CN201513208U - Braking device of engine - Google Patents
Braking device of engine Download PDFInfo
- Publication number
- CN201513208U CN201513208U CN 200920208106 CN200920208106U CN201513208U CN 201513208 U CN201513208 U CN 201513208U CN 200920208106 CN200920208106 CN 200920208106 CN 200920208106 U CN200920208106 U CN 200920208106U CN 201513208 U CN201513208 U CN 201513208U
- Authority
- CN
- China
- Prior art keywords
- engine braking
- hole
- braking apparatus
- valve
- radial
- 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
Abstract
The utility model discloses a braking device of an engine. The braking device comprises an exhaust valve control mechanism which comprises a drive force output cam, a cam driven wheel, a push rod, a rocker arm and a rocker arm shaft; one end of the push rod is connected with one end of the rocker arm; the cam driven wheel is arranged at the other end of the push rod; the drive force input cam is arranged outside the cam driven wheel; horizontal driving pistons and a vertical braking piston are arranged at the other end of the rocker arm; annular grooves are arranged at the middle parts of the driving pistons; the driving pistons on the lateral surfaces and the left sides of the annular grooves are used as a non-operation surface and an operation surface which are compacted and contacted with the upper end face of the braking piston; and a valve rod connecting piece of an exhaust valve is arranged below the braking piston. The engine power is periodically transmitted to the rocker arm by the drive force cam; and by controlling the gap between the rocker arm and the valve rod connection piece of the exhaust valve through a solenoid valve, the switching between a braking state and a normal work state can be realized, the volume and the weight of the braking device can be reduced, and the leakage, the deformation and load fluctuation caused by the high oil pressure do not generate.
Description
Technical field:
The utility model relates to mechanical field, relates in particular to the braking device of motor, particularly a kind of engine braking apparatus.
Background technique:
In the prior art, internal-combustion engine is known altogether as the method behaviour of brake tool, only needed motor temporarily is converted to 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 by 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 machinery input of motor, such as the shaking of oil sprayer rocking arm, the hydraulic fluid that moves through of main piston is delivered to sub-piston on the oil hydraulic circuit, make 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-mentionedly there is another shortcoming by hydraulically powered conventional engines break, be the contractibility or the distortion of hydraulic system, 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 this utility model is to provide a kind of engine braking apparatus, the overhead mode that described this engine braking apparatus will solve engine braking system in the prior art 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.
This engine braking apparatus of the present utility model is made of an outlet valve control mechanism, wherein, described outlet valve control mechanism is by the driving force input cam; rocking arm and pitman arm shaft constitute; an end of described rocking arm is provided with a vertical hole and a horizontal hole; vertically be provided with spool in the hole; the upper end of described spool is provided with axial blind hole; the outlet port left surface of described axial blind hole is to be tilted to outer inclined-plane; be provided with driven plunger in the horizontal hole; be provided with liquid sealing between the outer wall of described driven plunger and the horizontal hole and be connected; the middle part of driven plunger is provided with one along its radial blind holes of radially extending; the right flank of described radial blind holes is to be tilted to inclined-plane outward, is provided with a connecting rod between the bottom surface of axial blind hole and the bottom surface of radial blind holes.
Further, be provided with the fluid passage in the described pitman arm shaft vertically, be provided with radial hole along radial direction, be provided with fluid passage in the described rocking arm, an end of described fluid passage is communicated with described radial hole, and the other end is communicated with described horizontal hole.
Further, the bottom surface of described axial blind hole and radial blind holes is interior concave spherical surface.
Further, described connecting rod two ends are protruding sphere.
Further, the lower end of described spool is supported by an end of a spring, and the other end of described spring is fixed on the rocking arm.
Further, described spool has axially and radial location mechanism.
Further, described driven plunger has return spring.
Further, described driving force input cam within it basic circle be provided with a big convex portion and at least one small embossment part.
Further, described fluid passage is communicated with oil-feed port and oil drain out in the three-way magnetic valve.
