CN101520116A - Corrugated pipe joint - Google Patents

Corrugated pipe joint Download PDF

Info

Publication number
CN101520116A
CN101520116A CN200910095986A CN200910095986A CN101520116A CN 101520116 A CN101520116 A CN 101520116A CN 200910095986 A CN200910095986 A CN 200910095986A CN 200910095986 A CN200910095986 A CN 200910095986A CN 101520116 A CN101520116 A CN 101520116A
Authority
CN
China
Prior art keywords
joint body
afterbody
cutting ferrule
corrugated pipe
bellows
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
Application number
CN200910095986A
Other languages
Chinese (zh)
Other versions
CN101520116B (en
Inventor
张康盛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHEJIANG SANZEE PIPES Co Ltd
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN2009100959864A priority Critical patent/CN101520116B/en
Publication of CN101520116A publication Critical patent/CN101520116A/en
Application granted granted Critical
Publication of CN101520116B publication Critical patent/CN101520116B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Joints Allowing Movement (AREA)

Abstract

The invention relate to a corrugated pipe joint comprising a joint body (1). The joint body (1) is provided with a longitudinal insertion hole (13) in which a corrugated pipe (3) can be inserted from rear to front; the joint body (1) is longitudinally provided with a head part (12) and a tail part (11); a clamping sleeve (2) is sleeved on the outer wall of the corrugated pipe (3); and the front end of the clamping sleeve (2) is inserted in a longitudinal insertion hole (13) of the tail part (11) of the joint body (1). The corrugated pipe joint is characterized in that the side wall of the clamping sleeve (2) is provided with a head-tail running-through longitudinal open gap (21) so that the cross section of the clamping sleeve (2) is in a C shape; the inner wall of the clamping sleeve (2) is provided with corrugations matched with corrugations on the outer wall of the corrugated pipe (3); the tail part of the clamping sleeve (2) is provided with an external flange (22); a push piece (4) capable of pushing the clamping sleeve (2) forward is screwed to the tail part (11) of the joint body (1); and the inner wall of the tail part of the push piece (4) is provided with an internal flange (41) supported against the external flange (22) arranged at the tail part of the clamping sleeve (2). Compared with the prior art, the invention can be installed rapidly, conveniently, safely and reliably in the abutting process and can be maintained with low cost.

