DE102005060530A1 - Ventilation of a switching element - Google Patents
Ventilation of a switching element Download PDFInfo
- Publication number
- DE102005060530A1 DE102005060530A1 DE102005060530A DE102005060530A DE102005060530A1 DE 102005060530 A1 DE102005060530 A1 DE 102005060530A1 DE 102005060530 A DE102005060530 A DE 102005060530A DE 102005060530 A DE102005060530 A DE 102005060530A DE 102005060530 A1 DE102005060530 A1 DE 102005060530A1
- Authority
- DE
- Germany
- Prior art keywords
- switching
- ventilation
- counter
- switching speed
- piston
- 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- Withdrawn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
- 238000009423 ventilation Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000013016 damping Methods 0.000 claims abstract description 11
- 230000001419 dependent effect Effects 0.000 claims description 5
- 239000012530 fluid Substances 0.000 description 3
- 238000013022 venting Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
- F15B11/046—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed depending on the position of the working member
- F15B11/048—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed depending on the position of the working member with deceleration control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
- F15B11/0406—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed during starting or stopping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/06—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
- F15B2211/7053—Double-acting output members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/755—Control of acceleration or deceleration of the output member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/85—Control during special operating conditions
- F15B2211/853—Control during special operating conditions during stopping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/885—Control specific to the type of fluid, e.g. specific to magnetorheological fluid
- F15B2211/8855—Compressible fluids, e.g. specific to pneumatics
Abstract
Im Rahmen des Verfahrens zur Reduzierung der mechanischen Belastung und zur Erhöhung der Schaltgeschwindigkeit bei der Betätigung eines Schaltkolbens, insbesondere des Schaltkolbens eines Schaltelementes, wird die dem Stelldruck abgewandte Seite (Gegenseite) des Schaltkolbens (1) mittels eines Gegenbelüftungspulses definiert belüftet, derart, dass sich der im Schaltzylinder (2) maximal mögliche Belüftungsdruck nicht aufbauen kann, wobei Dauer und Amplitude des Gegenbelüftungspulses derart definiert sind, dass eine schnellere Kolbenbewegung bei einer gleichzeitig erzielbaren ausreichenden Endlagendämpfung realisierbar ist.As part of the method for reducing the mechanical load and increasing the switching speed when a switching piston, in particular the switching piston of a switching element, is actuated, the side of the switching piston (1) facing away from the actuating pressure (opposite side) is ventilated in a defined manner by means of a counter-ventilation pulse, such that the maximum possible ventilation pressure cannot build up in the switching cylinder (2), the duration and amplitude of the counter-ventilation pulse being defined in such a way that a faster piston movement can be achieved with sufficient end position damping that can be achieved at the same time.
Description
Die vorliegende Erfindung betrifft ein Verfahren zur Reduzierung der mechanischen Belastung und zur Erhöhung der Schaltgeschwindigkeit bei der Betätigung eines Schaltkolbens, insbesondere des Schaltkolbens eines Schaltelementes, gemäß dem Oberbegriff des Patentanspruchs 1.The The present invention relates to a method for reducing the mechanical load and to increase the switching speed during operation a switching piston, in particular the switching piston of a switching element, according to the generic term of claim 1
Nach dem Stand der Technik werden die Schaltelemente bis zur Betätigung zunächst auf der Gegenseite belüftet. Sobald die Druckbeaufschlagung für die gewünschte Bewegung erfolgt, wird die Gegenseite entlüftet; hierbei wird durch das Luftpolster und den durch die Bewegung entstehenden Staudruck der Endanschlag gedämpft und die mechanische Belastung reduziert. Zur Realisierung dieses Konzeptes sind aus dem Stand der Technik unterschiedliche Einrichtungen bekannt.To In the prior art, the switching elements until the operation on first the opposite side vented. Once the pressurization for the desired Movement takes place, the opposite side is vented; this is by the Air cushion and the resulting dynamic pressure of the movement End stop muffled and reduces the mechanical load. To realize this concept are known from the prior art, different devices.
Die
Hierbei ist in den Vorsteuerkanal ein zur Vorgabe des Betätigungsdruckes dienender Druckregler eingeschaltet und dem Ventilglied eine der Beaufschlagungsfläche axial entgegengesetzt gerichtete Gegenbeaufschlagungsfläche zugeordnet, die über einen Gegendruckkanal mit dem im Arbeitskanal herrschenden Arbeitsdruck beaufschlagt ist.in this connection is in the pilot channel on to specify the operating pressure serving pressure regulator and the valve member one of the actuating area assigned to axially oppositely directed counterbearing surface, the one about Counterpressure channel with the working pressure prevailing in the working channel is charged.
