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GB2399679B - Curved electro-active actuators - Google Patents

Curved electro-active actuators

Info

Publication number
GB2399679B
GB2399679B GB0416569A GB0416569A GB2399679B GB 2399679 B GB2399679 B GB 2399679B GB 0416569 A GB0416569 A GB 0416569A GB 0416569 A GB0416569 A GB 0416569A GB 2399679 B GB2399679 B GB 2399679B
Authority
GB
United Kingdom
Prior art keywords
electro
actuators
active actuators
contour
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB0416569A
Other versions
GB2399679A (en
GB0416569D0 (en
Inventor
Richard Topliss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
1 Ltd
Original Assignee
1 Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 1 Ltd filed Critical 1 Ltd
Publication of GB0416569D0 publication Critical patent/GB0416569D0/en
Publication of GB2399679A publication Critical patent/GB2399679A/en
Application granted granted Critical
Publication of GB2399679B publication Critical patent/GB2399679B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/20—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators
    • H10N30/204—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators using bending displacement, e.g. unimorph, bimorph or multimorph cantilever or membrane benders
    • H10N30/2041—Beam type
    • H10N30/2042—Cantilevers, i.e. having one fixed end

Landscapes

  • Micromachines (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)

Abstract

Electro-active actuators and methods of manufacturing such actuators are described having a longitudinally extended layer of electro-active material bent to form a non-straight, curved line or contour of uniform or non-uniform curvature, which line or contour having section with a mean radius of curvature to thickness ratio r/t close to 0.5. The layer is preferably monolithic with no buried electrode layer or layers, thus facilitating manufacture.
GB0416569A 2002-01-23 2003-01-22 Curved electro-active actuators Expired - Fee Related GB2399679B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0201458.7A GB0201458D0 (en) 2002-01-23 2002-01-23 Curved electro-active actuators
PCT/GB2003/000201 WO2003063262A2 (en) 2002-01-23 2003-01-22 Curved electro-active actuators

Publications (3)

Publication Number Publication Date
GB0416569D0 GB0416569D0 (en) 2004-08-25
GB2399679A GB2399679A (en) 2004-09-22
GB2399679B true GB2399679B (en) 2005-06-22

Family

ID=9929559

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB0201458.7A Ceased GB0201458D0 (en) 2002-01-23 2002-01-23 Curved electro-active actuators
GB0416569A Expired - Fee Related GB2399679B (en) 2002-01-23 2003-01-22 Curved electro-active actuators

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB0201458.7A Ceased GB0201458D0 (en) 2002-01-23 2002-01-23 Curved electro-active actuators

Country Status (2)

Country Link
GB (2) GB0201458D0 (en)
WO (1) WO2003063262A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1717874B1 (en) * 2005-04-28 2010-05-05 Brother Kogyo Kabushiki Kaisha Method of producing piezoelectric actuator
WO2014085498A1 (en) 2012-11-27 2014-06-05 Cfd Research Corporation Multi-chambered cell culture device to model organ microphysiology

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3816774A (en) * 1972-01-28 1974-06-11 Victor Company Of Japan Curved piezoelectric elements
US4330730A (en) * 1980-03-27 1982-05-18 Eastman Kodak Company Wound piezoelectric polymer flexure devices
US4363993A (en) * 1979-12-12 1982-12-14 Sony Corporation Piezoelectric electro-mechanical bimorph transducer
EP0528279A1 (en) * 1991-08-09 1993-02-24 Kureha Kagaku Kogyo Kabushiki Kaisha Flexible piezoelectric device
US5559387A (en) * 1994-05-13 1996-09-24 Beurrier; Henry R. Piezoelectric actuators
US5607535A (en) * 1993-05-20 1997-03-04 Fujitsu, Ltd. Method of manufacturing a laminated piezoelectric actuator
WO1998007183A2 (en) * 1996-07-25 1998-02-19 Materials Systems Incorporated Serpentine cross section piezoelectric actuator
WO2001047041A2 (en) * 1999-12-21 2001-06-28 1... Limited Electro-active devices
GB2375884A (en) * 2001-05-23 2002-11-27 1 Ltd Helical electro-active devices

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3816774A (en) * 1972-01-28 1974-06-11 Victor Company Of Japan Curved piezoelectric elements
US4363993A (en) * 1979-12-12 1982-12-14 Sony Corporation Piezoelectric electro-mechanical bimorph transducer
US4330730A (en) * 1980-03-27 1982-05-18 Eastman Kodak Company Wound piezoelectric polymer flexure devices
EP0528279A1 (en) * 1991-08-09 1993-02-24 Kureha Kagaku Kogyo Kabushiki Kaisha Flexible piezoelectric device
US5607535A (en) * 1993-05-20 1997-03-04 Fujitsu, Ltd. Method of manufacturing a laminated piezoelectric actuator
US5559387A (en) * 1994-05-13 1996-09-24 Beurrier; Henry R. Piezoelectric actuators
WO1998007183A2 (en) * 1996-07-25 1998-02-19 Materials Systems Incorporated Serpentine cross section piezoelectric actuator
WO2001047041A2 (en) * 1999-12-21 2001-06-28 1... Limited Electro-active devices
GB2375884A (en) * 2001-05-23 2002-11-27 1 Ltd Helical electro-active devices

Also Published As

Publication number Publication date
GB2399679A (en) 2004-09-22
WO2003063262A2 (en) 2003-07-31
WO2003063262A3 (en) 2004-03-04
GB0416569D0 (en) 2004-08-25
GB0201458D0 (en) 2002-03-13

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20170122