Working principle of the present utility model is: the driving force input cam is connected with the power take-off mechanism of motor, and the driving force input cam makes rocker arms roll under the motivational drive of motor.The outlet valve valve stem coupling member is arranged on the control valve rod of engine exhaust valve.Need motor when normal working is converted to engine braking, send actuating signal to three-way magnetic valve by a controller.Three-way magnetic valve is by open-minded by the electric current of its positive terminal and negative terminal, the spool of solenoid valve glides, open oil-feed port, machine oil is by the brake fluid networking, comprise otch and hydraulic channel in pitman arm shaft fluid passage and radial hole, the rocking arm, flow to braking drive organ, oil flows in the horizontal hole of rocking arm.Oil pressure overcomes the load of driven plunger right-hand member spring, and driven plunger is pushed away to the right in horizontal hole, and connecting rod becomes vertically, and driving mechanism becomes operating position from off position.When not needing engine braking, the engine braking control mechanism cuts out draining, and driven plunger is not subjected to oil pressure, to moving to left, rests on the left side of horizontal hole under the effect of its right-hand member spring.Spool is got back to off position upwards moving under the effect of brake spring in vertical hole, separate with the motor normal operation.
The utility model and prior art compare, and its effect is actively with tangible.The utility model utilizes cam that the power of motor periodically is delivered to rocking arm, utilize the exhaust action of rocking arm operations platoon air valve, utilize the gap between electromagnetic valve rocking arm and the outlet valve drive end, realize the switching of braking and motor proper functioning two states and keep, can be integrated with motor, thereby reduce the volume and weight of engine brake, need not adopt the hydraulic braking control valve, reduced cost, reduced reaction time, the leakage that does not have high oil pressure and high oil pressure to cause, distortion and load fluctuation, brake valve rises and is not subjected to the oil temperature, the influence of oil pressure and air content, 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 that the braking drive organ of engine braking apparatus of the present utility model is in the off-position.
Fig. 2 is the schematic representation that the braking drive organ in the engine braking apparatus of the present utility model is in " opening " position.
Fig. 3 is the schematic representation of the working state of fluid passage in the engine braking apparatus of the present utility model and three-way magnetic valve.
Fig. 4 is the schematic representation of another working state of fluid passage in the engine braking apparatus of the present utility model and three-way magnetic valve.
Embodiment:
Embodiment 1:
Such as Fig. 1; Fig. 2; Fig. 3 and shown in Figure 4; Engine braking apparatus 100 of the present utility model; Consisted of by an air bleeding valve controlling organization 200; Wherein, Described air bleeding valve controlling organization 200 is by driving force input cam 230; Cam follower wheel 235; Push rod 201; Rocking arm 210 and rocker arm shaft 205 consist of; The middle part of described rocking arm 210 is arranged on the rocker arm shaft 205; One end of described push rod 201 is connected with an end of rocking arm 210; Described cam follower wheel 235 is arranged in the other end of push rod 201; Described driving force input cam 230 is arranged on outside the cam follower wheel 235; The excircle of the rotation round of protuberance and cam follower wheel 235 intersects in the driving force input cam 230; Rocking arm 210 arranged outside have a biasing back-moving spring 198; Be provided with fluid passage 214 in the described rocking arm 210; Be provided with vertically fluid passage 211 in the rocker arm shaft 205; Be provided with a radial hole 212 along a radius; Described radial hole 212 is communicated with 214 with described fluid passage; Be provided with an otch 213 in the rocking arm 210; Described otch 213 is communicated with radial hole 212 and described fluid passage 214 1 ends respectively; The other end of rocking arm 210 is provided with a vertical hole 190 and a lateral aperture 166; Described fluid passage 214 other ends and described 166 inner connections of lateral aperture; The diameter of described fluid passage 214 is less than described lateral aperture 166 diameters; Described lateral aperture 166 outer ends and described rocking arm 210 end face; 190 lower ends, described vertical hole flush with described rocking arm 210 lower ends; 190 upper ends, described vertical hole and described lateral aperture 166 intersect and are three-port structure; Be provided with spool 160 in the described vertical hole 190; Described spool 160 upper ends are provided with the axial blind hole that the bottom surface is interior concave spherical surface 128; Described blind hole exit left surface 126 is for being tilted to outer inclined-plane 126; Be provided with driven plunger 164 in the described lateral aperture 166; Being provided with liquid sealing between described driven plunger 164 outer walls and the described lateral aperture 166 is connected; Described driven plunger 164 middle parts are provided with one along its another blind hole of radially extending; The bottom surface of described another blind hole is the sphere 122 of indent; The right flank 270 of described another blind hole 122 is for being tilted to another outer inclined-plane 270; The sphere 128 of described blind hole and another blind hole; Be provided with the connecting rod 184 that two ends are protruding sphere between 122; Concave spherical surface 122 in described connecting rod 184 upper ends and described another blind hole cooperates; Concave spherical surface 128 in described connecting rod 184 lower ends and the described blind hole cooperates; Described spool 160 lower ends are fixed with an end of spring 177; Described spring 177 other ends are fixed on the described rocking arm 210 by screw 179; The bias force that spring 177 makes progress for spool 160; Described spool 160 upper surfaces contact with described driven plunger 164 lateral surfaces; Described spool 160 lateral walls middle part is provided with axial grooving 137; Described rocking arm other end bottom is fixed with straight pin 142; Described straight pin 142 1 ends stretch in the described grooving 137; In case spool 160 is gone out under the oil pressure effect; Be fixed with a spring base 158 that is annular in described lateral aperture 166 outer ends by snap ring 157; Be provided with another spring 156 between described driven plunger 164 outer ends and the described spring base 158; Another spring 156 is given described driven plunger 164 bias power left, and described actuation plunger 164 inner faces contact with described lateral aperture 166 inner faces.
