CN2891237Y - Linear reciprocating trigger-type quick-release mechanism in on-load tapping switch - Google Patents
Linear reciprocating trigger-type quick-release mechanism in on-load tapping switch Download PDFInfo
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- CN2891237Y CN2891237Y CN 200620039574 CN200620039574U CN2891237Y CN 2891237 Y CN2891237 Y CN 2891237Y CN 200620039574 CN200620039574 CN 200620039574 CN 200620039574 U CN200620039574 U CN 200620039574U CN 2891237 Y CN2891237 Y CN 2891237Y
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- gathering sill
- slide
- base
- gunlock
- reciprocal
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Abstract
The utility model discloses a quick release device of straight reciprocal gun used in carrier division switch, comprising a base and a movement. The movement comprises an eccentric wheel, a couple of hooks, at least one energy storage spring and at least one guide rod. The invention is characterized in that the movement also comprises an active sliding base, an inactive sliding base and two blocks, wherein the inactive sliding base comprises a body and an outer guide groove base whose inner side is disposed with a semi-round guide groove, the active sliding base comprises a body and an inner guide groove base whose outer side is disposed with a semi-round guide groove, the inner guide groove base is arranged with an impact block. The blocks are arranged above two ends of the body of movable sliding base, each energy storage spring sheaths one guide rod and above the inactive sliding base, two ends of the guide rod are fixed at two ends of the base, one end of the rotary arm of hooks is impacted by the impact block to rotate the axial sleeve, one end of the hook clamps or releases the end of a claw plate along with the rotation of the axial sleeve, and the eccentric wheel is mounted on an input axle between tow blocks of the movable sliding base. The invention has simple structure, easy application and reliable operation.
Description
Technical field
The utility model relates to the reciprocating type gunlock quick release mechanism of a kind of adjustable transformer on load tap changer cathetus.
Technical background
The on load tap changer of adjustable transformer is through long-term development, its quick mechanism generally adopts a kind of gunlock quick release mechanism shown in figure one, comprise: chassis 11, the relative both sides on this chassis 11 respectively are provided with the fixedly ear 111 that turns on, and fixedly ear is provided with installing hole; Be provided with slip lid 12-1 and following slip lid 12-2 on the chassis; Be provided with a plurality of main springs 13 of arrangement in slip lid, main spring is enclosed within on the spring guide 15, and the two ends of spring guide 15 are located at the installing hole internal fixation that fixing ear is provided with.Upper slide box 12-1 top is provided with and axle 16 eccentric wheels that are connected 17.11 outsides that are positioned at lower slide box are provided with two through holes on the chassis, are used to wear grab 18.Also be provided with a side arm 19 in the outside near lower slide box.
The operating principle of this gunlock quick release mechanism is: the rotation of an axle drive eccentric wheel, and promote block and drive upper slide box and move along slide rail 14, thus the compression main spring, and at this moment lower slide box is blocked and can not move by grab, blocks main spring one end, allows the main spring compressed energy-storage.When upper slide box drive side arm moved to corresponding grab position, the upper slide box side arm was removed corresponding grab from the locking chassis, so lower slide box discharges.Sliding seat by lower slide box reaches driving force on the axle sleeve on chassis, makes the action of contact switching mechanism.After action finished, gliding to closing moved on to new latched position, and grab is engaged on the notch on chassis under action of reset spring again, and mechanism is pinned again again, for action is for the second time got ready.
Said mechanism is highly suitable for the on load tap changer of revolving structure, must form through the transformation of the way but use in the on load tap changer of straight line switching construction, therefore makes structure become complicated.
Summary of the invention
The utility model is the shortcoming that has the gunlock quick release mechanism now in order to overcome, and a kind of reciprocal gunlock quick release mechanism of a kind of on load tap changer cathetus that aims at the on load tap changer of linear structure and use that provides.The reciprocal gunlock quick release mechanism of this on load tap changer cathetus is simple in structure, easy to use, reliable in action.
