CN201266571Y - Novel railway phase control permanent magnet mechanism vacuum circuit breaker - Google Patents
Novel railway phase control permanent magnet mechanism vacuum circuit breaker Download PDFInfo
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- CN201266571Y CN201266571Y CNU2008200300063U CN200820030006U CN201266571Y CN 201266571 Y CN201266571 Y CN 201266571Y CN U2008200300063 U CNU2008200300063 U CN U2008200300063U CN 200820030006 U CN200820030006 U CN 200820030006U CN 201266571 Y CN201266571 Y CN 201266571Y
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- breaker
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Abstract
The utility model provides a novel vacuum circuit breaker of a railway phase control permanent magnetic mechanism, which is used for controlling and protecting three phase current capacitance load and inductive load in industrial and mining enterprises, power plants and transformer substations, especially for opening and closing, breaking and protecting of the high voltage traction lines of electrified railway traction substations and switching stations. The vacuum circuit breaker uses a permanent magnetic mechanism as an operation mechanism, thus realizing high-accuracy closing of a mechanical switch. The utility model comprises a vacuum arc quenching chamber of excellent insulating performance and arc quenching performance, a permanent magnetic operation mechanism of long service life and high reliability, a controller of high performance, an L-shaped support frame and the like. The vacuum circuit breaker of the railway phase control permanent magnetic mechanism integrates circuit breaker technology, power electronic technology, sensor technology, electronic measurement and control and software engineering technology for use, adopts the advanced permanent magnetic operation mechanism, realizes the reliability and stability of separating and closing brake of the circuit breaker, ensures the accuracy of phase-selecting closing brake and increases the accuracy and work efficiency of tests greatly.
Description
Technical field
Railway phased permanent magnet mechanism vacuum circuit-breaker of the present utility model relates to the high-voltage electrical equipment field, a kind of usefulness that is applicable to industrial and mining enterprises, power plant and electric substation's control and protection three-phase alternating current electric capacity load and inductive load; Close the pass that is particularly useful for traction substation of electric railway, switching station high pressure traction circuit, the phased permanent magnetism vacuum circuit-breaker of railway of disjunction and protection.
Background technology
At present; the railway primary cut-out of domestic 12KV and above electric pressure; an important problem is exactly when suiting inductive or capacity load; instantaneous voltage can occur and shove more greatly; this is not only unfavorable to the insulation system of power equipment; can cause that also protective device produces misoperation, influences the stability of electric power system.Moreover in electric railway operation net, the railway primary cut-out adopts the spring energy-storage operating mechanism more, and invests outside the railway Switch main body; Because its complicated in mechanical structure, parts are many, intermediate link is many, in addition can not integral sealing, make and adhere to dirt or the serious operating mechanism of corrosion easily produces misoperation or " getting stuck " malfunctioning phenomenon, influence normal power supply; And the anti-fatigue performance of spring is poor, the life-span short (about 10000 times), dispersed big, poor controllability of operating time, failure rate height, make power supply quality be subjected to very big influence in fail safe and reliability, the circuit breaker volume of spring mechanism is big in addition, can not satisfy the novel breaker requirement of big capacity, intellectuality, miniaturization development far away.Though the permanent magnet mechanism circuit-breaker of domestic market release in recent years replaces the spring mechanism life-span to increase to 100,000 time, but the movable wheel on its movable chassis, control cubicle bottom is at ground running, the dynamic/static contact device closure is difficult for aiming at sometimes, misoperation takes place easily, and the hand push control cubicle carries out closure entirely by feel, and the reliability of operation is difficult to guarantee.
Summary of the invention
The utility model purpose provides a kind of novel railway phased permanent magnet mechanism vacuum circuit-breaker, problems such as the railway circuit breaker suited instability in the past, precision is low, dispersiveness is big to overcome, poor controllability, failure rate height, its controller (intelligent control module) can make circuit breaker close at the designated phase place of system voltage waveform and close, implement synchronous break-make, shoving and overvoltage when avoiding producing operation, shortened the transient process of electric power system, improve the stability of the quality of power supply and electric power system, and guaranteed the precision of closing a floodgate; Vacuum interrupter and permanent-magnet operating mechanism reach more than 100,000 times the life-span of circuit breaker, guaranteed the fail safe and the reliability of circuit breaker on/off switch, the railway circuit breaker operating efficiency that has improved greatly.
