CN202768146U - Four-stroke reciprocating piston type internal-combustion engine - Google Patents
Four-stroke reciprocating piston type internal-combustion engine Download PDFInfo
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- CN202768146U CN202768146U CN 201220304964 CN201220304964U CN202768146U CN 202768146 U CN202768146 U CN 202768146U CN 201220304964 CN201220304964 CN 201220304964 CN 201220304964 U CN201220304964 U CN 201220304964U CN 202768146 U CN202768146 U CN 202768146U
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- locking column
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Abstract
The utility model discloses a four-stroke reciprocating piston type internal-combustion engine comprising a piston, a connecting rod and a crankshaft, wherein an eccentric shaft is sleeved with a connecting rod shaft neck; a connecting rod big head of the connecting rod is connected with the eccentric shaft; a switching and locking mechanism capable of alternately locking the eccentric shaft, the connecting rod big head and a crank of the crankshaft is also arranged on the eccentric shaft; in air suction and exhaust strokes, the eccentric shaft and the connecting rod big head are locked, and the connecting rod big head carries the eccentric shaft to rotate around the connecting rod shaft neck; and in working and compression strokes, the eccentric shaft and the crank are locked, and the connecting rod big head rotates around the eccentric shaft, i.e. the piston stroke in the air suction and exhaust strokes is larger than that in the working and compression strokes. Compared with the prior art, the four-stroke reciprocating piston type internal-combustion engine has the advantage that the stroke of the piston is prolonged in the air suction and exhaust strokes, so that the top of the piston can be completely fitted with the top of an air cylinder to completely exhaust waste gas in the cylinder and reduce the temperature in the air cylinder, more fresh low-temperature air can be sucked in the next air suction stroke, the combustion is full, and the power of the internal-combustion engine is improved.
Description
Technical field
The utility model relates to a kind of four-stroke stroke piston combustion engine.
Background technique
It is to be made of cylinder, piston, connecting rod, bent axle and inlet and exhaust valve, spark plug, oil nozzle of being positioned at cylinder head etc. that present known internal-combustion engine is mainly constructed.The space is the firing chamber between piston top dead center and cylinder head, finishes air-breathing, compression, work done, exhaust four stroke circulation by the rotation of bent axle.
The existing problem of present internal-combustion engine is because piston stroke is fixed, at exhaust stroke end, the residual High Temperature High Pressure waste gas that is equivalent to combustion chamber volume still in the cylinder, toxic emission is not thorough, hinder the air inflow of next suction stroke, limited power ascension and the compression ratio of internal-combustion engine.
The model utility content
Technical problem to be solved in the utility model provides a kind of four-stroke stroke piston combustion engine, thoroughly drains the purpose that exhaust gas inside cylinder, suction stroke suck more low temperature fresh air to reach in exhaust stroke.
In order to solve the problems of the technologies described above, the technological scheme that the utility model adopts is: a kind of four-stroke stroke piston combustion engine, comprise piston, connecting rod and bent axle, piston is connected on the rod journal of bent axle by connecting rod, be socketed with an eccentric shaft at described rod journal, the connnecting rod big end of described connecting rod is connected on this eccentric shaft, also be provided with on the eccentric shaft can be with the crank of eccentric shaft and connnecting rod big end and bent axle between the switching locking framework of locking alternately, in air-breathing and exhaust stroke, eccentric shaft and connnecting rod big end locking, connnecting rod big end is taken eccentric shaft and is rotated around rod journal, in work done and compression stroke, eccentric shaft and crank locking, connnecting rod big end rotates around eccentric shaft, and piston stroke is greater than the piston stroke in work done and compression stroke in air-breathing and exhaust stroke.
Described switching locking framework comprises locking column, the locking column jack of close end position on the outer peripheral surface of described eccentric shaft, a locking column part is inserted in this locking column jack, it is outside that another part is positioned at the locking column jack, be provided with fan-shaped clamping block and a gear coaxial with locking column in the outside of this locking column, be provided with accordingly the draw-in groove of the arc that cooperates with this clamping block at described connecting rod and crank, clamping block is positioned at the end of locking column, and gear is by the rack drives that is located at respectively on connecting rod and the crank.
Described draw-in groove is located on the described connecting rod face relative with crank, and when described piston was in lower dead center, the draw-in groove position on connecting rod and the crank aligned.
Described locking column is provided with two, be located at respectively the position at close two end part on the described eccentric shaft, described switching locking framework also comprises the rectification spring assembly, be provided with the rectification spring eye that is communicated with described locking column jack along the axially extended two ends of eccentric shaft at described eccentric shaft, correcting spring assembly is disposed axially in this rectification spring eye along eccentric shaft, correct the metal abaculus that spring assembly comprises spring and is connected to both ends of the spring, this two metals abaculus is against respectively on the locking column at two ends, the shaft that is positioned at the locking column jack at described locking column is provided with two parallel and symmetrical locking planes, one of them locking plane and described clamping block are positioned at the same side of locking column, the metal abaculus acts on mutually with locking column, when each the switching, described rack and pinion engagement drives the locking column rotation, when the clamping block edge reaches the described draw-in groove mid point that coincide with it with this draw-in groove release, along with being rotated further of this draw-in groove, the second half section of draw-in groove promotes the clamping block edge makes clamping block continue to rotate in another draw-in groove, previous draw-in groove goes out of lock behind the piece, the locking column rotation surpasses 90 degree, the metal abaculus is become when contacting with locking column shaft joint with the locking plane of opposite side from the locking plane contact with locking column one side, the metal abaculus can drive locking column and is rotated further under the pressure of spring, until clamping block and a rear draw-in groove lock fully, this moment, wheel and rack no longer meshed.
The locking column rotary driving force successively divides three parts: 1) offside rack drives; 2) second half section of previous draw-in groove promotes; 3) rotation under the pressure of rectification spring assembly.
If the radian of described clamping block is α, the radian of establishing described draw-in groove is β, and the radian of establishing two interplanar circular arcs of described locking is γ, and π is arranged〉α 〉=γ+(π-β), π〉β 〉=π-(α-γ).
If the length of the tooth bar on described crank and the connecting rod is L, tooth bar is set to take the arc mid point of described draw-in groove to the draw-in groove circle center line connecting as starting point, extend in the place ahead to the draw-in groove running orbit, its length L should be: π r/2＜L≤π r/2+(90o-α/2) π r/180o, r is tooth radius, and the less driving tooth bar of α should be longer.
Described metal abaculus can slide in described rectification spring eye, correspondingly is provided with chute in correcting spring eye.
Described eccentric shaft is divided into thick edge piece and thin edge piece along axis hole, and thick edge piece and thin edge piece are bolted connection, and described switching locking framework is located on this thick edge piece.
Reserve groove at the outstanding position of the corresponding cylinder top of described piston head and exhaust valve corresponding position, in exhaust stroke piston top and cylinder top are fitted fully.
The utility model adopts technique scheme, compared with prior art, this internal-combustion engine prolongs the stroke of piston in air-breathing and exhaust stroke, piston stroke is prolonged reach cylinder head, the outstanding position of the corresponding cylinder top of piston head and exhaust valve corresponding position are reserved groove, piston top can be fitted fully with cylinder top, thoroughly to drain exhaust gas inside cylinder, reduce the temperature in the cylinder, High Temperature High Pressure waste gas can be discharged fully in the cylinder of I. C. engine exhaust stroke end, make the more fresh Cryogenic air of next suction stroke energy inspiration, sufficient combustion promotes power of IC engine; Because mixture temperature reduces in the cylinder, that compression ratio of internal-combustion engine can be designed is higher, further improves power; What suction stroke entered is fresh Cryogenic air fully, and oxygen is sufficient, and fuel combustion is abundant, and exhaust stroke is discharged high-temp waste gas rapidly, harmful gas is generated reduce; This internal-combustion engine has structurally only increased an eccentric shaft and switched locking framework at the skin of rod journal, and is simple in structure.
Description of drawings
Fig. 1 is the structural representation of the eccentric shaft of internal-combustion engine of the present utility model;
Fig. 2 is the structural representation of the locking column of internal-combustion engine of the present utility model;
Fig. 3 is the sectional view of the locking column of internal-combustion engine of the present utility model;
Fig. 4 is the structural representation of the rectification spring assembly of internal-combustion engine of the present utility model;
Fig. 5 is the layout figure of the locking column of internal-combustion engine of the present utility model;
Mark among the above-mentioned figure is: 1, thick edge piece; 2, thin edge piece; 3, bolt hole; 4, locking column jack; 5, correct spring eye; 6, chute; 7, gear; 8, clamping block; 9, locking plane; 10, spring; 11, metal abaculus; 12, draw-in groove; 13, crank; 14, connecting rod; 15, tooth bar.
Embodiment
A kind of four-stroke stroke piston combustion engine of the utility model comprises piston, connecting rod and bent axle, and piston is connected on the rod journal of bent axle by connecting rod.In order to solve problems of the prior art, this internal-combustion engine is socketed with an eccentric shaft at rod journal, rod journal is positioned at the eccentric position of eccentric shaft, the structure of eccentric shaft as shown in Figure 1, the connnecting rod big end of connecting rod is connected on this eccentric shaft, also be provided with on the eccentric shaft can be with the crank 13 of eccentric shaft and connnecting rod big end and bent axle between the switching locking framework of locking alternately, in air-breathing and exhaust stroke, eccentric shaft and connnecting rod big end locking, connnecting rod big end is taken eccentric shaft and is rotated around rod journal, in work done and compression stroke, eccentric shaft and crank 13 lockings, connnecting rod big end rotates around eccentric shaft, thereby makes the stroke of piston alternately prolong and shorten, and namely piston stroke is greater than piston stroke in work done and compression stroke in air-breathing and exhaust stroke.Compared with prior art, this internal-combustion engine prolongs the stroke of piston in air-breathing and exhaust stroke, piston stroke is prolonged reach cylinder head, the outstanding position of the corresponding cylinder top of piston head and exhaust valve corresponding position are reserved groove, piston top can be fitted fully with cylinder top, thoroughly to drain exhaust gas inside cylinder, reduce the temperature in the cylinder, High Temperature High Pressure waste gas can be discharged fully in the cylinder of I. C. engine exhaust stroke end, make the more fresh Cryogenic air of next suction stroke energy inspiration, sufficient combustion promotes power of IC engine; Because mixture temperature reduces in the cylinder, that compression ratio of internal-combustion engine can be designed is higher, further improves power; What suction stroke entered is fresh Cryogenic air fully, and oxygen is sufficient, and fuel combustion is abundant, and exhaust stroke is discharged high-temp waste gas rapidly, harmful gas is generated reduce; This internal-combustion engine has structurally only increased an eccentric shaft and switched locking framework at the skin of rod journal, and is simple in structure.
The switching locking framework of this internal-combustion engine comprises locking column, the structure of locking column as shown in Figures 2 and 3, the locking column jack 4 along eccentric shaft radial of close end position on the outer peripheral surface of eccentric shaft, a locking column part is inserted in this locking column jack 4, another part is positioned at locking column jack 4 outsides, be provided with all coaxial with locking column fan-shaped dashing forward to clamping block 8 and a gear 7 of locking column one side in the outside of this locking column, clamping block 8 is positioned at the end of locking column, be provided with accordingly the draw-in groove 12 of the arc that cooperates with this clamping block 8 at connecting rod 14 and crank 13, as shown in Figure 5, gear 7 is driven by the tooth bar 15 that is located at respectively on connecting rod 14 and the crank 13.Clamping block 8 is arranged on the locking column end, and gear 7 is arranged on the clamping block below, and it is better to drive effect.Tooth bar 15 is located on the relative face of connecting rod 14 and crank 13, and arranges near the position of draw-in groove 12, and tooth bar 15 length should be able to make the locking column rotation surpass 90 degree.When piston was in lower dead center, draw-in groove 12 positions on connecting rod 14 and the crank 13 aligned.When piston during near lower dead center, gear 7 engagements of tooth bar 15 and locking column upper end also can make the locking column rotation reach locking column above 90 degree and produce rotation under the pressure of correcting spring assembly, clamping block 8 rearward draw-in groove 12 rotations on the locking column approach and locking, because clamping block 8 is not concentric circle with the running orbit of draw-in groove 12, so can lock; The arc-shaped slot 12 of crank 13 sides is oppositely arranged with the opening direction of connecting rod 14 side bayonet slots 12, and locking column clamping block 8 before rotation not occuring and break away from tooth bar 15 must be subject to the extruding of offside arc-shaped slot 12 rear ends.It is once overlapping with crank 13 that bent axle whenever revolves the connecting rod 14 that turns around, and the locking direction exchange of locking column once reaches the alternately purpose of locking eccentric.
Locking column is provided with two, be located at respectively the position at close two end part on the eccentric shaft, switch locking framework and also comprise the rectification spring assembly, correct the structure of spring assembly as shown in Figure 4, end face at eccentric shaft is provided with along the axially extended rectification spring eye 5 that is communicated with locking column jack 4 of eccentric shaft, correct spring eye 5 and run through whole eccentric shaft, correcting spring assembly is disposed axially in this rectification spring eye 5 along eccentric shaft, correct the metal abaculus 11 that spring assembly comprises spring 10 and is connected to spring 10 two ends, this two metals abaculus 11 is against respectively on the locking column at two ends in the hole, reduced diameter section at the shaft that is positioned at locking column jack 4 of locking column is provided with two parallel and symmetrical locking planes 9, one of them locking plane 9 and clamping block 8 are positioned at the same side of locking column, another locking plane 9 is positioned at the opposite side of shaft, the top and the bottom on locking plane 9 can be used as limiting stopper on shaft, prevent that metal abaculus 11 from moving up and down.Metal abaculus 11 acts on mutually with locking column, when each the switching, drive the locking column rotation in tooth bar 15 and gear 7 engagements, when the edge of clamping block 8 reaches mid point with its draw-in groove 12 that coincide with these draw-in groove 12 releases, along with being rotated further of this draw-in groove 12, the second half section of draw-in groove 12 promotes clamping block 8 edges continues to another draw-in groove 12 interior rotations clamping block 8, previous draw-in groove 12 goes out of lock behind the piece, the locking column rotation surpasses 90 degree, make metal abaculus 11 from when locking plane 9 contact of locking column one side becomes the position (being the sideline on locking plane 9) that is connected with the locking column shaft with the locking plane 9 of opposite side and contacts, metal abaculus 11 can drive locking column and is rotated further under the pressure of spring 10, until clamping block 8 locks fully with a rear draw-in groove 12, this moment, gear 7 no longer meshed with tooth bar 15.After clamping block 8 snaps in the draw-in groove 12 fully, on metal abaculus 11 under the pressure of spring 10 is against locking plane 9 on the shaft, under the pressure of spring 10, make the locking column trend stable.
If the radian of clamping block 8 is α, the radian of establishing draw-in groove 12 is β, and the radian of establishing the circular arc on 9 on two locking planes is γ, and π is arranged〉α 〉=γ+(π-β), π〉β 〉=π-(α-γ).
If the length of the tooth bar 15 on crank 13 and the connecting rod 14 is L, tooth bar 15 on crank 13 and the connnecting rod big end is separately positioned on the separately front lower place of draw-in groove 12, tooth bar 15 is set to take the arc mid point of draw-in groove 12 to draw-in groove 12 circle center line connectings as starting point, extend in the place ahead to draw-in groove 12 running orbits, its length L should be: π r/2＜L≤π r/2+(90o-α/2) π r/180o, r is tooth radius, and the less driving tooth bar 15 of α should be longer.
As shown in Figure 1, metal abaculus 11 can slide in correcting spring eye 5, correspondingly is provided with chute 6 in correcting spring eye 5.
As shown in Figure 1, eccentric shaft is divided into thick edge piece 1 and Bao Yuan piece 2 along axis hole, is closed by 2 watts of thick edge piece 1 and Bao Yuan pieces to consist of the encirclement rod journal, two ends are connected by four pieces of bolton, thick edge piece 1 and Bao Yuan piece 2 outsides are provided with bolt hole 3, and locking column is provided with two, are located at respectively the place, two ends of thick edge piece 1.The thickest edge of eccentric shaft and the difference of thin edge equal the height of firing chamber.