The technical scheme that the utility model is taked is: the reciprocal gunlock quick release mechanism of on load tap changer cathetus, comprise base and be located at movement in the base that described movement comprises on an eccentric wheel, a pair of grab parts, at least one main spring, at least one guide post, a slip lid and once slip lid and slide block; Described main spring is set in outside the guide post, is located at the side of covering that glides; Described each grab parts comprise a claw-plate and a pair of action piece; Be characterized in that described main spring is made of energy-stored spring; The described slip lid of going up is made of moving slide, and described moving slide comprises pedestal, and the middle part of this pedestal is provided with an elongate slot, and respectively stretching out corresponding to the position of elongate slot central authorities in the both sides of this pedestal is provided with a collision block; The below, two ends of this pedestal respectively is provided with gathering sill seat in, and two outsides of described interior gathering sill seat respectively are provided with the gathering sill of a semicircle; Described slip lid down is made of passive slide, and described passive slide comprises pedestal, and the top, two ends of this pedestal respectively is provided with a pair of outer gathering sill seat in opposite directions, and the inboard of each outer gathering sill seat respectively is provided with the gathering sill of a semicircle; Interior gathering sill seat on the described moving slide is positioned at the outer gathering sill seat of passive slide, the symmetrical and concentric of gathering sill of set semicircle on the outer gathering sill seat of the gathering sill of set semicircle and passive slide on this interior gathering sill seat; The two ends of described guide post are passed the gathering sill guiding slot port of semicircle set on the outer gathering sill seat of the interior gathering sill seat of moving slide and passive slide and fixedly are located at the base two ends; Described slide block is installed in the top, two ends of moving slide pedestal; Described claw-plate is installed in outside the outer gathering sill seat of passive slide both sides; Described every action piece comprises a pawl clamping stent, is installed in a grab and a pivoted arm on the axle sleeve; Described pawl clamping stent is installed on the base and is positioned at outside the claw-plate; Described axle sleeve is set in pawl clamping stent top; The other end of described pivoted arm can contact with the collision block on the moving slide, and is subjected to the bump of collision block and drives axle sleeve to rotate; The other end of described grab forms clamping with the rotation of described axle sleeve with the claw-plate end or shirks; Described eccentric wheel is installed on the power shaft, between two slide blocks above the pedestal of moving slide; Described power shaft passes through the elongate slot of the pedestal of moving slide.
The reciprocal gunlock quick release mechanism of above-mentioned on load tap changer cathetus, wherein, described base adopts the 1U formed steel construction.
The reciprocal gunlock quick release mechanism of above-mentioned on load tap changer cathetus, wherein, described base top is equipped with the connecting plate that has been used for reinforcement and supporting role.
The reciprocal gunlock quick release mechanism of above-mentioned on load tap changer cathetus, wherein, described base top is equipped with the connecting plate that has been used for reinforcement and supporting role, and described connecting plate is provided with axis hole, and the other end of the power shaft of described setting-up eccentricity wheel passes this axis hole.
The reciprocal gunlock quick release mechanism of above-mentioned on load tap changer cathetus, wherein, in gathering sill that the inboard of gathering sill seat is provided with outside the described passive slide two ends and the described moving slide two ends radius of the gathering sill of gathering sill seat arranged outside respectively with the similar radius of guide post, described gathering sill slides on described guide post.
The reciprocal gunlock quick release mechanism of above-mentioned on load tap changer cathetus, wherein, the end of described each claw-plate is the taper that concaves, and forms wedgelike; The shape of the other end of described grab contacts the back with the similar grab of taper that the claw-plate end concaves and forms the escapement relation with claw-plate.
The reciprocal gunlock quick release mechanism of above-mentioned on load tap changer cathetus, wherein, described base two ends respectively are provided with the axis hole that a plurality of installing holes and that are used to install guide post are used to wear output shaft.
The reciprocal gunlock quick release mechanism of above-mentioned on load tap changer cathetus wherein, also comprises at least two damping devices, and described damping device is located at the both sides of base.
The reciprocal gunlock quick release mechanism of above-mentioned on load tap changer cathetus wherein, also comprises a pair of extension spring, is located at respectively between two axle sleeves of grab parts.