For achieving the above object, the utility model phased permanent magnet mechanism vacuum circuit-breaker is achieved by the following technical programs:
A kind of novel railway phased permanent magnet mechanism vacuum circuit-breaker, its spy includes: high performance and long service life vacuum interrupter, permanent-magnet manipulating mechanism, controller, L type bracing frame; Insulation vacuum interrupter, permanent-magnet operating mechanism and controller are connected on the circuit breaker fixed frame, the insulated tension pole of insulation in the arc control device by excess of stroke tube indirectly and permanent-magnet operating mechanism output shaft straight line in succession, controller (3) by interface by lead-in wire is connected with the lead-in wire of solenoid in the permanent-magnet manipulating mechanism by controller to the phased permanent magnet mechanism vacuum circuit-breaker enforcement monitor, send a deciliter instruction, the control permanent-magnet manipulating mechanism drives the divide-shut brake that vacuum interrupter carries out railway phased permanent magnet mechanism vacuum circuit-breaker; There is movable chassis the fixed frame below, and roller is installed on the chassis; Whole circuit breaker is shifted onto on the L type bracing frame by the chassis car and is carried out on/off switch by the Mume flower contact that is installed on the contact arm.
One of described permanent-magnet manipulating mechanism can provide the Monostable permanent magnetic mechanism of divide-shut brake action; Permanent-magnet manipulating mechanism adopts the electronic logic module controls, and influences operating characteristics by the exciting current of the real-time operating coil of power electronic element.
Described controller comprises the defeated people of alternating current-direct current 220V ± 20% power supply of working, and exchanges 100～220V power source voltage synchronous phase signal, on/off switch control loop, operating coil and storage capacitor.
The roller of steel is housed on the chassis bottom the described L type bracing frame, the slide rail that has angle steel to make on the horizontal plane of bracing frame, circuit breaker fixed frame, and roller rolls on sliding-rail groove; On the chassis of circuit breaker fixed frame bottom the gathering sill of propelling and mutual interlocking gear are arranged, with
The part adapted of relevant guiding, interlocking on the type bracing frame horizontal plane.
The utility model design feature is mainly reflected in:
1, adopts the high performance and long service life vacuum interrupter.This vacuum interrupter makes the phased permanent magnet mechanism vacuum circuit-breaker have excellent insulation property and arc extinction performance.Arc control device are installed in the epoxy resins insulation tube, can prevent that not only vacuum interrupter is subjected to the destruction of external factor, and can improve the external insulation level of arc control device; Arc control device adopt contact material of chrome copper alloy, the cup shape and longitudinal magnetic field structure of contact terminal, and the electrical wear speed of its contact is little, and electric life is long, the withstand voltage level height of contact, the medium dielectric strength is stable, recovers rapidly behind the arc, and Chopping Current is low, and connecting-disconnecting function is strong.
Adopt the vacuum interrupter of condition of high vacuum degree to come blow-out and insulation, compare with other medium and to have the dielectric strength height, the fireballing characteristics of medium recovery, the bellows of vacuum interrupter is through special processing in addition, and adopting synchronously simultaneously, the pass technology of closing has improved machinery and electrical endurance greatly.
2, adopt permanent-magnet manipulating mechanism.Permanent-magnet manipulating mechanism keeps by permanent magnet suction in "on" position, only needs when on/off switch is operated the logical little electric current of pulse of coil; Energy consumption is low, and is rational in infrastructure, and transmission is simple, and motion steadily.The permanent-magnet manipulating mechanism control section is all-electronin control, can realize the accurate control to motion parts, and it is simple to connect circuit, and volume is little, and cost is low.
3, controller (intelligence is selected the phase control module).The high performance of control module can be according to the voltage signal of outside input as reference signal, and control phased permanent magnet mechanism vacuum circuit-breaker is in time accurately finished the divide-shut brake of circuit breaker preestablishing voltage-phase (electrical degree).
4, L type bracing frame.Bracing frame is made the L type, and the slide rail of angle steel making is arranged on the horizontal plane of bracing frame, and the roller of steel is housed on the chassis of circuit breaker fixed frame bottom, and roller rolls on sliding-rail groove, nimbly and freely; Gathering sill and mutual interlocking gear are arranged, with correlated parts adapted on the L type horizontal plane, so that circuit breaker is accurately located and safe on/off switch on the chassis of base of frame.
