EP1181988A2 - Piezoelektrischer Ultraschallwandler - Google Patents
Piezoelektrischer Ultraschallwandler Download PDFInfo
- Publication number
- EP1181988A2 EP1181988A2 EP01119332A EP01119332A EP1181988A2 EP 1181988 A2 EP1181988 A2 EP 1181988A2 EP 01119332 A EP01119332 A EP 01119332A EP 01119332 A EP01119332 A EP 01119332A EP 1181988 A2 EP1181988 A2 EP 1181988A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- ultrasonic transducer
- tension spring
- transducer according
- peripheral recess
- clamping
- 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.)
- Granted
Links
- 238000002604 ultrasonography Methods 0.000 title description 3
- 230000002093 peripheral effect Effects 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 12
- 238000013016 damping Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000001845 vibrational spectrum Methods 0.000 claims description 2
- 238000005266 casting Methods 0.000 claims 1
- 230000004323 axial length Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004382 potting Methods 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- TVTJUIAKQFIXCE-HUKYDQBMSA-N 2-amino-9-[(2R,3S,4S,5R)-4-fluoro-3-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-7-prop-2-ynyl-1H-purine-6,8-dione Chemical compound NC=1NC(C=2N(C(N(C=2N=1)[C@@H]1O[C@@H]([C@H]([C@H]1O)F)CO)=O)CC#C)=O TVTJUIAKQFIXCE-HUKYDQBMSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229940125851 compound 27 Drugs 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
- B06B1/0607—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements
- B06B1/0611—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements in a pile
- B06B1/0618—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements in a pile of piezo- and non-piezoelectric elements, e.g. 'Tonpilz'
Definitions
- the invention relates to an ultrasonic transducer, in particular of the longitudinal transducer type, with at least one arranged between two clamping sections piezoelectric element and at least one tensioning element, with which the piezoelectric element is biased via the clamping sections is.
- Such ultrasonic transducers are also used as composite longitudinal transducers or ⁇ / 2 transducer.
- the one provided with electrode surfaces piezoelectric element is polarized and contacted in such a way that when applying an AC voltage of a suitable frequency, the overall structure resonates with respect to the axial direction.
- the Piezo element arranged between the clamping sections is located thereby in a range of maximum mechanical tension and minimum mechanical vibration speed.
- the radiation of the ultrasound takes place from the free end face of one of the acting as a waveguide Span sections.
- the piezoelectric Element prestressed over the clamping sections by means of a clamping element.
- the object of the invention is an ultrasonic transducer of the aforementioned To create type with the smallest possible size, in which one achieved the greatest possible bias of the piezoelectric element can be without the vibration properties of the ultrasonic transducer be adversely affected.
- the tension spring according to the invention Due to the small axial length of the tension spring according to the invention this only works with the directly on the piezoelectric element adjacent areas of the clamping sections together. in these areas are the vibration amplitudes and vibration speeds small.
- the tension spring according to the invention with the screwed two clamping sections by placing them under the intermediate layer of the piezoelectric element from opposite sides into the annular Tension spring can be screwed in.
- Allow minimal axial length is avoided that the tension spring with the clamping sections on axially far from the piezoelectric element distant thread areas interacts with strong vibration activity. Disruptive damping effects in the thread areas avoided in this way.
- the tension spring by suitable Dimensioning the circumferential recess specifically to the respective ultrasonic transducer can be adjusted.
- the circumferential recess can advantageously be dimensioned in such a way that the desired one Target bias for the piezoelectric element on the one hand there is sufficient travel and, on the other hand, the maximum permissible tension or resilience of the material forming the tension spring is not exceeded.
- the circumferential recess can be targeted - in particular also in Depending on the dimensions of the tension spring itself - dimensioned in this way be that in the working frequency range of the ultrasonic transducer no natural vibration modes of the tension spring occur. In particular the operation of broadband longitudinal transducers is thereby in the main transmission frequency range or working frequency range through the Tension spring not affected.
- the tension spring through corresponding configuration of the peripheral recess formed in this way are that such natural vibration modes of the tension spring avoided that are outside the working frequency range of the ultrasonic transducer lie, but still to adverse interference from can operate it.
- the large spring travel possible due to the invention have the advantage that the influence of changes in environmental parameters such as the temperature on the operation of the ultrasonic transducer is minimal and Aging processes in the spring material can be compensated. According to the invention a high resistance to varying work or Achieve environmental conditions and against aging.
- the peripheral recess is preferably slit or slit-shaped. Furthermore, the peripheral recess extends radially Direction preferred through the entire wall of the ring spring, i.e. preferably is the wall of the ring spring over the angular range of the circumferential recess interrupted in the axial direction.
- the peripheral recess at least partially with a vibration-damping Material is filled. Disruptive swing-in and swing-out processes can be specifically damped by such a measure and on this Way ineffective.
- a potting material is preferably used with which the peripheral recess is poured out.
- Providing a circumferential recess is particularly advantageous at least partially filling damping mass in applications, at which are sent short ultrasonic pulses with the ultrasonic transducer or should be received, as this is the transient and decay function of the ultrasonic transducer is of great importance in terms of measurement technology due.
- the tension spring has two axially spaced circumferential recesses.
- the object on which the invention is based also becomes satisfactory by providing three or more circumferential recesses solved.
- the avoidance or suppression of the disturbing natural vibration modes is then associated with greater effort.
- the components of the ultrasonic transducer depending on the to optimize the optimized properties of the tension spring instead of Adapt spring to the ultrasonic transducer.
- FIGS Subclaims Further preferred embodiments of the invention are also shown in FIGS Subclaims, the description and the drawing.
- the ultrasonic transducer according to the invention comprises two cylindrical ones Clamping sections 12, 14, one of which 12 made of a heavy metal such as. Steel and the other 14 made of a light metal, in particular Titanium, aluminum or magnesium is made. According to the invention in principle, other materials are also possible.
- the two clamping sections 12, 14 are each with an external thread 13, 15 provided, via which they with the internal thread 19 of an annular Tension spring 18 are screwed.
- the tension spring 18 serves as a tension member, with a piezoelectric element 16 between them facing end faces of the screwed with the tension spring 18 Clamping sections 12, 14 can be compressed.
- the clamping sections 12, 14 can each be desired Bias of the piezoelectric element 16 can be set.
- the piezoelectric element 16 is preferably made of a piezoceramic manufactured and can - as indicated in the figure - in several Disks 16a, 16b be divided.
- the piezo disks 16a, 16b are provided with flat electrodes 28 which via connections 32 with an alternating voltage of a predetermined frequency can be controlled such that the axial length of the piezoelectric Element 16, i.e. each the slice thickness, according to the time varied.
- the piezo element 16 thus forms an axial force source with which with a suitable frequency of the applied AC voltage, the overall arrangement set in axial vibrations or longitudinal vibrations and can be stimulated to a longitudinal resonance.
- the free end face of the one made of light material (in the figure right) clamping section 14 serves as a transmitting and / or receiving surface 34, via which the ultrasonic signals are emitted or via which ultrasound signals are received.
- the piezoelectric element 16 is in the largest mechanical range Tension and lowest vibration speed of the overall structure lies, the vibration speed is in the plane of the Sending and / or receiving area 34 maximum.
- This effect can be reinforced that the existing of the light material Clamping section 14 in the direction of the transmitting and / or receiving surface 34 is tapered, but before the free end of the Diameter of the clamping section 14 increases again so that the Transmitting and / or receiving surface 34 from a plate-shaped end section 50 is formed. This will minimize weight achieved, the size of the due to the area-enlarging plate 50 Transmitting or receiving area 34 is not reduced.
- the clamping section 14 by dashed lines only indicated schematically.
- such a composite structure in which an or multi-part piezoelectric element 16 between two clamping sections 12, 14 is clamped also as a longitudinal oscillator or as ⁇ / 2 transducer.
- Such an ultrasonic transducer is used, for example, in industrial applications used for distance measurement and flow measurement by short ultrasonic pulses are sent and received.
- a central channel 36 is provided in the left clamping section 12 in the figure, its central axis with the longitudinal axis 27 of the overall arrangement coincides.
- the channel 36 and central openings 17a, 17b in the Piezo disks 16a, 16b serve to receive connecting lines 38 to control the electrodes 28 via the connections 32, this in the figure is only indicated schematically.
- the tension spring 18 for biasing the piezo element 16 has a low one axial length and is in a middle, in the area of the piezo element 16 arranged section with respect to end edge sections, in which the tension spring 18 with the tensioning sections 12, 14 is screwed, expanded radially outwards.
- the circumferential recesses 22, 24 extend as a function of one depending on the application, larger or smaller angular range, i.e. greater or smaller part of the circumference of the tension spring 18th It is preferred if the remaining peripheral sections that in each case two of the regions axially separated by the cutouts 22, 24 Connect 18a, 18b, 18c of the tension spring 18 to one another, in the circumferential direction are mutually offset.
- the two recesses 22, 24 such that they only in the circumferential direction by a comparatively short web are interrupted, with the two webs 180 ° against each other Are arranged offset staggered.
- the peripheral cutouts 22, 24 are dependent on the dimensions, in particular the axial length of the tension spring 18 dimensioned in this way and arranged that in the working frequency range or main transmission frequency range of the ultrasonic transducer no natural vibrations the tension spring 18 arise.
- the tension spring 18 can thus be matched Design of the circumferential recesses 22, 24 in a particularly simple manner Way to the respective ultrasonic transducer or to its required Operating parameters are adjusted.
- the circumferential recesses 22, 24 are also provided with a damping mass 26 poured out, causing annoying settling and swinging out effects be dampened.
- Such transient and decay processes can by outside the working frequency range of the ultrasonic transducer lying natural vibrations of the tension spring 18 are excited. in principle is a satisfactory operation of the ultrasonic transducer according to the invention also possible without pouring out the cutouts 22, 24. Without the vibration-damping material in the circumferential recesses 22, 24 it can happen under certain constellations, that the operation of the ultrasonic transducer by the natural vibrations the ring spring 18 is impaired. This is due to the material in the Cutouts 22, 24 safely avoided.
- the tension spring 18 can be targeted to the respective Conditions to be adjusted.
- Deviating from the embodiment of the invention described above with a two-stage recess, slot or gap construction can also the tension spring 18 only with a single circumferential recess or alternatively with three or even larger ones Number of circumferential recesses can be provided.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Surgical Instruments (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
Description
- 12
- Spannabschnitt
- 13
- Außengewinde
- 14
- Spannabschnitt
- 15
- Außengewinde
- 16
- piezoelektrisches Element
- 16a
- Scheibe
- 16b
- Scheibe
- 17a
- Durchbruch
- 17b
- Durchbruch
- 18
- Spannorgan, Spannfeder
- 18a
- Bereiche der Spannfeder
- 18b
- Bereiche der Spannfeder
- 18c
- Bereiche der Spannfeder
- 19
- Innengewinde
- 22
- Umfangsaussparung
- 24
- Umfangsaussparung
- 25
- Dämpfungsmaterial
- 26
- Vergußmasse
- 27
- Längsachse
- 28
- Elektrode
- 32
- Anschluß
- 34
- Sende- und/oder Empfangsfläche
- 36
- Kanal
- 38
- Anschlußleitungen
- 50
- plattenförmiger Endabschnitt
Claims (13)
