CN201771519U - Hydraulic control one-way valve with pressurization function - Google Patents
Hydraulic control one-way valve with pressurization function Download PDFInfo
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- CN201771519U CN201771519U CN2010201030891U CN201020103089U CN201771519U CN 201771519 U CN201771519 U CN 201771519U CN 2010201030891 U CN2010201030891 U CN 2010201030891U CN 201020103089 U CN201020103089 U CN 201020103089U CN 201771519 U CN201771519 U CN 201771519U
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- way valve
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- 239000007788 liquid Substances 0.000 claims abstract description 28
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 6
- 238000009423 ventilation Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
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Abstract
The utility model relates to a hydraulic control one-way valve with pressurization function, which comprises a hydraulic control part and a pressurization part, wherein the pressurization part comprises a pressurization cylinder, a pipeline, a liquid inlet pipeline and a liquid outlet pipeline, a big area cavity of the pressurization cylinder is communicated with a first liquid inlet through the pipeline, the liquid inlet pipeline feeds liquid to a small area cavity of the pressurization cylinder in one way through the first liquid inlet, and the liquid outlet pipeline discharges liquid to a stand column lower cavity in one way through the small area cavity. The pressurization cylinder comprises a cylinder body, a piston and a bulge stem, the piston is arrange din the cylinder body, the outer wall of the piston is sealed and matched with the inner wall of the cylinder body, the bulge stem is matched with the piston to separate the cylinder body into the small area cavity and the big area cavity, an end surface of one end of the piston is formed with an inner cavity, one end of the bulge stem is fixedly arranged in the cylinder body, the other end is suitable for being inserted and not prolapsing from the inner cavity of the piston, and the outer wall of an inserting end of the bulge stem is sealed with the wall of the inner cavity of the piston through contacting. The hydraulic control one-way valve with pressurization function is compact in structure, occupies small space, and is safe in use.
Description
Technical field
The utility model relates to pilot operated valve device, specifically, is a kind of hydraulic control one-way valve that is applied to the band function of increasing pressure of hydraulic support column.
Background technology
At present, in the coal mine fully-mechanized mining industry, often by in the column cavity of resorption, supplying high pressure liquid, make the column setting prop to hydraulic support back timber contact top board, and guarantee that column does not descend, after column obtains certain setting load, in the column cavity of resorption, supply pressurized liquid again, make supercharging in the column cavity of resorption, thereby make the pressure in the column cavity of resorption meet or exceed pump pressure.Behind hydraulic support back timber contact top board, can continue in the column cavity of resorption for pressurized liquid, the Hydraulic Elements that the special setting load of one cover guarantees valve need be set in the prior art usually in addition, and this setting load guarantees that valve must be to be communicated with through extra liquid road, therefore, supporting several sebific ducts also need be set.Setting load guarantees the setting of valve and sebific duct, not only makes the total complexity, and has strengthened manufacturing cost, has also increased the frequency that fault takes place simultaneously.Chinese patent literature CN101333927A has proposed a kind of the do not have first support system of high pressure of high-pressure pump and the method that the control high pressure just supports thereof, comprise column, column is connected with the setting prop pipeline, also be connected with pressurized cylinder, the rod end chamber of pressurized cylinder is connected with column, the setting prop pipeline is connected with the rod end chamber of pressurized cylinder by the unidirectional lock of topping up, and the plunger shaft of pressurized cylinder is connected with the pressurization control pipeline, and the hydraulic control mouth of the unidirectional lock of topping up is connected with the pressurization control pipeline.Pressurized cylinder can be a special supercharger, also can be to lift end jack or other jack etc.During setting prop, at first carry out setting prop control; When keeping setting prop control, carry out pressurization control then, reach the setting load that needs, wherein pressurization control can be to lift end control or fall post control etc.This utility model is simple to operation, can guarantee that hydraulic support has enough big holding power, but also have following shortcoming in actual use: 1, the pressurized cylinder of this utility model is simple piston rod and the cooperating of piston rod, in use, in order to make the piston two ends do not waited by the area of hydraulic action, thereby form the booster effect, an end of piston rod always stretches out outside the piston rod, need reserve the activity space of piston rod external part when system layout; 2, in this utility model, behind hydraulic support back timber contact top board, can continue in the column cavity of resorption for pressurized liquid, setting load need be set in addition guarantee valve and sebific duct, so not only make the total complexity, and strengthened manufacturing cost, also increased the frequency that fault takes place simultaneously.