Adopt the beneficial effect of said structure: this railway phased permanent magnet mechanism vacuum circuit-breaker can be realized any electrical degree of combined floodgate at customer requirements, can accurately control the phase angle of closing a floodgate.Combined floodgate stability reaches ± 0.2ms, solved problem such as railway breaker closing instability, precision is low, dispersiveness is big, poor controllability, failure rate height in the past, improve the operating efficiency of railway circuit breaker greatly, helped improving the integral level that China's High-Voltage Electrical Appliances are made.
The circuit breaker master-plan is a handcart-type, vacuum interrupter is in insulating sleeve and be fixed on the circuit breaker fixed frame, all the other parts (controller, operating mechanism, excess of stroke tube, lubricating cup etc.) also are fixed on the circuit breaker fixed frame, the fixed frame stand is on the dolly of chassis, so structure is firmly compact, is convenient to the handcart switch cabinet of packing into.Operating mechanism is a permanent magnet mechanism, and its operating current is little, stable performance.
Circuit breaker adopts phase control closing technology, microelectric technique and permanent magnet mechanism technology, and these technology are combined application, adopt simultaneously vacuum degree high (≤1 * 10-3Pa) vacuum interrupter has the following advantages:
A) sealing-in formula pottery or glass evacuated arc control device in the middle of the circuit breaker adapted, adopt contact material of chrome copper alloy, the cup shape and longitudinal magnetic field structure of contact terminal, the electrical wear speed of its contact is little, and electric life is long, the withstand voltage level height of contact, the medium dielectric strength is stable, recover rapidly behind the arc, Chopping Current is low, and connecting-disconnecting function is strong;
B) adopt permanent-magnet manipulating mechanism, keep by permanent magnet suction, when on/off switch is operated, only need the logical little electric current of pulse of coil in "on" position; Energy consumption is low, and is rational in infrastructure, and transmission is simple, and motion steadily;
C) the permanent-magnet manipulating mechanism control section is all-electronin control, can realize the accurate control to motion parts, and it is simple to connect circuit, and volume is little, and cost is low;
D) mechanical endurance height, reliability height, the few maintenance;
E) adopt the high performance and long service life vacuum interrupter, make circuit breaker have excellent insulation property and arc extinction performance; Arc control device are installed in the epoxy resins insulation tube, can prevent that not only arc control device are subjected to the destruction of external factor, and can improve the external insulation level of arc control device.
Description of drawings
Fig. 1 is the utility model perspective view.
Fig. 2 is the utility model sectional structure chart.
Fig. 3 is the utility model control principle schematic diagram.
Fig. 4 is a permanent magnet mechanism structural representation in the utility model.
Embodiment
For further understanding feature, technological means and the specific purposes that reached, the function of the utility model railway phased permanent magnet mechanism vacuum circuit-breaker, describe in further detail below in conjunction with accompanying drawing and embodiment.
Be convenient narration, description of reference numerals is as follows among Fig. 1, Fig. 2:
1-vacuum interrupter, 2-permanent-magnet operating mechanism, 3-controller, 4-L type bracing frame, the assembling of 5-insulating cylinder, 6-panel, 7-support, the welding of 8-bent plate, 9-handle, 10-support, 11-guide housing, 12-cap and spring, 13-auxiliary switch, 14-guide post, 15-finger plate, 16-pedal, 17-chassis, 18-split pin, 19-roller, 20-oil bumper, 21-spring, 22-spring assembly, 23-bar and gear, 24-Mume flower contact, 25-contact arm.
Railway phased permanent magnet mechanism vacuum circuit-breaker (hereinafter to be referred as circuit breaker) is mainly by insulation vacuum interrupter 1, permanent- magnet operating mechanism 2,4 four most of compositions of controller (intelligence is selected the phase control module, sees Fig. 3) 3 and L type bracing frame.Insulation vacuum interrupter 1, permanent-magnet operating mechanism 2 and controller 3 are connected on the circuit breaker fixed frame, the insulated tension pole of insulation in the arc control device 1 by excess of stroke tube indirectly and permanent-magnet operating mechanism 2 output shaft straight lines in succession.After controller 3 (intelligence is selected the phase control module) is accepted the divide-shut brake control signal and is sent deciliter instruction, the divide-shut brake electric current and voltage is put on the permanent-magnet operating mechanism solenoid by the solenoid of permanent-magnet operating mechanism 2 lead-in wire, produce electromagnetic force, start the moving iron core of permanent-magnet operating mechanism 2, the output shaft that passes through permanent-magnet operating mechanism 2 again drives the insulated tension pole in the vacuum interrupter 1 that insulate, thereby drives the purpose that the arc control device moving contact is realized circuit-breaker switching on-off.The phased permanent magnet mechanism vacuum circuit-breaker meets GB GB1984-2003 " high-voltage AC breaker " and industry standard JB3855-1996.
Fig. 1, shown in Figure 2, insulating cylinder assembling in the railway phased permanent magnet mechanism vacuum circuit-breaker, oil bumper, permanent magnet mechanism (tripping spring is contained in its inside), spring assembly (excess of stroke spring), auxiliary switches etc. all are fixed on the support with bolt assembly; Contact arm, Mume flower contact are fixed on insulating cylinder up and down on the output cylinder; The pedal of interlocking portions, the guide housing of targeting part and guide post also are fixed on the support; Roller is fixed on below the chassis.The annexation and the rigging position of all parts are seen diagram.Controller (intelligence is selected the phase control module, sees Fig. 3) is connected with the lead-in wire of solenoid in the permanent magnet mechanism by lead-in wire by interface.After the closing device energized, controller is by checking the closing device state and entering operate as normal, after treating that storage capacitor is full of electricity, the order control loop that closes a floodgate is connected, when the auxiliary switch signal is indicated in the separating brake position, close a floodgate order effectively, control module is sought the voltage synchronous phase signal, the synchronizing time point that is being provided with, control built-in HC, make storage capacitor, finish the closing operation of permanent magnet mechanism the discharge of the solenoid forward in the permanent magnet mechanism, again by the insulated tension pole in mechanism's output shaft drive insulating cylinder assembling of permanent magnet mechanism and the combined floodgate of arc control device realization phased permanent magnet mechanism vacuum circuit-breaker, this moment tripping spring and energy storage of excess of stroke spring.The separating brake situation selects the phase control module to receive the separating brake instruction in contrast, and storage capacitor is to the anti-phase charging of permanent magnet mechanism coil, and permanent magnet mechanism is finished sub-switching operation by the energy storage of tripping spring and excess of stroke spring, cushions with oil bumper at last at separating brake, in case bounce-back.
Operation principle: among Fig. 3,1,2 ends of JP1 are the working power input, connect alternating current-direct current 220V ± 20% power supply; 11,12 ends of JP1 are the voltage synchronous phase signal, exchange 100～220V power supply; 13 ends of JP1 are the control bus that closes a floodgate, and constitute the order control loop that closes a floodgate with 3 ends, constitute separating brake order control loop with 4 ends.Can constitute required control logic by string and various switching nodes; Close a floodgate control bus and 5,6 ends by deciliter position loop of position (assisting) switch formation, required operation locking control logic is provided.Other ports of DL are used for second protection; The right side of control module among the figure is by the big electric current connector of 6 cores attended operation coil and storage capacitor.
At the closing of power circuit breaker power supply, control system begins the on off state inspection and enters operate as normal, and storage capacitor was finished energy storage first in 20 seconds, later on will the additional energy storage behind the complete operation in 15 seconds, and capacitance voltage is stabilized in the Default Value value; When the order control loop connection of closing a floodgate, and switch indication in position (assisting) is closed a floodgate order effectively when the separating brake position, control module is sought the voltage synchronous phase signal, in the synchronizing time point that is provided with, controls built-in HC, make storage capacitor to the discharge of coil T/HQ forward, finish closing operation; When separating brake order control loop is connected, and position (assist) switch indicates not when the separating brake position, and the separating brake order is effective, and control module is cancelled every other instruction, controls built-in TC, makes storage capacitor to coil T/HQ back discharge, finishes sub-switching operation.
The breaker mechanical blocking lever makes handcart must guarantee just can enter working position at sub-gate position, electrical interlock guarantee mechanism under situation about not powering up all the time at sub-gate position.
