CN101551222A - Method for measuring diameter of ring groove - Google Patents
Method for measuring diameter of ring groove Download PDFInfo
- Publication number
- CN101551222A CN101551222A CNA2008100695378A CN200810069537A CN101551222A CN 101551222 A CN101551222 A CN 101551222A CN A2008100695378 A CNA2008100695378 A CN A2008100695378A CN 200810069537 A CN200810069537 A CN 200810069537A CN 101551222 A CN101551222 A CN 101551222A
- Authority
- CN
- China
- Prior art keywords
- groove
- measuring
- pin
- flange
- vernier caliper
- 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.)
- Granted
Links
Images
Abstract
The invention relates to a method for measuring the diameter of a ring groove, which comprises an installing method and a detecting method. The measuring method comprises the following steps: placing the lower surface of the body of a vernier caliper on the top surface of a sizing block positioned on a flat plate, and making two outside tips vertically hang at two sides of the sizing block; fitting the bottom surface of the lower flanges of the measuring tips sleeved on the tips with the flat plate, and tightly screwing fastening bolts; when detecting, inserting the flanges of the two measuring tips from two sides of a measured ring groove until the flanges touch the bottom of the groove; finding the maximum value D2 generated when the shaft axis of the two measuring tips and the shaft axis of the measured ring groove are in the same plane; comparing the reading D2 with the standard value D1 of a block gage which is previously measured; and then, judging whether the measured value is within the tolerance limit or not. Each measuring tip comprises a column shaft provided with an axial through groove, and a coaxial thin disc-shaped flange positioned at the bottom end of the column shaft. The invention can accurately and conveniently detect the diameters of inner ring grooves and outer ring grooves of different sizes to meet the detection requirements of various workpieces.
Description
Technical field
The present invention relates to a kind of measuring method, relate in particular to a kind of measuring method that detects inside and outside annular groove diameter.
Background technology
At present, for the outer groove of processing on external cylindrical surface and the inner groove in the endoporus, also do not have a kind of simple and easy to do, measure measuring method accurately.As piston ring as one of vital part of internal combustion engine, have oil ring groove and compression on its outer round surface, in order to oil ring and compression ring to be installed, oil ring groove and compression are referred to as piston ring groove, piston ring groove needs control, detection ring groove depth, for ease of measuring, be that control, the body diameter that detects the piston ring groove bottom surface are groove bottom diameter in reality processing.At present, in production and batch detection, there is special measuring tools such as utilizing clamp that the body diameter of piston ring groove bottom surface is detected, but the piston that the piston ring groove of different designs size or specifications and models are different, need to use the different special-purpose clamp of size, thereby this kind metering system can not be applicable to the detection in the sampling observation personnel that detect footpath annular groove of the different ends or single-piece, the small serial production.The sampling observation personnel insert two slip gauges that are narrower than piston ring groove the annular groove from the symmetria bilateralis of piston, and are inconsistent until slip gauge side and bottom land, use vernier caliper measurement to go out to comprise the length value of two slip gauge width dimensions then.But the general width with tested annular groove of the thickness of slip gauge is not complementary, and slip gauge two upper and lower surfaces and annular groove sidewall have bigger gap, thereby the upper and lower surface of slip gauge is difficult for paralleling with the top and bottom sidewall of annular groove, causes measurement inaccurate in the groove medium dip easily; And two slip gauge must be parallel to each other and tangent at length direction with the face of cylinder at the bottom of the annular groove, but two slip gauge inconvenience hold, are easily splayed when measuring, and have deflection just to cause slightly to measure inaccurate.In addition, because of only using the narrow side of slip gauge as measurement face, two sides very easily are worn, and this uneven wearing and tearing form groove on slip gauge, not only make dimensional measurement inaccurate, and cause the destruction to slip gauge.Also need the diameter dimension of annular groove is detected for the inner groove in some cylinder body, the processor generally relies on the feed of lathe scale to guarantee indirectly, brings very big inconvenience to the processor.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of measuring method that detects diameter of ring groove, and it can detect the diameter of ring groove of different size accurately, easily.