The utility model content
For this reason, technical problem to be solved in the utility model is that thereby the piston rod in the first support system of high pressure of the prior art always stretches out pressurized cylinder and causes pressurized cylinder to take up room greatly outward, use unsafe problem, provide a kind of simple and compact for structure, the pressure compensation effect is obvious, the hydraulic control one-way valve of band function of increasing pressure easy to maintenance.
For solving the problems of the technologies described above, a kind of pressurized cylinder of the present utility model, comprise cylinder body, be arranged in the described cylinder body, the piston that lateral wall cooperates with the inner wall sealing of described cylinder body, and cooperate the abutting stem that described cylinder body is divided into small size chamber and large tracts of land chamber with described piston, form inner chamber on the one end end face of described piston, one end of described abutting stem is installed in the described cylinder body, the other end is fit to insert and do not deviate from the inner chamber of described piston, and the internal chamber wall contact seal of the outer wall of the insertion end of described abutting stem and described piston.
Above-mentioned pressurized cylinder, the position of the described abutting stem of installation of described cylinder body is provided with internal thread, and the outer wall that is installed in the end in the described cylinder body of described abutting stem is provided with external screw thread, and described abutting stem is installed in the described cylinder body by screw thread.
Above-mentioned pressurized cylinder forms cavity on the described insertion end end face of described abutting stem.
Above-mentioned pressurized cylinder, being installed on the interior end end face of described cylinder body of described abutting stem forms the ventilation cavity that communicates with described cavity, is provided with Exhaust screw in the described ventilation cavity, and described Exhaust screw is provided with housing pin.
A kind of hydraulic control one-way valve with function of increasing pressure comprises
The hydraulic control part, described hydraulic control partly comprises valve body, is provided with cavity of resorption passage that is communicated with the column cavity of resorption and first inlet and the epicoele passage that is communicated with the column epicoele and second inlet in the described valve body; And be arranged on hydraulic control one-way valve on the described cavity of resorption passage, and the outlet end of described hydraulic control one-way valve is communicated with described column cavity of resorption, and liquid feeding end is communicated with described first inlet, and control end is communicated with described second inlet;
The supercharging part, described supercharging partly comprises as above-mentioned pressurized cylinder, the pipeline that the large tracts of land chamber of described pressurized cylinder is communicated with described first inlet, by the unidirectional feed liquor pipeline of described first inlet to the unidirectional feed liquor in the small size chamber of described pressurized cylinder, and by the unidirectional fluid pipeline of described small size chamber to the unidirectional fluid of described column cavity of resorption.
The hydraulic control one-way valve of above-mentioned band function of increasing pressure, described valve body is provided with screwed hole with the end face that described supercharging partly is connected, the relevant position of described supercharging part is provided with the through hole of cooperation, by connecting screw rod is set in described through hole and screwed hole described hydraulic control part partly is connected with described supercharging.
The hydraulic control one-way valve of above-mentioned band function of increasing pressure, described screwed hole communicates with described column cavity of resorption, the end of thread of described connecting screw rod is provided with the blind hole of axial direction, the outer wall of described connecting screw rod is provided with the liquid-through hole that communicates with described blind hole, the described screwed hole of described unidirectional drain pipe route, the blind hole that communicates with described screwed hole, described liquid-through hole is communicated with described small size chamber, the connecting pipeline which is provided with first one way valve constitutes, the liquid feeding end of described first one way valve communicates with described small size chamber, and outlet end communicates with described column cavity of resorption.
The hydraulic control one-way valve of above-mentioned band function of increasing pressure, described unidirectional feed liquor pipeline are that the pipeline that is provided with second one way valve constitutes, and the liquid feeding end of described second one way valve communicates with first inlet, and outlet end communicates with described small size chamber.
