight portions therebetween.
Claim 19
Dependent Claim
33 words
A vibration wave driven motor according to claim 13, wherein said vibration member has a shape which has four straight portions with a predetermined width and four arcuate portions connecting each straight portion.
Claim 20
Dependent Claim
99 words
A vibration device for a vibration wave driven motor, wherein a vibration member is provided for generating a vibration in response to an applied electrical signal, said vibration member including at least one straight portion with a predetermined width and at least one arcuate portion with a predetermined width, the flexural rigidity of an inner peripheral side of said arcuate portion being different from the flexural rigidity of an outer peripheral side thereof, and the flexural rigidity of an inner peripheral side of said straight portion being the same as the flexural rigidity of an outer peripheral side thereof.
Claim 21
Dependent Claim
99 words
A vibration device for a vibration wave driven motor, wherein a vibration member is provided for generating a vibration in response to an applied electrical signal, said vibration member including at least one straight portion with a predetermined width and at least one arcuate portion with a predetermined width, the flexural rigidity of an inner peripheral side of said arcuate portion being different from the flexural rigidity of an outer peripheral side thereof, and the flexural rigidity of an inner peripheral side of said straight portion being the same as the flexural rigidity of an outer peripheral side thereof.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-24 | 1995-09-23 | 1996-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-24 | 1999-09-23 | 2000-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-24 | 2003-09-23 | 2004-03-24 | $7700.00 | Window Closed / Lapsed |