Description

Corrugated pipe connector
Technical field
The present invention relates to a kind of pipe joint, particularly relate to a kind of corrugated pipe connector.
Background technique
The mode of conveying liquid such as gas appliances such as traditional connection LP gas cylinder, gas cylinder, gas cooker, water supply pipe, sewer pipeline and fire fighting equipment is: tighten with Drop-proof with galvanized wire by the rubber pipe binding and at the two ends of rubber pipe; There are many defectives in this Placement: install and transposing inconvenience, under bending state, block gas circuit or water route easily, the rubber pipe corrosion-resistant, easily aging, working life is short, gas leakage or water leakage phenomenon take place easily, just because of this, annually in all parts of the country can take place all that medium that above-mentioned reason causes are poisoned or explosive incident such as gas leakage.
For solving the safe and reliable connectivity problem of rubber pipe, " a kind of modified model metallic hose " that No. 01211062.0, " helical fissure metal hose connector " that No. 97225278.9, " plug-in type helical fissure metal hose connector ", the ZL that No. 97225276.2, our formerly Chinese utility model patent ZL and ZL discloses three kinds of main bodys has the soft connecting tube of helical fissure metal tube for processing weighing-appliance, and its two ends are welded with the thread connecting joint of metal; These three kinds relate to scheme and have adopted the corrugated metal tube body, have certain flexible can be arbitrarily crooked and can not bend, and it is convenient and reliable to be threaded, phenomenon such as can thoroughly stop gas leakage, choke, leak, reveal the accident potential that causes poisoning, explosive incident thereby show because of combustion gas, practical effect is fine.
But because in above-mentioned three kinds of technological schemes, the termination of corrugated flexible metal tube main body all must be welded with a metal joint, this just limits its length dimension, in case determine just can't change when dispatching from the factory, more can't carry out free cutting according to Len req at the scene.And existing various pipe joint all relates at metal tube, plastic tube or coincidence tube, and not seeing has specially at the corrugated flexible metal tube design.For this reason, our formerly Chinese utility model patent ZL200520013536.3 " a kind of rapid pipe joint that is used for corrugated flexible metal tube " discloses a kind of rapid pipe joint that can be used to free-hand connection corrugated flexible metal tube, this rapid pipe joint includes a joint body, it has one can hold the jack that corrugated flexible metal tube inserts from back to front, connect a sleeve at this jack internal thread, barrel forward end is connected with the clamping sleeve that a front end has closing in portion, and the jack of described joint body has interior omoplate to position that should the clamping sleeve front end, and omoplate is provided with a ring packing plain cushion in this.This technological scheme has solved the difficult problem of the elongated degree corrugated flexible metal tube of on-the-spot installation main body effectively, and rapid pipe joint is quite reliable with being connected of corrugated flexible metal tube main body, even exert oneself the drawing corrugated flexible metal tube, also be difficult to pull, and sealing effect is better; But, find that through practice the pipe joint of said structure needs sleeve and clamping sleeve, structure is comparatively complicated, and the installing engineering cost is bigger, and it is not very convenient installing.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of corrugated pipe connector simple in structure, easy for installation at above-mentioned prior art.
The present invention solves the problems of the technologies described above the technological scheme that is adopted: this corrugated pipe connector includes
One joint body, this joint body has one can hold vertical jack that bellows inserts from back to front, and described joint body longitudinally is divided into head and afterbody, and wherein head is the outer joint that is used to connect outside miscellaneous part, and afterbody is the bellows joint that is used to connect bellows;
One cutting ferrule is set on the bellows outer wall, and the front portion of cutting ferrule is contained in vertical jack of afterbody of described joint body;
It is characterized in that:
Have the longitudinal opening slit of running through end to end on the sidewall of described cutting ferrule, thereby make the cross section of described cutting ferrule be the C type, the inwall of described cutting ferrule is provided with the ripple that matches with bellows outer wall ripple, and the afterbody of described cutting ferrule is provided with outward flange;
The afterbody of described joint body also is bolted with the projectile that described cutting ferrule can be pushed ahead, and this projectile afterbody inwall is provided with the inward flange that the outward flange with described cutting ferrule afterbody offsets.
Like this, when bellows is connected, owing to have the longitudinal opening slit of running through end to end on the sleeve perisporium, just can easily be enclosed within sleeve on the bellows, and then the bellows that will be with sleeve inserts in vertical jack of joint body, tighten projectile, whole docking operation is quick and easy for installation, safe and reliable.
Above-mentioned projectile can be a nut, and this nut has internal thread, has outside thread on the outer wall of described joint body afterbody, and this nut is screwed onto on the outer wall of described joint body afterbody.
Certainly, above-mentioned projectile can also have externally threaded sleeve pipe for one, and described joint body afterbody inwall has internal thread, and this casing pipe sleeve is located at outside the cutting ferrule afterbody, is threaded on the inwall of described joint body afterbody.
After bellows connects upper connection, in order to guarantee the sealing of fluid, the inwall of described joint body has step at afterbody and head interfaces position, and the internal diameter of afterbody is greater than the internal diameter of head, and the described step of described joint body inwall place is provided with a seal ring simultaneously.
What be highly profitable is, between the anterior outer wall of described cutting ferrule and the inwall of the afterbody of corresponding joint body for being threaded.
In order to dock with miscellaneous part, the head outer wall of described joint body is provided with outside thread.
Connect for convenience, the middle part of described joint body is the hexagon nut shape for the spanner clamping.
Compared with prior art, the invention has the advantages that: by offering the longitudinal opening slit of running through end to end on the sleeve perisporium, can hug the ripple of outside diameter of bel sleeve lining setting, at the afterbody of the joint body projectile that cutting ferrule can be advanced forward that is spirally connected, like this, when bellows is connected, just on the bellows that sleeve easily can be enclosed within, and then the bellows that will be with sleeve inserts in vertical jack of joint body, tighten projectile, whole docking operation is quick and easy for installation, safe and reliable, and maintenance cost is low.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention one;
Fig. 2 is the sectional drawing of the embodiment of the invention one;
Fig. 3 is the structural representation of the embodiment of the invention two;
Fig. 4 is the structural representation of the embodiment of the invention three;
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Embodiment one:
As illustrated in fig. 1 and 2, be one embodiment of the present of invention, include joint body 1, cutting ferrule 2, wherein joint body 1 has one and can hold vertical jack 12 that bellows 3 inserts from back to front, and joint body 1 longitudinally is divided into head 12 and afterbody 11, wherein head 12 is for being used to connect the outer joint of outside miscellaneous part, and afterbody 11 is for being used to connect the bellows joint of bellows; The inwall of joint body 1 has step 14 at afterbody 11 and head 12 interfaces positions, and the internal diameter of afterbody 11 is greater than the internal diameter of head 12, and step 14 places of joint body 1 inwall are provided with a seal ring 5 simultaneously.Cutting ferrule 2 is set on bellows 3 outer walls, have the longitudinal opening slit of running through end to end 21 on the sidewall of cutting ferrule 2, thereby the cross section that makes cutting ferrule 2 is the C type, the inwall of cutting ferrule 2 is provided with the ripple that matches with bellows 3 outer wall ripples, and the front portion of cutting ferrule 2 is contained in the bellows joint 11 of joint body 1, and the afterbody of cutting ferrule 2 is exposed at outward outside the bellows joint 11 of joint body 1, and the afterbody of cutting ferrule 2 is provided with outward flange 22.Also be bolted with the nut 4 that cutting ferrule 2 can be pushed ahead on afterbody 11 outer walls of joint body 1, these nut 4 afterbody inwalls are provided with the inward flange 41 that the outward flange 22 with cutting ferrule 2 afterbodys offsets.
Outer joint 12 outer walls of joint body 1 are provided with outside thread, and the middle part of joint body 1 is the hexagon nut shape for the spanner clamping.
During use, cutting ferrule 2 is set on the bellows 3, the bellows 3 that will be with cutting ferrule 2 then inserts in the afterbody 11 of joint body 1 from back to front, offset until the interior seal ring of bellows 3 with joint body, tightening nuts 4 then, sleeve 2 is pushed ahead and obtained the sealing effect of integral body, whole docking operation is quick and easy for installation, safe and reliable.
For the bellows 3 that is with protecting cover 31 outward, when connecting, its front end must be removed part protecting cover 31, the length of exposed portions serve is good just in time to insert in the joint body 1 until seal ring, like this, after connection, cutting ferrule 2 afterbodys can be pressed on the periphery of protecting cover 31 simultaneously, play seal action better.
Embodiment two:
Different with embodiment one is, the front portion of cutting ferrule 2 is by in the bellows joint 11 that is threaded in joint body 1, like this, in use, cutting ferrule 2 is set on the bellows 3, the bellows 3 that will be with cutting ferrule 2 then inserts in vertical jack of joint body 1 from back to front, because cutting ferrule 2 front threads are connected in the bellows joint 11 of joint body 1, at this moment joint body is quite reliable with being connected of bellows, even exert oneself the drawing bellows, also be difficult to pull, and sealing effect is better.And then tightening nuts 4, further advance cutting ferrule 2, offset until the interior seal ring of bellows 3 with joint body, at this moment, the sealing effect of whole corrugated pipe connector is better.
Embodiment three:
Different with embodiment one is, be bolted with the sleeve pipe 4 that cutting ferrule 2 can be pushed ahead on afterbody 11 inwalls of joint body 1, this sleeve pipe 4 has outside thread, and joint body 1 afterbody 11 inwalls have internal thread, sleeve pipe 4 is set in outside cutting ferrule 2 afterbodys, is threaded on the inwall of joint body 1 afterbody 11, and sleeve pipe afterbody inwall is provided with the inward flange 41 that the outward flange 22 with cutting ferrule 2 afterbodys offsets.

Claims (7)

1, a kind of corrugated pipe connector includes
One joint body (1), this joint body (1) has one can hold vertical jack (13) that bellows (3) inserts from back to front, and described joint body (1) longitudinally is divided into head (12) and afterbody (11), wherein head (12) is for being used to connect the outer joint of outside miscellaneous part, and afterbody (11) is for being used to connect the bellows joint of bellows;
One cutting ferrule (2) is set on bellows (3) outer wall, and the front portion of cutting ferrule (2) is contained in vertical jack (13) of afterbody (11) of described joint body (1);
It is characterized in that:
Have the longitudinal opening slit of running through end to end (21) on the sidewall of described cutting ferrule (2), thereby make the cross section of described cutting ferrule (2) be the C type, the inwall of described cutting ferrule (2) is provided with the ripple that matches with bellows (3) outer wall ripple, and the afterbody of described cutting ferrule (2) is provided with outward flange (22);
The afterbody (11) of described joint body (1) also is bolted with the projectile (4) that described cutting ferrule (2) can be pushed ahead, and this projectile afterbody inwall is provided with the inward flange (41) that the outward flange (22) with described cutting ferrule (2) afterbody offsets.
2, corrugated pipe connector according to claim 1, it is characterized in that: described projectile (4) is a nut, this nut has internal thread, has outside thread on the outer wall of described joint body (1) afterbody (11), and this nut is screwed onto on the outer wall of described joint body (1) afterbody (11).
3, corrugated pipe connector according to claim 1, it is characterized in that: described projectile (4) is one to have externally threaded sleeve pipe, described joint body (1) afterbody (11) inwall has internal thread, and this casing pipe sleeve is located at outside cutting ferrule (2) afterbody, is threaded on the inwall of described joint body (1) afterbody (11).
4, corrugated pipe connector according to claim 1, it is characterized in that: the inwall of described joint body (1) has step (14) at afterbody (11) and head (12) interfaces position, and the internal diameter of afterbody (11) is greater than the internal diameter of head (12), and the described step of described joint body (1) inwall (14) locates to be provided with a seal ring (5) simultaneously.
5, corrugated pipe connector according to claim 1 is characterized in that: between the inwall of the anterior outer wall of described cutting ferrule (2) and the afterbody (11) of corresponding joint body (1) for being threaded.
6, according to the described corrugated pipe connector of each claim in the claim 1~5, it is characterized in that: head (12) outer wall of described joint body (1) is provided with outside thread.
7, according to the described corrugated pipe connector of each claim in the claim 1~5, it is characterized in that: the middle part of described joint body (1) is the hexagon nut shape for the spanner clamping.
CN2009100959864A 2009-02-25 2009-02-25 Corrugated pipe joint Expired - Fee Related CN101520116B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009100959864A CN101520116B (en) 2009-02-25 2009-02-25 Corrugated pipe joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009100959864A CN101520116B (en) 2009-02-25 2009-02-25 Corrugated pipe joint

Publications (2)

Publication Number Publication Date
CN101520116A true CN101520116A (en) 2009-09-02
CN101520116B CN101520116B (en) 2011-01-05

Family

ID=41080856

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009100959864A Expired - Fee Related CN101520116B (en) 2009-02-25 2009-02-25 Corrugated pipe joint

Country Status (1)

Country Link
CN (1) CN101520116B (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103292073A (en) * 2013-06-04 2013-09-11 无锡金顶石油管材配件制造有限公司 Petroleum pipe end connector
CN103292080A (en) * 2013-06-04 2013-09-11 无锡金顶石油管材配件制造有限公司 Petroleum pipeline with taper-thread structures
CN103363677A (en) * 2012-04-01 2013-10-23 广东万家乐燃气具有限公司 Solar water heater
CN103697267A (en) * 2009-09-11 2014-04-02 维克托里克公司 Assembly for connecting sprinkler to branch line of fire suppression system
CN104466833A (en) * 2014-11-14 2015-03-25 宁波南车时代传感技术有限公司 Corrugated hose connector
CN105006784A (en) * 2015-06-26 2015-10-28 宁波南车时代传感技术有限公司 Corrugated hose sealing joint
CN106015777A (en) * 2016-07-12 2016-10-12 福建圣达波纹管有限公司 Connecting joint for thread-wave corrugated pipes and use method of connecting joint
CN108468905A (en) * 2018-05-24 2018-08-31 海宁市晟达消防设备有限公司 A kind of nipple for connecting fire fighting device
CN108495688A (en) * 2016-02-02 2018-09-04 千住灭火器株式会社 The connection structure of fire-extinguishing apparatus piping
CN108506605A (en) * 2018-06-20 2018-09-07 王睿 A kind of hard seal bellows quick coupling with detection function
CN110939804A (en) * 2019-11-09 2020-03-31 宁波圣杰管业有限公司 Simple sealing joint for corrugated pipe
CN113464737A (en) * 2021-01-22 2021-10-01 中国人民解放军63653部队 Portable bellows connecting device
CN113757470A (en) * 2021-08-31 2021-12-07 西安交通大学 Connecting device and process of integrated corrugated pipe joint structure
CN114321531A (en) * 2022-02-08 2022-04-12 西安保力强液压传动有限公司 Hose anticreep mounting structure
CN114402160A (en) * 2019-06-28 2022-04-26 莱纳玛公司 Corrugations for expanding against rigid shapes
TWI781638B (en) * 2021-05-28 2022-10-21 林泰源 Pipe joint and its ferrule manufacturing method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201351782Y (en) * 2009-02-25 2009-11-25 张康盛 Bellows joint