The working principle of this internal-combustion engine is as follows:
1) during suction stroke, bent axle is rotated down drivening rod 14 and moves down with piston, the thickest edge of eccentric shaft is positioned at the top of connnecting rod big end and locks with connecting rod 14, connecting rod 14 collaborative eccentric shafts are around the rod journal rotation, when piston runs to the below, the gear 7 that the tooth bar 15 that connecting rod 14 and crank 13 approach crank 13 sides when overlapping promotes the locking columns upper end rotates the clamping block 8 of locking column is drawn close to crank 13 sides by the 12 interior disengagings of connecting rod 14 side bayonet slots, rotation is locked into the arc-shaped slot 12 of crank 13 sides fully under the pressure of correcting spring assembly, eccentric shaft and crank 13 lockings.2) during compression stroke connnecting rod big end around the eccentric shaft rotation, pushing piston upwards moves pressurized air, when 13 one-tenth 180 degree positions of connecting rod 14 and crank, the thickest edge of eccentric shaft is positioned at the below of connnecting rod big end because eccentric shaft and crank 13 have locked, the shorten length of connecting rod 14, piston stroke shortens can not arrive cylinder head, thereby forms the firing chamber between cylinder top and piston top.3) when the burning expansion space stroke, piston promotes connecting rod 14 and moves downwards, connnecting rod big end rotarily drives bent axle around eccentric shaft and is rotated down, when connecting rod 14 runs to below and crank 13 when overlapping, gear 7 rotations that tooth bar 15 on the connecting rod 14 promotes the locking column upper end make the clamping block 8 of locking column draw close by crank 13 side bayonet slots, 12 interior disengagings and to connecting rod 14 draw-in grooves 12, the locking column rotation is locked in the draw-in groove 12 of connecting rod 14 fully under the pressure of correcting spring assembly, eccentric shaft and connecting rod 14 lockings.4) during exhaust stroke, bent axle rotates up, connecting rod 14 collaborative eccentric shafts are together around the rod journal rotation, pushing piston is operation upwards, because the thickest edge of eccentric shaft is positioned at the top of connnecting rod big end, and it is elongated to be equivalent to connecting rod 14 length, the piston stroke maximum moves to cylinder head when connecting rod 14 and crank are spent for 13 one-tenth 180, chamber cavity originally disappears, and waste gas is discharged fully.
The above has carried out exemplary description to the utility model by reference to the accompanying drawings; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technological scheme carry out; or without improving design of the present utility model and technological scheme are directly applied to other occasion, all within protection domain of the present utility model.
Claims (9)
1. four-stroke stroke piston combustion engine, comprise piston, connecting rod and bent axle, piston is connected on the rod journal of bent axle by connecting rod, it is characterized in that: be socketed with an eccentric shaft at described rod journal, the connnecting rod big end of described connecting rod is connected on this eccentric shaft, also be provided with on the eccentric shaft can be with the crank of eccentric shaft and connnecting rod big end and bent axle between the switching locking framework of locking alternately, in air-breathing and exhaust stroke, eccentric shaft and connnecting rod big end locking, connnecting rod big end is taken eccentric shaft and is rotated around rod journal, in work done and compression stroke, eccentric shaft and crank locking, connnecting rod big end rotates around eccentric shaft, and piston stroke is greater than the piston stroke in work done and compression stroke in air-breathing and exhaust stroke.
2. four-stroke stroke piston combustion engine according to claim 1, it is characterized in that: described switching locking framework comprises locking column, the locking column jack of close end position on the outer peripheral surface of described eccentric shaft, a locking column part is inserted in this locking column jack, it is outside that another part is positioned at the locking column jack, be provided with fan-shaped clamping block and a gear coaxial with locking column in the outside of this locking column, be provided with accordingly the draw-in groove of the arc that cooperates with this clamping block at described connecting rod and crank, clamping block is positioned at the end of locking column, and gear is by the rack drives that is located at respectively on connecting rod and the crank.
3. four-stroke stroke piston combustion engine according to claim 2, it is characterized in that: described draw-in groove is located on the described connecting rod face relative with crank, and when described piston was in lower dead center, the draw-in groove position on connecting rod and the crank aligned.
