CN202852060U - Mixed tap with increased resistance orifice plate - Google Patents
Mixed tap with increased resistance orifice plate Download PDFInfo
- Publication number
- CN202852060U CN202852060U CN 201220506118 CN201220506118U CN202852060U CN 202852060 U CN202852060 U CN 202852060U CN 201220506118 CN201220506118 CN 201220506118 CN 201220506118 U CN201220506118 U CN 201220506118U CN 202852060 U CN202852060 U CN 202852060U
- Authority
- CN
- China
- Prior art keywords
- water
- orifice plate
- hot
- cold water
- cold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
Abstract
The utility model discloses a mixed tap with an increased resistance orifice plate. The mixed tap with the increased resistance orifice plate comprises a cold water inlet seal connecting pipe bolt. A water inlet of the cold water inlet seal connecting pipe bolt is provided with an increased resistance orifice plate mounting groove, and the increased resistance orifice plate is arranged inside the increased resistance orifice plate mounting groove. Due to the fact that the increased resistance orifice plate is arranged in the water inlet of the cold water inlet seal connecting pipe bolt, the phenomenon that a water heater is fire out or stops heating when mixed hot and cold water is cooled during being used by users can be effectively avoided, and the users are enabled to use an extremely low replacement cost to reach an efficacy of the existing thermostat water heater. Meanwhile, the mixed tap with the increased resistance orifice plate has the advantages of being simple in structure, easy to achieve, higher in generality, and capable of widely being used in electric water heaters, gas water heaters and solar water heaters.
Description
Technical field
The utility model relates to a kind of water tap, relates in particular to a kind of combustion taps that increases the resistance orifice plate that is provided with.
Background technique
At present, water heater is used widely in China.Water heater mainly is divided into four kinds of electric water heater, gas water-heater, solar water heater and air-source water heaters.Electric water heater is divided into again instant electric water heater and quick-heating electric water heater.Early stage water heater mostly is greatly non-thermostatic type water heater, comprise gas water-heater, instant electric water heater and quick-heating electric water heater, they all are the hot water of output high-temperature from the hot-water line of water heater, use combustion taps mixing hot and cold water by the user, until the current that output temperature is fit to.
Existing combustion taps comprises the cold and hot water yield adjusting mixing valve assemblying body that is provided with valve regulating handle, the two ends that the cold and hot water yield is regulated mixing valve assemblying body inner spool are tightly connected into water sealed joint pipe bolt by the water inlet sealing gasket respectively, the other end of water inlet sealed joint pipe bolt is plugged in the loose joint nut, and by loose joint sealing gasket be tightly connected cold water pipe and hot-water line, also are furnished with two trims on the loose joint nut.Existing combustion taps major part all only has a spool, the import of spool two ends is connected cold water pipe and the hot-water line (combustion taps that two a small amount of spools are also arranged by water inlet sealed joint pipe bolt respectively with the loose joint nut, the water tap of its working principle and a spool is similar), this spool should be used for regulating hot water or cold water's combined amount, also is used for adjusting simultaneously hot water or cold water's flow.The minority combustion taps is also arranged, do not have mixed valve core, only have cold water modulating valve and hot water modulating valve, the combined amount that the user can regulate hot and cold water by cold water modulating valve and hot water modulating valve.This combustion taps also is to connect modulating valve valve body and intake pipe by water inlet sealed joint pipe bolt.
Use in the non-constant temp gas water heater process, when hot and cold water mixed, cold water pipe and hot-water line were communicated with.Because the resistance of heating pipe is large, the drag overall that has increased the hot-water line pipeline, and the drag overall of cold water pipe pipeline has so just caused the hot water flow minimizing much smaller than hot-water line.When the flow of hot water during less than a certain limiting value, the water temperature in the heating tube of gas water heater can rise to the limit value of gas water-heater.At this moment, the automatic safety device in the gas water-heater can cut off the supply of combustion gas, makes the gas water-heater self-extinguishing.
