FR2454550A1 - Dispositif a oscillateur fluidique capable de fournir un debit dynamique sur une vaste gamme de possibilites, procede pour son controle et son application a une pomme de douche - Google Patents
Dispositif a oscillateur fluidique capable de fournir un debit dynamique sur une vaste gamme de possibilites, procede pour son controle et son application a une pomme de doucheInfo
- Publication number
- FR2454550A1 FR2454550A1 FR8004818A FR8004818A FR2454550A1 FR 2454550 A1 FR2454550 A1 FR 2454550A1 FR 8004818 A FR8004818 A FR 8004818A FR 8004818 A FR8004818 A FR 8004818A FR 2454550 A1 FR2454550 A1 FR 2454550A1
- Authority
- FR
- France
- Prior art keywords
- showerhead
- possibilities
- controlling
- flow rate
- wide range
- 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.)
- Withdrawn
Links
- 239000012530 fluid Substances 0.000 title abstract 2
- 238000011144 upstream manufacturing Methods 0.000 abstract 2
- 230000007704 transition Effects 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
- B05B1/08—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape of pulsating nature, e.g. delivering liquid in successive separate quantities ; Fluidic oscillators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
- F15C1/00—Circuit elements having no moving parts
- F15C1/22—Oscillators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/206—Flow affected by fluid contact, energy field or coanda effect [e.g., pure fluid device or system]
- Y10T137/218—Means to regulate or vary operation of device
- Y10T137/2185—To vary frequency of pulses or oscillations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/206—Flow affected by fluid contact, energy field or coanda effect [e.g., pure fluid device or system]
- Y10T137/2229—Device including passages having V over T configuration
- Y10T137/2234—And feedback passage[s] or path[s]
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Nozzles (AREA)
- Special Spraying Apparatus (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
- Steroid Compounds (AREA)
- Burglar Alarm Systems (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Lasers (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
L'OSCILLATEUR 14 EST FERME PAR UN COUVERCLE 2 ET COMPORTE UNE INTERCONNEXION 4 RELIANT DEUX ALESAGES 5, 6 PREVUS DANS LA CAVITE DE LA PLAQUE SUPERIEURE 1. L'OSCILLATEUR DELIMITE UNE CHAMBRE AMONT 3 AVEC UNE CHAMBRE D'ENTREE 15 ET UNE ZONE DE SORTIE 11 SEPAREES PAR DES ZONES DE TRANSITION 12, 13, 10 DESIGNE UNE OUVERTURE DE SORTIE. LORSQUE DU FLUIDE ARRIVE EN 15, UN JET EST EMIS ET PASSE DANS LA ZONE AMONT 3 POUR SORTIR EN 10.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/019,250 US4231519A (en) | 1979-03-09 | 1979-03-09 | Fluidic oscillator with resonant inertance and dynamic compliance circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2454550A1 true FR2454550A1 (fr) | 1980-11-14 |
Family
ID=21792222
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8004818A Withdrawn FR2454550A1 (fr) | 1979-03-09 | 1980-03-04 | Dispositif a oscillateur fluidique capable de fournir un debit dynamique sur une vaste gamme de possibilites, procede pour son controle et son application a une pomme de douche |
Country Status (12)
Country | Link |
---|---|
US (3) | US4231519A (fr) |
EP (2) | EP0319594B1 (fr) |
JP (1) | JPS6146681B2 (fr) |
AT (1) | ATE12898T1 (fr) |
BE (2) | BE882128A (fr) |
CA (2) | CA1151073A (fr) |