The hydraulic control one-way valve of above-mentioned band function of increasing pressure, form the column cavity of resorption fast interface and the first inlet fast interface on the two ends port of described cavity of resorption passage respectively, and form the column epicoele fast interface and the second inlet fast interface on the two ends port of described epicoele passage respectively.
The hydraulic control one-way valve of above-mentioned band function of increasing pressure also is provided with satellite interface on the described valve body, described satellite interface is communicated with described column cavity of resorption by pipeline.
Technique scheme of the present utility model has the following advantages compared to existing technology, 1, in the utility model, form inner chamber on the one end end face of piston, one end of abutting stem is installed in the cylinder body, the other end is fit to insert and do not deviate from the inner chamber of piston, and the internal chamber wall contact seal of the outer wall of the insertion end of abutting stem and piston, abutting stem that sets firmly and being used of piston that forms inner chamber, make abutting stem need not stretch out and outer just can the cooperation of cylinder body cylinder body is divided into small size chamber and large tracts of land chamber with piston, not only satisfied the requirement of supercharging, and make the pressurized cylinder more compact structure, it is little to take up room, safe.
Description of drawings
For the easier quilt of content of the present utility model is clearly understood, according to specific embodiment of the utility model also in conjunction with the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is the sectional view of the hydraulic control one-way valve of band function of increasing pressure of the present utility model;
Fig. 2 is the schematic diagram of the hydraulic control one-way valve of band function of increasing pressure of the present utility model.
Reference numeral is expressed as among the figure: 1-cylinder body, 2-piston, 3-abutting stem, 4-small size chamber, 5-large tracts of land chamber, 6-Exhaust screw, 7-housing pin, 8-valve body, 9-hydraulic control one-way valve, 10-connecting screw rod, 11-column cavity of resorption fast interface, the 12-first inlet fast interface, 13-column epicoele fast interface, the 14-second inlet fast interface, 15-satellite interface, 16-first one way valve, 17-second one way valve.
The specific embodiment
As depicted in figs. 1 and 2, a kind of pressurized cylinder of present embodiment, comprise cylinder body 1, be arranged in the described cylinder body 1, the piston 2 that lateral wall cooperates with the inner wall sealing of described cylinder body 1, and cooperate the abutting stem 3 that described cylinder body 1 is divided into small size chamber 4 and large tracts of land chamber 5 with described piston 2, form inner chamber on the one end end face of described piston 2, one end of described abutting stem 3 is installed in the described cylinder body 1, the other end is fit to insert and do not deviate from the inner chamber of described piston 2, and the internal chamber wall contact seal of the outer wall of the insertion end of described abutting stem 3 and described piston 2.Described abutting stem 3 that sets firmly and being used of described piston 2 that forms inner chamber, make described abutting stem 3 need not stretch out outside the described cylinder body 1, just can cooperate described cylinder body 1 is divided into small size chamber and large tracts of land chamber with described piston 2, not only satisfied the requirement of supercharging, and make the pressurized cylinder more compact structure, it is little to take up room, safe.In the present embodiment, the position of the described abutting stem 3 of the installation of described cylinder body 1 is provided with internal thread, and the outer wall that is installed in the end in the described cylinder body 1 of described abutting stem 3 is provided with external screw thread, and described abutting stem 3 is installed in the described cylinder body 1 by screw thread.Because contact seal between the described internal chamber wall of described piston 2 and the outer wall of described abutting stem 3, when described piston 2 in the process that moves towards described abutting stem 3 directions, gas in the described inner chamber of described piston 2 by compression, in order to prevent the work of the described piston 2 of gases affect by compression, form cavity on the described insertion end end face of described abutting stem 3.Being installed on the end end face in the described cylinder body 1 of described abutting stem 3 forms the ventilation cavity that communicates with described cavity, is provided with Exhaust screw 6 in the described ventilation cavity, and described Exhaust screw 6 is provided with housing pin 7.Described Exhaust screw 6 can be convenient to the gas in the described inner chamber is discharged with the setting of described housing pin 7.
A kind of hydraulic control one-way valve with function of increasing pressure, comprise hydraulic control part and supercharging part, described hydraulic control partly comprises valve body 8, is provided with cavity of resorption passage that is communicated with the column cavity of resorption and first inlet and the epicoele passage that is communicated with the column epicoele and second inlet in the described valve body 8; And be arranged on hydraulic control one-way valve 9 on the described cavity of resorption passage, and the outlet end of described hydraulic control one-way valve 9 is communicated with described column cavity of resorption, and liquid feeding end is communicated with described first inlet, and control end is communicated with described second inlet; Described supercharging partly comprises described pressurized cylinder, the pipeline that the large tracts of land chamber 5 of described pressurized cylinder is communicated with described first inlet, by the unidirectional feed liquor pipeline of described first inlet to the small size chamber of described pressurized cylinder 4 unidirectional feed liquors, and by the unidirectional fluid pipeline of described small size chamber 4 to the unidirectional fluid of described column cavity of resorption.In the present embodiment, described valve body 8 is provided with screwed hole with the end face that described supercharging partly is connected, the relevant position of described supercharging part is provided with the through hole of cooperation, by connecting screw rod 10 is set in described through hole and screwed hole described hydraulic control part partly is connected with described supercharging.Described screwed hole communicates with described column cavity of resorption, the end of thread of described connecting screw rod 10 is provided with the blind hole of axial direction, the outer wall of described connecting screw rod 10 is provided with the liquid-through hole that communicates with described blind hole, the described screwed hole of described unidirectional drain pipe route, the blind hole that communicates with described screwed hole, described liquid-through hole is communicated with described small size chamber 4, and the connecting pipeline which is provided with first one way valve 16 constitutes.The liquid feeding end of described first one way valve 16 communicates with described small size chamber 4, and outlet end communicates with described column cavity of resorption.Described unidirectional feed liquor pipeline is that the pipeline that is provided with second one way valve 17 constitutes, and the liquid feeding end of described second one way valve 17 communicates with first inlet, and outlet end communicates with described small size chamber 4.For the ease of being connected of hydraulic control part and the upper and lower chamber of column and first and second inlet, form the column cavity of resorption fast interface 11 and the first inlet fast interface 12 on the two ends port of described cavity of resorption passage respectively, and form the column epicoele fast interface 13 and the second inlet fast interface 14 on the two ends port of described epicoele passage respectively.In order to guarantee pilot operated valve device feed flow safety, also be provided with the satellite interface 15 that is connected with safety valve or pressure meter etc. on the described valve body 8, described satellite interface 15 is communicated with described column cavity of resorption by pipeline.
The course of work of a kind of hydraulic control one-way valve with function of increasing pressure of the present utility model:
The column cavity of resorption is connected with described column cavity of resorption interface 11, the column epicoele is connected with described column epicoele interface 13, with the described first inlet interface 12, the described second inlet interface 14 is connected with corresponding reversal valve respectively
Control setting prop process:
Reversal valve is through the first inlet interface, 12 feed flows, and under action of hydraulic force, one road liquid overcomes spring force and pushes described hydraulic control one-way valve 9 open, enters the column cavity of resorption through described column cavity of resorption interface 11, makes the column setting prop.Another road liquid part is towards the described large tracts of land chamber 5 interior feed flows of described pressurized cylinder, and another part overcomes spring force, pushes described second one way valve 17 open, enters in the small size chamber 4 of pressurized cylinder.When column is raised to high workload position, set cap is with after top board contacts, and cavity pressure rises rapidly under the column, near pump pressure, described hydraulic control one-way valve 9, described second one way valve 17, described first one way valve 16 are closed under the effect of hydraulic coupling and spring force, thereby guarantee that column does not descend.Meanwhile, continue feed flow in the described large tracts of land chamber 5, utilize differential principle, make the liquid supercharging in the described small size chamber 4, until opening described first one way valve 16, the liquid that makes supercharging enters the column cavity of resorption through described column cavity of resorption interface 11 in described small size chamber 4, cavity pressure meets or exceeds pump pressure under the column thereby make
The post process falls in control:
Reversal valve is through the second inlet feed flow, the control mouth of the described hydraulic control one-way valve 9 of one road flow direction, thus open described hydraulic control one-way valve 9, make the highly pressurised liquid of column cavity of resorption flow back to first inlet through described hydraulic control one-way valve 9.Simultaneously, another road highly pressurised liquid flows to the column epicoele, and hydraulic action column epicoele ring surface forces piston rod to descend.
Obviously, the foregoing description only is for example clearly is described, and is not the qualification to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being extended out thus or change still are among the protection domain of the utility model creation.
Claims (10)
1. pressurized cylinder, comprise cylinder body (1), be arranged in the described cylinder body (1), the piston (2) that lateral wall cooperates with the inner wall sealing of described cylinder body (1), and cooperate the abutting stem (3) that described cylinder body is divided into small size chamber (4) and large tracts of land chamber (5) with described piston (2), it is characterized in that: form inner chamber on the end end face of described piston (2), one end of described abutting stem (3) is installed in the described cylinder body (1), the other end is fit to insert and do not deviate from the inner chamber of described piston (2), and the internal chamber wall contact seal of the outer wall of the insertion end of described abutting stem (3) and described piston (2).
2. pressurized cylinder according to claim 1, it is characterized in that: the position of the described abutting stem of installation (3) of described cylinder body (1) is provided with internal thread, the outer wall that is installed in the end in the described cylinder body (1) of described abutting stem (3) is provided with external screw thread, and described abutting stem (3) is installed in the described cylinder body (1) by screw thread.
3. pressurized cylinder according to claim 2 is characterized in that: form cavity on the described insertion end end face of described abutting stem (3).
4. pressurized cylinder according to claim 3, it is characterized in that: being installed on the interior end end face of described cylinder body (1) of described abutting stem (3) forms the ventilation cavity that communicates with described cavity, be provided with Exhaust screw (6) in the described ventilation cavity, described Exhaust screw (6) is provided with housing pin (7).
5. the hydraulic control one-way valve with function of increasing pressure is characterized in that: comprise
Hydraulic control part, described hydraulic control partly comprise valve body (8), are provided with cavity of resorption passage that is communicated with the column cavity of resorption and first inlet and the epicoele passage that is communicated with the column epicoele and second inlet in the described valve body (8); And be arranged on hydraulic control one-way valve (9) on the described cavity of resorption passage, and the outlet end of described hydraulic control one-way valve (9) is communicated with described column cavity of resorption, and liquid feeding end is communicated with described first inlet, and control end is communicated with described second inlet;
The supercharging part, described supercharging partly comprises as each described pressurized cylinder among the claim 1-4, the pipeline that the large tracts of land chamber (5) of described pressurized cylinder is communicated with described first inlet, by the unidirectional feed liquor pipeline of described first inlet to the unidirectional feed liquor in the small size chamber (4) of described pressurized cylinder, and by the unidirectional fluid pipeline of described small size chamber (4) to the unidirectional fluid of described column cavity of resorption.
6. the hydraulic control one-way valve of band function of increasing pressure according to claim 5, it is characterized in that: described valve body (8) is provided with screwed hole with the end face that described supercharging partly is connected, the relevant position of described supercharging part is provided with the through hole of cooperation, by connecting screw rod (10) is set in described through hole and screwed hole described hydraulic control part partly is connected with described supercharging.
7. the hydraulic control one-way valve of band function of increasing pressure according to claim 6, it is characterized in that: described screwed hole communicates with described column cavity of resorption, the end of thread of described connecting screw rod (10) is provided with the blind hole of axial direction, the outer wall of described connecting screw rod (10) is provided with the liquid-through hole that communicates with described blind hole, the described screwed hole of described unidirectional drain pipe route, the blind hole that communicates with described screwed hole, described liquid-through hole is communicated with described small size chamber (4), the connecting pipeline which is provided with first one way valve (16) constitutes, the liquid feeding end of described first one way valve (16) communicates with described small size chamber (4), and outlet end communicates with described column cavity of resorption.