The reciprocal gunlock quick release mechanism of above-mentioned on load tap changer cathetus wherein, also comprises output shaft installation central siphon, and it is located at the bottom of passive slide pedestal.
Because the utility model has adopted above technical scheme, compared with prior art, has following remarkable advantage:
1, save from circular motion and be converted to straight-line motion mechanism, designs simplification reduces energy loss.
2, adopt two guide posts, designs simplification reduces resistance to sliding.
3, adopt two grabs, improved reliability.
4, adopt two damping devices, resiliency is good.
Description of drawings
Concrete structure of the present utility model is further provided by following embodiment and accompanying drawing thereof.
Fig. 1 is the structural representation of the gunlock relieving mechanism of prior art on load tap changer.
Fig. 2 is the structural representation of the reciprocal gunlock quick release mechanism of the utility model on load tap changer cathetus.
Fig. 3 is the A direction view of Fig. 2.
Fig. 3 is the A direction view of Fig. 2.
Fig. 4 is the structural representation of the reciprocal gunlock quick release mechanism of the utility model on load tap changer cathetus movement.
Fig. 5 is the structural representation of the passive slide of the utility model.
Fig. 6 is the structural representation of the passive slide of the utility model.
Embodiment
See also Fig. 2～Fig. 6.The reciprocal gunlock quick release mechanism of the utility model on load tap changer cathetus, comprise base 21 and be located at movement 22 in the base that described movement (enlarged drawing of movement inner body as shown in Figure 4) comprises an eccentric wheel 221, a pair of grab parts 222, two energy-stored springs 223 and two guide posts 224; Also comprise moving slide 225 and a passive slide 226 and two slide blocks 227.Base adopts the 1U formed steel construction, and its two ends are provided with flange 211, respectively is provided with the axis hole 213 that some installing holes 212 and that are used to install guide post are used to wear output shaft 3 on it.Passive slide 226 (please cooperate referring to shown in Figure 6) comprises that pedestal 2260, its two ends respectively are provided with a pair of outer gathering sill seat 2261-1,2261-2 and 2262-1,2262-1 in opposite directions, and the inboard of outer gathering sill seat respectively is provided with the gathering sill 2263 of a semicircle.Moving slide 225 (please cooperate referring to shown in Figure 5) comprises pedestal 2250, its middle part is provided with a microscler slotted eye 2253, respectively stretching out corresponding to the position of elongate slot central authorities in the both sides of this pedestal is provided with a collision block 2254, and the bottom surface, end of this collision block 2254 also is connected with a runner 2255 in the present embodiment; The two ends of pedestal 2250 respectively are provided with gathering sill seat 2251-1,2251-2 in, and two outsides of gathering sill seat respectively are provided with the gathering sill 2252 of a semicircle in each; Described outer gathering sill seat is positioned at the outer gathering sill seat of passive slide, symmetrical, the concentric of gathering sill of set semicircle on the outer gathering sill seat of the gathering sill of set semicircle and passive slide on this interior gathering sill seat; Described slide block 227 is located at the top, two ends of moving slide pedestal respectively.Energy-stored spring 223 is enclosed within outside the guide post 224, is positioned on the passive slide 226,
The two ends of guide post are passed the guiding slot port of the set semicircle of passive slide 226 and moving slide 225 and fixedly are located in the installing hole 212 of base.Present embodiment is provided with two energy-stored springs, is set in respectively on the guide post separately.Half of the end face of each energy-stored spring 223 is stuck between passive slide 226 outer gathering sill seat 2261-1,2262-1 and 2261-2, the 2262-2, and second half is stuck between interior gathering sill seat 2251-1, the 2251-2 of moving slide.In gathering sill that the inboard of gathering sill seat is provided with outside the described passive slide two ends and the described moving slide two ends radius of the gathering sill of gathering sill seat arranged outside respectively with the similar radius of guide post, described gathering sill slides on described guide post.
