CN202850504U - Constant force stretch-draw device in the range of finite length - Google Patents
Constant force stretch-draw device in the range of finite length Download PDFInfo
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- CN202850504U CN202850504U CN 201220487876 CN201220487876U CN202850504U CN 202850504 U CN202850504 U CN 202850504U CN 201220487876 CN201220487876 CN 201220487876 CN 201220487876 U CN201220487876 U CN 201220487876U CN 202850504 U CN202850504 U CN 202850504U
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- stretch
- constant force
- fixed end
- spring
- coupling
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Abstract
The utility model discloses a constant force stretch-draw device in the range of a finite length. The constant force stretch-draw device in the range of the finite length is arranged between a first fixing end and a second fixing end, wherein the first fixing end is connected with the second fixing end in a sliding mode. The constant force stretch-draw device in the range of the finite length comprises a stretch-draw mechanism, a support, a rocker arm and a connecting rod, wherein the stretch-draw mechanism is arranged on the first fixing end, the support is used for fixing one end of the stretch-draw mechanism, the rocker arm is arranged on the support and the connecting rod is connected between the rocker arm and second fixing end. The rocker arm is provided with a center supporting shaft, a second connecting shaft and a first connecting shaft, wherein the center supporting shaft is connected with the support in a hinged mode, the second connecting shaft is connected with the other end of the stretch-draw mechanism in the hinged mode and the first connecting shaft is connected with the connecting rod. The rocker arm further comprises an inner support which is used for fixing the other end of the stretch-draw mechanism. The inner support is connected with the other end of the stretch-draw mechanism in the hinged mode. By using a rocker arm mechanism with two connecting points and a supporting point, wherein an included angle between the two connecting points and the supporting point is from 110 degrees to 120 degrees, the relationship between the arm length of a first connecting point and change of spring force is presented to be in a direct ratio relationship close to a line, and thereby change of produced final stretch-draw force is kept in a little range and the purpose of constant force stretch-draw is achieved. The constant force stretch-draw device in the range of the finite length has the advantages of being simple in structure, easy to manufacture and process, low in cost and worth popularizing for construction of steel structure.
Description
Technical field
The utility model relates to a kind of tensioning equipment for building structure, and particularly during a kind of telescopic variation in building structure generation certain-length scope, its stretching force can keep getting comparatively constant tensioning equipment.
Background technology
Steel structure beam is the both sides glass curtain wall and steel structure system that connects agent structure.Because temperature Change is larger, the larger variation of the corresponding generation of its length of connecting cross beam, when crossbeam length reaches about 40 meters, the nearly 30mm of maximum changing value.The sectional area of connecting cross beam is larger, and when temperature was low, its pulling force was too large, can cause agent structure to damage, and during maximum temperature, elongation too much, the glass curtain wall and steel structure system breaks away from agent structure.
Therefore, be necessary to design a kind of device, can effectively eliminate change in length and can keep connecting cross beam the both sides glass curtain wall and steel structure to be reached the constant pulling force of designing requirement.
The utility model content
The purpose of this utility model is to overcome the deficiency that has thermal expansion between the steel work of prior art, constant force tensioning equipment in a kind of finite length scope is provided, and it can effectively be eliminated the change in length of crossbeam (or rope) and can keep connecting cross beam the both sides glass curtain wall and steel structure to be reached the constant pulling force of designing requirement.
For achieving the above object, the utility model is by the following technical solutions:
Constant force tensioning equipment in the finite length scope, described constant force tensioning equipment is located between the first fixed end and the second fixed end that is slidingly connected; Described stopping means comprises the stretch-draw mechanism that is located on the first fixed end, be used for fixing stretch-draw mechanism one end bearing, be located at the rocking arm on the bearing, and be connected in the coupling bar between rocking arm and the second fixed end; Described rocking arm be provided with the central support shaft that connects with bearing hinge, with the second coupling spindle of an end hinge-coupled of stretch-draw mechanism and the first coupling spindle that connects with coupling bar; Also comprise for the fixing interior bearing of the stretch-draw mechanism other end; The other end hinge-coupled of described interior bearing and stretch-draw mechanism.
Its further technical scheme is: being slidingly connected of the first fixed end and the second fixed end is horizontal direction; The line of central support shaft to the second coupling spindle becomes 110 °～120 ° with the line of centres of central support shaft to the first coupling spindle.
Its further technical scheme is: when described the first fixed end and the second fixed end are positioned at beeline, the line of centres of central support shaft to the first coupling spindle and horizon are 10 °, and the line of centres of central support shaft to the second coupling spindle and vertical curve are 10 °～20 ° to the stretch-draw mechanism outside; When described the first fixed end and the second fixed end were positioned at longest distance, the line of central support shaft to the first coupling spindle and horizon were 30 °～50 °, and the line of central support shaft to the second coupling spindle and vertical curve are 10 °～20 ° to stretch-draw mechanism inboard.
Its further technical scheme is: described stretch-draw mechanism comprise the spring fixed seat that connects with interior bearing hinge, with the spring sliding seat of rocking arm hinge-coupled, and be sheathed on spring on the spring fixed seat.
Its further technical scheme is: described spring fixed seat comprises the otic placode that connects with interior bearing hinge and the sleeve member that connects with otic placode, sleeve member is arranged with spring outward, sleeve member also is provided be used to the center cavity that penetrates the spring sliding seat, described spring sliding seat comprises center rod and is set in the Coupling of center rod one end, is provided with adjusting nut and locking nut between described Coupling and the center rod; Described center rod one end is provided with for the threaded portion, the other end and the second coupling spindle hinge-coupled that connect adjusting nut and locking nut.
Its further technical scheme is: described spring is disk spring, and quantity is several.
Its further technical scheme is: described coupling bar comprises fixed end connection part, rocking arm end connection part, and holds the regulating sleeve of connection part and rocking arm end connection part for being connected and fixed.
Its further technical scheme is: described bearing is two, comprises left support abutment and right support abutment, and described rocking arm comprises left rocking arm, right rocking arm, reaches described the second coupling spindle, the first coupling spindle; Left rocking arm is provided with the LC bolster with the left support abutment hinge-coupled, and right rocking arm is provided with the right heart bolster with the right support abutment hinge-coupled; Described the second coupling spindle and stretch-draw mechanism hinge-coupled, described the first coupling spindle and coupling bar hinge-coupled.
Its further technical scheme is: described the first fixed end is provided with two and connects support plate, and passes the 3rd coupling spindle that being used between two connection support plates connects with stretch-draw mechanism; Described the second fixed end is provided with two and connects seat board, and passes the tetrad spindle that being used between two connection seat boards connects with coupling bar.
Its further technical scheme is: described the first fixed end is the short beam that is fixedly connected with the main body steel work, and described the second fixed end is the crossbeam that is fixedly connected with another main body steel work; Described short beam and crossbeam connect together movably.
The utility model beneficial effect compared with prior art is: it (is the O among Fig. 1 that the utility model utilization has two interfaces
1And O
2And structure chart in the first coupling spindle and the second coupling spindle) with supporting-point (be the O among Fig. 1, and the central support shaft in the structure chart) angle is 110 °～120 ° rocker structure, and (i.e. the first coupling spindle produces the application point O of final stretching force to make the first connection place
1) brachium and the variation of spring force present and be similar to linear proportional relation, thereby keep comparatively among a small circle variation so that produce final stretching force, realize the purpose of constant force stretch-draw.The utility model is simple in structure, easily makes processing, and cost is low, is worth promoting in construction steel structure.
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Description of drawings
Fig. 1 is the stressed schematic diagram of two interfaces of the constant force tensioning equipment specific embodiment in the utility model finite length scope;
Fig. 2 is the schematic diagram of the constant force tensioning equipment specific embodiment in the utility model finite length scope;
Fig. 3 is the structure chart (sectional view of center comprises short beam and crossbeam) that the constant force tensioning equipment in the utility model finite length scope is applied to the specific embodiment on the crossbeam of steel work;
Fig. 4 is stereogram embodiment illustrated in fig. 3;
Fig. 5 is coupling bar part stereogram embodiment illustrated in fig. 3;
Fig. 6 is stretch-draw mechanism part stereogram embodiment illustrated in fig. 3;
Fig. 7 is the sectional view of the center of Fig. 6;
Fig. 8 is rocking arm and seat part sequential Stereoscopic figure embodiment illustrated in fig. 3;
Fig. 9 is right rocking arm lateral plan embodiment illustrated in fig. 3;
Figure 10 is the A-A sectional view of Fig. 9.
Description of reference numerals
A main body steel work B main body steel work
10 constant force tensioning equipments, 21 short beams
22 crossbeams 221 connect seat board
222 tetrad spindles, 30 stretch-draw mechanisms
31 spring fixed seats, 311 otic placodes
312 sleeve members, 313 center cavities
32 spring sliding seat, 321 center rod
322 Couplings, 323 adjusting nuts
324 locking nuts, 33 disk springs
40 bearings, 41 left support abutments
42 right support abutments, 50 rocking arms
The right rocking arm of the left Rocker arm 5 0B of 50A
The right heart bolster of 51A LC bolster 51B
51 central support shafts, 52 first coupling spindles
53 second coupling spindles, 60 coupling bars
61 fixed end connection parts, 62 regulating sleeves
63 rocking arm end connection parts, 70 interior bearings
71 connect support plate 72 the 3rd coupling spindle
3211 threaded portions, 3221 annular chambers
The specific embodiment
In order to more fully understand technology contents of the present utility model, below in conjunction with specific embodiment the technical solution of the utility model is further introduced and explanation, but be not limited to this.
As shown in Figure 1, be the force analysis schematic diagram of the constant force tensioning equipment in the utility model finite length scope.Wherein, O is fixed point bearing pin (being central support shaft); By O
1, O, O
2The rocking arm that forms can rotate O around the O axle
1(i.e. the first coupling spindle), O
2((i.e. the second coupling spindle) point all has rotating bearing pin; F
1The required constant stretching force of horizontal direction, F
2The motive force of spring, O O
1It is the brachium of stretching force; O O
2It is the brachium of spring thrust; OX and OO
1The angle α that forms is OO
1The initial angle of arm, choosing value are generally 10 ° ~ 15 ° °; OY is perpendicular to OX; O
1The position that is arrived by stretch-draw when the maximum temperature by the crossbeam of stretch-draw (or rope); O
1' by the residing position of the crossbeam of stretch-draw (or rope) stretch-draw when temperature is minimum; O
1O
1' in the horizontal direction distance namely be crossbeam (or rope) from temperature minimum when the highest the size of variable quantity (variable quantity the is called stroke) range of length be that crossbeam is subjected to temperature to affect the change in length maximum value.In whole process, be to utilize the thrust of spring to keep stretching force F
1Substantially constant is constant.
The utility model is to utilize OO
1Be rotated clockwise to OO around the O point
1', when namely excursion was the β angle, its sine value and angle changed the characteristic of approximate proportional relation and set.Known F by Fig. 1
1Brachium OO to the fixed bias circuit O arm of force
1Sine value with OX institute angle.The angle of (alpha+beta) increases when crossbeam shortens, F
1The arm of force increases; While OO
2Also and then rotation, further Compress Spring, the elastic force of spring increases, and has offset F
1F is kept in the variation that the arm of force increases
1Constant, vice versa.From Structure Mechanism as can be known, when crossbeam (or rope) shortened, crossbeam (or rope) convergent force was active force, forces spring-compressed, and spring force increases; When the crossbeam elongation, the thrust of spring is active force.Eliminate the crossbeam elongated portion, spring force reduces.Satisfy stretching force F in the whole change procedure
1* F
1The arm of force of ordering to O=spring thrust F
2* F
2To the arm of force that O is ordered, F
1The arm of force increases, F
2Spring force increases, F
1The arm of force reduces, F
2Spring force reduces, and keeps F
1Substantially constant.
As shown in Figure 2, be size and a stressing conditions that needs the specific embodiment of 50 tons of stretching forces.For guaranteeing stretching force F
1Deviation is not more than 5%, rocking arm stretch-draw arm OO
1With the OX initial angle be 10 °, turn clockwise that change to change peak discharge be 35 °, i.e. alpha+beta=45 °; Stretching force F
1Be designed to approximately 50 tons of 498KN() crossbeam environment of living in, temperature from minimum in the highest situation of temperature its change in length value be about 30mm(and also claim range).Calculate OO by range
1=110mm; F
2Brachium OO
2That calculation of parameter according to spring draws,, disk spring selects D=250mmd=127mm t=14mm h in the example
o=5.6mm works as decrement f=4.2mm, spring force P=249KN, and the disc spring film number: 24, the maximum compressibility of selecting spring in this example is 4.8mm, then the elastic force P=284.57KN of spring.According to F
1=498KNF
2=284.57KN; F then
2Brachium
Round numbers OO
2Its stroke of=143mm is: 2 * 143 * sin17.5 °=86mm
Spring force when disk spring is in required minimum spring force in the mechanism is 69.75KN, i.e. F
2=69.75KN, then
Spring force was 282KN, i.e. F when disk spring was in the mechanism required range
2=282KN, then
As arm OO
1When rotating 17.5 °, disk spring is in whole stroke centre position, and spring force is F for (69.75+282)/2=175.88KN
2=175.88KN, then
By above-mentioned calculating as can be known: F
1Deviation is no more than 3KN in whole stroke, and namely deviation is about 6 ‰.
In other embodiment, can comply with needed different stretching forces, with different deformation displacement amounts, determine the waving angle β of start angle α and rocking arm, and the length of stretch-draw arm and spring arm.Wherein, the angular range that can select is: when the first fixed end and the second fixed end are positioned at beeline, the line of centres of central support shaft to the first coupling spindle and horizon (being the α angle among Fig. 1) are 5 °～10 °, and the line of centres of central support shaft to the second coupling spindle and vertical curve are for to 10 °～20 ° of the stretch-draw mechanism outside (being the β/2 jiaos on OY line right side among Fig. 1); When the first fixed end and the second fixed end are positioned at longest distance, the line of central support shaft to the first coupling spindle and horizon are 30 °～50 ° (being the alpha+beta/2 among Fig. 1), and the line of central support shaft to the second coupling spindle and vertical curve are for to 10 °～20 ° of stretch-draw mechanism inboard (being the β/2 jiaos in OY line left side among Fig. 1).The length of the arm of force is then selected according to the needs of stretching force.
To shown in Figure 10, be the concrete structure explanation of the constant force tensioning equipment in the utility model finite length scope such as Fig. 3.Constant force tensioning equipment 10 is located between the first fixed end and the second fixed end that is slidingly connected, and wherein, the first fixed end is short beam 21, the second fixed ends that are fixedly connected with the main body steel work A crossbeam 22 for being fixedly connected with another main body steel work B; Short beam 21 connects together movably with crossbeam 22.
Constant force stopping means 10 comprises the stretch-draw mechanism 30 that is located on the short beam 21, be used for fixing stretch-draw mechanism 30 1 ends bearing 40, be located at the Rocker arm 50 on the bearing 40, and be connected in the coupling bar 60 between Rocker arm 50 and the crossbeam 22; Rocker arm 50 be provided with the central support shaft 51 of bearing 40 hinge-coupled, with the second coupling spindle 53 of an end hinge-coupled of stretch-draw mechanism 30 and the first coupling spindle 52 that connects with coupling bar 60; Also comprise for the fixing interior bearing 70 of stretch-draw mechanism 30 other ends; The other end (the being fixed end) hinge-coupled of interior bearing 70 and stretch-draw mechanism 30.
Short beam 21 is horizontal direction with being slidingly connected of crossbeam 22; The line of central support shaft to the second coupling spindle becomes 117.5 ° (namely 10 °+90 °+17.5 °) with the line of centres of central support shaft to the first coupling spindle.
Stretch-draw mechanism 30 comprise with the spring fixed seat 31 of interior bearing 70 hinge-coupled, with the spring sliding seat 32 of Rocker arm 50 hinge-coupled, and be sheathed on the spring of the inner chamber of the cylindrical of spring fixed seat and spring sliding seat.Spring is disk spring 33, and quantity is 24.
Spring fixed seat 31 comprises that in otic placode 311(the present embodiment with interior bearing 70 hinge-coupled be two) and the sleeve member 312 that connects with otic placode 311, the sleeve member 312 outer disk springs 33 that are arranged with, sleeve member 312 also is provided be used to the center cavity 313 that penetrates spring sliding seat 32, spring sliding seat 32 comprises center rod 321 and is set in the Coupling 322 of center rod 321 1 ends, is provided with adjusting nut 323 and locking nut 324 between Coupling 322 and the center rod 321; Center rod 321 1 ends are provided with for the threaded portion 3211, the other end and the second coupling spindle 53 hinge-coupled that connect adjusting nut 323 and locking nut 324.Coupling 322 is provided with the annular chamber 3221(that is inserted in disk spring 33 disk spring is positioned).
Coupling bar 60 comprises fixed end connection part 61, rocking arm end connection part 63, and for the regulating sleeve 62 of end connection part 61 with rocking arm end connection part 63 that be connected and fixed.
Bearing 40 is two, comprises left support abutment 41 and right support abutment 42, and Rocker arm 50 comprises left Rocker arm 5 0A, right Rocker arm 5 0B, and is used for connecting the second coupling spindle 53, the first coupling spindle 52 of left Rocker arm 5 0A and right Rocker arm 5 0B; Left Rocker arm 5 0A is provided with the LC bolster 51A with left support abutment 41 hinge-coupled, and right Rocker arm 5 0B is provided with the right heart bolster 51B with right support abutment 42 hinge-coupled; The second coupling spindle 53 and center rod 321 hinge-coupled, rocking arm end connection part 62 hinge-coupled of the first coupling spindle 52 and coupling bar 60.The structure stress of this bearing and rocking arm is even, and is simple in structure, handling ease, and can make larger dimensional structure, be easy to the stretching force that provides enough.
Be provided with two in the short beam 21 and connect support plate 71, and pass the 3rd coupling spindle 72 that being used between two connection support plates 71 connects with two otic placodes 311 of spring fixed seat 31, consisted of interior bearing 70 with this.Crossbeam 22 is provided with two and connects seat board 221, and passes the tetrad spindle 222 that being used between two connection seat boards 221 connects with the fixed end connection part 61 of coupling bar 60.
In sum, to have two interfaces (be the O among Fig. 1 in the utility model utilization
1And O
2And structure chart in the first coupling spindle and the second coupling spindle) with supporting-point (be the O among Fig. 1, and the central support shaft in the structure chart) angle is 110 °～120 ° rocker structure, and (i.e. the first coupling spindle produces the application point O of final stretching force to make the first connection place
1) brachium and the variation of spring force present and be similar to linear proportional relation, thereby keep comparatively among a small circle variation so that produce final stretching force, realize the purpose of constant force stretch-draw.The utility model is simple in structure, easily makes processing, and cost is low, is worth promoting in construction steel structure.
Above-mentionedly only further specify technology contents of the present utility model with embodiment; so that the reader is more readily understood; but do not represent embodiment of the present utility model and only limit to this, any technology of doing according to the utility model is extended or recreation, all is subjected to protection of the present utility model.Protection domain of the present utility model is as the criterion with claims.
Claims (10)
1. the constant force tensioning equipment in the finite length scope, described constant force tensioning equipment is located between the first fixed end and the second fixed end that is slidingly connected; It is characterized in that described stopping means comprise the stretch-draw mechanism that is located on the first fixed end, be used for fixing stretch-draw mechanism one end bearing, be located at the rocking arm on the bearing, and be connected in the coupling bar between rocking arm and the second fixed end; Described rocking arm be provided with the central support shaft that connects with bearing hinge, with the second coupling spindle of an end hinge-coupled of stretch-draw mechanism and the first coupling spindle that connects with coupling bar; Also comprise for the fixing interior bearing of the stretch-draw mechanism other end; The other end hinge-coupled of described interior bearing and stretch-draw mechanism.
2. the constant force tensioning equipment in the finite length scope according to claim 1 is characterized in that being slidingly connected of described the first fixed end and the second fixed end is horizontal direction; The line of central support shaft to the second coupling spindle becomes 110 °～120 ° with the line of centres of central support shaft to the first coupling spindle.
3. the constant force tensioning equipment in the finite length scope according to claim 2, when it is characterized in that described the first fixed end and the second fixed end are positioned at beeline, the line of centres of central support shaft to the first coupling spindle and horizon are 10 °, and the line of centres of central support shaft to the second coupling spindle and vertical curve are 10 °～20 ° to the stretch-draw mechanism outside; When described the first fixed end and the second fixed end were positioned at longest distance, the line of central support shaft to the first coupling spindle and horizon were 30 °～50 °, and the line of central support shaft to the second coupling spindle and vertical curve are 10 °～20 ° to stretch-draw mechanism inboard.
4. the constant force tensioning equipment in the finite length scope according to claim 1, it is characterized in that described stretch-draw mechanism comprise the spring fixed seat that connects with interior bearing hinge, with the spring sliding seat of rocking arm hinge-coupled, and be sheathed on spring on the spring fixed seat.
5. the constant force tensioning equipment in the finite length scope according to claim 4, it is characterized in that described spring fixed seat comprises the otic placode that connects with interior bearing hinge and the sleeve member that connects with otic placode, sleeve member is arranged with spring outward, sleeve member also is provided be used to the center cavity that penetrates the spring sliding seat, described spring sliding seat comprises center rod and is set in the Coupling of center rod one end, is provided with adjusting nut and locking nut between described Coupling and the center rod; Described center rod one end is provided with for the threaded portion, the other end and the second coupling spindle hinge-coupled that connect adjusting nut and locking nut.
6. the constant force tensioning equipment in the finite length scope according to claim 4 is characterized in that described spring is disk spring, and quantity is several.
7. the constant force tensioning equipment in the finite length scope according to claim 1 is characterized in that described coupling bar comprises fixed end connection part, rocking arm end connection part, and holds the regulating sleeve of connection part and rocking arm end connection part for being connected and fixed.
8. the constant force tensioning equipment in the finite length scope according to claim 1 is characterized in that described bearing is two, comprises left support abutment and right support abutment, and described rocking arm comprises left rocking arm, right rocking arm, reaches described the second coupling spindle, the first coupling spindle; Left rocking arm is provided with the LC bolster with the left support abutment hinge-coupled, and right rocking arm is provided with the right heart bolster with the right support abutment hinge-coupled; Described the second coupling spindle and stretch-draw mechanism hinge-coupled, described the first coupling spindle and coupling bar hinge-coupled.
9. the constant force tensioning equipment in the finite length scope according to claim 1 is characterized in that described the first fixed end is provided with two and connects support plate, and passes the 3rd coupling spindle that being used between two connection support plates connects with stretch-draw mechanism; Described the second fixed end is provided with two and connects seat board, and passes the tetrad spindle that being used between two connection seat boards connects with coupling bar.
10. the constant force tensioning equipment in the finite length scope according to claim 1 is characterized in that described the first fixed end is the short beam that is fixedly connected with the main body steel work, and described the second fixed end is the crossbeam that is fixedly connected with another main body steel work; Described short beam and crossbeam connect together movably.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220487876 CN202850504U (en) | 2012-09-24 | 2012-09-24 | Constant force stretch-draw device in the range of finite length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220487876 CN202850504U (en) | 2012-09-24 | 2012-09-24 | Constant force stretch-draw device in the range of finite length |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202850504U true CN202850504U (en) | 2013-04-03 |
Family
ID=47981716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220487876 Withdrawn - After Issue CN202850504U (en) | 2012-09-24 | 2012-09-24 | Constant force stretch-draw device in the range of finite length |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202850504U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852232A (en) * | 2012-09-24 | 2013-01-02 | 深圳市三鑫幕墙工程有限公司 | Constant-force tensioning device within limited length range |
-
2012
- 2012-09-24 CN CN 201220487876 patent/CN202850504U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852232A (en) * | 2012-09-24 | 2013-01-02 | 深圳市三鑫幕墙工程有限公司 | Constant-force tensioning device within limited length range |
| CN102852232B (en) * | 2012-09-24 | 2015-01-07 | 深圳市三鑫幕墙工程有限公司 | Constant-force tensioning device within limited length range |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130403 Effective date of abandoning: 20150107 |
|
| RGAV | Abandon patent right to avoid regrant |