In using non-thermostatic gas water heater process, also there is the another one problem; the part water heater is arranged when opening hot water separately; when hot water flow during less than a certain limiting value; water temperature in the heating tube of gas water heater can reach the limiting temperature of water heater; the automatic safety device of gas water-heater can cut off the supply of combustion gas, makes the gas water-heater self-extinguishing.The non-thermostatic type water heater of part is arranged, and when the flow of hot water during greater than a certain limiting value, the water temperature in the heating tube of gas water heater is lower than the temperature that water heater limits, and the automatic control device of water heater also can cut off combustion gas, makes the gas water-heater self-extinguishing.
When using non-thermostatic type instant electric water heater, the phenomenon of electric water heater stopped heating also can appear, and reason is identical with the non-thermostatic gas water heater of use, does not repeat them here.
Therefore, existing non-thermostatic gas water heater and non-thermostatic type instant electric water heater can fire extinguishing or stopped heating phenomenon occur in multiple situation when cooperating existing combustion taps to use, and it is very inconvenient to use.
At present, a large amount of thermostatic gas water heaters or thermostatic type electric water heater have also appearred on the market, the temperature output hot water that water heater can directly be set according to the user, but solution is fire extinguishing or the stopped heating phenomenon of thermostatic type water heater appearance by no means, but its internal structure is complicated, the probability that breaks down is high, and expensive.Instruct using method by producer, thermostatic type water heater need not mixing hot and cold water in use.But in actual use, owing to changing combustion gas gas kind, the phenomenon that can't use because of water temperature over-high also can occur, the user must reduce water temperature by mixing hot and cold water.In mixing hot and cold water process, fire extinguishing or stopped heating phenomenon also can appear in thermostatic type water heater, and reason is identical with the non-thermostatic type water heater of use, does not repeat them here.
The model utility content
The purpose of this utility model provides a kind of combustion taps that increases the resistance orifice plate that is provided with, can cooperate non-thermostatic gas water heater, non-thermostatic instant heating formula electric water heater and non-constant temperature quick-heating electric water heater to use, avoid occurring fire extinguishing or stopped heating phenomenon, simultaneously also can avoid the user to use in constant temp gas water heater and the thermostatic electric water heater process, the fire extinguishing that when the mixing hot and cold water for cooling, occurs or stopped heating phenomenon, user-friendly, also can finish existing Thermostatic water heaters effect with extremely low replacement cost.
The utility model adopts following technical proposals:
A kind of combustion taps that increases the resistance orifice plate that is provided with comprises cold water water inlet sealed joint pipe bolt, and described cold water water inlet sealed joint pipe bolt water intake is provided with and increases resistance orifice plate mounting groove, increases to be provided with in the resistance orifice plate mounting groove to increase the resistance orifice plate.
Also comprise the cold and hot water yield adjusting mixing valve assemblying body that is provided with valve regulating handle, the cold and hot water yield is regulated the hot water feed-water end of mixing valve assemblying body inner spool and cold water feed-water end respectively by hot-water line water inlet sealing gasket and cold water pipe water inlet sealing gasket be tightly connected hot water water inlet sealed joint pipe bolt and cold water water inlet sealed joint pipe bolt, be connected with the cold water the other end of sealed joint pipe bolt of hot water water inlet sealed joint pipe bolt is connected hot-water line and cold water pipe by hot water loose joint nut with cold water loose joint nut respectively, hot water intake sealed joint pipe bolt and hot-water line, be provided with the loose joint sealing gasket between cold water water inlet sealed joint pipe bolt and the cold water pipe.
Also comprise cold water modulating valve and hot water modulating valve, the cold water feed-water end of cold water modulating valve is by the cold water pipe water inlet sealing gasket cold water water inlet sealed joint pipe bolt that is tightly connected, the hot water feed-water end of hot water modulating valve is by the hot-water line water inlet sealing gasket hot water water inlet sealed joint pipe bolt that is tightly connected, be connected with the hot water the other end of sealed joint pipe bolt of cold water water inlet sealed joint pipe bolt is connected cold water pipe and hot-water line by cold water loose joint nut with hot water loose joint nut respectively, cold water intake sealed joint pipe bolt and cold water pipe, be provided with the loose joint sealing gasket between hot water water inlet sealed joint pipe bolt and the hot-water line.