This railway phased permanent magnet mechanism vacuum circuit-breaker merges circuit breaker technology, power electronic technology, sensor technology, electronic measurement and control and software engineering technology with utilization, adopt advanced permanent-magnet manipulating mechanism, the circuit-breaker switching on-off reliability and stability have been realized, and guaranteed the accuracy of phase selection, technologically speaking, have the following advantages: 1, the long-life.Adopt long-life vacuum arc control device and custom-designed permanent-magnet manipulating mechanism, guarantee that the life-span of circuit breaker is no less than 100,000 times.2, reliability height.This product component quantity is few, adopts Monostable permanent magnetism operating mechanism, close, gate-dividing state keeps by permanent magnetism, sluice separating spring respectively, improved the reliability of circuit breaker greatly.3, phase selection precision height.This product is selected high performance permanent magnetic materials for use, and the closing time discreteness is little; Control Software is powerful, and the phase angle Select Error is little, guarantees phase selection precision ± 3.6 °.Can realize simultaneously 0～360 ° continuous adjustable, 0.5 ° of step-length; Interlocking device's positioning and locking has guaranteed that dynamic/static contact is closed reliable in addition, prevents misoperation.4, control technology advanced person.Permanent-magnet manipulating mechanism adopts the system controlled by computer mode to regulate branch, closing speed, satisfies the requirement of relevant national standard regulation, and thoroughly eliminates spring, increases substantially the life-span of switch.5, easy to operate, interchangeability is good.Adopt slide rail, make the circuit breaker operation easy and convenient; If conductive moving contact damages, the continuation operation that can renew, versatility and interchangeability are good.6, communication is convenient.Controller leaves standard communication, and networking very easily realizes the teledata exchange.
Wherein permanent-magnet manipulating mechanism is seen Fig. 4:
Permanent-magnet manipulating mechanism belongs to the permanent-magnet manipulating mechanism of actuating switch, circuit breaker etc.Permanent-magnet manipulating mechanism mainly is made of moving iron core 4-1, static iron core inner ring 4-2, static iron core outer ring 4-3, solenoid 4-4, permanent magnet 4-5, the fixed head 4-6 of mechanism, the output shaft 4-7 of mechanism etc.Permanent magnet 4-5 waters solid between static iron core inner ring 4-2 and static iron core outer ring 4-3 with epoxy resin, static iron core inner ring 4-2 and static iron core outer ring 4-3 are fixed by bolts on the fixed head 4-6 of mechanism.In operating process, give solenoid 4-4 lead-in wire by forward and reverse electric pulse current, solenoid 4-4 will produce the synthetic magnetic force in the magnetic field that is produced by the magnetic field of its foundation and permanent magnet 4-5 itself, promote the moving iron core 4-1 componental movement of making a match, and by mechanism's output shaft 7 drive switches indirectly, circuit breaker is done the on/off switch action.
Permanent-magnet manipulating mechanism has simple in structure, and the life-span is long, the advantage that reliability is high.Because permanent-magnet operating mechanism adopts the electronic logic module controls, and by power electronic element in real time the exciting current of operating coil influence operating characteristics, it provides the operating mechanism platform of a high flexible.Based on this platform, by different control system, can realize closing closing operation fast synchronously, realize the integrated and intelligent of height.Along with the further raising of electronic devices and components reliability, the application that permanent-magnet manipulating mechanism will be more extensively and profoundly.
In sum, the present invention is preferred embodiment, and the present invention as above-mentioned patent specification and graphic content, makes sample and through use test, proves really to reach its purpose of expecting and effect that practical value is unquestionable.
Above illustrated embodiment is only with for conveniently illustrating the present invention, be not that the present invention is done any pro forma restriction, can not with the scope of qualification the invention process, have in the technical field under any and know the knowledgeable usually, if in the scope that does not break away from technical characterictic that the present invention carries, utilize disclosed technology contents to do the local equivalent embodiment that changes or modify, and do not break away from technical characterictic content of the present invention, all still belong in the scope of the technology of the present invention feature.
Claims (3)
1, a kind of novel railway phased permanent magnet mechanism vacuum circuit-breaker is characterized in that including: high performance and long service life vacuum interrupter (1), permanent-magnet manipulating mechanism (2), controller (3), L type bracing frame (4); Insulation vacuum interrupter (1), permanent-magnet operating mechanism (2) and controller (3) are connected on the circuit breaker fixed frame, insulated tension pole in insulation arc control device (1) by excess of stroke tube indirectly and permanent-magnet operating mechanism (2) output shaft straight line in succession, controller (3) by interface by lead-in wire is connected with the lead-in wire of solenoid in the permanent-magnet manipulating mechanism (2) by controller (3) to the phased permanent magnet mechanism vacuum circuit-breaker enforcement monitor, send a deciliter instruction, control permanent-magnet manipulating mechanism (2) drives the divide-shut brake that vacuum interrupter (1) carries out railway phased permanent magnet mechanism vacuum circuit-breaker; There is movable chassis (17) the fixed frame below, and roller (19) is installed on the chassis; Whole circuit breaker is shifted L type bracing frame (4) onto by the chassis car and is upward carried out on/off switch by the Mume flower contact (24) that is installed on the contact arm (25).
