CN201164353Y - Flip type electric pressure cooker - Google Patents
Flip type electric pressure cooker Download PDFInfo
- Publication number
- CN201164353Y CN201164353Y CNU2007201589589U CN200720158958U CN201164353Y CN 201164353 Y CN201164353 Y CN 201164353Y CN U2007201589589 U CNU2007201589589 U CN U2007201589589U CN 200720158958 U CN200720158958 U CN 200720158958U CN 201164353 Y CN201164353 Y CN 201164353Y
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- Prior art keywords
- pole plate
- electric pressure
- flip
- capacitance sensor
- cooking saucepan
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- 238000010411 cooking Methods 0.000 claims abstract description 41
- 239000003990 capacitor Substances 0.000 claims abstract description 22
- 230000008859 change Effects 0.000 claims abstract description 14
- 238000006073 displacement reaction Methods 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 6
- 238000000926 separation method Methods 0.000 claims abstract description 5
- 230000033001 locomotion Effects 0.000 claims description 5
- 239000013536 elastomeric material Substances 0.000 claims description 3
- 235000013305 food Nutrition 0.000 abstract description 10
- 238000005485 electric heating Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 2
- 238000011897 real-time detection Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 10
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 101100298225 Caenorhabditis elegans pot-2 gene Proteins 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 235000016709 nutrition Nutrition 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model provides a flip type electric pressure cooker which comprises a shell body, an outer cooker, an inner cooker, a cooker cover and an obturating ring for sealing the inner cooker, an electric heating device arranged between the inner cooker and the outer cooker and a control circuit board, wherein, the cooker cover is articulated with the shell body, a locking mechanism of the cooker cover is matched with the outer cooker, a hole is arranged on the cooking cover for installing a steam separation sleeve, a steam-driven push rod and a capacitance sensor. The capacitance sensor comprises a first polar plate and a second polar plate, the steam-driven push rod generates the displacement due to the pressure change to drive the first polar plate, so as to ensure that the first polar plate and the second polar plate moves relatively, and the two polar plates are electrically connected with the control circuit board. The real-time detection and control and the continuous and adjustable pressure can be realized, different pressures or different working time can be selected according to the situations of different food during the cooking process. The capacitance sensor is also provided with a compensating capacitor, thereby well counteracting the extra capacitance value of the capacitance sensor generated by the temperature and the electromagnetic interference.
Description
Technical field
The utility model relates to a kind of electric pressure cooking saucepan, flip-shell electric pressure cooking saucepan that especially can be automatic pressure-controlled.
Background technology
At present, electric pressure cooking saucepan substitutes existing old-fashioned pressure cooker because it is energy-conservation, advantage fast, easily, becomes one of family kitchen daily electrical home appliance product.The electric pressure cooking saucepan of selling on the existing market is mainly containing two types aspect pressure control and the pressure adjusting.
First type is in the bottom of electric pressure cooking saucepan outer pot one flash switch to be set, and the heating plate setting can touch the feeler lever of flash switch break-make.Move up and down with the variation of internal pressure during pot work in utilizing and trigger or disconnect heater.When electric pressure cooking saucepan was worked, pot inner pressure raise, and heating plate is to bottom offset, and after pot inner pressure was raised to certain value, heating plate moved down and drives feeler lever shake-up flash switch, makes flash switch disconnect heater stop work; After pressure descended, heating plate drove feeler lever and leaves flash switch to top offset, flash switch closure, the work of conducting heater.Reach the purpose of controlled pressure pot internal pressure with this.
The patent No. of announcing as State Patent Office is: 91100026.7, and Granted publication day is in the patent of invention on June 23rd, 1993, discloses the hermetically sealed automatic electric heating pressure cooking appliance of a kind of family expenses.By rigid arm on the right cylinder and elastic arm, the pot cover and the pot body that will have sealing ring compress the realization sealing, have provided the Rational structure of the fully-sealed electric cooker elasticity closing and opening cover during booting of safe ready.Drive adjustable flash switch with elastic arm, control the heated condition of the electric hot plate between the bottom of a pan and the elastic arm, realize the adjustment of electric cooker internal pressure and control automatically, formed the ideal model of fully-sealed electric cooker.
The problem that the electric pressure cooking saucepan of the type exists is that pressure is unadjustable, is a fixed pressure value.When cooking different food, can only realize that the food of cooking out is relatively poor aspect the nutritional labeling of mouthfeel and reservation by the length of setting-up time.
