US5410207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piezoelectric actuator
Assignee: Yamaichi Electronics Co Ltd
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Filing: 1993-11-23
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Granted: 1995-04-25
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Expires: 2013-11-23
Abstract
Abstract A piezoelectric actuator has a zigzag-shaped actuator body, and an expansible piezoelectric element attached to the actuator body. The actuator body has zigzag elements. The zigzag elements are shifted toward and away from each other by expansion/contraction of the expansible piezoelectric elements. The actuator body is expanded and contracted by positional shifting of the zigzag elements.
Inventors
- 👤 Shinsuke Miura
- 👤 Tsutomu Odagiri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:12
CPC Classifications
H; H10; H10N; H10N30/00; H10N30/20; H10N30/204; H10N30/2041; H10N30/2042; H10N30/2044
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
61 words
A piezoelectric actuator comprising a zigzag-shaped actuator body, and at least one expansible piezoelectric element attached to said actuator body, said actuator body including zigzag elements, said zigzag elements being shifted toward and away from each other by expansion/contraction of said at least one expansible piezoelectric element, said actuator body being expanded and contracted by positional shifting of the zigzag elements.
Claim 2
Dependent Claim
61 words
A piezoelectric actuator comprising a zigzag-shaped actuator body, and at least one expansible piezoelectric element attached to said actuator body, said actuator body including zigzag elements, said zigzag elements being shifted toward and away from each other by expansion/contraction of said at least one expansible piezoelectric element, said actuator body being expanded and contracted by positional shifting of the zigzag elements.
Claim 3
Dependent Claim
40 words
A piezoelectric actuator as claimed in claim 1, in which said at least one expansible piezoelectric element comprises a plurality of expansible piezoelectric elements, each of which is attached to outer end faces of adjacent ones of said zigzag elements.
Claim 4
Dependent Claim
38 words
A piezoelectric actuator as claimed in claim 1, in which said at least one expansible piezoelectric element comprises a plurality of expansible piezoelectric elements which are respectively attached to opposing surfaces of adjacent ones of said zigzag elements.
Claim 5
Dependent Claim
101 words
A piezoelectric device comprising a pair of piezoelectric actuators, each of which has first and second ends, said actuators being axially symmetrically arranged relative to each other with said first ends of said actuators being connected to each other, each of said actuators comprising: a zigzag-shaped actuator body, and at least one expansible piezoelectric element attached to said actuator body, said actuator body including zigzag elements, said zigzag elements being shifted toward and away from each other by expansion/contraction of said at least one expansible piezoelectric element, said actuator body being expanded and contracted by positional shifting of the zigzag elements.
Claim 6
Dependent Claim
101 words
A piezoelectric device comprising a pair of piezoelectric actuators, each of which has first and second ends, said actuators being axially symmetrically arranged relative to each other with said first ends of said actuators being connected to each other, each of said actuators comprising: a zigzag-shaped actuator body, and at least one expansible piezoelectric element attached to said actuator body, said actuator body including zigzag elements, said zigzag elements being shifted toward and away from each other by expansion/contraction of said at least one expansible piezoelectric element, said actuator body being expanded and contracted by positional shifting of the zigzag elements.
Claim 7
Dependent Claim
63 words
A piezoelectric actuator comprising: a zigzag-shaped actuator body comprising a plurality of zigzag elements connected together; at least one expansible piezoelectric element attached to said zigzag-shaped actuator body; and wherein said at least one expansible piezoelectric element is expandable and contractible so as to constitute a means for positionally shifting said zigzag elements to cause expansion and contraction of said zigzag-shaped actuator body.
Claim 8
Dependent Claim
63 words
A piezoelectric actuator comprising: a zigzag-shaped actuator body comprising a plurality of zigzag elements connected together; at least one expansible piezoelectric element attached to said zigzag-shaped actuator body; and wherein said at least one expansible piezoelectric element is expandable and contractible so as to constitute a means for positionally shifting said zigzag elements to cause expansion and contraction of said zigzag-shaped actuator body.
Claim 9
Dependent Claim
40 words
A piezoelectric actuator as claimed in claim 5, in which said at least one expansible piezoelectric element comprises a plurality of expansible piezoelectric elements, each of which is attached to outer end faces of adjacent ones of said zigzag elements.
Claim 10
Dependent Claim
38 words
A piezoelectric actuator as claimed in claim 5, in which said at least one expansible piezoelectric element comprises a plurality of expansible piezoelectric elements which are respectively attached to opposing surfaces of adjacent ones of said zigzag elements.
Claim 11
Dependent Claim
103 words
A piezoelectric device comprising a pair of piezoelectric actuators, each of which has first and second ends, said actuators being axially symmetrically arranged relative to each other with said first ends of said actuators being connected to each other, each of said actuators comprising: a zigzag-shaped actuator body comprising a plurality of zigzag elements connected together; at least one expansible piezoelectric element attached to said zigzag-shaped actuator body; and wherein said at least one expansible piezoelectric element is expandable and contractible so as to constitute a means for positionally shifting said zigzag elements to cause expansion and contraction of said zigzag-shaped actuator body.
Claim 12
Dependent Claim
103 words
A piezoelectric device comprising a pair of piezoelectric actuators, each of which has first and second ends, said actuators being axially symmetrically arranged relative to each other with said first ends of said actuators being connected to each other, each of said actuators comprising: a zigzag-shaped actuator body comprising a plurality of zigzag elements connected together; at least one expansible piezoelectric element attached to said zigzag-shaped actuator body; and wherein said at least one expansible piezoelectric element is expandable and contractible so as to constitute a means for positionally shifting said zigzag elements to cause expansion and contraction of said zigzag-shaped actuator body.
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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) | 1998-04-24 | 1998-10-24 | 1999-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-04-24 | 2002-10-24 | 2003-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-04-24 | 2006-10-24 | 2007-04-25 | $7700.00 | Window Closed / Lapsed |