Technical scheme of the present invention is as follows: comprise installation method and detection method, it is characterized in that, carry out according to following steps: (one) installation method, A, on flat board, place a contour parallels, the outer survey card base of vernier caliper is inserted respectively in the groove of left and right measurement pin, make two to measure footmuff on the outer survey card base of described vernier caliper, the height of described contour parallels is described outer 1.2～1.6 times of surveying card base length; B, the blade lower surface of described vernier caliper is placed on the end face of described contour parallels, and two outer survey card bases that make described vernier caliper vertically are positioned at the both sides of described contour parallels vacantly, adjusting described two measurement pin fits flange bottom surface and the described flat board measured on the pin, keep this fit-state and tighten trip bolt on the left and right measurement pin, make and survey the rear surface of card base and the groove trailing flank in the described left and right measurement pin fits fixing outward;
Described measurement pin is made of columniform shaft and the thin disk-shaped flange that is positioned at the coaxial setting of shaft one end; Axially be provided with the groove that connects flange on described shaft, the two sides of this groove are parallel to each other, and the center line of described shaft and flange is positioned on the axial plane of symmetry of described groove; Have with this side perpendicularly on a side of described groove, and connect the screw of this lateral column body, in this screw trip bolt is housed, two planes up and down of the another side of described groove and described flange are perpendicular;
(2) detection method, A, elder generation use the vernier caliper measurement that described measurement pin is installed to be combined as the slip gauge group length of tested groove bottom diameter nominal size, write down reading D at this moment
1B, two flanges of measuring pin are inserted until contacting with bottom land from the both sides of tested annular groove, measurement pin on the left card base and tested annular groove bottom are offseted, swing simultaneously the measurement pin on the right card base gently, find two to measure the maximal value D that is produced when the axial line of pin and tested annular groove axial line are positioned at same plane
2, C, with reading D
2The standard value D that is drawn with previous measurement slip gauge group
1Compare, thereby judge measured value whether in margin tolerance.
Described shaft and flange are structure as a whole, and described screw axially is provided with two along shaft, are provided with anti-skidding line on the head periphery of described trip bolt.
Described slip gauge group is replaced by a slip gauge near tested groove bottom diameter nominal size, and with this slip gauge length of vernier caliper measurement that described measurement pin is installed, D takes reading earlier
0, measure the end footpath D of tested annular groove then with described method
2, the nominal size of this slip gauge and the nominal size of tested groove bottom diameter are subtracted each other the difference DELTA that draws
DCompensate to reading D
2, draw numerical value D
3, i.e. Δ
D+ D
2=D
3, at last with numerical value D
3With reading D
0Compare, thereby judge measured value whether in margin tolerance.
Because in this kind measuring method, measurement pin and slide calliper rule are fixedly connected and are one, measure very convenient, solved with slip gauge and measured the bad problem that holds, and transfer when mounted on same surface level two bottom surfaces of measuring the disk-shaped flange of pin, so flange can not tilt in annular groove when measuring, two side planes of flange are perpendicular with the axial line of tested annular groove all the time, make to measure accurately; In addition, because the present invention uses vernier caliper as the fundamental measurement instrument, thereby can measure the inside and outside annular groove of different-diameter.
The invention has the beneficial effects as follows: a kind of measuring method that detects diameter of ring groove is provided, not only can detects footpath at the bottom of the outer groove of different size accurately, easily, also can the inner groove of different-diameter be detected, satisfy the detection needs of various workpieces.
Description of drawings
Fig. 1 is the synoptic diagram when installing and measuring pin.
Fig. 2 is for measuring the structural representation of pin.
Fig. 3 is the A-A cut-open view (taking off screw) of Fig. 2.
Fig. 4 is the synoptic diagram when detecting outer groove.