The described perforate internal diameter that increases the resistance orifice plate is 8mm-2mm.
Described hot water water inlet sealed joint pipe bolt water intake is provided with limit flow orifice plate mounting groove, is provided with the limit flow orifice plate in the limit flow orifice plate mounting groove.
The perforate internal diameter of described limit flow orifice plate is 9mm-6mm, and the perforate internal diameter of described limit flow orifice plate is greater than the perforate internal diameter that increases the resistance orifice plate.
Be provided with trim on described hot water loose joint nut and the cold water loose joint nut.
Seal face between described hot water water inlet sealed joint pipe bolt and the hot water loose joint nut and the seal face between cold water water inlet sealed joint pipe bolt and the cold water loose joint nut are sphere.
Seal face between described hot water water inlet sealed joint pipe bolt and the hot water loose joint nut and the seal face between cold water water inlet sealed joint pipe bolt and the cold water loose joint nut are the plane.
The utility model is by increasing the resistance orifice plate in the setting of cold water water inlet sealed joint pipe bolt water intake, can effectively avoid the user phenomenon of water heater fire extinguishing or stopped heating when the mixing hot and cold water for cooling, to occur, can make the user reach existing thermostatic type water heater effect with extremely low replacement cost, the utility model is simple in structure simultaneously, be easy to realize, have very high versatility, can be widely used in electric water heater, gas water-heater and solar water heater.
Description of drawings
Fig. 1 is that seal face is the model utility embodiment's 1 on plane structural representation;
Fig. 2 is that seal face is the model utility embodiment's 1 of sphere structural representation;
Fig. 3 is that seal face is the model utility embodiment's 2 on plane structural representation;
Fig. 4 is that seal face is the model utility embodiment's 2 of sphere structural representation.
Embodiment
The utility model comprises cold water water inlet sealed joint pipe bolt 8, and cold water water inlet sealed joint pipe bolt 8 water intakes are provided with and increase resistance orifice plate mounting groove, increases to be provided with in the resistance orifice plate mounting groove to increase resistance orifice plate 6.
Embodiment 1:
As shown in Figure 1, the utility model comprises the cold and hot water yield adjusting mixing valve assemblying body 4 that is provided with valve regulating handle 7, the cold and hot water yield is regulated mixing valve assemblying body 4 two ends respectively by hot-water line water inlet sealing gasket 2 and cold water pipe water inlet sealing gasket 9 be tightly connected hot water water inlet sealed joint pipe bolt 1 and cold water water inlet sealed joint pipe bolt 8, the other end of hot water water inlet sealed joint pipe bolt 1 and cold water water inlet sealed joint pipe bolt 8 is pegged graft with hot-water line loose joint nut 3 and cold water pipe loose joint nut 10 respectively, and by loose joint sealing gasket connection hot-water line and cold water pipe, the loose joint sealing gasket is used for the sealing between water inlet sealed joint pipe bolt and the intake pipe.The utility model increases resistance orifice plate mounting groove in the 8 water intake settings of cold water water inlet sealed joint pipe bolt, increases to be provided with in the resistance orifice plate mounting groove to increase resistance orifice plate 6, and the perforate internal diameter that increases resistance orifice plate 6 is 8mm-2mm.Further, the utility model also can arrange limit flow orifice plate mounting groove at hot water sealed joint pipe bolt 1 water intake of intaking, be provided with limit flow orifice plate 5 in the limit flow orifice plate mounting groove, the perforate internal diameter of limit flow orifice plate 5 is 9mm-6mm, and greater than the perforate internal diameter that increases resistance orifice plate 6; Be provided with trim on hot-water line loose joint nut 3 and the cold water pipe loose joint nut 10.
As shown in Figure 1, hot water water inlet sealed joint pipe bolt 1 is all the same with the existing combustion taps in market with seal face 11 and the seal face 12 between cold water water inlet sealed joint pipe bolt 8 and the cold water loose joint nut 10 between the hot water loose joint nut 3, the employing plane.
