CN201540835U - Device for hydraulic drive device of electric switch - Google Patents
Device for hydraulic drive device of electric switch Download PDFInfo
- Publication number
- CN201540835U CN201540835U CN200920150384XU CN200920150384U CN201540835U CN 201540835 U CN201540835 U CN 201540835U CN 200920150384X U CN200920150384X U CN 200920150384XU CN 200920150384 U CN200920150384 U CN 200920150384U CN 201540835 U CN201540835 U CN 201540835U
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- China
- Prior art keywords
- piston
- delay
- hydraulic
- reversal valve
- stroke
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- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
- H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
- H01H33/34—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator hydraulic
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- Fluid-Pressure Circuits (AREA)
Abstract
The utility model relates to a device for hydraulic drive device (10) of electric switch. The electric switch is provided with a power switch and at least one auxiliary switch; the hydraulic drive device comprises a piston and a cylinder and is designed for operating the power switch, or an electric contact thereof and the auxiliary switch; wherein, the device for the hydraulic drive device (10) comprises a pre-control device (12), a hydraulic delay device (14) and at least one 3/2 reversal valve (16), which are connected by liquid and passed through the hydraulic liquid. The pre-control device (12) and the 3/2 reversal valve (16) together facilitate the hydraulic control of the hydraulic delay device (14).
Description
Technical field
The utility model relates to a kind of device, the hydraulic transmission that is used for electric switch equipment, this electric switch equipment has power switch and at least one auxiliary switch, this hydraulic transmission is made of piston-cylinder-layout, and it is designed for controlling power switch or its electrical contact and auxiliary switch.
Background technology
Total institute is known, and the hydraulic drive transmission device is applied to having the electric switch equipment of a plurality of power switchs, its partly with the spring energy storage equipment combination of machinery, this spring energy storage equipment was called as hydromechanical spring accumulation of energy transmission device afterwards.But She Ji transmission device carries out work by differential piston usually and plays the loading of handling related power switch or its electrical contact by means of the hydraulic valve of hydraulic pressure pre-control like this.
The utility model is based on the hydromechanical spring accumulation of energy transmission device of AHMA and HMB model, and it especially uses in the high voltage switchgear, so that carry out the manipulation of electrical contact on different switching sequences.These switching sequences are controlled on secondary techniques, but also can block by an auxiliary switch on driving end.
Auxiliary switch is made of a series of contacts, and closed and disconnected is carried out according to the transmission position in these contacts.
Switch (the C=close-closing of contact at so-called CO-; The O=open-contact disconnects) in, when connecting, having sent the signal that is used for shutoff signal, wherein corresponding electric current but keeps interrupting by auxiliary switch, arrives on-position apace until transmission device.This switching sequence is also referred to as " connection on the shutoff signal that exists " and particularly important when short trouble occurring.From other faults, select short circuit under the electric arc influence by short time connection again.
Be used to move needed time interval of this controlled transmission (so-called CO time) of upset is still very short for some switchgears, so that play the effect that a kind of rule is connected in switch terminals.Therefore these times will prolong.Yet, be breaking at this and can relate to connection before.At this, necessary condition is to be limited to the time of connecting between end and the cut-out beginning.
The solution of electric or electronics also is not provided for these problems.
First solution has been described in DE 10 2,006 058 042, but this scheme only solves this technical problem up till now for this reason by halves, a kind of hydraulic transmission that is used for electric switch equipment of this conceptual design, this switchgear has a plurality of power switchs that have a hydraulic pressure-electrical delay mechanism, and this hydraulic pressure-electrical delay mechanism covered in the time interval of connecting between end and the cut-out beginning.The prolongation of delay device run duration will be provided thus thereupon, and therefore the relative deviation in movement velocity will cause with the deviation of CO time disproportionate.
In addition, based on the motion (especially at low temperatures) of the rapid delay of differential piston, a kind of local laminar flow in the aperture is present on the position of pure eddy current, and it might optimize a kind of delay of about qualification.This will cause extremely depending on the CO time of temperature, thereby the scope of application of delay device correspondingly will be limited.
