CN202140127U - Driving mechanism of engine braking device - Google Patents
Driving mechanism of engine braking device Download PDFInfo
- Publication number
- CN202140127U CN202140127U CN201120043166.3U CN201120043166U CN202140127U CN 202140127 U CN202140127 U CN 202140127U CN 201120043166 U CN201120043166 U CN 201120043166U CN 202140127 U CN202140127 U CN 202140127U
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- Prior art keywords
- braking
- connecting rod
- driving mechanism
- blind hole
- driven plunger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2820/00—Details on specific features characterising valve gear arrangements
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- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
A driving mechanism of an engine braking device comprises a braking box, a connecting rod, a driving piston and a braking plunger. A vertical blind hole and a horizontal blind hole which are crossed are arranged in the braking box, the driving piston is disposed in the horizontal blind hole, the braking plunger is arranged on the lower portion of the vertical blind hole, the connecting rod consists of an upper connecting rod and a lower connecting rod, a rotating pair is disposed between the upper connecting rod and the braking box, another rotating pair is arranged between the lower connecting rod and the braking plunger, and a fluid channel is disposed in the braking box so that the horizontal blind hole is connected with an engine oil fluid network. The driving mechanism can be integrated with an engine, so that the height, the volume and the weight of the engine braking device are reduced, a hydraulic braking control valve is omitted, accordingly, cost is lowered, and braking response time is shortened. Braking load is not born by liquid, leakage, deformation and load fluctuation which are caused by high oil pressure and high oil temperature avoided, braking valve lift is not affected by oil temperature, oil pressure and air content, the value of the braking valve lift can be lower, and requirements on the gap between an engine piston and an air valve are reduced.
Description
Technical field:
The utility model relates to mechanical field, relates in particular to the driving mechanism of the braking device of motor, particularly a kind of engine brake.
Background technique:
In the existing technology, internal-combustion engine is known as the method behaviour of brake tool altogether, only needed temporarily convert motor into compressor.Fuel oil is cut off in this conversion; When the engine piston compression stroke finishes or when finishing, open outlet valve; Allowing to be compressed gas (being air during braking) is released; The motor energy that pressurized gas absorbed in compression stroke can not turn back to engine piston at expansion stroke subsequently, but dissipate through the exhaust and the radiation system of motor.Final result is effective engine braking, slows down the speed of vehicle.
A precedent of engine brake is that the U.S. Patent number 3220392 that is provided by comings (Cummins) discloses, according to the engine braking system of this patent manufacturing commercial very successful.But, this type of engine braking system is the annex of overhead on motor.For this type of engine brake is installed, between cylinder and valve gap, to add packing ring, therefore, increased height, weight and the cost of motor extraly.Above-mentioned these problems are because engine braking system is used as an annex of motor, rather than of motor constituent element or integrated part caused.
Engine brake of the prior art is delivered to the outlet valve that will open through oil hydraulic circuit with the machinery input.Be usually included in reciprocating main piston in the master piston bore on the oil hydraulic circuit; This to-and-fro motion comes from the Engine Mechanical input; Such as the shaking of oil sprayer rocking arm, the hydraulic fluid that moves through of main piston is delivered to the sub-piston on the oil hydraulic circuit, makes its to-and-fro motion in slave piston bore; Sub-piston acts on the outlet valve directly or indirectly, produces the valve actuation of engine braking running.
Therefore; Above-mentioned by hydraulically powered another shortcoming of conventional engines break existence, i.e. the contractibility of hydraulic system or distortion, this flexibility with liquid is relevant; A large amount of compressions that high flexibility causes brake valve to rise reduce; Valve rises reduces the increase that causes valve to carry, and the increase that valve carries causes higher flexibility, causes a kind of vicious circle.In addition, the valve liter that is caused by hydraulic pressure distortion reduces to increase along with the increase of engine speed, and to rise trend on the contrary with the desired brake valve of engine braking performance.In order to reduce flexible hydraulic, must use large diameter hydraulic piston, increase volume and weight.And oily stream need make enlarged bore piston stretch out for a long time or withdraw, and causes that braking system inertia is big, reaction is slow.