DE (3) | DE3036776A1 (fr) |
DK (1) | DK469980A (fr) |
ES (1) | ES8100709A1 (fr) |
FR (1) | FR2454550A1 (fr) |
IT (1) | IT1194617B (fr) |
WO (1) | WO1980001884A1 (fr) |
Families Citing this family (83)
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US4337899A (en) * | 1980-02-25 | 1982-07-06 | The Curators Of The University Of Missouri | High pressure liquid jet nozzle system for enhanced mining and drilling |
US4480793A (en) * | 1981-07-02 | 1984-11-06 | Grande Gary R | Liquid distribution device |
EP0129856A3 (fr) * | 1983-06-21 | 1985-12-18 | Lobenstein & Ludwig | Procédé et dispositif de fabrication de briquettes, à partir de résidus de production et de déchets broyés |
US4596364A (en) * | 1984-01-11 | 1986-06-24 | Peter Bauer | High-flow oscillator |
US4721251A (en) * | 1984-07-27 | 1988-01-26 | Nippon Soken, Inc. | Fluid dispersal device |
US4774975A (en) * | 1984-09-17 | 1988-10-04 | Westinghouse Electric Corp. | Method and apparatus for providing oscillating contaminant-removal stream |
US4644854A (en) * | 1985-03-27 | 1987-02-24 | Bowles Fluidics Corporation | Air sweep defroster |
US4694992A (en) * | 1985-06-24 | 1987-09-22 | Bowles Fluidics Corporation | Novel inertance loop construction for air sweep fluidic oscillator |
US4709622A (en) * | 1986-04-07 | 1987-12-01 | Bowles Fluidics Corporation | Fluidic oscillator |
JPS63188298A (ja) * | 1987-01-31 | 1988-08-03 | 東芝テック株式会社 | 電子式キヤツシユレジスタ |
US4955547A (en) * | 1987-09-02 | 1990-09-11 | Spectra Technologies, Inc. | Fluidic oscillating nozzle |
US4905909A (en) * | 1987-09-02 | 1990-03-06 | Spectra Technologies, Inc. | Fluidic oscillating nozzle |
JPH02231697A (ja) * | 1989-03-04 | 1990-09-13 | Dengen Autom Kk | 自動販売機の商品販売制御装置 |
US5165438A (en) * | 1992-05-26 | 1992-11-24 | Facteau David M | Fluidic oscillator |
US5412950A (en) * | 1993-07-27 | 1995-05-09 | Hu; Zhimin | Energy recovery system |
US5524660A (en) * | 1995-06-28 | 1996-06-11 | Basf Corporation | Plate-type spray nozzle and method of use |
US6680021B1 (en) | 1996-07-16 | 2004-01-20 | Illinois Toolworks Inc. | Meltblowing method and system |
US5902540A (en) | 1996-10-08 | 1999-05-11 | Illinois Tool Works Inc. | Meltblowing method and apparatus |
US5904298A (en) * | 1996-10-08 | 1999-05-18 | Illinois Tool Works Inc. | Meltblowing method and system |
US6029746A (en) * | 1997-07-22 | 2000-02-29 | Vortech, Inc. | Self-excited jet stimulation tool for cleaning and stimulating wells |
US6470980B1 (en) | 1997-07-22 | 2002-10-29 | Rex A. Dodd | Self-excited drill bit sub |
US5882573A (en) * | 1997-09-29 | 1999-03-16 | Illinois Tool Works Inc. | Adhesive dispensing nozzles for producing partial spray patterns and method therefor |
US5893383A (en) * | 1997-11-25 | 1999-04-13 | Perfclean International | Fluidic Oscillator |
US6051180A (en) | 1998-08-13 | 2000-04-18 | Illinois Tool Works Inc. | Extruding nozzle for producing non-wovens and method therefor |
US6200635B1 (en) | 1998-08-31 | 2001-03-13 | Illinois Tool Works Inc. | Omega spray pattern and method therefor |
US6581856B1 (en) * | 1998-11-06 | 2003-06-24 | Bowles Fluidics Corporation | Fluid mixer |
US6089026A (en) * | 1999-03-26 | 2000-07-18 | Hu; Zhimin | Gaseous wave refrigeration device with flow regulator |
US6602554B1 (en) | 2000-01-14 | 2003-08-05 | Illinois Tool Works Inc. | Liquid atomization method and system |
US6729564B2 (en) | 2000-07-21 | 2004-05-04 | Bowles Fluidics Corporation | Fluidic SPA Nozzles with dual operating modes and methods |
US6948244B1 (en) * | 2001-03-06 | 2005-09-27 | Bowles Fluidics Corporation | Method of molding fluidic oscillator devices |
US7111800B2 (en) * | 2002-11-12 | 2006-09-26 | Bowles Fluidics Corporation | Fluid spray apparatus |
JP4178064B2 (ja) * | 2003-03-19 | 2008-11-12 | 株式会社日立産機システム | 純流体素子 |
US7134609B1 (en) * | 2003-05-15 | 2006-11-14 | Bowles Fluidics Corporation | Fluidic oscillator and method |
US20070295840A1 (en) * | 2003-09-29 | 2007-12-27 | Bowles Fluidics Corporation | Fluidic oscillators and enclosures with split throats |
US7677480B2 (en) * | 2003-09-29 | 2010-03-16 | Bowles Fluidics Corporation | Enclosures for fluidic oscillators |
US7651036B2 (en) * | 2003-10-28 | 2010-01-26 | Bowles Fluidics Corporation | Three jet island fluidic oscillator |
US7354008B2 (en) * | 2004-09-24 | 2008-04-08 | Bowles Fluidics Corporation | Fluidic nozzle for trigger spray applications |
CN101094723B (zh) | 2004-11-01 | 2013-02-06 | 鲍尔斯应用流体力学公司 | 冷态性能改进了的流体振荡器 |
US7267290B2 (en) * | 2004-11-01 | 2007-09-11 | Bowles Fluidics Corporation | Cold-performance fluidic oscillator |
US8662421B2 (en) * | 2005-04-07 | 2014-03-04 | Bowles Fluidics Corporation | Adjustable fluidic sprayer |
US7478764B2 (en) | 2005-09-20 | 2009-01-20 | Bowles Fluidics Corporation | Fluidic oscillator for thick/three-dimensional spray applications |
US8205812B2 (en) | 2005-10-06 | 2012-06-26 | Bowles Fluidics Corporation | Enclosures for multiple fluidic oscillators |
US8172162B2 (en) * | 2005-10-06 | 2012-05-08 | Bowles Fluidics Corp. | High efficiency, multiple throat fluidic oscillator |
US20070163573A1 (en) * | 2006-01-18 | 2007-07-19 | Act Seed Technology Fund Llc | Wound cleaning and decontamination device and method of use thereof |
WO2007149436A1 (fr) | 2006-06-16 | 2007-12-27 | Bowles Fluidics Corporation | Dispositif fluidique de pulvérisation à motifs tridimensionnels |
US7798434B2 (en) * | 2006-12-13 | 2010-09-21 | Nordson Corporation | Multi-plate nozzle and method for dispensing random pattern of adhesive filaments |
JP5059393B2 (ja) * | 2006-12-13 | 2012-10-24 | 株式会社日立産機システム | エアシャワー装置 |
US8616615B2 (en) | 2007-05-02 | 2013-12-31 | Ramot At Tel-Aviv University Ltd. | Methods and apparatus for reduction of aerodynamic drag |
GB0717104D0 (en) | 2007-09-04 | 2007-10-10 | Reckitt Benckiser Inc | Liquid spray dispenser |
EP2222408B1 (fr) | 2007-12-07 | 2018-02-14 | dlhBowles Inc. | Ensemble buse d'irrigation |
US8074902B2 (en) | 2008-04-14 | 2011-12-13 | Nordson Corporation | Nozzle and method for dispensing random pattern of adhesive filaments |
CN102369064A (zh) | 2009-03-25 | 2012-03-07 | I·克图特·特瑞·百于娜 | 易更换的用于喷泉动态的图形发生器 |
DE102009059038A1 (de) * | 2009-12-11 | 2011-06-16 | Lechler Gmbh | Tankreinigungsdüse |
JP5793699B2 (ja) * | 2010-07-16 | 2015-10-14 | パナソニックIpマネジメント株式会社 | 洗浄機構 |
US9212522B2 (en) | 2011-05-18 | 2015-12-15 | Thru Tubing Solutions, Inc. | Vortex controlled variable flow resistance device and related tools and methods |
US8424605B1 (en) | 2011-05-18 | 2013-04-23 | Thru Tubing Solutions, Inc. | Methods and devices for casing and cementing well bores |
US8453745B2 (en) | 2011-05-18 | 2013-06-04 | Thru Tubing Solutions, Inc. | Vortex controlled variable flow resistance device and related tools and methods |
CZ303758B6 (cs) * | 2011-08-05 | 2013-04-24 | Ústav termomechaniky AV CR, v.v.i. | Fluidický oscilátor s bistabilním zesilovacem proudového typu |