The utility model content
For prior art, the purpose of this utility model is to strengthen a kind of hydraulic transmission that starts described type, has promptly avoided above-mentioned shortcoming and has guaranteed that in a kind of specific mode the switch of corresponding power switch handles.
For realizing this purpose, correspondingly design a kind of device that is used for hydraulic transmission according to the utility model, this device is by pre-control device, hydraulic delay mechanism and at least one 3/2 reversal valve, they form the liquid connection each other and are all flow through by hydraulic fluid, and wherein pre-control device and 3/2 reversal valve are together facilitated the hydraulic control of hydraulic delay mechanism.
In advantageous modification of the present utility model, the pre-control device has a plurality of precontrol valves, this each precontrol valve is provided for " disconnection " and " closure " of the electrical contact of corresponding power switch, this pre-control device loads on hydraulic delay mechanism like this under the transition of 3/2 reversal valve is switched, promptly pairing power switch is loaded in each default position of the switch.
According to preferred embodiment, hydraulic delay mechanism is arranged in the housing and has at least two servo pistons, and these servo pistons load by hydraulic fluid, wherein the utility model correspondingly hydraulic oil be set to hydraulic fluid.Delay device is designed to peculiar assembly, so that can be connected with 3/2 reversal valve as extra functional unit under the situation of needs.
Simultaneously, 3/2 reversal valve also is arranged in the housing and also has servo piston.
Corresponding preferred design, 3/2 reversal valve also can be co-located in the shared housing with delay device.
Design in an advantageous manner according to the utility model, at least one servo piston that is arranged in the delay device is designed to differential piston.But according to a preferred embodiment, the servo piston that is arranged in 3/2 reversal valve also is designed to differential piston.
Corresponding preferred design of the present utility model, delay device have one and postpone piston, an application piston and a return piston, and they form effective connection each other by fluid pipeline.In addition, application piston can also mate a flow divider, and this flow divider also is installed in the housing.
Advantageously, according to the device that is used for hydraulic transmission of the present utility model, return piston is parallel to and postpones the piston setting in the housing of delay device.Alternatively, return piston also can with postpone piston and be provided with concentrically, this will help, and only need a main borehole in housing, wherein the layout of fluid pipeline in housing is perhaps than in the middle complexity of being arranged in parallel of return piston.
Correspondingly, the favourable design of delay device is designed, and the adjustment stroke that postpones piston limits by stroke limiting stop in a side.At this, the stroke adjustment bolt preferably is set to be used to postpone the stroke limiting stop of piston, and the trip is regulated bolt and moved in the axial direction by the rotation of corresponding pitch in operation.
According to a particularly advantageous design, the stroke adjustment bolt has two different thread, so that can realize postponing the coarse adjustment and the fine setting of piston stroke like this by means of the stroke adjustment bolt.
Another characteristics according to hydraulic transmission of the present utility model are provided with spring assembly, and it postpones the delay spring of the motion trend of piston as influence.
A key character of the present utility model is that the adjustment power of spring assembly is constant on the broad stroke range, thereby the motion trend that postpones piston advantageously also is constant.Realized especially therefrom that the spring assembly that is set to postpone spring constitutes by the leaf spring that at least one has the indicatrix that successively decreases, this indicatrix has been facilitated spring assembly constant adjustment power on the broad stroke range.
Advantageously design in another design of the present utility model, be provided with another return piston and be used for removing delay feature at delay device, just for clear and definite hydraulic technique cost, can be advantageously, at this for being provided with a return piston by power switch or the switchgear that loads according to hydraulic transmission of the present utility model.
Also have characteristics according to hydraulic transmission of the present utility model, promptly servo piston is arranged on respectively in delay device or the 3/2 commutation valve housing like this, promptly from outside avoided the dynamic seal (packing) of seal fluid high pressure.
In other words, this will represent that hydraulic fluid only is under the high pressure in 3/2 reversal valve when postponing the loading of piston and return piston and servo piston.These functional units also all are arranged in the relevant housing, and this is expression just, and they move therein, and the corresponding cylinder chamber does not need outside the connection, thereby also do not need dynamic seal (packing).
A fluid box is used to provide pressure fluid, and hydraulic fluid extracts and flow to each servo piston of each functional unit by a corresponding pump unit from this fluid box.Sealing for pipeline or fluid pipeline and fluid box does not need dynamic seal (packing).In addition, in fact the stress level that wherein exists will be lower than and be used to load desired servo piston.Therefore, will carry out high pressure sealing with respect to the pressure in the fluid box in inside all the time according to the utility model, this fluid box only seals with respect to ambient pressure thereupon.Avoided outside seepage in this way, just oil flows to the outside.
Another advantage that is used for the device of hydraulic transmission according to the utility model is the unitary construction of delay device, and the aperture is not integrated in other members in this delay device, for example as the boring in axle bush or the module.Therefore the action of delay device can be disposed accordingly according to user's requirement.These advantages of the present utility model and other favourable designs and improvement project provide in the dependent claims.
Description of drawings
The utility model, favourable design of the present utility model and improvement project and special advantage of the present utility model will be described in detail and illustrate according to embodiment illustrated in the accompanying drawings.
Unique accompanying drawing shows the circuit diagram according to the configuration of the device that is used for hydraulic transmission of the present utility model, and this device is made of pre-control device, hydraulic delay mechanism and 3/2 reversal valve.
Embodiment
Unique accompanying drawing one schematic diagram has illustrated the configuration that is used for the device 10 of hydraulic transmission according to of the present utility model, and this device is made of pre-control device 12, hydraulic delay mechanism 14 and 3/2 reversal valve 16.Being subordinated to equally unshownedly in the assembly of hydraulic transmission 10 has a fluid box and a pump unit, this pump unit is used to 3/2 reversal valve and delay device 14 supply fluids or carries out pressure-loaded, and this delay device is used to handle electric switch equipment (not shown at this).
So-called functional unit, pre-control device 12, hydraulic delay mechanism 14 and 3/2 reversal valve 16 are represented respectively by a dotted line.They preferably are installed in respectively in the independent housing 18,20,22, and these housings are being coordinated mutually in shape and can combined in simple mode.
Pre-control device 12 has " unlatching " precontrol valve 24 and " a closing " precontrol valve 26 basically, is respectively applied for the opening and closing electric switch equipment, and hydraulic transmission 10 is provided for loading on this electric switch equipment.
The multipart case 20 that is used for delay device holds with the elongated hole with varying cross-section and postpones piston 28, it is designed to differential piston and works together by piston rod 30 and application piston 34 on a side, and this piston rod loads by playing the spring assembly 32 that postpones spring action.
For control lag piston 28, the operating room 36,38 of its both sides is connected with pre-control device 12 or precontrol valve 24,26 by fluid pipeline 40,42,44, and the liquid that wherein has two operating rooms 36,38 under the transition that postpones aperture 37 is switched connects.
The application piston 34 that can load by piston rod 30 liquid technical by control pipeline 46 all the time with " close that " precontrol valve 26 is connected, and is connected with operating room 36,38 with fluid pipeline 50 and is connected with return piston 54 by the pipeline 52 that resets by flow divider 48.
The opposite side that postpones piston 28 also has piston rod 36, and itself and adjustable stroke limiting stop 38 work together.
In the embodiment shown, be parallel to delay piston 28 and be provided with the aforementioned return piston 54 that also is designed to differential piston, it has the operating room 56,58 that is positioned on differential piston 54 both sides.
The described pipeline 52 that resets is connected with operating room 56, and operating room's 58 1 ends are connected with " unlatching " precontrol valve 24 and the other end is connected with 3/2 reversal valve 16.
3/2 reversal valve 16 also has an one-body molded differential piston 60 that piston rod 62,64 is arranged in both sides, and these piston rods are connected with piston 66,68 respectively.
The both sides of differential piston 60 also are provided with operating room 70,72, it can be distinguished fluid pipeline T, Z, the P connection that is connected successively and also optionally distinguish connection on the other hand respectively with three on the one hand, promptly is connected with " unlatching " precontrol valve 24 by penstock 74 and is connected with " closing " precontrol valve 26 by fuel tank pipeline 76.
Another interface with integrated clear valve diameter 78 makes 3/2 reversal valve 16 be connected with delay device 14 by pre-control pipeline 80.
One is loaded into operating room 82 by piston 66 and is connected with fluid pipeline P with operating room 72 and with penstock 74 by central bore 84, and this central bore is passed piston 66, piston rod 62 and partly passed piston rod 64.
Next will describe and illustrate the type of action that is used for the device 10 of hydraulic transmission according to the utility model in detail.
In the embodiment shown, be used for the device 10 of hydraulic transmission, the pressure energy storage equipment that it has the pipeline that loads liquid and operating room's (its standing connection) and is used for hydraulic transmission liquid, they are all represented by the dash area of dark color.Every other pipeline is connected also therefrom with light shadow representation with fluid box in this layout.
The resting position of configuration when running status " is closed " has been shown in unique accompanying drawing, that is to say, be used on this position of device of hydraulic transmission unshowned switchgear and close.
When switchgear moves following load condition can take place, its following switch situation of will breathing out:
Open:
Simultaneously, postponing piston 28 moves on the direction of stroke limiting stop 33 (stroke adjustment bolt).This motion also can be supported by postponing spring 32.At this, for setting in motion, application piston 34 unloads and flow divider 48 cuts out.When postponing piston 28 motions, liquid will be extruded from operating room 38.The part of these liquid flow in the pre-control pipeline 80 by postponing aperture 36, and other parts flow in the operating room 56, and return piston 54 also moves thus.
After postponing piston 28 realization stroke limiting stops 33, return piston 54 moves out from pre-control pipeline 80." unlatching " precontrol valve 24 is closed if the transmission campaign finishes the back, and then pre-control pipeline 80 passes through clear valve diameter 78 supply fluids, thereby return piston 54 can continue to move to the backstop of pressure end always.
In case return piston 54 arrives the backstop of pressure end, postpone piston 28 and on the direction of flow divider 48, move again, until application piston 34 biased and flow divider 48 unlatchings.Therefore delay feature was disengaged after certain time.
CO switches:
If also realized closing when return piston 54 motions, the control pipeline 46 of delay device 14 is connected with fuel tank pipeline 76 by " closing " precontrol valve.Pre-control pipeline 80 only is connected with fuel tank pipeline 76 with the control pipeline 46 of delay device 14 by postponing aperture 47 itself.Corresponding to the area ratio that postpones on the piston 28, the pressure in the pre-control pipeline 80 remains on the pressure in the pipeline 52 that resets and under energy storage equipment pressure.In the correct design of delay device, two pistons 28,54 and postponing in the area ratio of spring 32 just, pressure in the pre-control pipeline 80 will be on the pressure required when 3/2 reversal valve 16 is moved on penstock 74, that is to say, in this motion stage, 3/2 reversal valve 16 is gone back access failure.Because the pressure in the pre-control pipeline 80 is in the pressure of control pipeline 46 of delay device 14 and the pipeline 52 that resets on the pressure,, liquid moves in the direction of flow divider 48 so being extruded from operating room 36 and postponing piston 28.Can adjust the speed that postpones piston 28 by the selection of aperture diameter.In addition, the motion of delay piston 28 can slow down by postponing spring 32.The contact application piston 34, it will handle flow divider 48, thus pre-control pipeline 80 be connected with the control pipeline 46 of delay device 14 and pre-control pipeline 80 in pressure will descend.Present 3/2 reversal valve 16 can be changed, and that is to say, penstock 74 separates with service pipe Z and service pipe Z is connected with fuel tank pipeline 76.Transmission device 10 realizes cutting out of delay therefrom.
Close:
If realize closing according to the removing function of delay device 14, as illustrating in unlatching, then 3/2 reversal valve 16 directly controls in the flow divider of opening 48 and undelayed the cutting out of transmission device 10 realizations.In this case, the control pipeline 46 of delay device 14 all is connected with fuel tank pipeline 76 with pre-control pipeline 80.Flow out from operating room 56 and return piston 54 moves to the initial position of describing by aperture 37 by postponing for liquid.
For the correlation that is used for device with the switchgear that passes through its loading of hydraulic transmission according to of the present utility model clearly is described, will continue hereinafter to describe.
3/2 reversal valve 16 and pre-control device 12 all are respectively the members of hydraulic spring-loaded drive, and it is used for control switch equipment, for example HMB-4/8. Precontrol valve 24,26 itself is respectively by electric control.In addition, now be provided with delay device 14 according to the utility model, itself and pre-control device 12 and 3/2 reversal valve 16 constitute jointly according to the device that is used for hydraulic transmission of the present utility model.
Connect if open precontrol valve 24, then it makes energy storage equipment 72 be connected with pre-control pipeline 80.Based on area ratio, the piston 84 of 3/2 reversal valve that is to say that with the opening direction motion connection from Z to T separates and the connection from P to Z is opened.
Therefore, the ducted pressure of the Z of transmission device 10 rises and piston rod moves, and that is to say that switchgear will be opened.After beginning connection, precontrol valve 24 passes through auxiliary switch finishing control again.The ducted pressure of pre-control remains on the level of qualification by supporting aperture 78 thereupon.
When closing, close precontrol valve 26 Be Controlled and pre-control pipeline 80 and be connected with fuel tank.Piston 84 moves on closing direction, and the P pipeline is assigned to the Z pipeline and the T pipeline is connected with the Z pipeline.Therefore, ducted pressure decline of Z and transmission device are realized closing.At this, relate to sign " P, T, Z " on unique position that accompanying drawing comprised.
Reference numerals list
10 hydraulic transmissions
12 pre-control devices
14 delay devices
16 3/2 reversal valves
18 are used for the housing of pre-control device
20 are used for the housing of delay device
22 are used for 3/2 commutation valve housing
24 open precontrol valve
26 close precontrol valve
28 postpone piston
30 piston rods
31 piston rods
32 spring assemblies (delay spring)
33 stroke limiting stops (travel limits bolt)
34 application pistons
36 operating rooms 1 (delay piston)
37 postpone the aperture
38 operating rooms 2 (delay piston)
40 fluid pipelines 1
42 fluid pipelines 2
44 fluid pipelines 3
The control pipeline of 46 delay devices
47 pressure keep the aperture
48 flow dividers
50 fluid pipelines
52 pipelines that reset
54 return pistons
56 operating rooms 3 (return piston)
58 operating rooms (return piston)
60 differential pistons (3/2 reversal valve)
62 piston rods (3/2 reversal valve)
64 piston rods (3/2 reversal valve)
66 pistons (3/2 reversal valve)
68 pistons (3/2 reversal valve)
70 operating rooms (3/2 reversal valve)
72 operating rooms (3/2 reversal valve)
74 penstocks
76 fuel tank pipelines
78 clear valve diameters
80 pre-control pipelines
82 operating rooms
84 central bore
86 service pipes
Claims (18)
1. device, the hydraulic transmission (10) that is used for electric switch equipment, described electric switch equipment has power switch and at least one auxiliary switch, described hydraulic transmission is made of piston-cylinder-layout, it is designed for handles described power switch or its electrical contact and described auxiliary switch, it is characterized in that, the described device of hydraulic transmission (10) that is used for is by pre-control device (12), hydraulic delay mechanism (14) and at least one 3/2 reversal valve (16), they form the liquid connection each other and are all flow through by hydraulic fluid, and wherein said pre-control device (12) is together facilitated the hydraulic control of described hydraulic delay mechanism (14) with 3/2 reversal valve (16).
2. device according to claim 1, it is characterized in that, described pre-control device has a plurality of precontrol valves (24,26), described each precontrol valve is provided for " disconnection " and " closure " of the electrical contact of corresponding power switch, described pre-control device switches in the transition of described 3/2 reversal valve (16) and loads on described hydraulic delay mechanism down like this, and promptly pairing power switch is loaded in each position of the switch of presetting.
3. device according to claim 1 is characterized in that, described hydraulic delay mechanism (14) is arranged in the housing and has at least two servo pistons (28,34), and described these servo pistons load by hydraulic fluid.
4. device according to claim 1 is characterized in that, described 3/2 reversal valve (16) also is arranged in the housing and also has a servo piston (66).
5. device according to claim 1 is characterized in that, described 3/2 reversal valve (16) is co-located in the shared housing with described delay device (14).
6. device according to claim 3 is characterized in that, described at least one servo piston (28,34,54,66,68) is designed to differential piston.
