WO2002103819A3 - Manufacturing of coil-shaped piezoelectric articles - Google Patents

Manufacturing of coil-shaped piezoelectric articles Download PDF

Info

Publication number
WO2002103819A3
WO2002103819A3 PCT/GB2002/002848 GB0202848W WO02103819A3 WO 2002103819 A3 WO2002103819 A3 WO 2002103819A3 GB 0202848 W GB0202848 W GB 0202848W WO 02103819 A3 WO02103819 A3 WO 02103819A3
Authority
WO
WIPO (PCT)
Prior art keywords
coiled
tube
piezoelectric
coil
curved
Prior art date
Application number
PCT/GB2002/002848
Other languages
French (fr)
Other versions
WO2002103819A2 (en
Inventor
Richard John Topliss
Ursula Ruth Lenel
David Livingstone
Anthony Hooley
David Henry Pearce
Gareth Mckevitt
Mark Richard Shepherd
Original Assignee
Limted 1
Richard John Topliss
Ursula Ruth Lenel
David Livingstone
Anthony Hooley
David Henry Pearce
Gareth Mckevitt
Mark Richard Shepherd
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 Limted 1, Richard John Topliss, Ursula Ruth Lenel, David Livingstone, Anthony Hooley, David Henry Pearce, Gareth Mckevitt, Mark Richard Shepherd filed Critical Limted 1
Priority to AU2002311465A priority Critical patent/AU2002311465A1/en
Priority to GB0400643A priority patent/GB2393323B/en
Publication of WO2002103819A2 publication Critical patent/WO2002103819A2/en
Publication of WO2002103819A3 publication Critical patent/WO2002103819A3/en

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
    • H10N30/01—Manufacture or treatment
    • H10N30/08—Shaping or machining of piezoelectric or electrostrictive bodies
    • H10N30/084—Shaping or machining of piezoelectric or electrostrictive bodies by moulding or extrusion
    • 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

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

A recently-invented form of coiled piezoelectric actuator is one wherein a multiple-layer composite of piezoelectric material interleaved with activation electrodes is formed by extrusion in the shape of a ribbon and then curved around to form a heleix which is itself then bent, curved, wound or coiled to produce the desired double-wound object. The present invention relates to a different way of fabricating a coiled-coil device. Rather than starting from a tape of multilayer piezoelectric/electrode material, the invention proposes that there be made - conveniently by extrusion - a tube of piezoelectric/electrode material, and that this tube then be cut through in a helical fashion to produce the first stage of the desired helical article. And by constructing this tube on and around a plastically-flexible mandrel the combination of mandrel-borne thus-cut tube can then wound, or coiled, or otherwise curved/bent into the desired coiled-coil form.
PCT/GB2002/002848 2001-06-20 2002-06-19 Manufacturing of coil-shaped piezoelectric articles WO2002103819A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2002311465A AU2002311465A1 (en) 2001-06-20 2002-06-19 Manufacturing of coil-shaped piezoelectric articles
GB0400643A GB2393323B (en) 2001-06-20 2002-06-19 Making extruded articles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0115066.3 2001-06-20
GBGB0115066.3A GB0115066D0 (en) 2001-06-20 2001-06-20 Fabrication of a piezoelectric article

Publications (2)

Publication Number Publication Date
WO2002103819A2 WO2002103819A2 (en) 2002-12-27
WO2002103819A3 true WO2002103819A3 (en) 2003-05-30

Family

ID=9916995

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2002/002848 WO2002103819A2 (en) 2001-06-20 2002-06-19 Manufacturing of coil-shaped piezoelectric articles

Country Status (3)

Country Link
AU (1) AU2002311465A1 (en)
GB (2) GB0115066D0 (en)
WO (1) WO2002103819A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008091644A2 (en) * 2007-01-24 2008-07-31 Thomas Mask Method for forming a concentric multiple looped structure

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4135109A (en) * 1977-09-09 1979-01-16 Westinghouse Electric Corp. High powered piezoelectric cylindrical transducer with threads cut into the wall
EP0089770A1 (en) * 1982-03-18 1983-09-28 British Telecommunications Piezoelectric and pyroelectric film
GB2322232A (en) * 1997-02-11 1998-08-19 1 Ipr Limited Linear motors and bearings therefor
DE19814697C1 (en) * 1998-04-01 1999-10-21 Doru Constantin Lupasco Piezoelectric actuator, especially multilayer ceramic piezo-actuator used as positioning device, ultrasonic emitter, valve controller or sensor
WO2001047041A2 (en) * 1999-12-21 2001-06-28 1... Limited Electro-active devices

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4135109A (en) * 1977-09-09 1979-01-16 Westinghouse Electric Corp. High powered piezoelectric cylindrical transducer with threads cut into the wall
EP0089770A1 (en) * 1982-03-18 1983-09-28 British Telecommunications Piezoelectric and pyroelectric film
GB2322232A (en) * 1997-02-11 1998-08-19 1 Ipr Limited Linear motors and bearings therefor
DE19814697C1 (en) * 1998-04-01 1999-10-21 Doru Constantin Lupasco Piezoelectric actuator, especially multilayer ceramic piezo-actuator used as positioning device, ultrasonic emitter, valve controller or sensor
WO2001047041A2 (en) * 1999-12-21 2001-06-28 1... Limited Electro-active devices

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JIAO B L ET AL: "Torsional modes in piezo helical springs", IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS AND FREQUENCY CONTROL, vol. 46, no. 1, January 1999 (1999-01-01), pages 147 - 151, XP002237297, ISSN: 0885-3010 *

Also Published As

Publication number Publication date
GB0115066D0 (en) 2001-08-15
WO2002103819A2 (en) 2002-12-27
GB2393323A (en) 2004-03-24
GB0400643D0 (en) 2004-02-11
AU2002311465A1 (en) 2003-01-02
GB2393323B (en) 2004-12-22

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