WO2013061276A1 (fr) | 2011-10-27 | 2013-05-02 | Ramot At Tel-Aviv University Ltd. | Synchronisation d'actionneurs fluidiques |
US9612044B2 (en) | 2012-09-13 | 2017-04-04 | Raytheon Company | Cryocooler having variable-length inertance channel for tuning resonance of pulse tube |
US9120563B2 (en) * | 2012-10-16 | 2015-09-01 | The Boeing Company | Flow control actuator with an adjustable frequency |
US10092913B2 (en) * | 2012-12-12 | 2018-10-09 | Dlhbowles, Inc. | Fluidic nozzle and improved moving vortex generating fluidic oscillator |
DE102013224040B4 (de) | 2013-11-25 | 2019-11-14 | A. Raymond Et Cie | Vorrichtung zum Erzeugen eines oszillierenden Flüssigkeitsstrahls |
USD735428S1 (en) | 2014-02-17 | 2015-07-28 | The Toro Company | Nozzle for a debris blower |
US9420924B2 (en) | 2014-02-17 | 2016-08-23 | The Toro Company | Oscillating airstream nozzle for debris blower |
JP6545784B2 (ja) | 2014-07-15 | 2019-07-17 | ディエルエイチ・ボウルズ・インコーポレイテッドdlhBOWLES Inc. | 改良された3噴流アイランド流体オシレータ回路、方法およびノズル組立体 |
WO2016015991A1 (fr) * | 2014-07-29 | 2016-02-04 | Voith Patent Gmbh | Procédé et dispositif destiné au dosage et à l'incorporation d'au moins un milieu fluide dans un flux de traitement |
CN106660059B (zh) | 2014-08-15 | 2020-03-13 | Dlh鲍尔斯公司 | 紧凑型分瓣式剪切清洗器喷嘴 |
WO2016060736A1 (fr) | 2014-10-15 | 2016-04-21 | Illinois Tool Works Inc. | Plaquette fluidique pour gicleurs |
US9943863B2 (en) | 2015-04-29 | 2018-04-17 | Delta Faucet Company | Showerhead with scanner nozzles |
US9316065B1 (en) | 2015-08-11 | 2016-04-19 | Thru Tubing Solutions, Inc. | Vortex controlled variable flow resistance device and related tools and methods |
JP6681016B2 (ja) * | 2015-09-30 | 2020-04-15 | Toto株式会社 | 吐水装置 |
WO2017059542A1 (fr) * | 2015-10-09 | 2017-04-13 | University Of Saskatchewan | Convertisseur à commutation d'inertance |
CN105435976B (zh) * | 2015-11-18 | 2018-07-20 | 北京航空航天大学 | 一种自激振荡气体射流辅助雾化装置 |
WO2019084539A1 (fr) | 2017-10-27 | 2019-05-02 | Dlhbowles, Inc. | Ensemble buse à dispositif de balayage à espacement et procédé |
DE112017002334T5 (de) | 2016-05-03 | 2019-02-14 | dlhBowles Inc. | Fluidische Abtastdüse und Sprühdüse, die dieselbe anwendet |
DE102017212747B3 (de) * | 2017-07-25 | 2018-11-08 | Fdx Fluid Dynamix Gmbh | Fluidisches Bauteil, fluidische Baugruppe und Fluidverteilungsgerät |
US10781654B1 (en) | 2018-08-07 | 2020-09-22 | Thru Tubing Solutions, Inc. | Methods and devices for casing and cementing wellbores |
US11739517B2 (en) | 2019-05-17 | 2023-08-29 | Kohler Co. | Fluidics devices for plumbing fixtures |
US10753154B1 (en) | 2019-10-17 | 2020-08-25 | Tempress Technologies, Inc. | Extended reach fluidic oscillator |
CN114585445B (zh) | 2019-10-18 | 2024-03-22 | Dlh鲍尔斯公司 | 用于增强冷性能的喷嘴组件的流体振荡器 |
US20230323903A1 (en) * | 2020-08-14 | 2023-10-12 | Board Of Regents, The University Of Texas System | Tunable, Pulsatile, and 3-Dimensional Fluidic Oscillator |
CN113863861A (zh) * | 2021-10-22 | 2021-12-31 | 中南大学 | 一种单反馈通道涡流腔式压力脉冲发生装置 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3192938A (en) * | 1961-09-05 | 1965-07-06 | Sperry Rand Corp | Fluid multi-stable device |
US3182676A (en) * | 1962-04-23 | 1965-05-11 | Sperry Rand Corp | Binary counter |
US3193197A (en) * | 1962-04-23 | 1965-07-06 | Sperry Rand Corp | Binary counter stages having two fluid vortex amplifiers |
US3216439A (en) * | 1962-12-18 | 1965-11-09 | Bowles Eng Corp | External vortex transformer |
US3266508A (en) * | 1963-04-22 | 1966-08-16 | Sperry Rand Corp | Free-running oscillator |
US3266509A (en) * | 1963-08-26 | 1966-08-16 | Sperry Rand Corp | Fluid pulse former |
US3238960A (en) * | 1963-10-10 | 1966-03-08 | Foxboro Co | Fluid frequency system |
US3247861A (en) * | 1963-11-20 | 1966-04-26 | Sperry Rand Corp | Fluid device |
US3294103A (en) * | 1964-01-09 | 1966-12-27 | Bowles Eng Corp | Flow splitter for reducing dominant edge tone frequencies in fluid systems |
US3423026A (en) * | 1967-10-30 | 1969-01-21 | Gen Motors Corp | Windshield cleaning device utilizing an oscillatory fluid stream |
US3715949A (en) * | 1971-02-18 | 1973-02-13 | Nippon Musical Instruments Mfg | Musical instrument using a fluid powered tone generator for generating sonic energy |
US3926373A (en) * | 1974-07-26 | 1975-12-16 | Us Air Force | Thrust augmentation system with oscillating jet nozzles |
US4052002A (en) * | 1974-09-30 | 1977-10-04 | Bowles Fluidics Corporation | Controlled fluid dispersal techniques |
US4184636A (en) * | 1977-12-09 | 1980-01-22 | Peter Bauer | Fluidic oscillator and spray-forming output chamber |
-
1979
- 1979-03-09 US US06/019,250 patent/US4231519A/en not_active Expired - Lifetime
-
1980
- 1980-03-04 FR FR8004818A patent/FR2454550A1/fr not_active Withdrawn
- 1980-03-06 CA CA000347136A patent/CA1151073A/fr not_active Expired
- 1980-03-07 EP EP85100695A patent/EP0319594B1/fr not_active Expired - Lifetime
- 1980-03-07 BE BE0/199713A patent/BE882128A/fr not_active IP Right Cessation
- 1980-03-07 JP JP55501680A patent/JPS6146681B2/ja not_active Expired
- 1980-03-07 DE DE803036776A patent/DE3036776A1/de active Pending
- 1980-03-07 DE DE8080900579T patent/DE3070544D1/de not_active Expired
- 1980-03-07 AT AT80900579T patent/ATE12898T1/de not_active IP Right Cessation
- 1980-03-07 WO PCT/US1980/000231 patent/WO1980001884A1/fr active IP Right Grant
- 1980-03-08 ES ES489364A patent/ES8100709A1/es not_active Expired
- 1980-03-10 IT IT20470/80A patent/IT1194617B/it active
- 1980-03-11 DE DE803036766T patent/DE3036766A1/de not_active Withdrawn
- 1980-09-24 EP EP80900579A patent/EP0025053B1/fr not_active Expired
- 1980-11-05 DK DK469980A patent/DK469980A/da not_active Application Discontinuation
-
1983
- 1983-05-16 CA CA000428281A patent/CA1184124A/fr not_active Expired
- 1983-06-10 US US06/503,119 patent/USRE33159E/en not_active Expired - Lifetime
- 1983-06-17 BE BE0/211024A patent/BE897078R/fr not_active IP Right Cessation
-
1985
- 1985-03-19 US US06/713,716 patent/USRE33158E/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ES489364A0 (es) | 1980-11-01 |
USRE33158E (en) | 1990-02-06 |
DE3036766A1 (de) | 1982-02-11 |
BE882128A (fr) | 1980-07-01 |
ES8100709A1 (es) | 1980-11-01 |
IT8020470A0 (it) | 1980-03-10 |
DE3070544D1 (en) | 1985-05-30 |
EP0319594A1 (fr) | 1989-06-14 |
US4231519A (en) | 1980-11-04 |
DE3036776A1 (en) | 1981-05-07 |
EP0025053A1 (fr) | 1981-03-18 |
BE897078R (fr) | 1983-10-17 |
EP0025053B1 (fr) | 1985-04-24 |
IT1194617B (it) | 1988-09-22 |
EP0319594B1 (fr) | 1992-06-03 |
ATE12898T1 (de) | 1985-05-15 |
DK469980A (da) | 1980-11-05 |
EP0025053A4 (fr) | 1981-08-27 |
CA1184124A (fr) | 1985-03-19 |
JPS6146681B2 (fr) | 1986-10-15 |
JPS56500081A (fr) | 1981-01-29 |
USRE33159E (en) | 1990-02-06 |
CA1151073A (fr) | 1983-08-02 |
WO1980001884A1 (fr) | 1980-09-18 |
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