CN100532867C - Gas cylinder with speed controlling function - Google Patents
Gas cylinder with speed controlling function Download PDFInfo
- Publication number
- CN100532867C CN100532867C CNB2007100966712A CN200710096671A CN100532867C CN 100532867 C CN100532867 C CN 100532867C CN B2007100966712 A CNB2007100966712 A CN B2007100966712A CN 200710096671 A CN200710096671 A CN 200710096671A CN 100532867 C CN100532867 C CN 100532867C
- Authority
- CN
- China
- Prior art keywords
- piston
- chair
- cylinder
- piston rod
- downside
- 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 - Fee Related
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Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/20—Chairs or stools with vertically-adjustable seats
- A47C3/30—Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
Abstract
A gas cylinder having a speed control function is provided. When the inside pitson of the cyclinder is separated into a first piston and a second piston to apply on the bottom of the bosun's chair, if the people sits on the bosun's chair, along with instant loading, the first piston adjusts the gas volume by means of gas to make the second piston slowly move to endow buffer function to the people on the bosun's chair. At the same time, at the state of sitting on the chair, after saparating the upper and lower cams originally connected with each other, the lifting and rotating action of the bosun's chair is performed , thus the effect of effectively preventing the cam from wearing can be obtained. In addition, when the people stands up, the bosun's chair lifts up under the action of air pressure, each inclined plane of the upper and lower cams is connected with each other to make the bosun's chair restore to the initial condition, and the height and the position of chair can be automatically kept regular and identical.
Description
Technical field
The present invention relates to the technology of cylinder, in detail, the invention relates to the technology of the cylinder that possesses speed controlling function, the present invention is being applied under the situations such as chair, when vertical load takes place when, can control initial velocity, play buffer function, make the cam configuration thing of seat return effect impaired when preventing to play the contact seat rotation because of the plane of inclination simultaneously.
Background technique
Usually, swivel chair is made of the back-rest of back that supports the user and waist, the seat portion that supports user's buttocks, the chair shank that supports the running shaft of seat portion and be connected in the running shaft lower end, setting can produce the cylinder of elastic force in the running shaft, makes seat portion self-return.
About swivel chair cylinder in the past, once in Korean Patent Room patent gazette 2001-0006876 " return type swivel chair is with highly regulating assembly body ", announced.
As shown in Figure 1, comprise with cylinder according to embodiment's swivel chair in the past: axle 10, it is inserted in the urceolus 50, and its axial side is fixed on an end of urceolus as piston rod 24, and axial opposite side extends to the outside of urceolus as collar tube sub-assembly 20; The 1st cam part 30 and the 2nd cam part 40, they are equipped between urceolus and the collar tube sub-assembly, and axle can be driven to sense of rotation and axle direction, can make the rotation of axial rotary original position simultaneously.Wherein, on the periphery of collar tube sub-assembly 20, form more than one at least groove towards axle direction, the 1st cam part 30 is fixed on the inner peripheral surface of urceolus, can drive to sense of rotation and axle direction so that be provided with the collar tube sub-assembly of groove, 40 of the 2nd cam parts are provided with projection in interior all sides, and projection is embedded in the groove of collar tube sub-assembly, make the 2nd cam part with respect to only lifting axially of collar tube sub-assembly, and be set in the urceolus because of it, the sense of rotation that makes the 2nd cam part follow collar tube sub-assembly is rotated simultaneously, in addition, the surface of contact of the 1st cam part and the 2nd cam part forms the plane of inclination of mutual isologue, and the following spring 60 that is provided with of the 2nd cam part is pushed the 2nd cam part 40 to the 1st cam part 30 sides.
But as mentioned above, only when manipulation is located at the valve pin on top, the seat of swivel chair just can carry out vertical motion to swivel chair in the past with cylinder.Therefore, when putting many swivel chairs, do not leave just carry out the valve pin operation as the fruit part user in places such as meeting room, playrooms, will form the uneven in disorder environment of height of each swivel chair, want marshalling, need adjust the height of swivel chair one by one, bring inconvenience.
In addition, existing another problem points of the cylinder that carries on the above-mentioned swivel chair is, when the people is sitting in the seat portion of chair, moment produces vertical load, if do not have chair cushion on the chair this moment, need directly bear the vertical load that is taken place by human body, bring certain misery to human body.
In addition, when the people was sitting on the chair, the cam configuration thing of top and the bottom remained the adherence state, so if long-time the use, cam contact position, top and the bottom can wear and tear, and seat can't be got back to original position.
Summary of the invention
The present invention designs for addressing the above problem just, and its purpose is, for avoid being subjected to the loading of moment generation when the people is sitting on the chair, by the control initial velocity, give pooling feature, make cylinder absorb loading, and prevent to follow the contact between the structure of moment loading.
In addition, the cam configuration thing that prevents to be equipped on the seat uses the back to wear and tear because of contact for a long time.
In addition, when the people on being sitting in seat stands, seat can be risen automatically under the state that does not have the special tectonic thing, set back.
Be intended to realize the present invention of above-mentioned purpose, be characterized in by constituting as the bottom: outer cylinder body, it presents cylindrical shape; The inside and outside cylinder, it carries out lifting action to be inserted in the state of outer cylinder body under the guiding of the sleeve member that is connected to upside; Valve, it is arranged on the upside of this inside and outside cylinder, is used for the control gaseous stream; Piston rod, it is to be inserted into the state of inner cylinders, its lower end links to each other with the lower end of outer cylinder body, the upper end portion be provided with successively the minor diameter part that extends according to above-below direction and extend to form from the downside of minor diameter part footpath portion, and the large-diameter portion that extends to form of footpath subordinate's side therefrom; Packing ring, its external diameter form gas therebetween and move required slit less than the internal diameter of inner cylinders, are connected in the upside of piston rod and minor diameter part; The 1st piston, it is connected in the minor diameter part of piston rod in mode liftably, and is close to the downside that is fixed in packing ring, and side is provided with the export-oriented gas guide groove of guiding and the gas of inner peripheral surface is guided to the 1st mouth of pipe of downside above it, and its outer circumferential face is provided with O type ring recess; Control panel, its external diameter are less than the internal diameter of inner cylinders, and it is connected in minor diameter part and supports the 1st lower part of piston, above a side be provided with the gas guide groove of the extroversion that runs through the 1st mouth of pipe; The 2nd piston, it links to each other with large-diameter portion with the middle footpath portion of piston rod, and side is provided with export-oriented gas guide groove above it, and the inner circumferential surface upside is provided with O type ring recess, extends to form the 2nd mouth of pipe downwards from the downside of O type ring recess, forms O type ring recess at outer circumferential face; Piston supports, and it relies on the hook part on the large-diameter portion that is arranged at piston rod to block, and supports the 2nd lower part of piston; A plurality of piston O type circles, they are inserted in respectively in the O type ring recess.
The return member that is used to reset when in addition, installing rotation additional on the cylinder of inside and outside is advisable.
Above-mentioned return member is by constituting as the bottom: promptly, top jaw, it supports lower position at piston, is fixedly connected on the large-diameter portion of piston rod, and the lower end forms the plane of inclination; Lower cam, its upper end are formed with and corresponding plane of inclination, the plane of inclination of top jaw, to be accommodated in the state of inner cylinders, are fixed on the outer inside casing.
In addition, between the middle footpath portion and large-diameter portion of piston rod, the rake that inclination is set is advisable.
Description of drawings
Fig. 1 is the sectional view of swivel chair usefulness cylinder in the past;
Fig. 2 is the sectional view of the cylinder that possesses speed controlling function of desirable embodiment according to the present invention;
Fig. 3 is the movement state diagram of Fig. 2;
Fig. 4 is the original state sectional view of " C " part among magnifying show Fig. 2 or Fig. 3;
Fig. 5 is the sectional view that shows the 2nd piston moving process in Fig. 4 during inside and outside cylinder generation vertical load;
Fig. 6 be in Fig. 5 inwardly outer inside casing apply the sectional view that shows the 2nd piston position after the loading;
Fig. 7 is the sectional view of " D " part among magnifying show Fig. 2 or Fig. 3.
Embodiment
Below in conjunction with accompanying drawing, desirable embodiment of the present invention is described, but in declarative procedure, if think the influence purport of the present invention that relevant known function or the specific description that invention is constituted will be unnecessary, then omit its detailed description.
To shown in Figure 6, the present invention is by constituting as the bottom as Fig. 2: outer cylinder body 100, and it presents cylindrical shape; Inside and outside cylinder 200,300, it by the guiding of sleeve member 110, carries out lifting action to be inserted into the state of outer cylinder body 100; Valve 400, it is set at the upside of inside and outside cylinder 200,300, is used for the control gaseous stream; Piston rod 500, it is to be inserted into the state of inner cylinders 200, and its lower end is connected in the lower end of outer cylinder body 100; Packing ring 600, it is set at the upside of piston rod 500, the moving of guiding gas; The 1st piston 700, it is set at the downside of packing ring 600, by the lifting action guiding gas; Control panel 800, it is set at the downside of the 1st piston 700, gas is moved guide the outside into; The 2nd piston 900, it is positioned at the downside of control panel 800, and optionally guiding gas moves; Piston supports 580, and it is used to limit the following to moving of the 2nd piston 900; Return member S, it is set at piston and supports 580 downside, when 200,300 rotations of inside and outside cylinder, makes it to return to original state.
Wherein, outer cylinder body 100 adopts cylindrical design as known technology, and upper inside is connected and fixed the sleeve member 110 of hollow shape.
Wherein, outer inside casing 300 carries out lifting action in outer cylinder body 100 inside under the guiding of sleeve member 110.In addition, the inside of outer inside casing 300 is provided with inner cylinders 200, the middle gas flow path that forms.
In addition, the upside of outer inside casing 300 is provided with known valve 400, and the lower end outer circumferential face of valve 400 links to each other with the upper end portion of inner cylinders 200, the moving of guiding gas.
As known technology, the central authorities of valve 400 are provided with valve pin, are used for optionally opening and closing the inboard that is formed on inner cylinders 200 and the gas flow path between the inside and outside cylinder 200,300.
Wherein, piston rod 500 is to be inserted into the state of inner cylinders 200, its lower end links to each other with the lower end of outer cylinder body 100, the upper end portion be provided with successively the minor diameter part 510 that extends according to above-below direction and extend to form from the downside of minor diameter part 510 footpath portion 520, and the large-diameter portion 540 that extends to form of footpath portion 520 downsides therefrom.In addition, be provided with the rake 530 of inclination between the middle footpath portion 520 of piston rod 500 and the large-diameter portion 540.
Wherein, packing ring 600 external diameters form gas therebetween and move required slit less than the internal diameter of inner cylinders 200, are connected in the upside of piston rod 500 and minor diameter part 510.
Wherein, the 1st piston 700 is connected in the minor diameter part 510 of piston rod 500 in mode liftably, and be close to the downside that is fixed in packing ring 600, side is provided with the first export-oriented gas guide groove 710 of guiding and the gas of inner peripheral surface is guided to the 1st mouth of pipe 720 of downside above it, and its outer circumferential face is provided with the one 0 type ring recess 730.
Wherein, the external diameter of control panel 800 is less than the internal diameter of inner cylinders 200, and it is connected in the bottom that minor diameter part 510 supports the 1st piston 700, above a side be provided with the second gas guide groove 810 of the extroversion that runs through the 1st mouth of pipe 720.
Wherein, link to each other with large-diameter portion 540 with the middle footpath portion 520 of piston rod 500, side is provided with the 3rd export-oriented gas guide groove 910 above it, the inner circumferential surface upside is provided with the 2nd O type ring recess 920, extend to form the 2nd mouth of pipe 930 downwards from the downside of the 2nd O type ring recess 920, form the 30 type ring recess 940 at outer circumferential face.
Wherein, piston supports 580 and relies on the hook part 570 on the large-diameter portion 540 that is arranged at piston rod 500 to block, and supports the bottom of the 2nd piston 900.
Wherein, hook part 570 is by the groove that is formed on large-diameter portion 540 outer circumferential faces, and is inserted into this groove internal fixation, and support piston supports 580 ring and constitutes suitable.
In addition, the return member S that on the cylinder of inside and outside, is provided for resetting, this return member S is by constituting as the bottom: top jaw 160, it supports 580 lower position at piston, is fixedly connected on the large-diameter portion 540 of piston rod 500, and the lower end forms plane of inclination 162; Lower cam 170, its upper end are formed with the 162 corresponding plane of inclination 172, plane of inclination with top jaw 160, to be accommodated in the state of inner cylinders 200, are fixed on the outer inside casing 300.
When 200,300 rotations of inside and outside cylinder, with respect to the top jaw 160 that is fixed on the piston rod 500, after being fixed on the contact rotation of lower cam 170 by each plane of inclination 162,172 on the outer inside casing 300, the engaging force by each plane of inclination 162,172 resets once more.
Symbol 120 expressions when contacting the lower end of outer inside casing 300, can provide cushion effect as the buffering and the thrust bearing of known formation among the figure.
Below in conjunction with accompanying drawing, at having as above the present invention of structure, the operating state that promptly possesses the cylinder of speed controlling function is elaborated.
As Fig. 1 or shown in Figure 2, in the time of on the seat that cylinder of the present invention is installed in chair, if the people is sitting on the chair, loading will take place moment in inside and outside cylinder 200,300, at this moment, gas pressure will act on the inboard of inner cylinders 200, and gas is under the effect of gas pressure, by the outside of packing ring 600, push away control panel 800 via the top first gas guide groove 710 and the 1st mouth of pipe 720 of the 1st piston 700.Under the effect that continuous gas moves, control panel 800 be subjected to gas pressure and in being moved down into the upper end of footpath portion 520 block, at this moment, gas is by moving laterally with the first gas guide groove 810 above the control panel 800, and then mobile by the 3rd gas guide groove 910 continuation that are formed at above the 2nd piston 900, the 2nd piston 900 is pushed away downwards.At this moment, as shown in Figure 5, the 2nd piston 900 moves down, and 0 type circle props up large-diameter portion 540 and cuts off moving of gases, and moves with fast slightly speed, and then props up piston and support 580 in (shown in the arrow interval of Fig. 3, or as shown in Figure 6), is maintained fixed state.At this moment, the state that top jaw 160 and lower cam 170 maintenances are separated from each other, seat is sitting in the people on the seat, can rotate freely or realize lifting action.
When the people who was seated originally stands, compressed gas pushes away the 2nd piston 900, therefore along with the rising of the 2nd piston 900, inboard O type circle breaks away from large-diameter portion 540, and by rake 530 slide in footpath portion 520, make gas pass through the 2nd mouth of pipe 540 and connect that the plane of inclination 162,172 of top jaw 160 and lower cam 170 is in contact with one another simultaneously, makes seat reset to original state.
Promptly, when the people sits on the seat of chair, top and the bottom cam 160,170 separates, be sitting in people on the chair and can arbitrarily carry out height and regulate and spinning movement, and keep being sitting in state on the chair, but the people is when seat stands, seat carries out vertical motion, at this moment, top and the bottom cam 160,170 contacts with each other, and makes seat reset to original state.