- Ultraschallwandler, insbesondere vom Längsschwinger-Typ, mit zumindest einem zwischen zwei Spannabschnitten (12, 14) angeordneten piezoelektrischen Element (16) und wenigstens einem Spannorgan (18), mit dem das piezoelektrische Element (16) über die Spannabschnitte (12, 14) vorgespannt ist,
dadurch gekennzeichnet, daß als Spannorgan eine ringförmige Spannfeder (18) vorgesehen ist, in deren Wandung wenigstens eine Umfangsaussparung (22, 24) ausgebildet ist. - Ultraschallwandler nach Anspruch 1,
dadurch gekennzeichnet, daß zwei axial beabstandete Umfangsaussparungen (22, 24) vorgesehen sind. - Ultraschallwandler nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß das Eigenschwingungsspektrum der Spannfeder (18) in Abhängigkeit von dem jeweiligen Ultraschallwandler, insbesondere von dessen Arbeitsfrequenzbereich, optimiert ist. - Ultraschallwandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Spannfeder (18) derart ausgebildet ist, daß im Arbeitsfrequenzbereich des Ultraschallwandlers Eigenschwingungen der Spannfeder (18) vermieden sind. - Ultraschallwandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Spannfeder (18) derart ausgebildet ist, daß Ein- und/oder Ausschwingvorgänge, die durch Eigenschwingungen der Spannfeder (18) außerhalb des Arbeitsfrequenzbereiches des Ultraschallwandlers hervorgerufen werden, unterdrückt sind. - Ultraschallwandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Umfangsaussparung (22, 24) zumindest teilweise mit einem schwingungsdämpfenden Material, insbesondere mit einer Vergußmasse (26), gefüllt ist. - Ultraschallwandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Umfangsaussparung (22, 24) schlitz- oder spaltförmig ist. - Ultraschallwandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Umfangsaussparung (22, 24) einen rechteckigen Querschnitt aufweist. - Ultraschallwandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die axialen Begrenzungsflächen der Umfangsaussparung (22, 24) senkrecht zur Längsachse (27) der Spannfeder verlaufen. - Ultraschallwandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Wandung der Spannfeder (18) an der Umfangsaussparung (22, 24) vollständig durchtrennt ist. - Ultraschallwandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Spannfeder (18) im Bereich der Umfangsaussparung (22, 24) gegenüber ihren stirnseitigen Randabschnitten radial nach außen erweitert ist. - Spannorgan für einen Ultraschallwandler nach dem Oberbegriff des Anspruchs 1,
dadurch gekennzeichnet, daß es in Form einer ringförmigen Spannfeder (18) vorgesehen ist, in deren Wandung wenigstens eine Umfangsaussparung (22, 24) ausgebildet ist. - Spannorgan nach Anspruch 12 mit den eine Spannfeder (18) betreffenden Merkmalen eines der Ansprüche 2 bis 11.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10040344 | 2000-08-17 | ||
DE10040344A DE10040344A1 (de) | 2000-08-17 | 2000-08-17 | Ultraschallwandler |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1181988A2 true EP1181988A2 (de) | 2002-02-27 |
EP1181988A3 EP1181988A3 (de) | 2004-10-20 |
EP1181988B1 EP1181988B1 (de) | 2007-03-28 |
Family
ID=7652836
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01119332A Expired - Lifetime EP1181988B1 (de) | 2000-08-17 | 2001-08-10 | Piezoelektrischer Ultraschallwandler |
Country Status (5)
Country | Link |
---|---|
US (1) | US6570295B2 (de) |
EP (1) | EP1181988B1 (de) |
AT (1) | ATE357980T1 (de) |
DE (2) | DE10040344A1 (de) |
ES (1) | ES2280287T3 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101630012A (zh) * | 2008-07-04 | 2010-01-20 | 克朗斯股份有限公司 | 容器检查设备 |
EP4249859A2 (de) | 2022-03-25 | 2023-09-27 | Krohne AG | Ultraschallwandler |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10229925A1 (de) * | 2002-07-04 | 2004-01-15 | Sick Engineering Gmbh | Vorrichtung zum Messen der Strömungsgeschwindigkeit und/oder des Durchflusses eines Fluids |
