CN102971532A - Hydraulic assembly - Google Patents
Hydraulic assembly Download PDFInfo
- Publication number
- CN102971532A CN102971532A CN2011800343862A CN201180034386A CN102971532A CN 102971532 A CN102971532 A CN 102971532A CN 2011800343862 A CN2011800343862 A CN 2011800343862A CN 201180034386 A CN201180034386 A CN 201180034386A CN 102971532 A CN102971532 A CN 102971532A
- Authority
- CN
- China
- Prior art keywords
- hydraulic pressure
- pressure unit
- electric motor
- pressure
- oscillation
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/002—Hydraulic systems to change the pump delivery
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/20—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by changing the driving speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2201/00—Pump parameters
- F04B2201/12—Parameters of driving or driven means
- F04B2201/1201—Rotational speed of the axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2201/00—Pump parameters
- F04B2201/12—Parameters of driving or driven means
- F04B2201/1204—Position of a rotating inclined plate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2201/00—Pump parameters
- F04B2201/12—Parameters of driving or driven means
- F04B2201/1204—Position of a rotating inclined plate
- F04B2201/12041—Angular position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2201/00—Pump parameters
- F04B2201/12—Parameters of driving or driven means
- F04B2201/1205—Position of a non-rotating inclined plate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2201/00—Pump parameters
- F04B2201/12—Parameters of driving or driven means
- F04B2201/1205—Position of a non-rotating inclined plate
- F04B2201/12051—Angular position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2203/00—Motor parameters
- F04B2203/02—Motor parameters of rotating electric motors
- F04B2203/0209—Rotational speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2205/00—Fluid parameters
- F04B2205/03—Pressure in the compression chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2205/00—Fluid parameters
- F04B2205/04—Pressure in the outlet chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2205/00—Fluid parameters
- F04B2205/05—Pressure after the pump outlet
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Hydraulic Motors (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention relates to a hydraulic assembly comprising a variable electric motor and a hydrostatic variable displacement pump which can be coupled thereto and the pivoting angle of which can be adjusted by means of a hydromechanical adjustment device, the pivoting angle being detectible by means of a pivoting angle sensor and a working pressure of the variable displacement pump being detectible by means of a pressure sensor. A speed of the electric motor can be varied depending on the pivoting angle sensor and the pressure sensor.
Description
The present invention relates to a kind of hydraulic pressure unit as described in the preamble according to claim 1 and a kind of method be used to moving a kind of hydraulic pressure unit.
In this hydraulic pressure unit that has by the oil hydraulic pump of electrical motor driven, known setting with metering pump.When moving under with the volume flow of less and relatively high pressure, although the power of hydraulic pressure unit is little, electric motor still bears high moment of torsion under less rotating speed.At this, during this operation at part load, because the ohmic loss on the electric motor, the hydraulic pressure unit has poor efficient.Shortcoming is in addition, and the cooling that produces by the motor fan that is associated with the rotating speed of electric motor may become too small in the case.
Document DE102007007005A1 has shown a kind of hydraulic pressure unit for supplying with to load in Fig. 3, wherein pump is by adjustable electrical motor driven.This pump is to regulate pump.At this, be provided with for the hydromechanical regulator of the angle of oscillation of this adjusting pump and be used for the regulator of motor rotary speed.
In pressurize operation (voltage regulation operation), under this runnability, must not having to keep certain pressure by hydraulic pressure unit or adjusting pump under the condition of considerable volume flow, regulate pump and back swing.In the case, the moment of torsion of hydraulic pressure unit or electric motor descends, and this causes the saving of energy.
The defective of this hydraulic pressure unit is, electric motor in operation at part load with almost constant rotating speed operation and still have in the case noticeable wasted power.
Therewith correspondingly, the purpose of this invention is to provide a kind of hydraulic pressure unit, its efficient is further improved during operation at part load.
This purpose realizes by a kind of hydraulic pressure unit of the feature with claim 1 with by a kind of method that is used for operation hydraulic pressure unit according to claim 7.
Have adjustable electric motor and the hydrostatic adjusting pump that can be coupled on it according to hydraulic pressure unit of the present invention, its angle of oscillation can be adjusted (setting) via hydromechanical (hydraulic machine) controlling device.In the case, angle of oscillation can be surveyed via pressure transducer by the working pressure of pivot angle sensor detection and adjusting pump.The rotating speed of electric motor can depend on pivot angle sensor and pressure transducer is regulated.The minimum that the wasted power of hydraulic press group is reduced.In addition, this solution is favourable for the equipment of reequiping because with the equipment control mechanism, can be used with Power supply with the interface of hydraulic mechanism with remaining unchanged.
Other favourable design proposal of the present invention is described in the dependent claims.