Described each claw-plate 7 is installed in respectively outside the outer gathering sill seat of passive slide both sides.Described grab parts 222 comprise two pairs of pawl clamping stents 2222, the two pairs of axle sleeves 2223, two pairs of grabs 2224 and two pairs of pivoted arms 2225.Pawl clamping stent 2222 is installed on the base and is positioned at claw-plate 7 outsides; Each axle sleeve 2223 is set in each self-corresponding pawl clamping stent 222 top.One end of described pivoted arm 2225 and grab 2224 is fixed on the axle sleeve 2223; The other end of pivoted arm 2225 can contact with the collision block 2254 on the moving slide, and is subjected to the bump of collision block and drives axle sleeve to rotate; The other end of grab 2224 forms clamping with the rotation of axle sleeve with claw-plate 7 ends or shirks.The end of described each claw-plate is the taper that concaves, and forms wedgelike; The shape of the other end of described grab contacts the back with the similar grab of taper that the claw-plate end concaves and forms the escapement relation with claw-plate.
Described eccentric wheel 221 is installed on the power shaft 5, between two slide blocks 227 above the pedestal of moving slide.Described power shaft passes through the elongate slot of the pedestal of moving slide, the stroke that the length of this elongate slot moves around greater than power shaft.
For strengthening rigidity of the present utility model, the base top of the reciprocal gunlock quick release mechanism of the utility model on load tap changer cathetus is equipped with the connecting plate 6 that has been used for reinforcement and supporting role, this connecting plate is provided with axis hole, described power shaft 5 passes this axis hole outside base, this power shaft 5 connects the power resources of whole shunting switch, also be connected with other actuator, to carry out action by certain phase sequence.
The reciprocal gunlock quick release mechanism of the utility model on load tap changer cathetus also comprises at least two damping devices 228, is located at respectively on two side flangings of base.Present embodiment is provided with four damping devices, respectively is provided with two on two side flangings of base.
The utility model also comprises a pair of extension spring 8, is located at respectively between the pivoted arm of grab.
The reciprocal gunlock quick release mechanism of the utility model on load tap changer cathetus wherein, also comprises the installation axle hole pipe of an output shaft 3, and it is located at the below, bottom of passive slide, and is corresponding with the output shaft axis hole that is provided with on the base flange.
Operating principle of the present utility model is:
Power shaft drives eccentric wheel and rotates, eccentric rotation promotes slide block moves slide, and because of mobile promotion energy-stored spring one end of moving slide, and at this moment passive slide can not move owing to grab blocks claw-plate, block energy-stored spring one end, so energy-stored spring is compressed energy storage.Move when moving slide moves the drive collision block, it hits power the grab of a corresponding side is removed from claw-plate, and passive slide discharges, and under the energy-stored spring effect, passive slide drives the quick straight line of output shaft and moves.Near at the end, damping device works, and has avoided rigid impact.After action finished, passive slide moved on to new latched position, and grab blocks claw-plate again under the effect of back-moving spring, and mechanism is pinned again again, for action is for the second time got ready.Eccentric wheel is rotated further, and repeats above-mentioned action in the other direction, and output shaft quick straight line in the other direction moves, and finishes an actuation cycle.
Claims (10)
1, the reciprocal gunlock quick release mechanism of on load tap changer cathetus, comprise base and be located at movement in the base that described movement comprises on an eccentric wheel, a pair of grab parts, at least one main spring, at least one guide post, a slip lid and once slip lid and slide block; Described main spring is set in outside the guide post, is located at the side of covering that glides; Described each grab parts comprise a claw-plate and a pair of action piece; It is characterized in that,
Described main spring is made of energy-stored spring;
The described slip lid of going up is made of moving slide, and described moving slide comprises pedestal, and the middle part of this pedestal is provided with an elongate slot, and respectively stretching out corresponding to the position of elongate slot central authorities in the both sides of this pedestal is provided with a collision block; The below, two ends of this pedestal respectively is provided with gathering sill seat in, and two outsides of described interior gathering sill seat respectively are provided with the gathering sill of a semicircle;
Described slip lid down is made of passive slide, and described passive slide comprises pedestal, and the top, two ends of this pedestal respectively is provided with a pair of outer gathering sill seat in opposite directions, and the inboard of each outer gathering sill seat respectively is provided with the gathering sill of a semicircle;
Interior gathering sill seat on the described moving slide is positioned at the outer gathering sill seat of passive slide, the symmetrical and concentric of gathering sill of set semicircle on the outer gathering sill seat of the gathering sill of set semicircle and passive slide on this interior gathering sill seat;
The two ends of described guide post are passed the gathering sill notch of semicircle set on the outer gathering sill seat of the interior gathering sill seat of moving slide and passive slide and fixedly are located at the base two ends;
Described slide block is installed in the top, two ends of moving slide pedestal;
Described claw-plate is installed in outside the outer gathering sill seat of passive slide both sides;
Described two action pieces respectively comprise a pawl clamping stent, are installed in a grab and a pivoted arm on the axle sleeve; Described pawl clamping stent is installed on the base and is positioned at outside the claw-plate; Described axle sleeve is set in pawl clamping stent top; The other end of described pivoted arm can contact with the collision block on the moving slide, and is subjected to the bump of collision block and drives axle sleeve to rotate; The other end of described grab forms clamping with the rotation of described axle sleeve with the claw-plate end or shirks;
Described eccentric wheel is installed on the power shaft, between two slide blocks above the pedestal of moving slide; Described power shaft passes through the elongate slot of the pedestal of moving slide.