As shown in Figure 2, the seal face 12 between the seal face 11 between hot water water inlet sealed joint pipe bolt 1 and the hot water loose joint nut 3 and cold water water inlet sealed joint pipe bolt 8 and the cold water loose joint nut 10 adopts sphere.Hot water loose joint nut 3 and cold water loose joint nut 10 are in installation process like this, and the direction of its center line can be regulated automatically with the center line of heat, cold water pipe, thereby avoids mutually interfering with the outside thread that docks cool and hot water pipe, cause difficulty is installed.
Embodiment 2:
As shown in Figure 3, the utility model comprises cold water modulating valve 14 and hot water modulating valve 13, the cold water feed-water end of cold water modulating valve 14 is by the cold water pipe water inlet sealing gasket 9 cold water water inlet sealed joint pipe bolt 8 that is tightly connected, the hot water feed-water end of hot water modulating valve 13 is by the hot-water line water inlet sealing gasket 2 hot water water inlet sealed joint pipe bolt 1 that is tightly connected, the other end of cold water water inlet sealed joint pipe bolt 8 and hot water water inlet sealed joint pipe bolt 1 is pegged graft with cold water loose joint nut 10 and hot water loose joint nut 3 respectively, and by loose joint sealing gasket connection cold water pipe and hot-water line, the loose joint sealing gasket is used for the sealing between water inlet sealed joint pipe bolt and the intake pipe.The utility model increases resistance orifice plate mounting groove in the 8 water intake settings of cold water water inlet sealed joint pipe bolt, increases to be provided with in the resistance orifice plate mounting groove to increase resistance orifice plate 6, and the perforate internal diameter that increases resistance orifice plate 6 is 8mm-2mm.Further, the utility model also can arrange limit flow orifice plate mounting groove at hot water sealed joint pipe bolt 1 water intake of intaking, be provided with limit flow orifice plate 5 in the limit flow orifice plate mounting groove, the perforate internal diameter of limit flow orifice plate 5 is 9mm-6mm, and greater than the perforate internal diameter that increases resistance orifice plate 6; Be provided with trim on hot-water line loose joint nut 3 and the cold water pipe loose joint nut 10.
As shown in Figure 3, hot water water inlet sealed joint pipe bolt 1 is all the same with the existing combustion taps in market with seal face 11 and the seal face 12 between cold water water inlet sealed joint pipe bolt 8 and the cold water loose joint nut 10 between the hot water loose joint nut 3, the employing plane.
As shown in Figure 4, the seal face 12 between the seal face 11 between hot water water inlet sealed joint pipe bolt 1 and the hot water loose joint nut 3 and cold water water inlet sealed joint pipe bolt 8 and the cold water loose joint nut 10 adopts sphere.Hot water loose joint nut 3 and cold water loose joint nut 10 are in installation process like this, and the direction of its center line can be regulated automatically with the center line of heat, cold water pipe, thereby avoids mutually interfering with the outside thread that docks cool and hot water pipe, cause difficulty is installed.
The utility model increases resistance orifice plate 6 by setting, and the drag overall of cold water pipe pipeline and the drag overall of hot-water line pipeline are approached, and so just can avoid causing water heater self-extinguishing or stopped heating because hot water flow reduces.
The utility model is by arranging limit flow orifice plate 5, makes the hot water peak rate of flow after the restriction be slightly less than water heater peak rate of flow limit value, can avoid causing because the flow of hot water is excessive water heater self-extinguishing or stopped heating.Simultaneously, the user is in use for guaranteeing that normal use is certain to control water heater certain hot water effluent's amount is arranged, can not be transferred to hot water effluent amount low and cause water heater fire extinguishing or stopped heating, therefore can avoid because of excessively low gas water-heater self-extinguishing or the stopped heating of causing of hot water flow.
The utility model can be avoided causing water heater fire extinguishing or stopped heating phenomenon because of user's mixing hot and cold water for cooling when being applicable to thermostatic gas water heater or thermostatic type electric water heater equally.
When the utility model is used for solar water heater, can reach the effect of common combustion taps, user-friendly.
The utility model and existing non-thermostatic gas water heater and non-thermostatic type instant electric water heater are used in conjunction with, can avoid water heater the phenomenon of fire extinguishing or stopped heating to occur.The user of the non-thermostatic type water heater of existing use only need change the combustion taps that increases the resistance orifice plate that is provided with described in the utility model, can reach the using effect identical with thermostatic type water heater.Compare with changing thermostatic type water heater, greatly reduced replacement cost, also can reduce the probability that water heater breaks down, reduced family's expenditure.
Claims (9)
1. one kind is provided with the combustion taps that increases the resistance orifice plate, comprises cold water water inlet sealed joint pipe bolt, it is characterized in that: described cold water water inlet sealed joint pipe bolt water intake is provided with and increases resistance orifice plate mounting groove, increases to be provided with in the resistance orifice plate mounting groove to increase the resistance orifice plate.
2. according to claim 1 being provided with increases the combustion taps that hinders orifice plate, it is characterized in that: also comprise the cold and hot water yield adjusting mixing valve assemblying body that is provided with valve regulating handle, the cold and hot water yield is regulated the hot water feed-water end of mixing valve assemblying body inner spool and cold water feed-water end respectively by hot-water line water inlet sealing gasket and cold water pipe water inlet sealing gasket be tightly connected hot water water inlet sealed joint pipe bolt and cold water water inlet sealed joint pipe bolt, be connected with the cold water the other end of sealed joint pipe bolt of hot water water inlet sealed joint pipe bolt is connected hot-water line and cold water pipe by hot water loose joint nut with cold water loose joint nut respectively, hot water intake sealed joint pipe bolt and hot-water line, be provided with the loose joint sealing gasket between cold water water inlet sealed joint pipe bolt and the cold water pipe.
3. according to claim 1 being provided with increases the combustion taps that hinders orifice plate, it is characterized in that: also comprise cold water modulating valve and hot water modulating valve, the cold water feed-water end of cold water modulating valve is by the cold water pipe water inlet sealing gasket cold water water inlet sealed joint pipe bolt that is tightly connected, the hot water feed-water end of hot water modulating valve is by the hot-water line water inlet sealing gasket hot water water inlet sealed joint pipe bolt that is tightly connected, be connected with the hot water the other end of sealed joint pipe bolt of cold water water inlet sealed joint pipe bolt is connected cold water pipe and hot-water line by cold water loose joint nut with hot water loose joint nut respectively, cold water intake sealed joint pipe bolt and cold water pipe, be provided with the loose joint sealing gasket between hot water water inlet sealed joint pipe bolt and the hot-water line.
According to claim 2 or 3 described are provided with increase the resistance orifice plate combustion tapss, it is characterized in that: described increase the resistance orifice plate the perforate internal diameter be 8mm-2mm.
5. according to claim 4 being provided with increases the combustion taps that hinders orifice plate, it is characterized in that: described hot water water inlet sealed joint pipe bolt water intake is provided with limit flow orifice plate mounting groove, is provided with the limit flow orifice plate in the limit flow orifice plate mounting groove.
6. according to claim 5 being provided with increases the combustion taps that hinders orifice plate, and it is characterized in that: the perforate internal diameter of described limit flow orifice plate is 9mm-6mm, and the perforate internal diameter of described limit flow orifice plate is greater than the perforate internal diameter that increases the resistance orifice plate.
7. the combustion taps that increases the resistance orifice plate that is provided with according to claim 6 is characterized in that: be provided with trim on described hot water loose joint nut and the cold water loose joint nut.
8. according to claim 7 being provided with increases the combustion taps that hinders orifice plate, it is characterized in that: the seal face between described hot water water inlet sealed joint pipe bolt and the hot water loose joint nut and the seal face between cold water water inlet sealed joint pipe bolt and the cold water loose joint nut are sphere.
9. according to claim 7 being provided with increases the combustion taps that hinders orifice plate, it is characterized in that: the seal face between described hot water water inlet sealed joint pipe bolt and the hot water loose joint nut and the seal face between cold water water inlet sealed joint pipe bolt and the cold water loose joint nut are the plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220506118 CN202852060U (en) | 2012-08-06 | 2012-09-29 | Mixed tap with increased resistance orifice plate |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220385230.0 | 2012-08-06 | ||
| CN201220385230 | 2012-08-06 | ||
| CN 201220506118 CN202852060U (en) | 2012-08-06 | 2012-09-29 | Mixed tap with increased resistance orifice plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202852060U true CN202852060U (en) | 2013-04-03 |
Family
ID=47983265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220506118 Expired - Lifetime CN202852060U (en) | 2012-08-06 | 2012-09-29 | Mixed tap with increased resistance orifice plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202852060U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014015750A1 (en) * | 2012-07-23 | 2014-01-30 | 河南五建建设集团有限公司 | A water supply system of water heater with anti-fire extinguishing function |
| CN105179836A (en) * | 2015-07-20 | 2015-12-23 | 广东美的暖通设备有限公司 | Loose joint nut combined piece, manufacturing method thereof and air conditioner with same |
-
2012
- 2012-09-29 CN CN 201220506118 patent/CN202852060U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014015750A1 (en) * | 2012-07-23 | 2014-01-30 | 河南五建建设集团有限公司 | A water supply system of water heater with anti-fire extinguishing function |
| CN105179836A (en) * | 2015-07-20 | 2015-12-23 | 广东美的暖通设备有限公司 | Loose joint nut combined piece, manufacturing method thereof and air conditioner with same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203824042U (en) | Hot water system | |
| CN101701730B (en) | Two-stage circulation and two-stage water distribution heat supply device | |
| CN102384589A (en) | Temperature regulating system of water heater blended with cold and hot water | |
| CN203605487U (en) | Solar water heating system with auxiliary gas heating function | |
| CN202875180U (en) | Intelligent constant temperature shower control system | |
| CN202852077U (en) | Mixed tap with fine-tuning valve | |
| CN202852060U (en) | Mixed tap with increased resistance orifice plate | |
| CN202813785U (en) | Water heater water supply system with fire preventing and extinguishing functions | |
| CN206207547U (en) | A kind of intelligent temperature control water admixing center | |
| CN204902199U (en) | Fire electric heat water system | |
| CN216114719U (en) | Joint for reducing water cut-off temperature rise and gas quick water heater | |
| CN201582903U (en) | Secondary circulating and secondary water segregating ground heating device | |
| CN203549975U (en) | Isolated heat exchange device | |
| CN203533814U (en) | Flow homogenizer of water cycle central air conditioner | |
| CN207122947U (en) | Split type step cycle heating system | |
| CN204438544U (en) | A kind of combined type water heater | |
| CN102829550B (en) | Method and tap for preventing shutdown of water heater from shutdown | |
| CN202304002U (en) | Instant solar water heater | |
| CN201787736U (en) | Cold and hot water-mixing temperature regulation system for water heaters | |
| CN201166145Y (en) | Tee electrothermic executing valve and ground warming water mixing apparatus | |
| CN201599456U (en) | Constant pressure type thermostatic valve assembly | |
| CN204373228U (en) | A kind of fire power regulator for gas heater of water | |
| CN102278822A (en) | Solar water heater with gas water heater | |
| CN102519147A (en) | Solar water heater with quick-heating water heater | |
| CN201521695U (en) | Tap |
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: ZHANG DESHANG Free format text: FORMER OWNER: XIA GONGCHENG Effective date: 20130529 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130529 Address after: 450007 No. 100 Jianshe West Road, Henan, Zhengzhou Patentee after: HENAN WUJIAN CONSTRUCTION GROUP Co.,Ltd. Patentee after: Zhang Deshang Address before: 450007 No. 100 Jianshe West Road, Henan, Zhengzhou Patentee before: Henan Wujian Construction Group Co.,Ltd. Patentee before: Xia Gongcheng |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130403 |