GB0115066D0 - Fabrication of a piezoelectric article - Google Patents

Fabrication of a piezoelectric article

Info

Publication number
GB0115066D0
GB0115066D0 GBGB0115066.3A GB0115066A GB0115066D0 GB 0115066 D0 GB0115066 D0 GB 0115066D0 GB 0115066 A GB0115066 A GB 0115066A GB 0115066 D0 GB0115066 D0 GB 0115066D0
Authority
GB
United Kingdom
Prior art keywords
coiled
tube
piezoelectric
curved
wound
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.)
Ceased
Application number
GBGB0115066.3A
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
Priority to GBGB0115066.3A priority Critical patent/GB0115066D0/en
Publication of GB0115066D0 publication Critical patent/GB0115066D0/en
Priority to GB0400643A priority patent/GB2393323B/en
Priority to PCT/GB2002/002848 priority patent/WO2002103819A2/en
Priority to AU2002311465A priority patent/AU2002311465A1/en
Ceased 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
    • H10N30/01—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)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
  • Bending Of Plates, Rods, And Pipes (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.
GBGB0115066.3A 2001-06-20 2001-06-20 Fabrication of a piezoelectric article Ceased GB0115066D0 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GBGB0115066.3A GB0115066D0 (en) 2001-06-20 2001-06-20 Fabrication of a piezoelectric article
GB0400643A GB2393323B (en) 2001-06-20 2002-06-19 Making extruded articles
PCT/GB2002/002848 WO2002103819A2 (en) 2001-06-20 2002-06-19 Manufacturing of coil-shaped piezoelectric articles
AU2002311465A AU2002311465A1 (en) 2001-06-20 2002-06-19 Manufacturing of coil-shaped piezoelectric articles

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
GB0115066D0 true GB0115066D0 (en) 2001-08-15

Family

ID=9916995

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB0115066.3A Ceased GB0115066D0 (en) 2001-06-20 2001-06-20 Fabrication of a piezoelectric article
GB0400643A Expired - Fee Related GB2393323B (en) 2001-06-20 2002-06-19 Making extruded articles

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB0400643A Expired - Fee Related GB2393323B (en) 2001-06-20 2002-06-19 Making extruded 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
US20100098965A1 (en) * 2007-01-24 2010-04-22 Thomas Mask Method for forming a concentric multiple looped structure

Family Cites Families (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
EP0089770B1 (en) * 1982-03-18 1987-03-11 British Telecommunications Piezoelectric and pyroelectric film
GB2322232B (en) * 1997-02-11 2001-02-21 1 Ipr Ltd 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
WO2001047318A2 (en) * 1999-12-21 2001-06-28 1... Limited Loudspeaker using an electro-active device

Also Published As

Publication number Publication date
WO2002103819A2 (en) 2002-12-27
WO2002103819A3 (en) 2003-05-30
GB2393323A (en) 2004-03-24
GB2393323B (en) 2004-12-22
GB0400643D0 (en) 2004-02-11
AU2002311465A1 (en) 2003-01-02

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Legal Events

Date Code Title Description
AT Applications terminated before publication under section 16(1)