Die
Durch die aus dem Stand der Technik bekannten Lösungen wird in nachteiliger Weise durch das Ausströmen der Luft auf der Gegenseite eine Verkürzung der Schaltzeit limitiert.By the known from the prior art solutions is disadvantageous Way through the outflow the air on the opposite side limits a shortening of the switching time.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Reduzierung der mechanischen Belastung und zur Erhöhung der Schaltgeschwindigkeit bei der Betätigung eines Schaltkolbens, insbesondere des Schaltkolbens eines Schaltelementes anzugeben, durch dessen Durchführung eine schnelle Kolbenbewegung bei ausreichender Endlagendämpfung erzielbar ist.Of the The present invention is based on the object, a method to reduce the mechanical load and increase the Switching speed when operating a control piston, Specify in particular the switching piston of a switching element, by carrying it out fast piston movement achieved with sufficient cushioning is.
Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst. Weitere erfindungsgemäße Ausgestaltungen und Vorteile gehen aus den Unteransprüchen hervor.These The object is solved by the features of claim 1. Further Embodiments of the invention and advantages are apparent from the dependent claims.
Demnach wird ein Verfahren zur Reduzierung der mechanischen Belastung und zur Erhöhung der Schaltgeschwindigkeit bei der Betätigung eines Schaltkolbens, insbesondere des Schaltkolbens eines Schaltelementes vorge schlagen, im Rahmen dessen die dem Stelldruck abgewandte Seite (Gegenseite) des Schaltkolbens mittels eines Gegenbelüftungspulses definiert belüftet wird, derart, dass sich der im Schaltzylinder maximal mögliche Belüftungsdruck nicht aufbauen kann.Therefore is a method of reducing mechanical stress and to increase the Switching speed when operating a control piston, especially the switching piston of a switching element pre-strike, as part of this the side facing away from the signal pressure (opposite side) the switching piston is ventilated defined by means of a counter-ventilation pulse, such that the maximum possible ventilation pressure in the shift cylinder can not build.
Gemäß der Erfindung ist die Dauer und Amplitude des Gegenbelüftungspulses derart definiert, dass eine schnellere Kolbenbewegung bei einer gleichzeitig erzielbaren ausreichenden Endlagendämpfung realisierbar ist.According to the invention the duration and amplitude of the counter-ventilation pulse is defined such that a faster piston movement with a simultaneously achievable sufficient cushioning is feasible.
Hierbei kann der Gegenbelüftungspuls kurz vor der Betätigung des Schaltkolbens, d.h. kurz vor der Bestromung des Ventils der Zielposition erzeugt werden und bei Bestromung des Ventils der Zielposition abgeschaltet werden oder für eine bestimmte Zeit überschneidend erhalten bleiben. Das Zeitintervall zwischen dem Beginn der Gegenbelüftung und dem Beginn der Bestromung des Ventils der Zielposition kann gemäß der Erfindung in Abhängigkeit von der gewünschten Dämpfung und Schaltgeschwindigkeit eingestellt werden.in this connection can the counter ventilation pulse just before the operation of the switching piston, i. shortly before the current supply to the valve Target position can be generated and when energizing the valve of the target position be turned off or for overlapping a certain time remain. The time interval between the beginning of the counter ventilation and the Beginning of the energization of the valve of the target position can according to the invention dependent on from the desired damping and switching speed are set.
Im Rahmen einer Variante des erfindungsgemäßen Verfahrens wird vorgeschlagen, die Gegenseite erst nach Beginn der Druckbeaufschlagung des Schaltkolbens bzw. der Bestromung des Ventils der Zielposition mittels eines Gegenbelüftungspulses zu belüften, um eine definierte Dämpfung einzustellen.in the As part of a variant of the method according to the invention, it is proposed the opposite side only after the beginning of the pressurization of the control piston or the energization of the valve of the target position by means of a counter-ventilation pulse to ventilate, around a defined damping adjust.
Erfindungsgemäß hängen Zeitpunkt, Dauer und/oder Amplitude des Gegenbelüftungspulses von der Zylinderbauart (Differenzialzylinder, Gleichgangzylinder, 2-Stellungszylinder, 3-Stellungszylinder) ab; für den Fall eines Differenzialzylinders sind Zeitpunkt, Dauer und/oder Amplitude zudem von der Bewegungsrichtung und für den Fall eines 3-Stellungszylinders von der Anfangs- und Zielposition abhängig.According to the time, duration and / or amplitude of the counter-ventilation pulse of the cylinder type (differential cylinder, Gleichgang cylinder, 2-position cylinder, 3-position cylinder) from; in the case of a differential cylinder, timing, duration and / or amplitude are also dependent on the direction of movement and, in the case of a 3-position cylinder, on the starting and ending positions.