Embodiment
The invention will be further described below in conjunction with drawings and Examples:
Embodiment 1: as shown in Figure 1, a kind of measuring method of diameter of ring groove, comprise installation method and detection method, carry out according to following steps: (one) installation method, A, on dull and stereotyped 5, place a contour parallels 6, the outer survey card base left side that insert structure is identical respectively of vernier caliper 4 is measured in the groove of pin 1 and right measurement pin 2, made two to measure footmuff on the outer survey card base of vernier caliper 4, the height of contour parallels 6 is outer 1.4 times of surveying card base length; B, the blade 4a lower surface of vernier caliper 4 is placed on the end face of contour parallels 6, and make two outer survey card bases vertically be positioned at the both sides of contour parallels 6 vacantly, adjusting two measurement pin makes the flange bottom surface of measuring the underfooting end fit with dull and stereotyped 5, keep this fit-state and tighten the trip bolt of measuring on the pin 3, make the outer survey card base rear surface of vernier caliper 4 and the groove trailing flank of measuring in the pin 1,2 fit fixing.
The height setting of contour parallels 6, should make the outer survey card base of vernier caliper 4 unsettled, guarantee again when the flange bottom surface of measuring the underfooting end fits with dull and stereotyped 5, the outer survey card base of measuring pin and vernier caliper 4 also has the containing part of sufficient length, is fastened on the outer needs of surveying on the card base reliably with the satisfied pin of will measuring.The disk-shaped flange bottom surface of two measurement pin fits with dull and stereotyped 5 and tightens trip bolt 3 simultaneously, measurement pin and slide calliper rule are fixedly connected to after the one, two bottom surfaces of measuring pin are positioned on the same surface level all the time, and this plane is perpendicular with the groove trailing flank of measuring pin, so flange can not tilt in annular groove when measuring, two side planes of flange are perpendicular with the axial line of tested annular groove all the time, make to measure accurately.
As shown in Figures 2 and 3, a left side is measured pin 1 and is made of columniform shaft 1a and the thin disk-shaped flange 1b that is positioned at the coaxial setting in shaft 1a lower end, shaft 1a and flange 1b are structure as a whole, its material is a carbon tool steel and through quenching and temper, make it have higher hardness and high-wearing feature, not easy to wear to keep the accuracy of measurement.Axially be provided with the groove 1c that connects flange 1b on shaft 1a, the two sides of this groove 1c are parallel to each other, and the center line of shaft 1a and flange 1b is positioned on the axial plane of symmetry of described groove 1c; On the side of groove 1c, have perpendicular with this side, and connect the screw 1d of this lateral column body 1a, screw 1d axially is provided with two along shaft 1a, the trip bolt 3 that is provided with anti-skidding line on the head periphery is housed in screw 1d, and two planes up and down of the another side of groove 1c and described flange 1b are perpendicular.The width of flange 1b is measured thereby make flange 1b can insert tested annular groove less than the width of tested annular groove; The bench height of flange 1b and shaft 1a is greater than the degree of depth of tested annular groove, and like this, the cylindrical of flange 1b could touch with the bottom connection of tested annular groove when measuring, and is unlikely to make the external cylindrical surface or the inner hole wall interference of shaft 1a and tested annular groove.Sliding the closing in forward and backward surface of the two sides of groove 1c and used slide calliper rule card base cooperates, thereby makes the front and rear surfaces of slide calliper rule card base be symmetrical in the rotational symmetry plane of measuring pin, and the osculatory of the outer round surface intersection of this rotational symmetry plane and flange 1b during for measurement.The degree of depth of groove 1c is 3/4 of a shaft 1a diameter, greater than the width of used slide calliper rule card base, the card base of slide calliper rule can be contained, and makes the fixed installation of slide calliper rule and measurement pin more reliable.
As shown in Figure 1, when the screw on the left side measurement pin 1 was opened on the leading flank of groove 1c, the opening of groove 1c was positioned at the left side of shaft 1a; When the screw on the right side measurement pin 2 was opened on the leading flank of this groove 2c, the opening of groove 2c was positioned at shaft 2a right side, screw is opened be convenient to control trip bolt 3 on leading flank.