In sum, the cylinder that possesses speed controlling function of the present invention, when internal piston being separated into the 1st and the 2nd piston applications in the seat bottom, if the people sits on the seat, generation along with the moment loading, the 1st piston is adjusted gas flow by gas flow path, the 2nd piston is slowly moved, give pooling feature to the people who is sitting on the chair, simultaneously, under the state that sits on the seat, after the top and the bottom cam that originally is in contact with one another separates, carry out the lifting and the spinning movement of seat again, so have the effect that can effectively prevent cam wear.
In addition, when the people stood, seat rose under the effect of air pressure, and each plane of inclination of top and the bottom cam is in contact with one another, and seat is restPosed, and naturally and understandably made the height of chair and position keep neat and consistent.
Claims (4)
1. cylinder that possesses speed controlling function, it has as the bottom:
Inside and outside cylinder (200,300), it carries out lifting action to be inserted in the state of columnar outer cylinder body (100) under the guiding that is connected to the sleeve member of upside (110);
Valve (400), it is arranged on the upside of this inside and outside cylinder (200,300), is used for the control gaseous stream;
Piston rod (500), it is to be inserted into the state of inner cylinders (200), its lower end links to each other with the lower end of outer cylinder body (100), the upper end portion be provided with successively the minor diameter part (510) that extends according to above-below direction and extend to form from the downside of minor diameter part (510) footpath portion (520), and the large-diameter portion (540) that extends to form of footpath portion (520) downside therefrom;
Packing ring (600), its external diameter form gas therebetween and move required slit less than the internal diameter of inner cylinders (200), are connected in the upside of piston rod (500) and minor diameter part (510);
Piston supports (580), and it relies on the hook part (570) on the large-diameter portion (540) that is arranged at piston rod (500) to block, and supports the bottom of the 2nd piston (900);
A plurality of piston O type circles, they are inserted in respectively in the O type ring recess, it is characterized in that also having:
The 1st piston (700), it is connected in the minor diameter part (510) of piston rod (500) in mode liftably, and be close to the downside that is fixed in packing ring (600), side is provided with the first export-oriented gas guide groove (710) of guiding and the gas of inner peripheral surface is guided to the 1st mouth of pipe (720) of downside above it, and its outer circumferential face is provided with an O type ring recess (730);
Control panel (800), its external diameter be less than the internal diameter of inner cylinders (200), and it is connected in the bottom that minor diameter part (510) supports the 1st piston (700), above a side be provided with the second gas guide groove (810) of the extroversion that runs through the 1st mouth of pipe (720);
The 2nd piston (900), it links to each other with large-diameter portion (540) with the middle footpath portion (520) of piston rod (500), side is provided with the 3rd export-oriented gas guide groove (910) above it, the inner circumferential surface upside is provided with the 2nd O type ring recess (920), extend to form the 2nd mouth of pipe (930) downwards from the downside of the 2nd O type ring recess (920), form the 3rd O type ring recess (940) at outer circumferential face.
2. the cylinder that possesses speed controlling function according to claim 1 is characterized in that,
The return member that is used to reset when on inside and outside cylinder (200,300), installing rotation additional.
3. the cylinder that possesses speed controlling function according to claim 2 is characterized in that,
The return member is by constituting as the bottom: top jaw (160), and it supports (580) lower position at piston, is fixedly connected on the large-diameter portion (540) of piston rod (500), and the lower end forms plane of inclination (162); Lower cam (170), its upper end are formed with the corresponding plane of inclination, plane of inclination (162) (172) with top jaw (160), to be accommodated in the state of inner cylinders (200), are fixed on the outer inside casing (300).
