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US4087715A
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Piezoelectric electromechanical micropositioner
Assignee: Raytheon Co
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Filing: 1976-11-18
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Granted: 1978-05-02
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Expires: 1996-11-18
Abstract
Abstract An electromechanical micropositioner for making minute angular and linear translational displacements of an element attached to same. The micropositioner employs electrical control potentiometers, a power source, and a signal source that provides for the type of displacement desired.
Inventors
- 👤 Jon H. Myer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:24
CPC Classifications
H; H10; H10N; H10N30/00; H10N30/20; H10N30/204; H10N30/2047; H02; H02N; H02N2/00; H02N2/0095
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
93 words
An electromechanical micropositioner, comprising the combination; a tubular piezoelectric member; a plurality of arc-shaped electrically conductive coatings disposed on a first surface of the member electrically insulated from each other and a first endless electrically conductive coating disposed on a second surface opposite from the first surface of the member; a second endless electrically conductive coating disposed over a portion of said first surface; and a first potentiometer having an endless winding with taps at regular intervals, equal in number and connected to the plurality of arc-shaped coatings, one tap per arc-shaped coating.
Claim 2
Dependent Claim
93 words
An electromechanical micropositioner, comprising the combination; a tubular piezoelectric member; a plurality of arc-shaped electrically conductive coatings disposed on a first surface of the member electrically insulated from each other and a first endless electrically conductive coating disposed on a second surface opposite from the first surface of the member; a second endless electrically conductive coating disposed over a portion of said first surface; and a first potentiometer having an endless winding with taps at regular intervals, equal in number and connected to the plurality of arc-shaped coatings, one tap per arc-shaped coating.
Claim 3
Dependent Claim
16 words
The invention as stated in claim 1, including a second potentiometer connected to said first potentiometer.
Claim 4
Dependent Claim
20 words
The invention as stated in claim 1, including a signal source electrically connected to at least some of the coatings.
Claim 5
Dependent Claim
17 words
The invention as stated in claim 2, including a power source electrically connected to the first potentiometer.
Claim 6
Dependent Claim
29 words
The invention as stated in claim 1, wherein the piezoelectric member has some of said coatings on said second surface and some of said coatings on said first surface.
Claim 7
Dependent Claim
49 words
The invention as stated in claim 5, wherein the coatings on said first surface comprise three arc-shaped coatings electrically insulated from each other and regularly disposed about said first surface, and a single coating circumjacent a portion of said first surface and electrically insulated from said three arc-shaped coatings.
Claim 8
Dependent Claim
20 words
The invention as stated in claim 5, wherein the coating on said second surface is a single endless cylindrical coating.
Claim 9
Dependent Claim
16 words
The invention as stated in claim 2, wherein the electrical components comprise first and second potentiometers.
Claim 10
Dependent Claim
22 words
The invention as stated in claim 2, wherein the first potentiometer has a 360° adjustment capability and electrically tapped at 120° intervals.
Claim 11
Dependent Claim
28 words
The invention as stated in claim 2, including a power source electrically connected to the second potentiometer and to the single endless cylindrical coating on said second surface.
Claim 12
Dependent Claim
41 words
The invention as stated in claim 3, wherein one of the electrically conductive coatings is an endless cylinder on the second surface of said member and wherein the signal source is electrically connected to the endless cylinder on said second surface.
Claim 13
Dependent Claim
25 words
The invention as stated in claim 10, including a signal source electrically intermediate the endless cylindrical coating on the second surface and the power source.
Claim 14
Dependent Claim
16 words
The invention as stated in claim 3, wherein the signal source provides a DC voltage output.
Claim 15
Dependent Claim
17 words
The invention as stated in claim 3, wherein the signal source provides a step function voltage output.
Claim 16
Dependent Claim
18 words
The invention as stated in claim 3, wherein the signal source power provides an alternating current waveform output.
Claim 17
Dependent Claim
14 words
The invention as stated in claim 15, wherein the alternating current waveform is sinusoidal.
Claim 18
Dependent Claim
14 words
The invention as stated in claim 15, wherein the alternating current waveform is rectangular.
Claim 19
Dependent Claim
14 words
The invention as stated in claim 15, wherein the alternating current waveform is triangular.
Claim 20
Dependent Claim
16 words
The invention as stated in claim 15, wherein the alternating current waveform is of saw-tooth shape.
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) | 1981-05-01 | 1981-10-31 | 1982-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-01 | 1985-10-31 | 1986-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-01 | 1989-10-31 | 1990-05-02 | $7700.00 | Window Closed / Lapsed |