(2) detection method, the slip gauge group length that is combined as tested groove bottom diameter nominal size by the polylith slip gauge is measured with the vernier caliper 4 that described measurement pin is installed by A, elder generation, writes down the reading D of this moment
1B, as shown in Figure 4, flange 1b, the 2b of left and right measurement pin, insert until contacting from the both sides of tested annular groove with bottom land, flange 1b and tested annular groove bottom that a left side is measured on the pin 1 offset, the right pin 2 of measuring of swing gently simultaneously finds two to measure the maximal value D that is produced when the axial line of pin and tested annular groove axial line are positioned at same plane
2, C, with reading D
2The standard value D that is drawn with previous measurement slip gauge group
1Compare, thereby judge measured value whether in margin tolerance.
Embodiment 2: in the measuring method of the described diameter of ring groove of present embodiment, the measurement pin that is adopted is identical with measurement leg structure among the embodiment 1, measuring method is substantially the same manner as Example 1, different is, when detecting, the slip gauge group that described polylith slip gauge combines is replaced by a slip gauge near tested groove bottom diameter nominal size, measures this slip gauge length with the vernier caliper 4 that described measurement pin is installed earlier, and D takes reading
0, measure the end footpath D of tested annular groove then with described method
2, the nominal size of this slip gauge and the nominal size of tested groove bottom diameter are subtracted each other the difference DELTA that draws
DCompensate to reading D
2, draw numerical value D
3, i.e. Δ
D+ D
2=D
3, at last with numerical value D
3With reading D
0Compare, thereby judge measured value whether in margin tolerance.
For example, as shown in Figure 4, when measuring footpath, end nominal size and be the piston outer groove of 70mm, choose two slip gauges respectively, the data recording of twice measurement and being calculated as follows near this nominal size 70mm:
| One after another | Diameter of ring groove nominal size D | The slip gauge nominal size | Slip gauge records dimension D 0 | Annular groove |
| 1 | 70mm | 65mm | 85mm | 89.9 |
| 2 | 70mm | 75mm | 95mm | 89.9mm |
In measuring for the first time, choose the slip gauge of 65mm, draw D
0Be 85mm, and D
3=Δ
D+ D
2, i.e. D
3=(65-70)+and 89.9=84.9mm, with numerical value D
3Be 84.9mm and reading D
0For 85mm compares, thereby judge measured value whether in margin tolerance.
In measuring for the second time, choose the slip gauge of 70mm, draw D
0Be 95mm, and D
3=Δ
D+ D
2, i.e. D
3=(75-70)+and 89.9=94.9mm, with numerical value D
3Be 94.9mm and reading D
0For 95mm compares, thereby judge measured value whether in margin tolerance.
Use method of the present invention also can measure the inner groove diameter of endoporus, flange two outsides insertion inner groove of measuring on the pin is got final product, installation method and detection method are as previously mentioned.
Claims (3)
1, a kind of measuring method of diameter of ring groove, comprise installation method and detection method, it is characterized in that, carry out according to following steps: (one) installation method, A, go up in dull and stereotyped (5) and to place a contour parallels (6), the outer survey card base of vernier caliper (4) is inserted respectively in the groove of left and right measurement pin (1,2), make two to measure footmuffs and survey outside described on the card base, the height of described contour parallels (6) is 1.2～1.6 times of outer survey card base length of described vernier caliper (4); B, blade (4a) lower surface of described vernier caliper (4) is placed on the end face of described contour parallels (6), and two outer survey card bases that make described vernier caliper (4) vertically are positioned at the both sides of described contour parallels (6) vacantly, adjusting described two measurement pin fits flange bottom surface and the described flat board (5) of measuring the underfooting end, keep this fit-state and tighten trip bolt (3) on the described left and right measurement pin (1,2), make the rear surface of outer survey card base of vernier caliper (4) and the groove trailing flank in the described left and right measurement pin (1,2) fit fixing;
Described left and right measurement pin (1,2) structure is identical, and a described left side is measured pin (1) and is made of columniform shaft (1a) and the thin disk-shaped flange (1b) that is positioned at the shaft coaxial setting in (1a) lower end; Axially be provided with the groove (1c) that connects flange (1b) on described shaft (1a), the two sides of this groove (1c) are parallel to each other, and the center line of described shaft (1a) and flange (1b) is positioned on the axial plane of symmetry of described groove (1c); On a side of described groove (1c), have perpendicular with this side, and connect the screw (1d) of this lateral column body (1a), trip bolt (3) is housed in this screw (1d), and two planes up and down of the another side of described groove (1c) and described flange (1b) are perpendicular;
(2) detection method, the slip gauge group length that is combined as tested groove bottom diameter nominal size is measured with the vernier caliper (4) that described measurement pin is installed by A, elder generation, writes down the reading D of this moment
1B, two flanges of measuring pin are inserted until contacting with bottom land from the both sides of tested annular groove, measurement pin on the left card base and tested annular groove bottom are offseted, swing simultaneously the measurement pin on the right card base gently, find two to measure the maximal value D that is produced when the axial line of pin and tested annular groove axial line are positioned at same plane
2, C, with reading D
2The standard value D that is drawn with previous measurement slip gauge group
1Compare, thereby judge measured value whether in margin tolerance.