4. the cylinder that possesses speed controlling function according to claim 3 is characterized in that,
Be provided with the rake (530) of inclination between the middle footpath portion (520) of piston rod (500) and the large-diameter portion (540).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020060042081 | 2006-05-10 | ||
| KR1020060042081A KR100717243B1 (en) | 2006-05-10 | 2006-05-10 | Gas cylinder of rotatable chair having auto return/lift |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101070863A CN101070863A (en) | 2007-11-14 |
| CN100532867C true CN100532867C (en) | 2009-08-26 |
Family
ID=38270442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100966712A Expired - Fee Related CN100532867C (en) | 2006-05-10 | 2007-04-19 | Gas cylinder with speed controlling function |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4571657B2 (en) |
| KR (1) | KR100717243B1 (en) |
| CN (1) | CN100532867C (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886682B (en) * | 2009-05-12 | 2012-07-25 | 株式会社韩国伽斯普邻 | A gas-spring with a speed controller |
| KR101702497B1 (en) * | 2010-06-04 | 2017-02-07 | 주식회사 삼홍사 | Gas cylinder |
| KR101233097B1 (en) | 2011-03-08 | 2013-02-14 | 주식회사 한국가스스프링 | A gas cylinder with a cushion |
| CN102614020B (en) * | 2012-03-02 | 2013-12-18 | 桐庐福克医疗仪器有限公司 | Electric diagnostic treatment chair |
| CN103371658B (en) * | 2012-04-30 | 2016-02-03 | 丽水市汇金电气有限公司 | Gas support locking device |
| CN102943782A (en) * | 2012-10-13 | 2013-02-27 | 无锡市协清机械制造有限公司 | Piston assembly of nitrogen gas balanced oil cylinder |
| KR101479515B1 (en) * | 2013-06-25 | 2015-01-07 | 주식회사 한국가스스프링 | A gas cylinder for shut off the grease |
| CN105249706A (en) * | 2015-10-26 | 2016-01-20 | 青岛三弘精密器械有限公司 | High-pressure air cylinder |
| KR101925450B1 (en) | 2016-12-07 | 2018-12-06 | 주식회사 한국가스스프링 | A gas cylinder with a speed controller |
| KR101925451B1 (en) | 2016-12-19 | 2018-12-06 | 주식회사 한국가스스프링 | A gas cylinder |
| CN107411399B (en) * | 2017-07-18 | 2023-10-27 | 中山乐宜嘉家居设备有限公司 | Auxiliary chair |
| KR102087860B1 (en) * | 2018-07-23 | 2020-03-12 | 주식회사 한국가스스프링 | A can structure of gas cylinder |
| CN113768308A (en) * | 2021-09-24 | 2021-12-10 | 戴云云 | High lifting structure of office chair |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0434532U (en) * | 1990-07-20 | 1992-03-23 | ||
| DE19528645C1 (en) * | 1995-08-04 | 1997-02-13 | Stabilus Gmbh | Slide column |
| KR19980063716U (en) * | 1997-04-19 | 1998-11-25 | 황영재 | Straight-line stepless stop for cushioning of angled chair with backrest |
| KR20020081844A (en) * | 2001-04-20 | 2002-10-30 | 주식회사 삼홍사 | Column unit |
| DE102004023335A1 (en) * | 2004-01-24 | 2005-08-11 | Suspa Holding Gmbh | Height-adjustable chair pillar |
| KR100687222B1 (en) * | 2004-10-19 | 2007-02-27 | 주식회사 삼홍사 | A gas cylinder |
| KR200382548Y1 (en) * | 2004-11-05 | 2005-04-22 | 주식회사 삼홍사 | A gas cylinder comprising the function of automatically returning to the original position |
-
2006
- 2006-05-10 KR KR1020060042081A patent/KR100717243B1/en active IP Right Grant
-
2007
- 2007-04-19 CN CNB2007100966712A patent/CN100532867C/en not_active Expired - Fee Related
- 2007-05-08 JP JP2007122950A patent/JP4571657B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR100717243B1 (en) | 2007-05-15 |
| JP2007303676A (en) | 2007-11-22 |
| JP4571657B2 (en) | 2010-10-27 |
| CN101070863A (en) | 2007-11-14 |
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| 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 | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20210419 |