Further, described another inclined-plane 270 is parallel with described inclined-plane 126, when control mechanism cuts out draining, driven plunger 164 moves to left under spring 156 effects, this moment, connecting rod 184 received that the constraint of sphere 128 and another sphere 122 moves to left and is tilted to the left, and relies on inclined- plane 270 and 126.
Further, described driven plunger 164 outer ends are provided with axial blind hole, and described another spring 156 1 ends are arranged in the described blind hole, and the other end of described another spring 156 is connected with described spring seat 158.
Further, be provided with braking valve clearance adjusting screw 1102 between described push rod 201 and the rocking arm 210, described braking valve clearance adjusting screw 1102 is connected with push rod 201, and braking valve clearance adjusting screw 1102 is connected with a nut 1052 after passing an end of rocking arm 210.
Further, described rocking arm 210 the other ends are fixedly connected with contiguous block, are provided with in the described contiguous block to activate gap adjustment screws 110, and described actuating gap adjustment screws 110 rear ends are connected with another nut 105.
Further, described driving force input cam 230 basic circle 225 within it is provided with three convex portions, and one of them convex portion 220 is greater than other two convex portions 232,233.
Further, described fluid passage 211 is communicated with oil-feed port 111 and oil drain out 222 in the three-way magnetic valve 51.
The working procedure of present embodiment is: driving force input cam 230 is connected with the power take-off mechanism (not shown) of motor, and driving force input cam 230 shakes rocking arm 210 under the motivational drive of motor.Outlet valve valve stem coupling member 116 is arranged on the control valve rod 3001 of engine exhaust valve 300.Need motor when normal working is converted to engine braking, send actuating signals to three-way magnetic valve 51 by a controller (not shown).Three-way magnetic valve 51 is by open-minded by the electric current of its positive terminal 55 and negative terminal 57, the spool 58 of solenoid valve glides, open oil-feed port 111, allow in the horizontal hole 166 that hydraulic fluid enters into rocking arm by otch 213 in the fluid passage 211 in the pitman arm shaft 205 and radial hole 212, the rocking arm 2102 and hydraulic channel 214, flow to braking drive organ 100, oil stream enters in the horizontal hole 166 by fluid passage 214.Oil pressure overcomes the load of driven plunger right-hand member spring 156, spool 160 is pushed away downwards, spool 160 is realized guiding by the Spielpassung of the grooving 137 of its sidewall, after spool 160 moves down, driven plunger 164 just can be under the oil pressure effect, the load that overcomes spring 156 moves right, and rests on the spring seat 158.At this moment, the distance 132 of spool 160 lower ends and exhasut valve stem link 116 upper ends is eliminated, and the lower surface of spool 160 contacts with exhasut valve stem link 116, forms the solid link, and the driving mechanism of engine braking is in operating position.Small boss 232,233 motions that produced of brake cam 230 by brake rocker arm 210, driven plunger 164, spool 160 and exhasut valve stem link 116, are delivered to outlet valve 300, produce engine braking.When not needing engine braking, the engine braking control mechanism cuts out draining, and driven plunger 164 is not subjected to oil pressure, to moving to left, rests in the left side 246 of horizontal hole 166 under the effect of spring 156.Spool 160 is subjected to upwards to move in the vertical hole 190 of acting on of brake spring 177, gets back to off position, separates with the motor normal operation.
In the embodiment shown in fig. 1, also be provided with another outlet valve 300 in the motor, be provided with control valve rod 3002 in this outlet valve 300, the control valve rod is provided with another valve spring 3102, valve spring 3101 and valve spring 3102 are arranged between engine cylinder cover 500 and the valve bridge 400, and valve bridge 400 makes 300 interlocks of two outlet valves.Valve bridge 400 is right against and activates gap adjustment screws 110 belows, when this arrestment mechanism is in "off" state shown in Figure 1, under the effect of big projection 220 on the cam 230; rocking arm 210 swings make and activate gap adjustment screws 110 to pressing down valve bridge 400, realize the normal operating exhaust action of motor.
When this arrestment mechanism is in "open" state shown in Figure 2, because spool 160 stretches out downwards, the gap 132 of spool 160 lower ends and exhasut valve stem link 116 upper ends is eliminated or reduces, under kick 232,233 effects of cam 230, spool 160 is depressed exhasut valve stem link 116 earlier, realizes exhaust brake.
Present embodiment is that the utility model is described, rather than limits it.In fact, those people that are expert at one's trade can show to change places and in scope of the present utility model and principle the utility model made amendment and change.For instance, illustrated or certain part of functions described of concrete mechanism can be used for another concrete mechanism, and then obtains a new mechanism.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 (9)
1. engine braking apparatus, constitute by an outlet valve control mechanism, it is characterized in that: described outlet valve control mechanism is by the driving force input cam; rocking arm and pitman arm shaft constitute; an end of described rocking arm is provided with a vertical hole and a horizontal hole; vertically be provided with spool in the hole; the upper end of described spool is provided with axial blind hole; the outlet port left surface of described axial blind hole is to be tilted to outer inclined-plane; be provided with driven plunger in the horizontal hole; be provided with liquid sealing between the outer wall of described driven plunger and the horizontal hole and be connected; the middle part of driven plunger is provided with one along its radial blind holes of radially extending; the right flank of described radial blind holes is to be tilted to inclined-plane outward, is provided with a connecting rod between the bottom surface of axial blind hole and the bottom surface of radial blind holes.
2. engine braking apparatus as claimed in claim 1, it is characterized in that: be provided with the fluid passage in the described pitman arm shaft vertically, be provided with radial hole along radial direction, be provided with fluid passage in the described rocking arm, one end of described fluid passage is communicated with described radial hole, and the other end is communicated with described horizontal hole.
3. engine braking apparatus as claimed in claim 1 is characterized in that: the bottom surface of described axial blind hole and radial blind holes is interior concave spherical surface.
4. engine braking apparatus as claimed in claim 1 is characterized in that: described connecting rod two ends are protruding sphere.
5. engine braking apparatus as claimed in claim 1 is characterized in that: the lower end of described spool is supported by an end of a spring, and the other end of described spring is fixed on the rocking arm.
6. engine braking apparatus as claimed in claim 1 is characterized in that: described spool has axially and radial location mechanism.
7. engine braking apparatus as claimed in claim 1 is characterized in that: described driven plunger has return spring.
8. engine braking apparatus as claimed in claim 1 is characterized in that: described driving force input cam basic circle within it is provided with a big convex portion and at least one small embossment part.
9. engine braking apparatus as claimed in claim 2 is characterized in that: described fluid passage is communicated with oil-feed port and oil drain out in the three-way magnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920208106 CN201513208U (en) | 2009-08-19 | 2009-08-19 | Braking device of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920208106 CN201513208U (en) | 2009-08-19 | 2009-08-19 | Braking device of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201513208U true CN201513208U (en) | 2010-06-23 |
Family
ID=42484618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920208106 Expired - Lifetime CN201513208U (en) | 2009-08-19 | 2009-08-19 | Braking device of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201513208U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100170472A1 (en) * | 2009-01-05 | 2010-07-08 | Zhou Yang | Integrated engine brake with mechanical linkage |
| WO2012092693A1 (en) * | 2011-01-05 | 2012-07-12 | 上海尤顺汽车部件有限公司 | Auxiliary valve actuating mechanism of engine |
| CN101994539B (en) * | 2009-08-19 | 2012-10-03 | 上海尤顺汽车部件有限公司 | Braking device of engine |
| CN103912336A (en) * | 2013-01-09 | 2014-07-09 | 上海尤顺汽车部件有限公司 | Single valve opened engine auxiliary valve actuator |
| CN104279020A (en) * | 2013-07-10 | 2015-01-14 | 上海尤顺汽车部件有限公司 | Fixing chain type engine valve drive device |
| CN104421009A (en) * | 2013-08-30 | 2015-03-18 | 上海尤顺汽车部件有限公司 | Method for improving low-speed performance of multi-cylinder engine |
| CN104454064A (en) * | 2013-09-19 | 2015-03-25 | 曼卡车和巴士股份公司 | Device and method for actuating at least one exhaust valve of a valve-controlled combustion engine |
| CN109372608A (en) * | 2018-11-27 | 2019-02-22 | 浙江黎明发动机零部件有限公司 | A kind of electromagnetic control type engine braking apparatus |
-
2009
- 2009-08-19 CN CN 200920208106 patent/CN201513208U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100170472A1 (en) * | 2009-01-05 | 2010-07-08 | Zhou Yang | Integrated engine brake with mechanical linkage |
| CN101994539B (en) * | 2009-08-19 | 2012-10-03 | 上海尤顺汽车部件有限公司 | Braking device of engine |
| US9416692B2 (en) | 2011-01-05 | 2016-08-16 | Shanghai Universoon Autoparts Co., Ltd. | Auxiliary valve actuating mechanism of engine |
| WO2012092693A1 (en) * | 2011-01-05 | 2012-07-12 | 上海尤顺汽车部件有限公司 | Auxiliary valve actuating mechanism of engine |
| US9732643B2 (en) | 2011-01-05 | 2017-08-15 | Shanghai Universoon Autoparts Co., Ltd. | Engine valve actuation mechanism for producing a variable engine valve event |
| CN103912336A (en) * | 2013-01-09 | 2014-07-09 | 上海尤顺汽车部件有限公司 | Single valve opened engine auxiliary valve actuator |
| 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 |
| CN104279020A (en) * | 2013-07-10 | 2015-01-14 | 上海尤顺汽车部件有限公司 | Fixing chain type engine valve drive device |
| CN104421009A (en) * | 2013-08-30 | 2015-03-18 | 上海尤顺汽车部件有限公司 | Method for improving low-speed performance of multi-cylinder engine |
| CN104421009B (en) * | 2013-08-30 | 2019-01-15 | 上海尤顺汽车部件有限公司 | Improve the method for multicylinder engine low-speed performance |
| CN104454064A (en) * | 2013-09-19 | 2015-03-25 | 曼卡车和巴士股份公司 | Device and method for actuating at least one exhaust valve of a valve-controlled combustion engine |
| CN109372608A (en) * | 2018-11-27 | 2019-02-22 | 浙江黎明发动机零部件有限公司 | A kind of electromagnetic control type engine braking apparatus |
| CN109372608B (en) * | 2018-11-27 | 2024-03-01 | 浙江黎明智造股份有限公司 | Electromagnetic control type engine braking device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201513208U (en) | Braking device of engine | |
| CN201581950U (en) | Modified engine brake device | |
| CN201513213U (en) | Modified engine brake device | |
| CN201513209U (en) | Engine braking device with low manufacturing cost | |
| CN102588030A (en) | Auxiliary valve driving mechanism of engine | |
| CN203097985U (en) | Engine braking device with special cam for braking single valve | |
| CN202140127U (en) | Driving mechanism of engine braking device | |
| CN102261283A (en) | Fixed chain-type engine brake device | |
| CN201513212U (en) | Modified driving mechanism used for engine braking | |
| CN102003238B (en) | Engine braking device | |
| CN201679528U (en) | Fast braking engine braking gear | |
| CN102003237B (en) | Engine braking improving device | |
| CN201513211U (en) | Novel engine braking device | |
| CN202611787U (en) | Fixed-chain-type special rocker arm brake device | |
| CN201507333U (en) | Drive mechanism for engine brake | |
| CN202140125U (en) | Improved engine braking device | |
| CN101994539B (en) | Braking device of engine | |
| CN103388504B (en) | A kind of solid chain type dedicated rocker arm braking device | |
| CN102003242B (en) | Improved engine brake device | |
| CN201751554U (en) | Solid chain type engine braking device | |
| CN102003236B (en) | Engine brake device with lower manufacture cost | |
| CN201671676U (en) | Improved structure of brake apparatus of engine | |
| CN201513210U (en) | Driving mechanism for engine brake and capable of being integrated with engine | |
| CN102011622B (en) | Improved engine brake driving device | |
| CN102003240B (en) | Improved structure of engine brake device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100623 Effective date of abandoning: 20090819 |