Art und der Dauer der Gegenbelüftungspulse können zudem in vorteilhafter Weise von einer angeforderten Schaltgeschwindigkeit (z.B. Powerschaltung, Schonschaltung etc.) abhängen.kind and the duration of the counter-ventilation pulses may also advantageously of a requested switching speed (e.g., power switch, switch-off, etc.).
Das Ein- und/oder Ausschalten des Gegenbelüftungspulses kann ereignis- und/oder zeitgesteuert ausgeführt sein.The Switching on and / or off the counter-ventilation pulse can occur and / or timed executed be.
Durch die erfindungsgemäße Konzeption werden die Schaltzeiten verkürzt, wobei eine ausreichende, variable Endlagendämpfung realisiert wird. Ein weiterer Vorteil besteht darin, dass die für die Gegenbelüftung erforderlichen Ventile kleiner dimensioniert werden können, wodurch der Stromverbrauch reduziert wird.By the conception according to the invention shortens the switching times, wherein a sufficient, variable end position damping is realized. One Another advantage is that required for the counter ventilation Valves can be made smaller, reducing power consumption becomes.
Die Erfindung wird im Folgenden anhand der beigefügten Figuren beispielhaft näher erläutert. Es zeigen:The The invention will be explained in more detail below by way of example with reference to the attached figures. Show it:
In
Hierbei ist die Dauer und Amplitude des Gegenbelüftungspulses derart definiert, dass sich der maximal mögliche Belüftungsdruck, welcher die Kolbengeschwindigkeit begrenzt, nicht aufbauen kann. Insbesondere kann durch die Dauer und Amplitude des Gegenbelüftungspulses die Schaltgeschwindigkeit (z.B. Powerschaltung, Schonschaltung etc.) und die Endlagendämpfung eingestellt werden. Des weiteren sind Zeitpunkt, Dauer und/oder Amplitude des Gegenbelüftungspulses von der Zylinderbauart abhängig.in this connection the duration and amplitude of the counter-ventilation pulse is defined in such a way that is the maximum possible Ventilation pressure which limits the piston speed, can not build up. Especially can by the duration and amplitude of the counter-ventilation pulse, the switching speed (e.g., power switch, switch-off, etc.) and end-of-travel damping are set become. Furthermore, the time, duration and / or amplitude of the counter-ventilation pulse depends on the cylinder type.
Zwei
mögliche
Beispiele des Verlaufs des Gegenbelüftungspulses sind Gegenstand
der
Bei
dem in
In
- 11
- Schaltkolbenswitching piston
- 22
- Schaltzylinderswitching cylinder
- 33
- Druckleitungpressure line
- 3'3 '
- Druckleitungpressure line
- 44
- Entlüftungsanschlussexhaust port
- 4'4 '
- Entlüftungsanschlussexhaust port
Claims (7)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005060530A DE102005060530A1 (en) | 2005-12-17 | 2005-12-17 | Ventilation of a switching element |
PCT/EP2006/011883 WO2007068416A1 (en) | 2005-12-17 | 2006-12-09 | Ventilation of an operating element |
EP06829475A EP1960675A1 (en) | 2005-12-17 | 2006-12-09 | Ventilation of an operating element |
US12/097,858 US20090004027A1 (en) | 2005-12-17 | 2006-12-09 | Ventilation of an Operating Element |
CNA2006800356861A CN101273205A (en) | 2005-12-17 | 2006-12-09 | Ventilation of an operating element |
JP2008544839A JP2009520164A (en) | 2005-12-17 | 2006-12-09 | Shift element ventilation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005060530A DE102005060530A1 (en) | 2005-12-17 | 2005-12-17 | Ventilation of a switching element |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102005060530A1 true DE102005060530A1 (en) | 2007-06-21 |
Family
ID=37831620
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102005060530A Withdrawn DE102005060530A1 (en) | 2005-12-17 | 2005-12-17 | Ventilation of a switching element |
Country Status (6)
Country | Link |
---|---|
US (1) | US20090004027A1 (en) |
EP (1) | EP1960675A1 (en) |
JP (1) | JP2009520164A (en) |
CN (1) | CN101273205A (en) |
DE (1) | DE102005060530A1 (en) |
WO (1) | WO2007068416A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008024338A1 (en) | 2008-05-20 | 2009-11-26 | Festo Ag & Co. Kg | Electro-pneumatic drive system, has electrically actuatable control valve devices designed different such that switching time of one of valve devices is longer than switching time of another one of valve devices |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE533131C2 (en) * | 2008-11-18 | 2010-07-06 | Scania Cv Abp | Pneumatic actuator, system and method for controlling the same |