Particularly preferably, the rotating speed of electric motor can be regulated via frequency variator.Pump can be disconnected without problems conventional intercourse (maintenance, replacing instrument suspend) thus, and this causes further energy to be saved.
In a preferred expansion scheme, the control mechanism of the programmable storage that the higher level who is provided with at frequency variator arranges, it is connected with pivot angle sensor and is connected with pressure transducer.It can control frequency variator.
In a preferred expansion scheme, hydromechanical controlling device is the pressure-conveying throttle regulator (combined pressure and flow-compensated regulator) of pressure regulator or combination.
Electric motor is asynchronous motor preferably, especially the favourable standard asynchronous motor of cost.
Under preferred applicable cases, be disposed in a kind of lathe (toolroom machine) according to hydraulic pressure unit of the present invention, especially in its clamp device, or in a kind of press machine or in a kind of plastics machinery, especially in plastic transfer molding machine, perhaps in a kind of deceleration loading device of hydraulic storage.Under these applicable cases, usually need to be under the working pressure that keeps a kind of wriggling (Schleichfahrt) or even stop, correspondingly usually obtaining utilizing thereby save potentiality according to energy of the present invention.
Have step according to the method for controlling according to each described hydraulic pressure unit of aforementioned claim of the present invention:
-identification pressurize operation; With
-reduce the rotating speed of electric motor.
Thus can be in the pressurize loss function that minimizes the hydraulic pressure unit in service.
By pressure transducer and pivot angle sensor, can on device technique, realize simply the identification to the pressurize operation.
Preferably, by reaching predetermined working pressure and being lower than the identification that predetermined angle of oscillation is implemented the pressurize operation by dropping to.
In a preferred expansion scheme according to method of the present invention, before identification pressurize operation, implement angle of oscillation is set up zero.Under zero stroke runnability, can carry out the explanation (prediction) of quantitative and qualitative analysis to the wearing and tearing in the hydraulic pressure unit and leakage.
Below by means of accompanying drawing various embodiments of the present invention have a rest to be described.In the accompanying drawing:
Fig. 1 has shown the hydraulic circuit diagram according to the first embodiment of hydraulic pressure unit of the present invention; With
Fig. 2 has shown the hydraulic circuit diagram according to the second embodiment of hydraulic pressure unit of the present invention.
Fig. 1 has shown the hydraulic circuit diagram according to the first embodiment of hydraulic pressure unit of the present invention (hydraulic pressure assembly).It has the pump 1 of adjusting, and this adjusting pump is supplied with to (not illustrating) load via working line 7.In working line 7, arrange the adjustable metering orifice plate 8 that is used for control load.Move in the open hydraulic circulation loop according to hydraulic pressure unit of the present invention, wherein, regulate pump 1 via basin pipeline 22 swabbing pressure medium from basin T.
Regulating the angle of oscillation of pump 1 adjusts via pressure regulator 2.This pressure regulator is connected with working line 7 in metering orifice plate 8 upstreams via control wiring 10.Pressure transducer 5 also is arranged in metering orifice plate 8 upstreams, and this pressure transducer 5 is connected with frequency variator 6 via signal line 12.
Frequency variator 6 is connected with adjustable asynchronous motor 3 via electric wire 14.Asynchronous motor 3 is connected with adjusting pump 1 via axle 16, arranges clutch 18 in this axle.
Regulating pump 1 place layout pivot angle sensor 4, its output signal is delivered to frequency variator 6 via signal line 20.
Arrange pressure-limit valve 24 at the working line 7 of regulating between pump 1 and the metering orifice plate 8, one of them spring force in the closing direction effect is adjustable.Pressure-limit valve 24 unloads working line 7 in the situation of response to basin T.
Below explanation is according to the first embodiment's of the hydraulic pressure unit of the present invention of Fig. 1 function.
Depend on the setting of load and the metering orifice plate 8 of (not illustrating) load, form a working pressure in working line 7, this working pressure is announced to pressure regulator 2 via control wiring 10.Pressure regulator increases angle of oscillation in the working pressure situation that reduces, and reduces angle of oscillation in the working pressure situation that increases.Under angle of oscillation reduced situation, the transmission power of regulating pump 1 was reduced.Angle of oscillation is announced to frequency variator 6 via signal line 20 by pivot angle sensor 4, and working pressure is announced to frequency variator 6 via signal line 12 by pressure transducer 5.Frequency variator depends on these two signals to asynchronous motor 3 supply capabilities.
Fig. 2 has shown the hydraulic circuit diagram according to the second embodiment of hydraulic pressure unit of the present invention.Herein, only explain below and difference according to the first embodiment of Fig. 1.