Second type, be pot cover inside at electric pressure cooking saucepan, on the pot cover corresponding to interior pot top temperature sensor or pressure sensor are set, come variations in temperature or pressure in the perception pot to change, and signal is inputed to circuit detect control, that uses this control mode has the flip-shell electric pressure cooking saucepan, also the cap-rotating type electric pressure cooking saucepan is arranged.
Scheme for the working pressure sensor quits work when pot inner pressure reaches setup pressure value, and pressure restarts work when falling after rise.Shortcoming is monodrome or the several discontinuous force value of setting, and can not satisfy automatic pressure-controlled needs continuously, especially can not get rid of the influence of environment fully.
For the scheme of serviceability temperature sensor, need to gather earlier kettle temperature, with corresponding temperature transition the force value corresponding with this temperature value, owing to the weight of food, density, the composition difference that contained, also be not quite similar for the requirement of temperature.So the force value of temperature correspondence is incomplete same under different environment temperatures, environment atmospheric pressure and food, has influenced control accuracy and sensitivity.In addition, adopt the manufacturing cost of temperature sensor higher, be unfavorable for the popularization of electric pressure cooking saucepan.
Summary of the invention
In order to solve above-mentioned problems of the prior art, the utility model provides a kind of flip-shell electric pressure cooking saucepan, realized the real-time detection and the control of pressure, pressure is adjustable continuously, can select different pressure or working time according to the situation of different foods in the process of culinary art.
The main technical schemes that the utility model adopts is: a kind of flip-shell electric pressure cooking saucepan, comprise housing, outer pot, interior pot, the pot cover and the sealing ring of pot in the sealing, electric heater unit between interior pot and the outer pot, control circuit board, described pot cover and housing are hinged, the retaining mechanism of described pot cover cooperates with outer pot, it is characterized in that: the steam separation sleeve is installed in perforate on pot cover, the steam-operating push rod, capacitance sensor, described capacitance sensor comprises first pole plate, second pole plate, described steam-operating push rod is stressed and change produces displacement and drive first pole plate, make first pole plate and the second pole plate relative motion, described two pole plates are electrically connected with control circuit board.
The utility model also adopts following attached technical scheme:
Described capacitance sensor also has the building-out capacitor that the capacitance of capacitance and capacitance sensor takes place simultaneously, changes simultaneously when being subjected to temperature and electromagnetic interference;
Described building-out capacitor is to be close to capacitance sensor and independent the setting.
Described building-out capacitor comprises two pole plates, and one of them pole plate is first pole plate or second pole plate of described capacitance sensor;
Described first pole plate is corresponding with second pole plate, and described steam-operating push rod is stressed and change produces change in displacement, directly drives thus or drives described first pole plate indirectly with respect to the described second pole plate relative motion, with this capacitance signal that changes.
It is elastomeric material that the elastic device or the outer pot the bottom of a pan are set between the described heater and the outer pot the bottom of a pan.
The beneficial effect that adopts the utility model to bring:
(1) the utility model adopts capacitance sensor, utilizes the capacitance sensor that is provided with on the pot cover, and the variation of induction inner pot pressure produces displacement, gathers the capacitance that changes, and capacitance is carried out judgment processing, the work of control electric pressure cooking saucepan.The capacitance sensor that the utility model adopts realized capacitance with the variation of pressure real-time change, and set relatively capacitance of benchmark according to the capacitance of real-time change, judge with this whether pressure surpasses the force value that the user sets.The user can be according to the food situation of reality culinary art when the setting benchmark compares capacitance, the scope and the working time of real-time adjustment force value, utilize existing mature C PU control technology, can detect and realize control to multi-parameter information such as pressure, times, even make the controlling organization of " PTT " formula, with different food correspondences, realized the adjustable continuously of force value.Set different pressure for different food, better guaranteed the taste and the nutritional labeling of food.
(2) capacitance sensor good stability, the capacitance signal is reliable, the induction precision height.Bring the control of electric pressure cooking saucepan more accurate thus, precision is higher.
(3) the utility model is provided with building-out capacitor on the basis of capacitance sensor, building-out capacitor can respond in real time because the capacitance variations that factors such as temperature, electromagnetic interference produce, calculate by processing of circuit, can compensate the measured value of revising capacitance sensor, make by handling the variation that the measured value that calculates reflects displacement more accurately, be subjected to Effect of Environmental still less, improved pressure controlled accuracy and stability.
