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
Grant status
Grant
Patent type
Prior art keywords
electro
actuators
active actuators
layer
contour
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
Grant date

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L41/00Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L41/08Piezo-electric or electrostrictive devices
    • H01L41/09Piezo-electric or electrostrictive devices with electrical input and mechanical output, e.g. actuators, vibrators
    • H01L41/0926Piezo-electric or electrostrictive devices with electrical input and mechanical output, e.g. actuators, vibrators using bending displacement, e.g. unimorph, bimorph or multimorph cantilever or membrane benders
    • H01L41/0933Beam type
    • H01L41/094Cantilevers, i.e. having one fixed end

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)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0201458A GB0201458D0 (en) 2002-01-23 2002-01-23 Curved electro-active actuators
PCT/GB2003/000201 WO2003063262A3 (en) 2002-01-23 2003-01-22 Curved electro-active actuators

Publications (3)

Publication Number Publication Date
GB0416569D0 GB0416569D0 (en) 2004-08-25
GB2399679A true 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
GB0201458A 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
GB0201458A Ceased GB0201458D0 (en) 2002-01-23 2002-01-23 Curved electro-active actuators

Country Status (2)

Country Link
GB (2) GB0201458D0 (en)
WO (1) WO2003063262A3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602006014051D1 (en) 2005-04-28 2010-06-17 Brother Ind Ltd A process for producing a piezoelectric actuator

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 Type
GB2399679A (en) 2004-09-22 application
GB0416569D0 (en) 2004-08-25 grant
WO2003063262A2 (en) 2003-07-31 application
GB0201458D0 (en) 2002-03-13 grant
WO2003063262A3 (en) 2004-03-04 application

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Legal Events

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

Effective date: 20170122