Summary of the invention:
The purpose of the utility model is to provide a kind of new work engine braking device; The overhead mode that described this new work engine braking device will solve engine braking system in the existing technology has increased the height of motor and the technical problem of manufacture cost, will solve the technical problem that braking system inertia is big, reaction is slow that hydraulically powered engine brake exists simultaneously.
The driving mechanism of this engine brake of the utility model; Be made up of an outlet valve control mechanism, wherein, described outlet valve control mechanism is made up of braking casing, connecting rod, driven plunger and spool; Be provided with vertical blind hole and horizontal blind hole in the described braking casing; Vertically blind hole and horizontal blind hole intersect, and are provided with described driven plunger in the described horizontal blind hole, and described vertical blind hole bottom is provided with described spool; Be provided with in the described driven plunger along its axial grooving; The part of described connecting rod is positioned at described grooving, and the width of described grooving is slightly larger than the width of described connecting rod, is provided with the fluid passage in the described braking casing horizontal blind hole is linked to each other with the machine oil fluid network.
Further; Described connecting rod comprises connecting rod and lower link; Last connecting rod lower end is connected through revolute pair with the lower link upper end, and described going up between small end and the described braking casing is provided with revolute pair, is provided with revolute pair between described lower link lower end and the described spool.
Further; Described spool lower end is fixed with an end of spring; The described spring the other end is fixed on the described braking casing; Horizontal blind hole outer end in described braking casing is fixed with a spring seat, is provided with the return spring of driven plunger between described driven plunger outer end and the described spring seat.
Further, described upward connecting rod lower end and lower link upper end constitute revolute pair through a spheroid, and described spheroid is arranged in the guide ring, and described guide ring is arranged in the grooving of described driven plunger.
Further; Described driven plunger is made up of left driven plunger and right driven plunger; Be provided with described grooving in the described right driven plunger, the formation revolute pair that matches on described upward connecting rod lower end and the described lower link, described revolute pair is positioned at described grooving.
Further, described braking casing is provided with the valve clearance adjusting screw, and the small end formation revolute pair that matches is gone up in valve clearance adjusting screw bottom surface and described, and the formation revolute pair matches for described lower link lower end and described spool upper end.
Further, the upper end of described spool is provided with and is tilted to outer transitional surface.
Further, described grooving right-hand member up and down side is provided with chamfering, described grooving width direction and described on connecting rod and lower link be Spielpassung.
Further, described braking casing middle part is provided with discharge orifice, and described discharge orifice is communicated with described vertical blind hole with extraneous.
Further, the described braking casing rocking arm that is motor.
The working principle of the utility model is: when the needs motor when normal working is converted to the engine braking state, the engine braking control mechanism is opened fuel feeding, machine oil flows to the fluid passage in the braking casing through the brake fluid networking.Oil pressure overcomes return spring and the load of the spring on the spool on the driven plunger, and driven plunger is pushed away to the right in horizontal hole.Connecting rod and lower link are become vertically from inclination, and lower link makes spool become extended position from retracted position, and driving mechanism becomes operating position from off position, realizes the switching of motor from normal working to engine braking state.When not needing engine braking; The engine braking control mechanism cuts out draining, and driven plunger does not receive oil pressure, under the effect of its return spring to moving to left; Rest on the left side of horizontal hole; Last connecting rod and lower link are inclination from vertically becoming again, and spool separates with the motor normal operation in vertical hole, upwards being withdrawn into off position under the effect of spring.
The utility model is compared with prior art, and its effect is actively with tangible.The utility model can become one with motor, thereby reduces height, the volume and weight of engine brake; Need not adopt the hydraulic braking control valve, reduce cost, reduce reaction time; Do not adopt liquid to bear brake load; The leakage, distortion and the load fluctuation that do not have high oil pressure and high oily temperature to cause; Brake valve rises the influence that does not receive oil temperature, oil pressure and air content, and brake valve rises can obtain littler value, reduces the requirement to engine piston and valve clearance.