DE10341422A1 (de) * | 2003-09-09 | 2005-03-31 | Sick Engineering Gmbh | Ultraschallwandleranordnung |
US8087297B2 (en) * | 2004-03-04 | 2012-01-03 | Ludwiczak Damian R | Vibrating debris remover |
US20060288783A1 (en) * | 2005-05-25 | 2006-12-28 | Nsk Corporation | Bearing monitoring system |
KR101496668B1 (ko) * | 2007-06-01 | 2015-02-27 | 악센소르 아베 | 변환기 장치 및 이를 조립하는 방법 |
AT509922B1 (de) | 2011-06-24 | 2013-10-15 | Avl List Gmbh | Kapazitiver ultraschallwandler |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2411401A (en) * | 1942-07-28 | 1946-11-19 | Westinghouse Electric Corp | Accelerometer |
US3351787A (en) * | 1965-01-11 | 1967-11-07 | Kistler Instr Corp | Accelerometer |
US3393331A (en) * | 1966-02-28 | 1968-07-16 | Continental Oil Co | High-temperature probe |
US3860901A (en) * | 1973-06-01 | 1975-01-14 | Raytheon Co | Wide band transducer |
US5319278A (en) * | 1992-06-05 | 1994-06-07 | Nec Corporation | Longitudinal-torsional resonance ultrasonic motor with improved support structure |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2352311A (en) * | 1941-02-07 | 1944-06-27 | Edison Inc Thomas A | Oscillation translating device |
CA933276A (en) * | 1971-02-05 | 1973-09-04 | J. Last Anthony | Ultrasonic motor |
GB1430227A (en) * | 1973-03-07 | 1976-03-31 | Taga Electric Co Ltd | Transducers |
US4193009A (en) * | 1976-01-26 | 1980-03-11 | Durley Benton A Iii | Ultrasonic piezoelectric transducer using a rubber mounting |
US4757227A (en) * | 1986-03-24 | 1988-07-12 | Intersonics Incorporated | Transducer for producing sound of very high intensity |
JP2538033B2 (ja) * | 1989-02-28 | 1996-09-25 | 松下電器産業株式会社 | 平面型超音波アクチュエ―タ |
JP3138973B2 (ja) * | 1992-12-24 | 2001-02-26 | 株式会社新川 | ボンデイング装置 |
-
2000
- 2000-08-17 DE DE10040344A patent/DE10040344A1/de not_active Withdrawn
-
2001
- 2001-08-10 AT AT01119332T patent/ATE357980T1/de active
- 2001-08-10 DE DE50112259T patent/DE50112259D1/de not_active Expired - Lifetime
- 2001-08-10 ES ES01119332T patent/ES2280287T3/es not_active Expired - Lifetime
- 2001-08-10 EP EP01119332A patent/EP1181988B1/de not_active Expired - Lifetime
- 2001-08-30 US US09/944,046 patent/US6570295B2/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2411401A (en) * | 1942-07-28 | 1946-11-19 | Westinghouse Electric Corp | Accelerometer |
US3351787A (en) * | 1965-01-11 | 1967-11-07 | Kistler Instr Corp | Accelerometer |
US3393331A (en) * | 1966-02-28 | 1968-07-16 | Continental Oil Co | High-temperature probe |
US3860901A (en) * | 1973-06-01 | 1975-01-14 | Raytheon Co | Wide band transducer |
US5319278A (en) * | 1992-06-05 | 1994-06-07 | Nec Corporation | Longitudinal-torsional resonance ultrasonic motor with improved support structure |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101630012A (zh) * | 2008-07-04 | 2010-01-20 | 克朗斯股份有限公司 | 容器检查设备 |
CN101630012B (zh) * | 2008-07-04 | 2013-12-11 | 克朗斯股份有限公司 | 容器检查设备 |
EP2141074B1 (de) * | 2008-07-04 | 2015-02-25 | Krones AG | Prüfvorrichtung für Behältnisse |
EP4249859A2 (de) | 2022-03-25 | 2023-09-27 | Krohne AG | Ultraschallwandler |
DE102022107092A1 (de) | 2022-03-25 | 2023-09-28 | Krohne Ag | Ultraschallwandler |
DE102022107092B4 (de) | 2022-03-25 | 2023-12-07 | Krohne Ag | Ultraschallwandler |
Also Published As
Publication number | Publication date |
---|---|
EP1181988B1 (de) | 2007-03-28 |
DE10040344A1 (de) | 2002-02-28 |
DE50112259D1 (de) | 2007-05-10 |
US6570295B2 (en) | 2003-05-27 |
ATE357980T1 (de) | 2007-04-15 |
ES2280287T3 (es) | 2007-09-16 |
US20020041130A1 (en) | 2002-04-11 |
EP1181988A3 (de) | 2004-10-20 |
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