(4) the utility model is provided with leverage between the pole plate of steam-operating push rod and capacitance sensor, utilizes the amplification principle of lever to change distance between the capacitance sensor pole plate; The area that perhaps pole plate of capacitance sensor is provided with multilayer and increases pole plate amplifies capacitance at double, improves the sensitivity that detects.
(5) capacitance sensor is with low cost, simple in structure, is easy to produce in batches.
(6) steam-operating push rod of the present utility model can reset, and except utilizing own wt, also can utilize elastic component to directly act on the steam-operating push rod, perhaps utilizes between the pole plate of capacitance sensor elastic component is set, and makes pressure control more reliable and more stable.
Description of drawings
Fig. 1 is the utility model flip-shell electric pressure cooking saucepan schematic perspective view;
Fig. 2 is the utility model flip-shell electric pressure cooking saucepan first embodiment cut-away view;
Fig. 3 is the enlarged diagram at A position among Fig. 2;
Fig. 4 is the utility model flip-shell electric pressure cooking saucepan second embodiment cut-away view;
Fig. 5 is the enlarged diagram at B position among Fig. 4;
Fig. 6 the utility model flip-shell electric pressure cooking saucepan the 3rd embodiment cut-away view;
Fig. 7 is the enlarged diagram at C position among Fig. 6;
Fig. 8 is the utility model flip-shell electric pressure cooking saucepan the 4th embodiment cut-away view;
Fig. 9 is the enlarged diagram at D position among Fig. 8;
Figure 10 is the circuit diagram of the utility model control circuit;
The label of component names correspondence is as follows among the figure:
1, outer pot; 2, interior pot; 3, pot cover; 4, electric heating plate; 5, leaf spring; 6, steam separation sleeve; 7, pressure limiting valve; 8, capacitance sensor; 9, building-out capacitor; 10, control circuit board; 11, sealing ring; 12, displacement guide rod; 13, leverage; 16, handle; 17, housing; 18, signal wire harness; 19, hinged place; 20, steam-operating push rod; 21, pot tooth; 22, back-moving spring; 23, spring; 31, opening device; 32, retaining mechanism; 81, capacitance sensor first pole plate; 82, capacitance sensor second pole plate; 91, building-out capacitor first pole plate; 92, building-out capacitor second pole plate;
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed description:
Embodiment one:
As Fig. 1, Fig. 2, shown in Figure 3, the first kind of flip-shell electric pressure cooking saucepan that provides for the utility model, comprise housing 17, outer pot 1, interior pot 2, the pot cover 3 and sealing ring 11 of pot 2 in the sealing, in electric heating plate 4 and U-shaped leaf spring 5 be set between pot 2 and the outer pot 1, pressure limiting valve 7, place the control circuit board 10 of housing 17 bottoms, described pot cover 3 and housing 17 hinged formation flip structures, the retaining mechanism 32 of described pot cover 3 cooperates with the pot tooth 21 of outer pot 1, the steam separation sleeve 6 of silica gel material is installed in perforate on pot cover 3, steam-operating push rod 20, capacitance sensor 8, described capacitance sensor 8 comprises first pole plate 81, second pole plate 82, described steam-operating push rod 20 is stressed and change produces displacement and drive first pole plate 81, make first pole plate 81 and 82 relative motions of second pole plate, described two pole plates are electrically connected with control circuit board 10.
The capacitance sensor 8 of present embodiment also has the building-out capacitor 9 that the capacitance of capacitance and capacitance sensor 8 takes place simultaneously, changes simultaneously when being subjected to temperature and electromagnetic interference, capacitance sensor 8 is a composite construction with building-out capacitor 9, building-out capacitor 9 comprises two pole plates, and wherein building-out capacitor 9 second pole plates 92 are second pole plate 82 of capacitance sensor 8.During work, steam-operating push rod 20 is stressed to change and produces change in displacement, directly driving first pole plate 81 moves in opposite directions with respect to second pole plate 82, distance between the minimizing and second pole plate 82, with this capacitance signal that changes, as shown in Figure 2, the capacitance measurement signal passes pot cover 3 and housing 17 hinged places 19 by the signal wire harness and is connected with the control circuit board 10 of placing housing 17 bottoms.As shown in figure 10, building-out capacitor 9 can respond in real time because the capacitance variations that factors such as temperature, electromagnetic interference produce, calculate by processing of circuit, can compensate the measured value of revising capacitance sensor 8, make by handling the variation that the measured value that calculates reflects displacement more accurately, be subjected to Effect of Environmental still less, improved pressure controlled accuracy and stability.