Description of drawings:
Fig. 1 is the structural representation of driving mechanism first embodiment of a kind of engine brake of the utility model when being in the off-position.
Fig. 2 is the structural representation of driving mechanism second embodiment of a kind of engine brake of the utility model when being in the off-position.
Fig. 3 is driving mechanism second embodiment's the application schematic representation of a kind of engine brake of the utility model.
Embodiment:
Embodiment 1:
As shown in Figure 1; The driving mechanism 100 of a kind of engine brake of the utility model; Constitute by a braking casing 2102, last connecting rod 186, lower link 186 and a driven plunger 162 that structure is identical; Driven plunger 162 is positioned at the horizontal piston hole 260 of braking casing 2102, pushes the left side to by return spring 156 usually, rests on the end face 246 of piston hole 260.The other end of return spring 156 is positioned on the spring seat 158, and spring seat 158 is by ring washer 157 location that are fixed on the braking casing 2102.There is a grooving 137 as guiding groove the centre of driven plunger 162; The diameter of the width of guiding groove 137 and last connecting rod and lower link 186 is roughly the same; There are two chamferings 163 on the right of guiding groove 137, and the inclination that last connecting rod, lower link 186 are in when being positioned at horizontal hole 260 left ends with driven plunger 162 is roughly the same.There is a spheroid 189 centre of last connecting rod, lower link 186, and its diameter is identical with the diameter of last connecting rod, lower link 186.Surface of contact between last connecting rod, lower link 186 and the spheroid 189 is 125, and both all are contained in the guiding groove 137.Spheroid 189 also is contained in the guide ring 188.The left side of guide ring 188 is positioned at the grooving 187 on driven plunger guiding groove 137 left sides, and in the grooving that is contained in two connecting rods 186 up and down 185 of ring, the right of guide ring 188 rings then leans against on the right internal surface 165 of driven plunger guiding groove 137.Spool 160 is positioned at the vertical piston hole 190 of braking casing 2102, links to each other through the protruding sphere of the 3rd concave spherical surface 128 with the bottom of lower link 186, and sphere 128 joins with the conical surface 126.The inclination of the angle of the conical surface 126 and lower link 186 is roughly the same.Brake spring 177 is with pushing away on the spool 160, with lower link 186 pretensions.Brake spring 177 is fixed on the braking casing 2102 by nut 179.
In order to regulate braking valve clearance (initial position of spool 160); Driving mechanism 100 also contains the valve clearance controlling mechanism; Comprise valve clearance adjusting screw 1102, the lower end of adjusting screw 1102 links to each other through second concave spherical surface 122 with last connecting rod 186, and the upper end is fastened on the braking casing 2102 by nut 1052.Draining hole 168 on the braking casing 2102 is to be used for preventing the hydraulic pressure locking that leakage of oil causes.
The working procedure of present embodiment is: when the needs motor when normal working is converted to the engine braking state; Engine braking control mechanism (not shown) is opened fuel feeding; Machine oil is through the brake fluid networking; Comprise the fluid passage 214 in the braking casing 2102, flow to the driving mechanism 100 of break.Oil pressure overcomes the load of the brake spring 177 on return spring 156 and the spool 160 on the driven plunger 162, and driven plunger 162 is pushed away to the right in horizontal hole 260.Driven plunger 162 promotes guide ring 188 to the right, and guide ring 188 promotes spheroids 189, and spheroid 189 promotes connecting rods 186, and connecting rod, lower link 186 are become vertically from inclination.The spool that links to each other with the bottom of lower link 186 through sphere 128 160 becomes extended position from retracted position; Driving mechanism 100 becomes operating position from off position (Fig. 1), realizes the switching (reference below the applicating example of Fig. 3) of motor from normal working to engine braking state.
