US4651046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piezoelectric scanning device
Assignee: Niterra Co Ltd
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Filing: 1985-10-11
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Granted: 1987-03-17
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Expires: 2005-10-11
Abstract
Abstract A piezoelectric scanning device comprises X-direction and Y-direction piezoelectric drive sections coupled to mutually perpendicular Z-direction piezoelectric clamping members. The selective application of voltages to the piezoelectric elements included in the X-direction and Y-direction drive sections and the Z-direction clamping members enables movement of the scanning device in two directions.
Inventors
- 👤 Kanji Ohya
- 👤 Naomasa Wakita
- 👤 Yasuhiko Nakagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:00
CPC Classifications
H; H02; H02N; H02N2/00; H02N2/02; H02N2/028; H02N2/021; H02N2/023; H10; H10N; H10N30/00; H10N30/50; H10N30/503; H10N30/505; H10N30/80; H10N30/88; H10N30/886
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
132 words
A piezoelectric electric scanning device comprising: four X-direction drive sections each including elongated piezoelectric stack means extending in the X-direction, each of said X-direction drive sections being parallel to each other; four Y-direction drive sections each including elongated piezoelectric stack means extending in the Y-direction perpendicular to said X-direction, each of said Y-direction drive sections being parallel to each other; four Z-direction clamping sections each including clamping piezoelectric stack means extending in the Z-direction mutually perpendicular to said X-direction and said Y-direction, each of said X-direction clamping sections being parallel to each other; and means for coupling said four X-direction drive sections, said four Y-direction drive sections and said four Z-direction clamping sections together, said coupled X-direction sections, said Y-direction sections and said Z-direction sections together defining the edges of a cube.
Claim 2
Dependent Claim
132 words
A piezoelectric electric scanning device comprising: four X-direction drive sections each including elongated piezoelectric stack means extending in the X-direction, each of said X-direction drive sections being parallel to each other; four Y-direction drive sections each including elongated piezoelectric stack means extending in the Y-direction perpendicular to said X-direction, each of said Y-direction drive sections being parallel to each other; four Z-direction clamping sections each including clamping piezoelectric stack means extending in the Z-direction mutually perpendicular to said X-direction and said Y-direction, each of said X-direction clamping sections being parallel to each other; and means for coupling said four X-direction drive sections, said four Y-direction drive sections and said four Z-direction clamping sections together, said coupled X-direction sections, said Y-direction sections and said Z-direction sections together defining the edges of a cube.
Claim 3
Dependent Claim
116 words
A piezoelectric scanning device according to claim 1, wherein said coupling means comprises a first plurality of coupling blocks and a second plurality of coupling blocks, each of said first coupling blocks being connected to a first end of each of said four X-direction drive sections, and to an end of one of said Y-direction drive sections, and to an end of one of said Z-direction clamping sections, and each of said second coupling blocks being connected to a second end of one of each of said X-direction drive sections opposite said first ends, and to an end of one of said Y-direction drive sections, and to an end of one of said Z-direction clamping sections.
Claim 4
Dependent Claim
34 words
A piezoelectric scanning device according to claim 2, wherein each of said X-direction drive sections and Y-direction drive sections comprise a plurality of annular piezoelectric plates alternately laminated with a plurality of electrode plates.
References Cited (Backward Citations)
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US3684904A
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US4163168A
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US4455501A
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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) | 1990-03-16 | 1990-09-15 | 1991-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-16 | 1994-09-15 | 1995-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-16 | 1998-09-15 | 1999-03-17 | $7700.00 | Window Closed / Lapsed |