2, the measuring method of a kind of diameter of ring groove according to claim 1, it is characterized in that: described shaft (1a) and flange (1b) are structure as a whole, described screw (1d) axially is provided with two along shaft (1a), is provided with anti-skidding line on the head periphery of described trip bolt (3).
3, the measuring method of a kind of diameter of ring groove according to claim 1, it is characterized in that: described slip gauge group is replaced by a slip gauge near tested groove bottom diameter nominal size, measure this slip gauge length with the vernier caliper (4) that described measurement pin is installed earlier, D takes reading
0, measure the end footpath D of tested annular groove then with described method
2, the nominal size of this slip gauge and the nominal size of tested groove bottom diameter are subtracted each other the difference DELTA that draws
DCompensate to reading D
2, draw numerical value D
3, i.e. Δ
D+ D
2=D
3, at last with numerical value D
3With reading D
0Compare, thereby judge measured value whether in margin tolerance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100695378A CN101551222B (en) | 2008-04-03 | 2008-04-03 | Method for measuring diameter of ring groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100695378A CN101551222B (en) | 2008-04-03 | 2008-04-03 | Method for measuring diameter of ring groove |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101551222A true CN101551222A (en) | 2009-10-07 |
| CN101551222B CN101551222B (en) | 2010-12-08 |
Family
ID=41155598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100695378A Expired - Fee Related CN101551222B (en) | 2008-04-03 | 2008-04-03 | Method for measuring diameter of ring groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101551222B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243049A (en) * | 2011-04-25 | 2011-11-16 | 平高集团有限公司 | Detection tool for groove medium diameter of disc insulator |
| CN103837059A (en) * | 2012-11-20 | 2014-06-04 | 上海华虹宏力半导体制造有限公司 | Correction tool and method for ion-source electric-arc slit |
| CN106643374A (en) * | 2015-10-28 | 2017-05-10 | 科华控股股份有限公司 | Special-purpose testing fixture for detecting position of workpiece bore semi-trapezoid ring groove |
| CN107869941A (en) * | 2016-09-28 | 2018-04-03 | 中际联合（天津）科技有限公司 | Circumference dovetail groove test measuring device |
| CN108151613A (en) * | 2017-12-05 | 2018-06-12 | 中国航发动力股份有限公司 | A kind of measuring tool and measuring method for measuring V-type outer shroud slot space diameter |
| CN112229290A (en) * | 2020-04-29 | 2021-01-15 | 大连创新零部件制造公司 | Vernier caliper for measuring aperture of taper hole and measuring method |
| CN112923832A (en) * | 2021-01-26 | 2021-06-08 | 西安热工研究院有限公司 | Method for measuring maximum blowing loss depth of heated surface pipe |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4553337A (en) * | 1984-01-06 | 1985-11-19 | Brewster Albert L | Thread gauge for measuring thread pitch diameters |
| US5048197A (en) * | 1989-02-17 | 1991-09-17 | Gunnar Anderson | Apparatus and method for measuring pitch diameter |
| CN2093376U (en) * | 1990-12-11 | 1992-01-15 | 齐齐哈尔国营和平机器制造厂 | Multipurpose thread surveying instrument |
| CN2319779Y (en) * | 1997-08-07 | 1999-05-19 | 涟源钢铁集团有限公司 | Combination vernier caliper |
-
2008