When not needing engine braking, the engine braking control mechanism cuts out draining, and driven plunger 162 does not receive oil pressure, under the effect of its return spring 156, to moving to left, rests on the left side 246 of horizontal hole 260.Last connecting rod, lower link 186 are inclination from vertically becoming again, and spool 160 separates with the motor normal operation in vertical hole 190, upwards being withdrawn into off position under the effect of brake spring 177.
Embodiment 2:
As shown in Figure 2, the driving mechanism 100 of present embodiment is embodiment 1 differentiation.Driven plunger comprises right driven plunger 162 and left driven plunger 164.Still be connected through sphere 125 between the last connecting rod 184 of present embodiment and the lower link 186, but do not have spheroid, also do not need guide ring.Right driven plunger 162 still has guiding groove 137; The diameter of the width of guiding groove 137 and two connecting rods 184 and 186 is roughly the same; There are two chamferings 163 on the right of guiding groove 137, and the inclination that goes up connecting rod 184 and 186 when being positioned at horizontal hole 183 left sides with left driven plunger 164 is roughly the same.Spool 160 is positioned at the vertical piston hole 190 of braking casing 2102, links to each other through the 3rd protruding sphere of the 3rd concave spherical surface 128 with the bottom of lower link 186, and the 3rd concave spherical surface 128 joins with the conical surface 126.The inclination of the angle of the conical surface 126 and lower link 186 is roughly the same.Spring 177 with connecting rod 184 and 186 pretensions, makes the right surface of the following bulb of connecting rod 184 near left driven plunger 164 with pushing away on the spool 160.In order to regulate valve clearance (initial position of spool 160), connecting rod 184 and 186 must separate with the right side of guiding groove 137.Can spacing the realization be arranged through right driven plunger 162 mobile, make the stroke of the stroke of right driven plunger 162 less than left driven plunger 164.So right driven plunger hole 260 is greater than left driven plunger hole 183.Certainly, also can use other method,, come the mobile of restrict right driven plunger 162 like pin and the combining of gain.
Fig. 3 is that of second embodiment of driving mechanism of a kind of engine brake of the utility model uses schematic representation.The braking casing 2102 of driving mechanism is a special-purpose brake rocker arm, for braking the part of special-purpose exhaust valve actuation device 2002.Brake special-purpose exhaust valve actuation device 2002 and also comprise brake cam 2302, cam follower wheel 2352 and brake spring 1982.2302 of brake cams contain the small boss 232 and 233 that is positioned on the basic circle 2252, are used for engine braking.
The normal operation of engine exhaust valve is by engine exhaust valve system or valve actuator 200 driving and generating.Outlet valve is 200 to comprise cam 230, cam follower wheel 235, rocking arm 210, valve bridge 400 and outlet valve 300.3001 and 3002 of outlet valve 300 is biased on the valve seat 320 of engine cylinder-body 500 by engine air valve spring 3101 and 3102, stops gas between engine cylinder and outlet pipe 600, to flow.Rocking arm 210 is installed on the pitman arm shaft 205 rock typely, with the motion of cam 230, passes to outlet valve 300, and it is is periodically opened and closed.Outlet valve system also has miscellaneous part, as the valve clearance adjusting screw with resemble foot pad etc., for the purpose of concise and to the point, economize approximately at this.Cam 230 has a big boss 220 at interior basic circle more than 225, produce main valve and rise curve, is used for normal engine operation.
When the needs motor when normal working is converted to the engine braking state; Engine braking control mechanism (not shown) is opened fuel feeding; Machine oil is through the brake fluid networking; Comprise the fluid passage 214 in fluid passage 211, radial hole 212 and the rocking arm in the pitman arm shaft, flow to the driving mechanism 100 of break.Oil pressure earlier, after overcome spring 177 and the load of the return spring 156 on the right driven plunger 162 on the spool 160, left driven plunger 164 is pushed away (Fig. 2) to the right in horizontal hole 183.Left side driven plunger 164 promotes connecting rod 184 to the right, and it and lower link 186 are become vertically from inclination.The spool that links to each other with the bottom of lower link 186 through the 3rd concave spherical surface 128 160 becomes extended position from retracted position.The stroke of spool 160 has been eliminated the gap 132 between spool 160 and the braking mandril 116; Driving mechanism that moves through break 100 and braking mandril 116 that the small boss 232 and 233 of brake cam 2302 is produced are delivered to outlet valve 3001, produce engine braking.