In the present embodiment, for the ease of attractive in appearance and convenient installation, capacitance sensor 8 is placed in the handle 16 of pot cover 3, and help avoiding extraneous interference, for compact conformation, steam-operating push rod 20, capacitance sensor 8, building-out capacitor 9 can be installed on the single piece of making in the support as shown in Figure 3, be fixed on the pot cover, corresponding interior pot sealed space.In addition, the steam-operating push rod 20 and first pole plate 81 are made integral piece, promptly utilize the end face of steam-operating push rod 20 or applicator surface as pole plate.Except as shown in Figure 3, also capacitance sensor 8 first pole plates 81 can be moved, two pole plates of capacitance sensor 8 second pole plates 82 and building-out capacitor 9 are static with respect to support, can certainly be shared first pole plates 81, and promptly two of building-out capacitor 9 pole plates are mobile with respect to support.
In the present embodiment, electric heater unit is a cast aluminium electric heating plate 4, also can be electromagnetic coil assembly; So-called steam-operating push rod 20 can be understood like this: be because of the pot cover perforate, pot strengthens its airtight steam pressure in the heating, just produce displacement as stressed member, when reducing, pressure can utilize steam-operating push rod 20 own wts, also can utilize elastic component to directly act on steam-operating push rod 20, perhaps utilize between the pole plate of capacitance sensor spring 23 be set, make reset more reliable and more stable.The steam-operating push rod 20 and first pole plate 81 are fixed together, and by first pole plate 81 and second pole plate 82 spring 23 are set like this, and steam-operating push rod 20 is resetted, and improve certainty of measurement.Because the U-shaped leaf spring 5 between " people " font sealing ring 11 and interior pot 2 and the outer pot 1 is set, realized " moving seam formula release ", become independently safety guarantee.Pressure limiting valve 7 on the pot cover 3 also can be laid down pot inner pressure by mode such as lose heart and prevent that quick-fried pot is dangerous when pot inner pressure reaches the dangerous pressure value.In the present embodiment on the pot cover retaining mechanism 32 fasten with outer pot pot tooth 21, and this technology of opening device is set is techniques well known, can certainly be the locking device that is equal to, for example at the interior pot locking device of the Chinese publication document ZL03130103.7 electric pressure cooking saucepan that has disclosed.Renovating in the present embodiment connect and opening device also to belong to this technology be techniques well known, the patent No. of announcing as State Patent Office is: 200520054990.3, Granted publication day is in the utility model patent on March 22nd, 2006, discloses the flip-shell electric pressure cooking saucepan.
Embodiment two:
As Fig. 4, shown in Figure 5, for realizing the structure chart of the utility model second embodiment.Be that with the difference of first embodiment capacitance sensor 8 and building-out capacitor 9 are provided with for independent, the position is near so that obtain compensation effect preferably, and passes pot cover 3 by signal wire harness 18 respectively and be connected with the control circuit board 10 of housing 17 hinged places 19 with placement housing 17 bottoms.In addition, described outer pot 1 the bottom of a pan is an elastomeric material, can realize " moving seam formula release " equally, becomes independently safety guarantee.
Embodiment three:
As Fig. 6, shown in Figure 7, for realizing the structure chart of the utility model the 3rd embodiment.Be that with the difference of first embodiment steam-operating push rod 20 drives first pole plate 81 indirectly, for example between the steam-operating push rod 20 and first pole plate 81 leverage 13, displacement guide rod 12 are set, when steam-operating push rod 20 moves up and down, displacement drives leverage 13 drives first pole plate 81 and moves up and down.Can also utilize the amplification principle of lever to drive distance between the capacitance sensor pole plate; Amplify capacitance at double, improve the sensitivity that detects.Because of the upper end of steam-operating push rod 20 also is provided with back-moving spring, steam-operating push rod 20 is resetted, improve certainty of measurement.
Embodiment four:
As Fig. 8, shown in Figure 9, for realizing the structure chart of the utility model the 4th embodiment.Be not adopt leverage 13 with the difference of the 3rd embodiment, it or not the distance that changes capacitance sensor 8 first pole plates 81 and second utmost point, but plate steam-operating push rod 20 is loaded on pot cover 3 sides, drive first pole plate 81, change the effective corresponding area between first pole plate 81 and second pole plate 82, with this capacitance signal that changes.
Control circuit in each embodiment that the utility model provides, as shown in figure 10, capacitance sensor 8 and building-out capacitor 9 input to the capacitance signal of gathering in the oscillating circuit of signal processing circuit, the oscillator signal of output certain frequency is to microprocessor, this oscillator signal exports control relay circuit plate 10 to through the output control signal that forms sensor after the adaptive algorithm adjustment in microprocessor, control relay circuit plate 10 is according to the signal controlling heating plate work that receives.When electric pressure cooking saucepan was worked, control circuit board 10 continued to detect, and further controlled the work of electric pressure cooking saucepan, constituted closed-loop control system.
When the signal controlling output circuit adopts ghyristor circuit, then adjust the silicon controlled angle of flow according to the signal of input, realize the adjusting of pressure regulation and power output by controllable silicon, reduce the heating power that increases heating plate until disconnecting circuit or closed circuit gradually with the heating power of control heating plate gradually.
Claims (10)
1, a kind of flip-shell electric pressure cooking saucepan, comprise housing, outer pot, interior pot, the pot cover and the sealing ring of pot in the sealing, electric heater unit between interior pot and the outer pot, control circuit board, described pot cover and housing are hinged, the retaining mechanism of described pot cover cooperates with outer pot, it is characterized in that: the steam separation sleeve is installed in perforate on pot cover, the steam-operating push rod, capacitance sensor, described capacitance sensor comprises first pole plate, second pole plate, described steam-operating push rod is stressed and change produces displacement and drive first pole plate, make first pole plate and the second pole plate relative motion, described two pole plates are electrically connected with control circuit board.
2, a kind of flip-shell electric pressure cooking saucepan according to claim 1, it is characterized in that: capacitance sensor also has building-out capacitor, and is electrically connected with control circuit board.
3, a kind of flip-shell electric pressure cooking saucepan according to claim 2 is characterized in that: described building-out capacitor is to be close to capacitance sensor and independent the setting.
4, a kind of flip-shell electric pressure cooking saucepan according to claim 2, it is characterized in that: described building-out capacitor comprises two pole plates, one of them pole plate is first pole plate or second pole plate of described capacitance sensor.
5, according to the described a kind of flip-shell electric pressure cooking saucepan of the arbitrary claim of claim 1 to 4, it is characterized in that: the described outer pot the bottom of a pan is an elastomeric material.
6, according to the described a kind of flip-shell electric pressure cooking saucepan of the arbitrary claim of claim 1 to 4, it is characterized in that: between the described heater and the outer pot the bottom of a pan elastic device is set.
7, a kind of flip-shell electric pressure cooking saucepan according to claim 6, it is characterized in that: described steam-operating push rod also is provided with the flexible member that it is resetted.
8, a kind of flip-shell electric pressure cooking saucepan according to claim 6 is characterized in that: first pole plate and the second pole plate relative motion can be to change polar plate spacing or corresponding area.
9, a kind of flip-shell electric pressure cooking saucepan according to claim 6, it is characterized in that: described steam-operating push rod drives first pole plate, can be directly to drive or drive indirectly.
10, a kind of flip-shell electric pressure cooking saucepan according to claim 9 is characterized in that: first pole plate with
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201589589U CN201164353Y (en) | 2007-12-26 | 2007-12-26 | Flip type electric pressure cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201589589U CN201164353Y (en) | 2007-12-26 | 2007-12-26 | Flip type electric pressure cooker |
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| Publication Number | Publication Date |
|---|---|
| CN201164353Y true CN201164353Y (en) | 2008-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201589589U Expired - Fee Related CN201164353Y (en) | 2007-12-26 | 2007-12-26 | Flip type electric pressure cooker |
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| Country | Link |
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| CN (1) | CN201164353Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110973941A (en) * | 2019-12-15 | 2020-04-10 | 上海岸谷工业产品设计有限公司 | Self-locking mechanism for water cup |
-
2007
- 2007-12-26 CN CNU2007201589589U patent/CN201164353Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110973941A (en) * | 2019-12-15 | 2020-04-10 | 上海岸谷工业产品设计有限公司 | Self-locking mechanism for water cup |
| CN110973941B (en) * | 2019-12-15 | 2024-05-10 | 上海岸谷工业产品设计有限公司 | Self-locking mechanism of water cup |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081217 Termination date: 20151226 |
|
| EXPY | Termination of patent right or utility model |