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US5268082A
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US
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Actuator element
Assignee: National Institute of Advanced Industrial Science and Technology
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Filing: 1992-02-26
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Granted: 1993-12-07
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Expires: 2012-02-26
Abstract
Abstract An actuator element comprises an ion exchange membrane and a pair of electrodes attached to opposite surfaces of the ion exchange membrane; the ion exchange membrane in a water-containing state being caused to bend and/or deform by application of an electric potential difference thereacross.
Inventors
- 👤 Keiskue Oguro
- 👤 Hiroyasu Takenaka
- 👤 Youji Kawami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:20
CPC Classifications
H; H02; H02K; H02K11/00; H02N; H02N11/00; H02N11/006; Y; Y10; Y10S; Y10S310/00; Y10S310/80
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
102 words
An actuator element comprising: an organic ion exchange membrane; a pair of thin metallic layer electrodes attached to opposite surfaces of said membrane; means for fixing at least one part of said membrane to a stationary position wherein at least one part of said membrane is not fixed to the stationary position; and means for applying an electric potential difference across said membrane in a water-containing state to bend and deform part of said membrane other than said at least one part fixed to a stationary position wherein at least one part of said membrane is not fixed to the stationary position.
Claim 2
Dependent Claim
102 words
An actuator element comprising: an organic ion exchange membrane; a pair of thin metallic layer electrodes attached to opposite surfaces of said membrane; means for fixing at least one part of said membrane to a stationary position wherein at least one part of said membrane is not fixed to the stationary position; and means for applying an electric potential difference across said membrane in a water-containing state to bend and deform part of said membrane other than said at least one part fixed to a stationary position wherein at least one part of said membrane is not fixed to the stationary position.
Claim 3
Dependent Claim
19 words
An actuator element according to claim 10, wherein the organic ion exchange membrane is a cation ion exchange membrane.
Claim 4
Dependent Claim
19 words
An actuator element according to claim 10, wherein the organic ion exchange membrane is an anion ion exchange membrane.
Claim 5
Dependent Claim
18 words
An actuator element according to claim 2, wherein the cation exchange membrane is a polystyrene sulfonic acid membrane.
Claim 6
Dependent Claim
18 words
An actuator element according to claim 2, wherein the cation exchange membrane is a fluororesin ion exchange membrane.
Claim 7
Dependent Claim
18 words
An actuator element according to claim 5, wherein the fluororesin ion exchange membrane is a perfluorosulfonic acid membrane.
Claim 8
Dependent Claim
17 words
An actuator element according to claim 3, wherein the anion ion exchange membrane is a perfluoroammonium membrane.
Claim 9
Dependent Claim
23 words
An actuator element according to claim 10, wherein the organic ion exchange membrane is put in a water-containing state by soaking in water.
Claim 10
Dependent Claim
43 words
An actuator element according to claim 10, wherein the pair of electrodes attached to opposite surfaces of the organic ion exchange membrane are formed of at least one noble metal selected from the group consisting of gold, platinum, iridium, palladium, rhodium and ruthenium.
References Cited (Backward Citations)
US4191618A
Cited
US4272353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-12-06 | 1997-06-07 | 1997-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-06 | 2001-06-07 | 2001-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-06 | 2005-06-07 | 2005-12-07 | $7700.00 | Window Closed / Lapsed |