US4857793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration wave motor
Assignee: Canon Inc
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Filing: 1987-08-21
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Granted: 1989-08-15
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Expires: 2007-08-21
Abstract
Abstract In a vibration wave motor, piezo-electric elements are provided in two orthogonal planes in the lengthwise direction of a bar-like vibration member and when a predetermined electric field is applied to these piezo-electric elements, rotational movement is generated in the surface of the vibration member in a plane perpendicular to the lengthwise direction of the vibration member, whereby a rotational member bearing against the vibration member is rotated and mechanical energy corresponding to supplied electric energy is taken out of the rotational member.
Inventors
- 👤 Takuo Okuno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:06
CPC Classifications
H; H02; H02N; H02N2/00; H02N2/10; H02N2/103; H02N2/0005; H02N2/001; H02N2/0015; H02N2/005; H02N2/0055; H02N2/12; H02N2/123; H02N2/126
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
99 words
A vibration wave motor comprising: (a) a bar-like member; (b) means for supporting at least one end of said bar-like member; (c) an electro-mechanical energy converting element provided in at least two different planes in mutually perpendicular planes in the lengthwise direction of said bar-like member, rotational movement being generated in the surface of said bar-like member when an electrical signal is applied to said converting element; (d) a rotational member having an output shaft at one end thereof and rotatably supported; and (e) urging means for imparting an urging force between said bar-like member and said rotational member.
Claim 2
Dependent Claim
99 words
A vibration wave motor comprising: (a) a bar-like member; (b) means for supporting at least one end of said bar-like member; (c) an electro-mechanical energy converting element provided in at least two different planes in mutually perpendicular planes in the lengthwise direction of said bar-like member, rotational movement being generated in the surface of said bar-like member when an electrical signal is applied to said converting element; (d) a rotational member having an output shaft at one end thereof and rotatably supported; and (e) urging means for imparting an urging force between said bar-like member and said rotational member.
Claim 3
Dependent Claim
23 words
A vibration wave motor according to claim 1, wherein the rotational movement generated in the surface of said bar-like member is circular movement.
Claim 4
Dependent Claim
23 words
A vibration wave motor according to claim 1, wherein the rotational movement generated in the surface of said bar-like member is elliptical movement.
Claim 5
Dependent Claim
19 words
A vibration wave motor according to claim 1, wherein said bar-like member is a bar having a square cross-section.
Claim 6
Dependent Claim
17 words
A vibration wave motor according to claim 1, wherein said rotational member is formed by a roller.
Claim 7
Dependent Claim
30 words
A vibration wave motor according to claim 5, wherein the member for supporting said roller is a bearing rotatably supporting an output portion protruding from one end of said roller.
Claim 8
Dependent Claim
119 words
A vibration wave motor comprising: (a) a bar-like member; (b) means for supporting at least one end of said bar-like member; (c) an electro-mechanical energy converting element provided in at least two different planes in mutually perpendicular planes in the lengthwise direction of said bar-like member, rotational movement being generated in the surface of said bar-like member when an electrical signal is applied to said converting element; (d) a rotational member having a screw portion formed as an output shaft and rotatably supported; (e) urging means for imparting an urging force to between said bar-like member and said rotational member; and (f) a shiftable moving member having a portion threadably engaged with the screw portion of said rotational member.
Claim 9
Dependent Claim
119 words
A vibration wave motor comprising: (a) a bar-like member; (b) means for supporting at least one end of said bar-like member; (c) an electro-mechanical energy converting element provided in at least two different planes in mutually perpendicular planes in the lengthwise direction of said bar-like member, rotational movement being generated in the surface of said bar-like member when an electrical signal is applied to said converting element; (d) a rotational member having a screw portion formed as an output shaft and rotatably supported; (e) urging means for imparting an urging force to between said bar-like member and said rotational member; and (f) a shiftable moving member having a portion threadably engaged with the screw portion of said rotational member.
Claim 10
Dependent Claim
90 words
A vibration wave motor comprising: (a) a bar-like member; (b) an electro-mechanical energy converting element provided in at least two different mutually perpendicular planes in the lengthwise direction of said bar-like member, rotational movement being generated in the surface of said bar-like member when an electrical signal is applied to said converting element; (c) rotatable means having an output shaft and arranged to be frictionally driven by a surface of said bar-like member; and (d) urging means for imparting an urging force between said bar-like member and said rotatable means.
Claim 11
Dependent Claim
90 words
A vibration wave motor comprising: (a) a bar-like member; (b) an electro-mechanical energy converting element provided in at least two different mutually perpendicular planes in the lengthwise direction of said bar-like member, rotational movement being generated in the surface of said bar-like member when an electrical signal is applied to said converting element; (c) rotatable means having an output shaft and arranged to be frictionally driven by a surface of said bar-like member; and (d) urging means for imparting an urging force between said bar-like member and said rotatable means.
Claim 12
Dependent Claim
94 words
A vibration wave motor comprising: (a) a bar-like member; (b) means for supporting at least one portion of said bar-like member; (c) a plurality of vibration elements mounted on said bar-like member for periodically bending said bar-like member in at least two directions normal to the longitudinal direction of said bar-like member, rotational movement being generated in the surface of said bar-like member when an electrical signal is applied to said vibration element; and (d) rotatable means having an output shaft and arranged to be frictionally driven by a surface of said bar-like member.
Claim 13
Dependent Claim
94 words
A vibration wave motor comprising: (a) a bar-like member; (b) means for supporting at least one portion of said bar-like member; (c) a plurality of vibration elements mounted on said bar-like member for periodically bending said bar-like member in at least two directions normal to the longitudinal direction of said bar-like member, rotational movement being generated in the surface of said bar-like member when an electrical signal is applied to said vibration element; and (d) rotatable means having an output shaft and arranged to be frictionally driven by a surface of said bar-like member.
Claim 14
Dependent Claim
27 words
A vibration wave motor according to claim 8, wherein said supporting means is arranged to impart an urging force between said bar-like member and said rotatable means.
Claim 15
Dependent Claim
20 words
A vibration wave motor according to claim 8, wherein said supporting means supports a node position of said bar-like member.
References Cited (Backward Citations)
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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) | 1992-08-14 | 1993-02-13 | 1993-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-14 | 1997-02-13 | 1997-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-14 | 2001-02-13 | 2001-08-15 | $7700.00 | Window Closed / Lapsed |