US9346075B2 (en) | 2011-08-26 | 2016-05-24 | Nordson Corporation | Modular jetting devices |
US20130052359A1 (en) * | 2011-08-26 | 2013-02-28 | Nordson Corporation | Pneumatically-driven jetting valves with variable drive pin velocity, improved jetting systems and improved jetting methods |
US8708246B2 (en) | 2011-10-28 | 2014-04-29 | Nordson Corporation | Positive displacement dispenser and method for dispensing discrete amounts of liquid |
EP3559509A4 (en) | 2016-12-22 | 2020-08-12 | Eaton Cummins Automated Transmission Technologies, LLC | High efficiency, high output transmission |
US11105412B2 (en) | 2016-12-22 | 2021-08-31 | Eaton Cummins Automated Transmission Technologies Llc | System, method, and apparatus for managing transmission shutdown operations |
US11391352B2 (en) | 2016-12-22 | 2022-07-19 | Eaton Cummins Automated Transmission Technologies, Llc | High efficiency, high output transmission |
DE102017208029A1 (en) * | 2017-05-12 | 2018-11-15 | Robert Bosch Gmbh | Variable adjustable shock absorber for a hoist and hoist |
EP4074881A1 (en) | 2021-04-15 | 2022-10-19 | Electrolux Appliances Aktiebolag | Laundry treatment appliance with water softening system |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19702948C2 (en) * | 1997-01-28 | 2000-01-27 | Festo Ag & Co | Valve arrangement |
EP1204009A2 (en) * | 1997-08-18 | 2002-05-08 | Walter Sticht | Method for operating a motion unit |
DE20211915U1 (en) * | 2002-08-02 | 2002-10-10 | Rotech Antriebselemente Gmbh | Actuator for a valve |
DE10156099B4 (en) * | 2001-11-16 | 2004-01-29 | Andreas Reimer | Control device for pressure actuated pneumatic actuators of fittings |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4763560A (en) * | 1984-05-25 | 1988-08-16 | Tokyo Precision Instruments Co., Ltd. | Method and apparatus of controlling and positioning fluid actuator |
US4628499A (en) * | 1984-06-01 | 1986-12-09 | Scientific-Atlanta, Inc. | Linear servoactuator with integrated transformer position sensor |
DE4339444A1 (en) * | 1993-11-19 | 1995-05-24 | Hygrama Ag | Method for controlling the movement of a pressure medium cylinder and pressure medium cylinder |
DE4410103C1 (en) * | 1994-03-21 | 1995-08-31 | Mannesmann Ag | Drive of the fluidic or electrical type with a control |
WO1997013073A1 (en) * | 1995-10-02 | 1997-04-10 | Pos-Line Ab | Method and valve apparatus for controlling a reciprocatable fuid actated power machine |
-
2005
- 2005-12-17 DE DE102005060530A patent/DE102005060530A1/en not_active Withdrawn
-
2006
- 2006-12-09 US US12/097,858 patent/US20090004027A1/en not_active Abandoned
- 2006-12-09 EP EP06829475A patent/EP1960675A1/en not_active Ceased
- 2006-12-09 JP JP2008544839A patent/JP2009520164A/en not_active Withdrawn
- 2006-12-09 CN CNA2006800356861A patent/CN101273205A/en active Pending
- 2006-12-09 WO PCT/EP2006/011883 patent/WO2007068416A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19702948C2 (en) * | 1997-01-28 | 2000-01-27 | Festo Ag & Co | Valve arrangement |
EP1204009A2 (en) * | 1997-08-18 | 2002-05-08 | Walter Sticht | Method for operating a motion unit |
DE10156099B4 (en) * | 2001-11-16 | 2004-01-29 | Andreas Reimer | Control device for pressure actuated pneumatic actuators of fittings |
DE20211915U1 (en) * | 2002-08-02 | 2002-10-10 | Rotech Antriebselemente Gmbh | Actuator for a valve |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008024338A1 (en) | 2008-05-20 | 2009-11-26 | Festo Ag & Co. Kg | Electro-pneumatic drive system, has electrically actuatable control valve devices designed different such that switching time of one of valve devices is longer than switching time of another one of valve devices |
DE102008024338B4 (en) * | 2008-05-20 | 2010-04-15 | Festo Ag & Co. Kg | Electro-pneumatic drive system and method for its operation |
Also Published As
Publication number | Publication date |
---|---|
EP1960675A1 (en) | 2008-08-27 |
CN101273205A (en) | 2008-09-24 |
JP2009520164A (en) | 2009-05-21 |
US20090004027A1 (en) | 2009-01-01 |
WO2007068416A1 (en) | 2007-06-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20110701 |