When not needing engine braking; The engine braking control mechanism cuts out draining, and left driven plunger 164 does not receive oil pressure with right driven plunger 162, under the effect of return spring 156 to moving to left; Right driven plunger 162 rests in the place, right side (Fig. 2) of horizontal hole 183; Left side driven plunger 164, continues to rest on the left side 246 of horizontal hole 183 to moving to left through spring 177 under the horizontal component effect of last connecting rod 184 and lower link 186.At this moment, connecting rod 184 and 186 is inclination from vertically becoming again, and spool 160 vertically upwards is being withdrawn into off position in the hole 190, and forms gap 132 between the braking mandril 116, makes the driving mechanism 100 of break separate with the motor normal operation.
The embodiment of the utility model describes the utility model, rather than limits it.In fact, those people that are expert at one's trade can show to change places and in the scope of the utility model and principle, the utility model made amendment and change.For instance, certain part of functions that concrete mechanism illustrated or described can be used for another concrete mechanism, and then obtains a new mechanism.Embodiment not only can be used for can also being used in the exhaust rocker arm 210 of existing motor in the special-purpose brake rocker arm 2102 shown in Figure 3.In addition, between last connecting rod 184 and the lower link 186, go up between connecting rod 184 and braking casing 2102 or the adjusting screw 1102 and the revolute pair that constitutes between lower link 186 and the brake piston 160 also can be cylinder or other connection.In fact, the motion between driven plunger 162 and the brake piston 160 can be realized by single connecting rod.Therefore, the utility model will comprise above-mentioned modification and change, as long as they belong within appended claim or the scope suitable with requirement power.
Claims (10)
1. the driving mechanism of an engine brake; Be made up of an outlet valve control mechanism, it is characterized in that: described outlet valve control mechanism is made up of braking casing, connecting rod, driven plunger and spool, is provided with vertical blind hole and horizontal blind hole in the described braking casing; Vertically blind hole and horizontal blind hole intersect; Be provided with described driven plunger in the described horizontal blind hole, described vertical blind hole bottom is provided with described spool; Be provided with in the described driven plunger along its axial grooving; The part of described connecting rod is positioned at described grooving, and the width of described grooving is slightly larger than the width of described connecting rod, is provided with the fluid passage in the described braking casing horizontal blind hole is linked to each other with the machine oil fluid network.
2. the driving mechanism of a kind of engine brake as claimed in claim 1; It is characterized in that: described connecting rod comprises connecting rod and lower link; Last connecting rod lower end is connected through revolute pair with the lower link upper end; Described going up between small end and the described braking casing is provided with revolute pair, is provided with revolute pair between described lower link lower end and the described spool.
3. the driving mechanism of a kind of engine brake as claimed in claim 1; It is characterized in that: described spool lower end is fixed with an end of spring; The described spring the other end is fixed on the described braking casing; There is a spring seat horizontal blind hole outer end in described braking casing, is provided with the return spring of driven plunger between described driven plunger outer end and the described spring seat.
4. according to claim 1 or claim 2 a kind of driving mechanism of engine brake; It is characterized in that: described upward connecting rod lower end and lower link upper end constitute revolute pair through a spheroid; Described spheroid is arranged in the guide ring, and described guide ring is arranged in the grooving of described driven plunger.
5. according to claim 1 or claim 2 a kind of driving mechanism of engine brake; It is characterized in that: described driven plunger is made up of left driven plunger and right driven plunger; Be provided with described grooving in the described right driven plunger; Described connecting rod lower end and the described lower link upper end formation revolute pair that matches that goes up, described revolute pair is positioned at described grooving.