2, the reciprocal gunlock quick release mechanism of on load tap changer cathetus according to claim 1 is characterized in that, described base adopts the 1U formed steel construction.
3, the reciprocal gunlock quick release mechanism of on load tap changer cathetus according to claim 1 is characterized in that, described base top is equipped with the connecting plate that has been used for reinforcement and supporting role.
4, the reciprocal gunlock quick release mechanism of on load tap changer cathetus according to claim 1, it is characterized in that, described base top is equipped with the connecting plate that has been used for reinforcement and supporting role, described connecting plate is provided with axis hole, and the other end of the power shaft of described setting-up eccentricity wheel passes this axis hole.
5, the reciprocal gunlock relieving mechanism of on load tap changer cathetus according to claim 1, it is characterized in that, in gathering sill that the inboard of gathering sill seat is provided with outside the described passive slide two ends and the described moving slide two ends radius of the gathering sill of gathering sill seat arranged outside respectively with the similar radius of guide post, described gathering sill slides on described guide post.
6, the reciprocal gunlock quick release mechanism of on load tap changer cathetus according to claim 1 is characterized in that, the end of described each claw-plate is the taper that concaves, and forms wedgelike; The shape of the other end of described grab contacts the back with the similar grab of taper that the claw-plate end concaves and forms the escapement relation with claw-plate.
7, the reciprocal gunlock quick release mechanism of on load tap changer cathetus according to claim 1 is characterized in that, described base two ends are provided with the axis hole that a plurality of installing holes and that are used to install guide post are used to wear output shaft.
8, the reciprocal gunlock quick release mechanism of on load tap changer cathetus according to claim 7 is characterized in that, also comprise at least two damping devices, described damping device is located on the dual-side of base.
9, the reciprocal gunlock quick release mechanism of on load tap changer cathetus according to claim 1 is characterized in that, also comprises a pair of extension spring, is located at respectively between two axle sleeves of grab parts.