At the control mechanism that connects a programmable storage on the frequency variator 106 of having simplified with respect to the first embodiment via signal line 126.This control mechanism 128 for frequency variator 106 be arrange as upper level and the control frequency variator.The signal line 12 that for this reason is connected with pressure transducer 5 is connected on the control mechanism 128 with the signal line 20 that is connected with pivot angle sensor 4.The corresponding control signal that is used for the power adjustments of asynchronous motor 3 is delivered to frequency variator 106 by control mechanism 128 via signal line 126.
According to the present invention, especially be interested in the following situation: if hydraulic load (for example in press machine) should maybe can not continue mobile and however still should maintain the working pressure that reaches in the working line 7, regulate so pump 1 and back swung by pressure regulator 2.If dropping to, the angle of oscillation of being determined by pivot angle sensor 4 in the case is lower than a threshold value, and the working pressures in working line 7 of being determined by pressure transducer 5 simultaneously are kept above a predetermined threshold value, and the electronic circuit of attaching troops to a unit with frequency variator 6 so identifies this pressurize operation.This pressurize operates under a kind of limit case of theory also can be for zero stroke moves, under this zero stroke runnability, regulate pump 1 by backswing to zero and there is not other pressure medium to be transported in the working line 7.In the case, the working pressure of previous generation in working line 7 is maintained and resists the load forces of load.
According to the present invention, this pressure keeps motion or zero stroke operation by sensor 4,5 identifications, especially also reduces subsequently the rotating speed of asynchronous motor 3 except moment of torsion.
Keep motion or the operating this power reduction of zero stroke by asynchronous motor 3 at pressure, saved energy according to hydraulic pressure unit of the present invention.
In the embodiment shown in these two, regulating pump can be axial piston pump or radial piston pump.
For example in the punch process situation, stamping tool has closing function, and it must be maintained in whole stamping process.This stamping process roughly continues the 50-80% of whole circulation (cycle) and requires little quantity delivered under the high pressure at the same time in the case.In the case, according to prior art, use control oil system and accumulator system with storage load pump (Speicherladepumpe).The sort memory load pump usually is designed to maximum work cycle (cycle).Therefore storage load pump (for example in situation of manufacturing change) for slower work cycle is oversize.Therefore this storage load pump is worked quite continually and is kept motion or zero stroke work in service at pressure.In this application example, use and be recompensed after 1 to 2 year according to hydraulic pressure unit of the present invention.
Disclose a kind of hydraulic pressure unit, the hydrostatic adjusting pump that it has adjustable electric motor and can be connected thereto is regulated the angle of oscillation of pump and can be adjusted by hydromechanical controlling device.In the case, the angle of oscillation of regulating pump can be surveyed via pressure transducer via the working pressure of pivot angle sensor detection and adjusting pump.The rotating speed of electric motor can depend on pivot angle sensor and pressure transducer is regulated.
The reference character table
1 regulates pump
2 pressure regulators
3 asynchronous motors
4 pivot angle sensors
5 pressure transducers
6; 106 frequency variators
7 working lines
8 metering orifice plates
10 control wirings
12 signal lines
14 electric line
16 axles
18 clutches
20 signal lines
22 basin pipelines
24 pressure-limit valves
126 signal lines
The control mechanism of 128 programmable storages
The T basin.
Claims (10)
1. hydraulic pressure unit, it comprises adjustable electric motor (3) and can be coupled to adjusting pump (1) on it, the angle of oscillation of regulator can be adjusted via hydromechanical controlling device (2), it is characterized in that, described angle of oscillation can be surveyed via pivot angle sensor (4), can survey via pressure transducer (5) with the working pressure of described adjusting pump (1), wherein, the rotating speed of described electric motor (3) can depend on pivot angle sensor (4) and pressure transducer (5) is regulated.
2. according to hydraulic pressure unit claimed in claim 1, wherein, the rotating speed of described electric motor (3) can be via frequency variator (6; 106) regulate.
3. according to hydraulic pressure unit claimed in claim 2, comprise the control mechanism (128) of the higher level's who is set to described frequency variator (106) programmable storage, it is connected 5 with pivot angle sensor (4) with pressure transducer) be connected.
4. according to hydraulic pressure unit claimed in claim 1, wherein, described hydromechanical controlling device is pressure regulator (2) or the pressure that makes up-conveying throttle regulator.
5. according to hydraulic pressure unit claimed in claim 1, wherein, electric motor is asynchronous motor (3).
6. according to hydraulic pressure unit claimed in claim 1, it is arranged in a kind of lathe or in a kind of press machine or in a kind of plastics machinery or a kind of deceleration loading device for hydraulic storage.
7. be used for control according to the method for each described hydraulic pressure unit of aforementioned claim, it is characterized in that step:
-identification pressurize operation; With
-reduce the rotating speed of electric motor (3).