8. the hydraulic control one-way valve of band function of increasing pressure according to claim 7, it is characterized in that: described unidirectional feed liquor pipeline constitutes for the pipeline that is provided with second one way valve (17), the liquid feeding end of described second one way valve (17) communicates with first inlet, and outlet end communicates with described small size chamber (4).
9. the hydraulic control one-way valve of band function of increasing pressure according to claim 7, it is characterized in that: form the column cavity of resorption fast interface (11) and the first inlet fast interface (12) on the two ends port of described cavity of resorption passage respectively, and form the column epicoele fast interface (13) and the second inlet fast interface (14) on the two ends port of described epicoele passage respectively.
10. the hydraulic control one-way valve of band function of increasing pressure according to claim 9 is characterized in that: also be provided with satellite interface (15) on the described valve body (8), described satellite interface (15) is communicated with described column cavity of resorption by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201030891U CN201771519U (en) | 2010-01-28 | 2010-01-28 | Hydraulic control one-way valve with pressurization function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201030891U CN201771519U (en) | 2010-01-28 | 2010-01-28 | Hydraulic control one-way valve with pressurization function |
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| Publication Number | Publication Date |
|---|---|
| CN201771519U true CN201771519U (en) | 2011-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201030891U Expired - Lifetime CN201771519U (en) | 2010-01-28 | 2010-01-28 | Hydraulic control one-way valve with pressurization function |
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| CN (1) | CN201771519U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748041A (en) * | 2012-07-04 | 2012-10-24 | 巨隆集团芜湖兴隆液压有限公司 | Nitrogen safety valve for hydraulic support in coal mine fully mechanized mining |
| CN109707417A (en) * | 2019-01-07 | 2019-05-03 | 胡连太 | A kind of supercharging device and boosting method suitable for underground mine hydraulic prop |
-
2010
- 2010-01-28 CN CN2010201030891U patent/CN201771519U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748041A (en) * | 2012-07-04 | 2012-10-24 | 巨隆集团芜湖兴隆液压有限公司 | Nitrogen safety valve for hydraulic support in coal mine fully mechanized mining |
| CN109707417A (en) * | 2019-01-07 | 2019-05-03 | 胡连太 | A kind of supercharging device and boosting method suitable for underground mine hydraulic prop |
| CN109707417B (en) * | 2019-01-07 | 2020-03-13 | 胡连太 | Supercharging device and method suitable for individual hydraulic prop of underground coal mine |
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Owner name: ANHUI FAN'ER ELECTROHYDRAULIC TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: HU BINJIE Effective date: 20121207 |
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Free format text: CORRECT: ADDRESS; FROM: 325604 WENZHOU, ZHEJIANG PROVINCE TO: 325600 WENZHOU, ZHEJIANG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20121207 Address after: 325600 second industrial zone, seven Li port, Zhejiang, Yueqing, China Patentee after: Anhui Fan'er Electrohydraulic Technology Co., Ltd. Address before: 325604 second industrial zone, seven Li port, Zhejiang, Yueqing, China Patentee before: Hu Binjie |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Valve Machinery Group Co., Ltd. Assignor: Anhui Fan'er Electrohydraulic Technology Co., Ltd. Contract record no.: 2012340000393 Denomination of utility model: Hydraulic control one-way valve with pressurization function Granted publication date: 20110323 License type: Exclusive License Record date: 20121231 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
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Owner name: VALVE MACHINERY GROUP CO., LTD. Free format text: FORMER OWNER: ANHUI FAN'ER ELECTROHYDRAULIC TECHNOLOGY CO., LTD. Effective date: 20130412 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Free format text: CORRECT: ADDRESS; FROM: 325600 WENZHOU, ZHEJIANG PROVINCE TO: 241100 WUHU, ANHUI PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20130412 Address after: 241100 Anhui Province, Wuhu City Economic Development Zone, Wuhu Patentee after: Valve Machinery Group Co., Ltd. Address before: 325600 second industrial zone, seven Li port, Zhejiang, Yueqing, China Patentee before: Anhui Fan'er Electrohydraulic Technology Co., Ltd. |
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