4. according to claim 2 or 3 described four-stroke stroke piston combustion engines, it is characterized in that: described locking column is provided with two, be located at respectively the position at close two end part on the described eccentric shaft, described switching locking framework also comprises the rectification spring assembly, be provided with the rectification spring eye that is communicated with described locking column jack along the axially extended two ends of eccentric shaft at described eccentric shaft, correcting spring assembly is disposed axially in this rectification spring eye along eccentric shaft, correct the metal abaculus that spring assembly comprises spring and is connected to both ends of the spring, this two metals abaculus is against respectively on the locking column at two ends, the shaft that is positioned at the locking column jack at described locking column is provided with two parallel and symmetrical locking planes, one of them locking plane and described clamping block are positioned at the same side of locking column, the metal abaculus acts on mutually with locking column, when each the switching, described rack and pinion engagement drives the locking column rotation, when the clamping block edge reaches the described draw-in groove mid point that coincide with it with this draw-in groove release, along with being rotated further of this draw-in groove, the second half section of draw-in groove promotes the clamping block edge makes clamping block continue to rotate in another draw-in groove, previous draw-in groove goes out of lock behind the piece, the locking column rotation surpasses 90 degree, the metal abaculus is become when contacting with locking column shaft joint with the locking plane of opposite side from the locking plane contact with locking column one side, the metal abaculus can drive locking column and is rotated further under the pressure of spring, until clamping block and a rear draw-in groove lock fully, this moment, wheel and rack no longer meshed.
5. four-stroke stroke piston combustion engine according to claim 4, it is characterized in that: the radian of establishing described clamping block is α, if the radian of described draw-in groove is β, if the radian of two interplanar circular arcs of described locking is γ, π is arranged〉α 〉=γ+(π-β), π〉β 〉=π-(α-γ).
6. four-stroke stroke piston combustion engine according to claim 5, it is characterized in that: the length of establishing the tooth bar on described crank and the connecting rod is L, tooth bar is set to take the arc mid point of described draw-in groove to the draw-in groove circle center line connecting as starting point, extend in the place ahead to the draw-in groove running orbit, its length L should be: π r/2＜L≤π r/2+(90o-α/2) π r/180o, r is tooth radius, and the less driving tooth bar of α should be longer.
7. four-stroke stroke piston combustion engine according to claim 6, it is characterized in that: described metal abaculus can slide in described rectification spring eye, correspondingly is provided with chute in correcting spring eye.
8. four-stroke stroke piston combustion engine according to claim 7, it is characterized in that: described eccentric shaft is divided into thick edge piece and thin edge piece along axis hole, and thick edge piece and thin edge piece are bolted connection, and described switching locking framework is located on this thick edge piece.
9. four-stroke stroke piston combustion engine according to claim 7 is characterized in that: reserve groove at the outstanding position of the corresponding cylinder top of described piston head and exhaust valve corresponding position, in exhaust stroke piston top and cylinder top are fitted fully.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220304964 CN202768146U (en) | 2012-06-27 | 2012-06-27 | Four-stroke reciprocating piston type internal-combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220304964 CN202768146U (en) | 2012-06-27 | 2012-06-27 | Four-stroke reciprocating piston type internal-combustion engine |
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| Publication Number | Publication Date |
|---|---|
| CN202768146U true CN202768146U (en) | 2013-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220304964 Expired - Lifetime CN202768146U (en) | 2012-06-27 | 2012-06-27 | Four-stroke reciprocating piston type internal-combustion engine |
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| Country | Link |
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| CN (1) | CN202768146U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733945A (en) * | 2012-06-27 | 2012-10-17 | 苏成胜 | Four-stroke reciprocating piston type internal-combustion engine |
-
2012
- 2012-06-27 CN CN 201220304964 patent/CN202768146U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733945A (en) * | 2012-06-27 | 2012-10-17 | 苏成胜 | Four-stroke reciprocating piston type internal-combustion engine |
| CN102733945B (en) * | 2012-06-27 | 2014-08-13 | 苏成胜 | Four-stroke reciprocating piston type internal-combustion engine |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130306 Effective date of abandoning: 20140813 |
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| RGAV | Abandon patent right to avoid regrant |