6. according to claim 1 or claim 2 a kind of driving mechanism of engine brake; It is characterized in that: described braking casing is provided with the valve clearance adjusting screw; The small end formation revolute pair that matches is gone up in valve clearance adjusting screw bottom surface and described, and the formation revolute pair matches for described lower link lower end and described spool upper end.
7. the driving mechanism of a kind of engine brake as claimed in claim 1 is characterized in that: the transitional surface outside the upper end of described spool is provided with and is tilted to.
8. according to claim 1 or claim 2 a kind of driving mechanism of engine brake, it is characterized in that: described grooving right-hand member is provided with chamfering in the side up and down, described grooving width direction and described on connecting rod and lower link be Spielpassung.
9. the driving mechanism of a kind of engine brake as claimed in claim 1 is characterized in that: described braking casing middle part is provided with discharge orifice, and described discharge orifice will described vertical blind hole and extraneous connection.
10. the driving mechanism of a kind of engine brake as claimed in claim 1, it is characterized in that: described braking casing is the rocking arm of motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120043166.3U CN202140127U (en) | 2010-02-26 | 2011-02-14 | Driving mechanism of engine braking device |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010114320.1 | 2010-02-26 | ||
| CN201020119327 | 2010-02-26 | ||
| CN201020119327.8 | 2010-02-26 | ||
| CN201010114320 | 2010-02-26 | ||
| CN201120043166.3U CN202140127U (en) | 2010-02-26 | 2011-02-14 | Driving mechanism of engine braking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202140127U true CN202140127U (en) | 2012-02-08 |
Family
ID=44600737
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110041875.2A Active CN102191965B (en) | 2010-02-26 | 2011-02-14 | Driving device of engine brake |
| CN201120043166.3U Expired - Fee Related CN202140127U (en) | 2010-02-26 | 2011-02-14 | Driving mechanism of engine braking device |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110041875.2A Active CN102191965B (en) | 2010-02-26 | 2011-02-14 | Driving device of engine brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN102191965B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191965A (en) * | 2010-02-26 | 2011-09-21 | 上海尤顺汽车部件有限公司 | Driving device of engine brake |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279020B (en) * | 2013-07-10 | 2017-11-24 | 上海尤顺汽车部件有限公司 | A kind of solid chain type engine valve actuator |
| CN114526138A (en) * | 2019-08-19 | 2022-05-24 | 上海尤顺汽车技术有限公司 | Engine valve driving mechanism |
| US11739667B2 (en) | 2019-08-19 | 2023-08-29 | Shanghai Universoon Autotech Co., Ltd. | Engine valve actuating apparatus |
| CN113482742A (en) * | 2021-03-01 | 2021-10-08 | 褚平华 | Valve driving device of engine and driving method thereof |
| CN114462166B (en) * | 2022-02-17 | 2024-03-15 | 成都飞机工业（集团）有限责任公司 | Method, device, equipment and medium for designing electric control brake valve |
| WO2024051732A1 (en) * | 2022-09-07 | 2024-03-14 | 上海尤顺汽车技术有限公司 | Auxiliary valve driving mechanism |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU694703B2 (en) * | 1996-10-11 | 1998-07-23 | Mitsubishi Fuso Truck And Bus Corporation | Engine-brake assisting system |
| JP4030401B2 (en) * | 2002-09-27 | 2008-01-09 | 本田技研工業株式会社 | 4-cycle direct injection engine |
| CN102003238B (en) * | 2009-08-31 | 2013-05-01 | 上海尤顺汽车部件有限公司 | Engine braking device |
| CN102191965B (en) * | 2010-02-26 | 2013-04-03 | 上海尤顺汽车部件有限公司 | Driving device of engine brake |
-
2011
- 2011-02-14 CN CN201110041875.2A patent/CN102191965B/en active Active
- 2011-02-14 CN CN201120043166.3U patent/CN202140127U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191965A (en) * | 2010-02-26 | 2011-09-21 | 上海尤顺汽车部件有限公司 | Driving device of engine brake |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102191965B (en) | 2013-04-03 |
| CN102191965A (en) | 2011-09-21 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120208 Termination date: 20190214 |