10, the reciprocal gunlock quick release mechanism of on load tap changer cathetus according to claim 1 is characterized in that, also comprises output shaft installation central siphon, and it is located at the bottom of passive slide pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620039574 CN2891237Y (en) | 2006-02-20 | 2006-02-20 | Linear reciprocating trigger-type quick-release mechanism in on-load tapping switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620039574 CN2891237Y (en) | 2006-02-20 | 2006-02-20 | Linear reciprocating trigger-type quick-release mechanism in on-load tapping switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2891237Y true CN2891237Y (en) | 2007-04-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620039574 Expired - Fee Related CN2891237Y (en) | 2006-02-20 | 2006-02-20 | Linear reciprocating trigger-type quick-release mechanism in on-load tapping switch |
Country Status (1)
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|---|---|
| CN (1) | CN2891237Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102024552A (en) * | 2009-09-15 | 2011-04-20 | 上海华明电力设备制造有限公司 | Large-rotating angle quick mechanism used for on-load tap-changer |
| CN102054599A (en) * | 2009-11-06 | 2011-05-11 | 贵州长征电力设备有限公司 | Elevating and rotating mechanism of changeover switch |
| EP2535910A1 (en) | 2011-06-15 | 2012-12-19 | ABB Research Ltd. | An energy accumulator for actuating a switching device, a tap changer and a transformer |
| CN103460311A (en) * | 2011-03-28 | 2013-12-18 | 株式会社东芝 | Energy-storing mechanism with forcing mechanism, and on-load tap changing device |
| CN112259389A (en) * | 2020-10-14 | 2021-01-22 | 上海华明电力设备制造有限公司 | Operating mechanism of one-way on-load tap-changer |
-
2006
- 2006-02-20 CN CN 200620039574 patent/CN2891237Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102024552A (en) * | 2009-09-15 | 2011-04-20 | 上海华明电力设备制造有限公司 | Large-rotating angle quick mechanism used for on-load tap-changer |
| CN102024552B (en) * | 2009-09-15 | 2012-10-03 | 上海华明电力设备制造有限公司 | Large-rotating angle quick mechanism used for on-load tap-changer |
| CN102054599A (en) * | 2009-11-06 | 2011-05-11 | 贵州长征电力设备有限公司 | Elevating and rotating mechanism of changeover switch |
| CN102054599B (en) * | 2009-11-06 | 2013-03-27 | 贵州长征电力设备有限公司 | Elevating and rotating mechanism of changeover switch |
| CN103460311A (en) * | 2011-03-28 | 2013-12-18 | 株式会社东芝 | Energy-storing mechanism with forcing mechanism, and on-load tap changing device |
| US9343244B2 (en) | 2011-03-28 | 2016-05-17 | Kabushiki Kaisha Toshiba | Energy-storing unit with forcing mechanism, and on-load tap changing device |
| EP2535910A1 (en) | 2011-06-15 | 2012-12-19 | ABB Research Ltd. | An energy accumulator for actuating a switching device, a tap changer and a transformer |
| CN112259389A (en) * | 2020-10-14 | 2021-01-22 | 上海华明电力设备制造有限公司 | Operating mechanism of one-way on-load tap-changer |
| CN112259389B (en) * | 2020-10-14 | 2023-06-20 | 上海华明电力设备制造有限公司 | Operating mechanism of unidirectional on-load tap-changer |
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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: HUAMING POWER EQUIPMENT MANUFACTURING CO., LTD., Free format text: FORMER OWNER: HUAMING POWER EQUIPMENT MANUFACTURING CO., LTD., SHANGHAI Effective date: 20080711 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080711 Address after: Shanghai City, the same way No. 977, zip code: 200333 Co-patentee after: Shanghai Huaming High-Voltage Switchgear Co., Ltd. Patentee after: Shanghai Huaming Power Equipment Manufacturing Co., Ltd. Co-patentee after: Shanghai Huaming High-Voltage Electrical R&D Co., Ltd. Address before: Shanghai City, the same way No. 977, zip code: 200333 Patentee before: Huaming Power Equipment Manufacturing Co., Ltd., Shanghai |
|
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI HUAMING HIGH-VOLTAGE SWITCHGEAR CO., LTD. Free format text: FORMER OWNER: SHANGHAI HUAMING HIGH-VOLTAGE SWITCHGEAR CO., LTD. SHANGHAI HUAMING HIGH-VOLTAGE ELECTRICAL R+D CO., LTD. Effective date: 20141209 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20141209 Address after: 200333 Shanghai City No. 977 in the same way Patentee after: Huaming Power Equipment Manufacturing Co., Ltd., Shanghai Patentee after: Shanghai Huaming High-Voltage Switchgear Co., Ltd. Address before: 200333 Shanghai City No. 977 in the same way Patentee before: Huaming Power Equipment Manufacturing Co., Ltd., Shanghai Patentee before: Shanghai Huaming High-Voltage Switchgear Co., Ltd. Patentee before: Shanghai Huaming High-Voltage Electrical R&D Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070418 Termination date: 20150220 |
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| EXPY | Termination of patent right or utility model |