- 2008-04-03 CN CN2008100695378A patent/CN101551222B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243049A (en) * | 2011-04-25 | 2011-11-16 | 平高集团有限公司 | Detection tool for groove medium diameter of disc insulator |
| CN102243049B (en) * | 2011-04-25 | 2013-07-17 | 平高集团有限公司 | Detection tool for groove medium diameter of disc insulator |
| CN103837059A (en) * | 2012-11-20 | 2014-06-04 | 上海华虹宏力半导体制造有限公司 | Correction tool and method for ion-source electric-arc slit |
| CN106643374A (en) * | 2015-10-28 | 2017-05-10 | 科华控股股份有限公司 | Special-purpose testing fixture for detecting position of workpiece bore semi-trapezoid ring groove |
| CN107869941A (en) * | 2016-09-28 | 2018-04-03 | 中际联合（天津）科技有限公司 | Circumference dovetail groove test measuring device |
| CN108151613A (en) * | 2017-12-05 | 2018-06-12 | 中国航发动力股份有限公司 | A kind of measuring tool and measuring method for measuring V-type outer shroud slot space diameter |
| CN108151613B (en) * | 2017-12-05 | 2020-02-28 | 中国航发动力股份有限公司 | Measuring method of measuring tool for measuring space diameter of V-shaped outer ring groove |
| CN112229290A (en) * | 2020-04-29 | 2021-01-15 | 大连创新零部件制造公司 | Vernier caliper for measuring aperture of taper hole and measuring method |
| CN112923832A (en) * | 2021-01-26 | 2021-06-08 | 西安热工研究院有限公司 | Method for measuring maximum blowing loss depth of heated surface pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101551222B (en) | 2010-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101551222B (en) | Method for measuring diameter of ring groove | |
| CN101545749B (en) | Device for measuring diameter of circular groove | |
| CN104215156A (en) | Key groove reference block and single-hole single and double key groove symmetry degree detector | |
| CN103344167A (en) | Crankshaft semicircular key groove depth detection tool | |
| CN201335670Y (en) | Threaded hole depth calibrator | |
| CN201187981Y (en) | Measuring feet for detecting piston ring groove | |
| CN102564268B (en) | Hole-distance detecting device | |
| CN111076650B (en) | Tool for measuring symmetry of double-sided milling flat workpiece | |
| CN214747692U (en) | Caliper for detecting inner diameter of pipeline | |
| CN202119370U (en) | Microdrum thread depth plug gauge | |
| CN104215157A (en) | Key groove reference block and excircle single and double key groove symmetry degree detector | |
| CN108286922A (en) | A kind of measurement head for vernier caliper measurement deep trouth | |
| CN107388928A (en) | A kind of common normal measurement apparatus | |
| CN210198255U (en) | Device for measuring height difference of tool withdrawal groove of cylinder sleeve | |
| US2680301A (en) | Pipe thread gauge | |
| CN209588904U (en) | A kind of cubing for disk class | |
| CN208902021U (en) | Hole symmetry degree gauge | |
| US3646685A (en) | Gaging head for pneumatic bore gaging devices | |
| CN206146359U (en) | A examine utensil that is used for on final assembly line detecting engine crankshaft and camshaft centre -to -centre spacing | |
| CN201348490Y (en) | Gauge for detecting verticality of chain plate hole | |
| CN215177367U (en) | Improved go-no go gauge | |
| CN201335669Y (en) | Inner diameter measurement device | |
| CN205300414U (en) | Notch symmetry gauge | |
| CN109141200A (en) | Hole symmetry degree gauge | |
| CN207365841U (en) | A kind of bent axle Woodruff key slots and keyways detection cubing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101208 Termination date: 20190403 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |