US5134333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration wave driven motor
Assignee: Canon Inc
•
Filing: 1991-02-01
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Granted: 1992-07-28
•
Expires: 2011-02-01
Abstract
Abstract This invention relates to a vibration type motor in which frequency signals differing in phase from each other are applied to an electro-mechanical energy conversion element disposed on a vibration member to thereby vibrate the vibration member and drive a movable member by the vibration force. This invention provides a motor of the described type in which a monitoring portion for detecting the vibrated state of the vibration member is provided at a location avoiding a location at which the rigidity of the vibration member exhibits rigidity differing from the rigidity of the entire vibration member so that the vibrated state can be accurately detected.
Inventors
- 👤 Akio Atsuta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:12
CPC Classifications
H; H02; H02N; H02N2/00; H02N2/10; H02N2/16; H02N2/163
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
132 words
A vibration type motor comprising: (a) a vibration member formed with a plurality of slits or projected portions, said plurality of slits or projected portions including slits or projected portions having a first shape and at least one slit or projected portion having a second shape different from the first shape, the number of slits or projected portions having the first shape being greater than the number of slits or projected portions having the second shape; (b) an electro-mechanical energy conversion element portion provided on said vibration member, wherein frequency signals differing in phase from each other are applied to said element portion; and (c) a monitoring portion provided on said vibration member, said monitoring portion being disposed at a location away from said slits or projected portions having the second shape.
Claim 2
Dependent Claim
132 words
A vibration type motor comprising: (a) a vibration member formed with a plurality of slits or projected portions, said plurality of slits or projected portions including slits or projected portions having a first shape and at least one slit or projected portion having a second shape different from the first shape, the number of slits or projected portions having the first shape being greater than the number of slits or projected portions having the second shape; (b) an electro-mechanical energy conversion element portion provided on said vibration member, wherein frequency signals differing in phase from each other are applied to said element portion; and (c) a monitoring portion provided on said vibration member, said monitoring portion being disposed at a location away from said slits or projected portions having the second shape.
Claim 3
Dependent Claim
47 words
A vibration type motor according to claim 1, wherein said monitoring portion is comprised of a signal forming element portion provided on said vibration member for forming an electrical signal conforming to the vibration of said vibration member, and a detecting electrode provided on said element portion.
Claim 4
Dependent Claim
23 words
A vibration type motor according to claim 2, wherein said signal forming element portion comprises a part of said energy conversion element portion.
Claim 5
Dependent Claim
51 words
A vibration type motor according to claim 1, wherein said slits or projected portions having the first shape each have a slit length or a projection length of a first length and said slits or projected portions of the second shape each having a second length different from the first length.
Claim 6
Dependent Claim
18 words
A vibration type motor according to claim 1, wherein said electro-mechanical energy conversion element portion comprises piezo-electric elements.
Claim 7
Dependent Claim
136 words
A vibration type motor comprising: (a) a vibration member formed with a plurality of slits or projected portions, said plurality of slits or projected portions including slits or projected portions located at a predetermined first interval and slits or projected portions located at a predetermined second interval different from the first interval, the number of slits or projected portions located at the first interval being greater than the number of slits or projected portions located at the second interval; (b) an electro-mechanical energy conversion element portion provided on said vibration member, wherein frequency signals differing in phase from each other are applied to said element portion; and (c) a monitoring portion provided on said vibration member, said monitoring portion being disposed at a location away from the slits or projected portions disposed at the second interval.
Claim 8
Dependent Claim
136 words
A vibration type motor comprising: (a) a vibration member formed with a plurality of slits or projected portions, said plurality of slits or projected portions including slits or projected portions located at a predetermined first interval and slits or projected portions located at a predetermined second interval different from the first interval, the number of slits or projected portions located at the first interval being greater than the number of slits or projected portions located at the second interval; (b) an electro-mechanical energy conversion element portion provided on said vibration member, wherein frequency signals differing in phase from each other are applied to said element portion; and (c) a monitoring portion provided on said vibration member, said monitoring portion being disposed at a location away from the slits or projected portions disposed at the second interval.
Claim 9
Dependent Claim
47 words
A vibration type motor according to claim 6, wherein said monitoring portion is comprised of a signal forming element portion provided on said vibration member for forming an electrical signal conforming to the vibration of said vibration member, and a detecting electrode provided on said element portion.
Claim 10
Dependent Claim
23 words
A vibration type motor according to claim 7, wherein said signal forming element portion comprises a part of said energy conversion element portion.
Claim 11
Dependent Claim
18 words
A vibration type motor according to claim 6, wherein said electro-mechanical energy conversion element portion comprises piezo-electric elements.
Claim 12
Dependent Claim
38 words
A vibration type motor according to claim 6, wherein the shape of the slits or projected portions disposed at the first interval is different from the shape of the slits or projected portions disposed at the second interval.
Claim 13
Dependent Claim
38 words
A vibration type motor according to claim 6, wherein the length of the slits or projected portions disposed at the first interval is different from the length of the slits or projected portions disposed at the second interval.
Claim 14
Dependent Claim
141 words
A vibration type motor comprising: (a) a vibration member formed with a plurality of slits or projected portions, said plurality of slits or projected portions including slits or projected portions having a first shape and at least one slit or projected portion having a second shape different from the first shape, the number of slits or projected portions of the first shape being greater than the number of slits or projected portions having the second shape; (b) an electro-mechanical energy conversion element portion provided on said vibration member, wherein frequency signals differing in phase from each other are applied to said element portion; and (c) a monitoring portion for detecting a vibration state of said vibration member, wherein a center of said monitoring portion is located in alignment with a center of a slit or projected portion of the second shape.