2, railway phased permanent magnet mechanism vacuum circuit-breaker according to claim 1 is characterized in that: described permanent-magnet manipulating mechanism (2) is a Monostable permanent magnetic mechanism that the divide-shut brake action can be provided; Permanent-magnet manipulating mechanism adopts the electronic logic module controls, and influences operating characteristics by the exciting current of the real-time operating coil of power electronic element.
3, railway phased permanent magnet mechanism vacuum circuit-breaker according to claim 1, it is characterized in that: described L type bracing frame (4), the slide rail that on the horizontal plane of bracing frame, has angle steel to make, the roller (19) of steel is housed on the chassis of circuit breaker fixed frame bottom, and roller rolls on sliding-rail groove; On the chassis (17) of circuit breaker fixed frame bottom the gathering sill of propelling and mutual interlocking gear are arranged, with the part adapted of relevant guiding, interlocking on L type bracing frame (4) horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200300063U CN201266571Y (en) | 2008-08-12 | 2008-08-12 | Novel railway phase control permanent magnet mechanism vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200300063U CN201266571Y (en) | 2008-08-12 | 2008-08-12 | Novel railway phase control permanent magnet mechanism vacuum circuit breaker |
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| Publication Number | Publication Date |
|---|---|
| CN201266571Y true CN201266571Y (en) | 2009-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200300063U Expired - Lifetime CN201266571Y (en) | 2008-08-12 | 2008-08-12 | Novel railway phase control permanent magnet mechanism vacuum circuit breaker |
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| CN (1) | CN201266571Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101840808A (en) * | 2010-03-15 | 2010-09-22 | 常州太平洋电力设备(集团)有限公司 | Special circuit breaker of electrified railway |
| CN101667505B (en) * | 2009-07-16 | 2013-11-20 | 东莞市广安电气检测中心有限公司 | Heavy-current phase control closing device |
-
2008
- 2008-08-12 CN CNU2008200300063U patent/CN201266571Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101667505B (en) * | 2009-07-16 | 2013-11-20 | 东莞市广安电气检测中心有限公司 | Heavy-current phase control closing device |
| CN101840808A (en) * | 2010-03-15 | 2010-09-22 | 常州太平洋电力设备(集团)有限公司 | Special circuit breaker of electrified railway |
| CN101840808B (en) * | 2010-03-15 | 2012-04-18 | 常州太平洋电力设备(集团)有限公司 | Special circuit breaker of electrified railway |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHAANXI KERUI BAOTONG PERMANENT MAGNETIC SWITCH CO Free format text: FORMER OWNER: BAOJI SYNCHRONOUS ELECTRICAL APPLIANCE CO., LTD. Effective date: 20110920 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 721006 BAOJI, SHAANXI PROVINCE TO: 712000 XIANYANG, SHAANXI PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20110920 Address after: 712000 enterprise research and development center, Tsinghua Science and technology zone, Xianyang, Shaanxi, No. 4 Patentee after: Shaanxi CREE same permanent magnet switch Co., Ltd. Address before: 721006 No. 13 Ying Da Road, hi tech Zone, Shaanxi, Baoji Patentee before: Baoji Synchronous Electrical Appliance Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: BAOJI SYNCHRONOUS ELECTRICAL APPLIANCE CO., LTD. Free format text: FORMER OWNER: SHAANXI CREAT BAOTONG PERMANENT MAGNETIC SWITCH CO., LTD. Effective date: 20130123 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 712000 XIANYANG, SHAANXI PROVINCE TO: 721006 BAOJI, SHAANXI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130123 Address after: 721006 No. 13 Ying Da Road, hi tech Development Zone, Shaanxi, Baoji Patentee after: Baoji Synchronous Electrical Appliance Co., Ltd. Address before: 712000 enterprise research and development center, Tsinghua Science and technology zone, Xianyang, Shaanxi, No. 4 Patentee before: Shaanxi CREE same permanent magnet switch Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090701 |