7. device according to claim 1 is characterized in that hydraulic oil is set to described hydraulic fluid.
8. device according to claim 1 is characterized in that, described delay device (14) has one and postpones piston (28), an application piston (34) and a return piston (54), and they form effective connection each other by fluid pipeline.
9. device according to claim 8 is characterized in that, described return piston is parallel to and postpones piston (28) setting.
10. device according to claim 8 is characterized in that, described return piston is provided with concentrically with delay piston (28).
11. device according to claim 8 is characterized in that, the adjustment stroke of described delay piston (28) limits by stroke limiting stop (33) in a side.
12. device according to claim 11, it is characterized in that, the stroke adjustment bolt is provided as the described stroke limiting stop (33) that is used for described delay piston (28), and described stroke adjustment bolt moves in the axial direction by the rotation of corresponding pitch in operation.
13. device according to claim 12 is characterized in that, described stroke adjustment bolt (33) has two to realize the different thread of coarse adjustment and fine setting.
14. device according to claim 8 is characterized in that, spring assembly (32) is set to be used to influence the delay spring of the motion trend of described delay piston (28).
15. device according to claim 14 is characterized in that, the adjustment power of described spring assembly (32) is constant on the broad stroke range.
16. device according to claim 14, it is characterized in that, the spring assembly (32) that is set to described delay spring constitutes by the leaf spring that at least one has the indicatrix that successively decreases, and described indicatrix has been facilitated described spring assembly constant adjustment power on the broad stroke range.
17. device according to claim 1 is characterized in that, another return piston (54) is provided for removing the delay feature in described delay device (14).
18. device according to claim 3, it is characterized in that, described servo piston (28,34,54,66,68) is arranged on respectively in the housing of described delay device (14) or described 3/2 reversal valve (16) like this, promptly from outside avoided the dynamic seal (packing) of seal fluid high pressure.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200810061238 DE102008061238B4 (en) | 2008-12-09 | 2008-12-09 | Device for a hydraulic drive for an electrical switchgear |
| DE102008061238.3 | 2008-12-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201540835U true CN201540835U (en) | 2010-08-04 |
Family
ID=42220651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920150384XU Expired - Lifetime CN201540835U (en) | 2008-12-09 | 2009-05-25 | Device for hydraulic drive device of electric switch |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN201540835U (en) |
| DE (1) | DE102008061238B4 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009035889B4 (en) | 2009-08-03 | 2011-11-10 | Abb Technology Ag | Spring-loaded drive with delay circuit |
| DE102012007680B4 (en) * | 2012-03-09 | 2021-10-07 | Abb Power Grids Switzerland Ag | Hydromechanical storage module for a spring-loaded actuator of a high-voltage switch |
| CN103615434B (en) * | 2013-10-31 | 2017-02-15 | 国家电网公司 | Testing device for switch hydraulic mechanism |
| EP3496123B1 (en) * | 2017-12-06 | 2020-09-09 | TRIES GmbH & Co. KG Hydraulik-Elekmente Ehingen | Hydraulic actuator for actuating a switch and electrical installation |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3133475A (en) * | 1960-11-22 | 1964-05-19 | Gen Electric | Hydraulically-actuated operating mechanism for an electric circuit breaker |
| DE4340142C2 (en) * | 1993-11-25 | 1995-11-23 | Abb Patent Gmbh | Hydraulic device for actuating at least one linearly movable component |
| DE102006041250A1 (en) * | 2006-09-02 | 2008-03-06 | Abb Technology Ag | drive unit |
| DE102006058042A1 (en) * | 2006-12-07 | 2008-06-19 | Abb Technology Ag | Contact drive arrangement |
-
2008
- 2008-12-09 DE DE200810061238 patent/DE102008061238B4/en active Active
-
2009
- 2009-05-25 CN CN200920150384XU patent/CN201540835U/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE102008061238A1 (en) | 2010-07-01 |
| DE102008061238B4 (en) | 2010-10-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180518 Address after: Baden, Switzerland Patentee after: ABB TECHNOLOGY LTD. Address before: Zurich Patentee before: ABB Technology AG |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100804 |
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| CX01 | Expiry of patent term |