Claim 15
Dependent Claim
141 words
A vibration type motor comprising: (a) a vibration member formed with a plurality of slits or projected portions, said plurality of slits or projected portions including slits or projected portions having a first shape and at least one slit or projected portion having a second shape different from the first shape, the number of slits or projected portions of the first shape being greater than the number of slits or projected portions having the second shape; (b) an electro-mechanical energy conversion element portion provided on said vibration member, wherein frequency signals differing in phase from each other are applied to said element portion; and (c) a monitoring portion for detecting a vibration state of said vibration member, wherein a center of said monitoring portion is located in alignment with a center of a slit or projected portion of the second shape.
Claim 16
Dependent Claim
45 words
A vibration type motor according to claim 12, wherein said monitoring portion comprises a signal forming element portion provided on said vibration member for forming an electrical signal conforming to the vibration of said vibrating member, and a detecting electrode provided on said element portion.
Claim 17
Dependent Claim
23 words
A vibration type motor according to claim 13, wherein said signal forming element portion comprises a part of said energy conversion element portion.
Claim 18
Dependent Claim
127 words
A vibration type motor for producing drive power by applying frequency signals differing in phase to an electro-mechanical portion of a vibration member, said motor comprising: (a) a vibration member including an electro-mechanical portion and a plurality of slits or projected portions, said plurality of slits or projected portions including slits or projected portions having a first shape and slits or projected portions having a second shape different from the front shape, the number of said slits or projected portions having the first shape being greater than the number of slits or projected portions having the second shape; and (b) a monitoring portion provided in said vibration member, said monitoring portion being disposed at a location away from said slits or projected portions having the second shape.
Claim 19
Dependent Claim
127 words
A vibration type motor for producing drive power by applying frequency signals differing in phase to an electro-mechanical portion of a vibration member, said motor comprising: (a) a vibration member including an electro-mechanical portion and a plurality of slits or projected portions, said plurality of slits or projected portions including slits or projected portions having a first shape and slits or projected portions having a second shape different from the front shape, the number of said slits or projected portions having the first shape being greater than the number of slits or projected portions having the second shape; and (b) a monitoring portion provided in said vibration member, said monitoring portion being disposed at a location away from said slits or projected portions having the second shape.
Claim 20
Dependent Claim
135 words
A vibration type motor for producing drive power by applying frequency signals differing in phase from each other to an electro-mechanical portion of a vibration member, said motor comprising: (a) vibration member including an electro-mechanical portion and a plurality of slits or projected portions, said plurality of slits or projected portions including slits or projected portions located at a predetermined first interval and slits or projected portions located at a predetermined second interval different from the first interval, the number of slits or projected portions located in the first interval being greater than the number of slits or projected portions located in the second interval; and (b) a monitoring portion provided in said vibration member, said monitoring potion being disposed at a location away from the slits or projected portions disposed at said second interval.
Claim 21
Dependent Claim
135 words
A vibration type motor for producing drive power by applying frequency signals differing in phase from each other to an electro-mechanical portion of a vibration member, said motor comprising: (a) vibration member including an electro-mechanical portion and a plurality of slits or projected portions, said plurality of slits or projected portions including slits or projected portions located at a predetermined first interval and slits or projected portions located at a predetermined second interval different from the first interval, the number of slits or projected portions located in the first interval being greater than the number of slits or projected portions located in the second interval; and (b) a monitoring portion provided in said vibration member, said monitoring potion being disposed at a location away from the slits or projected portions disposed at said second interval.
Claim 22
Dependent Claim
38 words
A vibration type motor according to claim 16, wherein the length of the slits or projected portions disposed at the first interval is different from the length of the slits or projected portions disposed at the second interval.
Claim 23
Dependent Claim
142 words
A vibration type motor for producing a drive power by applying frequency signals differing in phase from each other to an electro-mechanical portion of a vibration member, said motor comprising: (a) a vibration member including an electro-mechanical portion and a plurality of slits or projected portions, said plurality of slits or projected portions including slits or projected portions having a first shape and at least one slit or projected portion having a second shape different from the first shape, the number of slits or projected portions having the first shape being greater than the number of slits or projected portions having the second shape; and (b) a monitoring portion for detecting a vibration state of said vibration member, wherein a center of said monitoring portion is located in alignment with a center of a slit or projected portion of the second shape.
Claim 24
Dependent Claim
142 words
A vibration type motor for producing a drive power by applying frequency signals differing in phase from each other to an electro-mechanical portion of a vibration member, said motor comprising: (a) a vibration member including an electro-mechanical portion and a plurality of slits or projected portions, said plurality of slits or projected portions including slits or projected portions having a first shape and at least one slit or projected portion having a second shape different from the first shape, the number of slits or projected portions having the first shape being greater than the number of slits or projected portions having the second shape; and (b) a monitoring portion for detecting a vibration state of said vibration member, wherein a center of said monitoring portion is located in alignment with a center of a slit or projected portion of the second shape.
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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) | 1995-07-28 | 1996-01-27 | 1996-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-07-28 | 2000-01-27 | 2000-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-07-28 | 2004-01-27 | 2004-07-28 | $7700.00 | Window Closed / Lapsed |