WO2003083957B1 - Piezoelectric actuator for moving folded-back arms - Google Patents

Piezoelectric actuator for moving folded-back arms

Info

Publication number
WO2003083957B1
WO2003083957B1 PCT/US2003/008753 US0308753W WO03083957B1 WO 2003083957 B1 WO2003083957 B1 WO 2003083957B1 US 0308753 W US0308753 W US 0308753W WO 03083957 B1 WO03083957 B1 WO 03083957B1
Authority
WO
WIPO (PCT)
Prior art keywords
folded
rigid
transfer member
force transfer
arm portions
Prior art date
Application number
PCT/US2003/008753
Other languages
French (fr)
Other versions
WO2003083957A2 (en
WO2003083957A3 (en
Inventor
John Anthony Bugel
Jeff Moler
Original Assignee
Viking Technologies Lc
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 Viking Technologies Lc filed Critical Viking Technologies Lc
Priority to CA2479847A priority Critical patent/CA2479847C/en
Priority to JP2003581271A priority patent/JP2005522163A/en
Priority to EP03728268.8A priority patent/EP1490913B1/en
Priority to AU2003233420A priority patent/AU2003233420A1/en
Publication of WO2003083957A2 publication Critical patent/WO2003083957A2/en
Publication of WO2003083957A3 publication Critical patent/WO2003083957A3/en
Publication of WO2003083957B1 publication Critical patent/WO2003083957B1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/12—Pivotal connections incorporating flexible connections, e.g. leaf springs
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
    • H02N2/04—Constructional details
    • H02N2/043—Mechanical transmission means, e.g. for stroke amplification

Abstract

A piezoelectric actuator assembly for actuating industrial control valves or clamps provides a compact actuator including a single piece main structure with integrated hinge, mechanical lever, and spring in a shape such that in response to electrical activation, the piezoelectric device (14) transfers mechanical energy from a predetermined axis into the force transfer member operably positioned for driving at least one pivotable arm (18, 20) portion in rotational movement.

Claims

AMENDED CLAIMS
[received by the International Bureau on 02 February 2004 (02.02.04) new claims 23-28 added; remaining claims unchanged.
extending from the rigid arm portions such that the rigid non-flexing portion is positioned interposed between the first and second pivotable folded-back arm portions,, a pair of opposing surfaces with one opposing surface on each of the pivotable folded-back arm portions for movement relative to due another, and a rigid, non-flexing force transfer member operably positioned for driving the first and second pivotable folded-back arm portions in rotational movement with a loss of motion of less than 40%, such that the force transfer member is adjacent one end. of the pivotable folded-back arm portions and the opposing surfaces of the pivotable folded-back arm portions are adjacent to the web of the rigid non-flexing portion of the support; and a piezoelectric actuator operably engaged between the rigid non-flexing portion and the force transfer member to drive the force transfer member relative to the rigid non-flexing portion to pivot the first and second pivotable folded-back aim portions in response to an electrical activation of tie actuator.
20, The apparatus of claim 19 wherein the web and rigid arm portions of the support are a. single monolithic piece.
21. The apparatus of claim 19 wherein the pivotable arm portions are mechanically fastened to the support,
22, The apparatus of claim 19 wherein the apparatus is operated in an mechaoicaHy resonant mode producing oscillatory motion.
23. The apparatus of claim 1, wherein Hie force transfer member extends outwardly to a position adjacent the at least one pivotable folded-back arm portion. 13
24. The apparatus of claim 10, wherein the force transfer member extends outwardly to a position at least partially interposed in a gap between the first and second pivotable folded-back arm portions.
25. The apparatus of claim 19, wherein the force transfer member extends outwardly to a position at least partially inteiposed in a gap between the first and second pivotable folded-back arm portions.
26. The apparatus of claim 1, wherein tie force transfer member is a rigid non-flexing member for driving the at least one folded-back arm portion with a loss of motion less than 40 % .
27. The apparatus of claim 10, wherein the force transfer member is a rigid non-flexing member for driving the first and second folded-back arm portions with a loss of motion less than 40 % ; first and second flexible hinge web portions extending in close proximity to one another allowing flexing movement of at least one rigid folded back arm with respect to the rigid portion and the force transfer member.
28. The apparatus of claim 19, wherein the force transfer member is a rigid non-flexing member for driving first and second folded-back arm portions with a loss of motion less than 40 % ; first and Second flexible hinge web portions extending in close proximity to one another, the first hinge web portion extending between the force transfer member and operably associated with one rigid folded bads: arm, the second hinge web portion extending between the rigid portion and the one rigid folded back arm.
PCT/US2003/008753 2002-03-27 2003-03-25 Piezoelectric actuator for moving folded-back arms WO2003083957A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA2479847A CA2479847C (en) 2002-03-27 2003-03-25 Piezoelectric actuator for moving folded-back arms
JP2003581271A JP2005522163A (en) 2002-03-27 2003-03-25 Apparatus for moving a folding arm having a pair of opposing surfaces in response to electrical actuation
EP03728268.8A EP1490913B1 (en) 2002-03-27 2003-03-25 Piezoelectric actuator for moving folded-back arms
AU2003233420A AU2003233420A1 (en) 2002-03-27 2003-03-25 Piezoelectric actuator for moving folded-back arms

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/107,951 US6759790B1 (en) 2001-01-29 2002-03-27 Apparatus for moving folded-back arms having a pair of opposing surfaces in response to an electrical activation
US10/107,951 2002-03-27

Publications (3)

Publication Number Publication Date
WO2003083957A2 WO2003083957A2 (en) 2003-10-09
WO2003083957A3 WO2003083957A3 (en) 2004-02-26
WO2003083957B1 true WO2003083957B1 (en) 2004-05-27

Family

ID=28673586

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/008753 WO2003083957A2 (en) 2002-03-27 2003-03-25 Piezoelectric actuator for moving folded-back arms

Country Status (7)

Country Link
US (1) US6759790B1 (en)
EP (1) EP1490913B1 (en)
JP (1) JP2005522163A (en)
CN (1) CN100466317C (en)
AU (1) AU2003233420A1 (en)
CA (1) CA2479847C (en)
WO (1) WO2003083957A2 (en)

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EP1490913A2 (en) 2004-12-29
AU2003233420A1 (en) 2003-10-13
WO2003083957A2 (en) 2003-10-09
US20040124747A1 (en) 2004-07-01
US6759790B1 (en) 2004-07-06
JP2005522163A (en) 2005-07-21
WO2003083957A3 (en) 2004-02-26
CN1647290A (en) 2005-07-27
CN100466317C (en) 2009-03-04
CA2479847A1 (en) 2003-10-09
AU2003233420A8 (en) 2003-10-13
EP1490913B1 (en) 2017-06-21
CA2479847C (en) 2013-03-19

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