8. in accordance with the method for claim 7, wherein, implement described step " identification pressurize operation " by pressure transducer (5) and pivot angle sensor (4).
9. in accordance with the method for claim 8, wherein, by reaching predetermined working pressure and being lower than predetermined angle of oscillation and implementing described step " identification pressurize operation " by dropping to.
10. in accordance with the method for claim 7, wherein, described step " identification pressurize operation " implement before with angle of oscillation set up be roughly above freezing.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201010027183 DE102010027183A1 (en) | 2010-07-14 | 2010-07-14 | hydraulic unit |
| DE102010027183.7 | 2010-07-14 | ||
| PCT/EP2011/003295 WO2012007114A2 (en) | 2010-07-14 | 2011-07-02 | Hydraulic assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102971532A true CN102971532A (en) | 2013-03-13 |
Family
ID=44628126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011800343862A Pending CN102971532A (en) | 2010-07-14 | 2011-07-02 | Hydraulic assembly |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2593679B1 (en) |
| CN (1) | CN102971532A (en) |
| DE (1) | DE102010027183A1 (en) |
| ES (1) | ES2573510T3 (en) |
| WO (1) | WO2012007114A2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012016780B4 (en) * | 2012-06-01 | 2021-07-22 | Robert Bosch Gmbh | Method of operating a fluid pump |
| DE102016011778A1 (en) * | 2016-08-11 | 2018-02-15 | M A E Maschinen- Und Apparatebau Götzen Gmbh | Hydraulic, in particular pressure accumulatorless, drive arrangement for and with a consumer, in particular for presses, and method for operating such a hydraulic drive assembly |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4823552A (en) * | 1987-04-29 | 1989-04-25 | Vickers, Incorporated | Failsafe electrohydraulic control system for variable displacement pump |
| US5486106A (en) * | 1993-10-18 | 1996-01-23 | Hehl; Karl | Hydraulic device for supplying a hydraulic driving unit |
| US5951258A (en) * | 1997-07-09 | 1999-09-14 | Caterpillar Inc. | Torque limiting control system for a hydraulic work machine |
| DE10110398A1 (en) * | 2001-03-03 | 2002-09-26 | Mannesmann Rexroth Ag | Method for regulating the pressure medium supply to a hydraulically operated actuator |
| DE102007007005A1 (en) * | 2007-02-08 | 2008-08-14 | Robert Bosch Gmbh | Electrohydraulic control arrangement |
| US20090304523A1 (en) * | 2005-06-03 | 2009-12-10 | Joachim Morsch | Regulator device and method for operating a regulator device |
| CN201461564U (en) * | 2008-04-17 | 2010-05-12 | 罗伯特.博世有限公司 | Electrical hydraulic control device |
-
2010
- 2010-07-14 DE DE201010027183 patent/DE102010027183A1/en not_active Withdrawn
-
2011
- 2011-07-02 ES ES11730221.6T patent/ES2573510T3/en active Active
- 2011-07-02 WO PCT/EP2011/003295 patent/WO2012007114A2/en active Application Filing
- 2011-07-02 EP EP11730221.6A patent/EP2593679B1/en active Active
- 2011-07-02 CN CN2011800343862A patent/CN102971532A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4823552A (en) * | 1987-04-29 | 1989-04-25 | Vickers, Incorporated | Failsafe electrohydraulic control system for variable displacement pump |
| US5486106A (en) * | 1993-10-18 | 1996-01-23 | Hehl; Karl | Hydraulic device for supplying a hydraulic driving unit |
| US5951258A (en) * | 1997-07-09 | 1999-09-14 | Caterpillar Inc. | Torque limiting control system for a hydraulic work machine |
| DE10110398A1 (en) * | 2001-03-03 | 2002-09-26 | Mannesmann Rexroth Ag | Method for regulating the pressure medium supply to a hydraulically operated actuator |
| US20090304523A1 (en) * | 2005-06-03 | 2009-12-10 | Joachim Morsch | Regulator device and method for operating a regulator device |
| DE102007007005A1 (en) * | 2007-02-08 | 2008-08-14 | Robert Bosch Gmbh | Electrohydraulic control arrangement |
| CN201461564U (en) * | 2008-04-17 | 2010-05-12 | 罗伯特.博世有限公司 | Electrical hydraulic control device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102010027183A1 (en) | 2012-01-19 |
| EP2593679A2 (en) | 2013-05-22 |
| ES2573510T3 (en) | 2016-06-08 |
| WO2012007114A3 (en) | 2012-03-22 |
| EP2593679B1 (en) | 2016-04-27 |
| WO2012007114A2 (en) | 2012-01-19 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130313 |