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103697267A (en) * 2009-09-11 2014-04-02 维克托里克公司 Assembly for connecting sprinkler to branch line of fire suppression system
USRE49600E1 (en) 2009-09-11 2023-08-08 Victaulic Company Flexible assembly for sprinklers
US10478650B2 (en) 2009-09-11 2019-11-19 Victaulic Company Flexible assembly for sprinklers
CN103697267B (en) * 2009-09-11 2016-01-20 维克托里克公司 For the assembly making sprinkler be connected to the branch line of suppression system
US9375594B2 (en) 2009-09-11 2016-06-28 Victaulic Company Flexible assembly for sprinklers
CN103363677A (en) * 2012-04-01 2013-10-23 广东万家乐燃气具有限公司 Solar water heater
CN103363677B (en) * 2012-04-01 2015-07-29 广东万家乐燃气具有限公司 A kind of solar water heater
CN103292073A (en) * 2013-06-04 2013-09-11 无锡金顶石油管材配件制造有限公司 Petroleum pipe end connector
CN103292080A (en) * 2013-06-04 2013-09-11 无锡金顶石油管材配件制造有限公司 Petroleum pipeline with taper-thread structures
CN104466833B (en) * 2014-11-14 2018-05-22 宁波中车时代传感技术有限公司 Corrugated flexible hose connector
CN104466833A (en) * 2014-11-14 2015-03-25 宁波南车时代传感技术有限公司 Corrugated hose connector
CN105006784A (en) * 2015-06-26 2015-10-28 宁波南车时代传感技术有限公司 Corrugated hose sealing joint
CN108495688A (en) * 2016-02-02 2018-09-04 千住灭火器株式会社 The connection structure of fire-extinguishing apparatus piping
CN106015777A (en) * 2016-07-12 2016-10-12 福建圣达波纹管有限公司 Connecting joint for thread-wave corrugated pipes and use method of connecting joint
CN108468905A (en) * 2018-05-24 2018-08-31 海宁市晟达消防设备有限公司 A kind of nipple for connecting fire fighting device
CN108506605A (en) * 2018-06-20 2018-09-07 王睿 A kind of hard seal bellows quick coupling with detection function
CN114402160A (en) * 2019-06-28 2022-04-26 莱纳玛公司 Corrugations for expanding against rigid shapes
CN114402160B (en) * 2019-06-28 2024-03-12 莱纳玛公司 Bellows for expanding against rigid shapes
CN110939804A (en) * 2019-11-09 2020-03-31 宁波圣杰管业有限公司 Simple sealing joint for corrugated pipe
CN113464737A (en) * 2021-01-22 2021-10-01 中国人民解放军63653部队 Portable bellows connecting device
TWI781638B (en) * 2021-05-28 2022-10-21 林泰源 Pipe joint and its ferrule manufacturing method
CN113757470A (en) * 2021-08-31 2021-12-07 西安交通大学 Connecting device and process of integrated corrugated pipe joint structure
CN114321531A (en) * 2022-02-08 2022-04-12 西安保力强液压传动有限公司 Hose anticreep mounting structure

Also Published As

Publication number Publication date
CN101520116B (en) 2011-01-05

Similar Documents

Publication Publication Date Title
CN101520116B (en) Corrugated pipe joint
CN204533920U (en) A kind of bellows selfsealings positive mechanical formula clamp sleeve
CN201779381U (en) Gas delivering stainless steel corrugated hose joint component with leakage detection function
CN108779880B (en) Push-in type connects adapting device, arrangement and method
DE50301079D1 (en) CONNECTION FITTING
US8020899B2 (en) PVC pipe coupling
CN201351782Y (en) Bellows joint
CN202140719U (en) Quick connector for corrugated tube
CN1724919A (en) Fast adaptor used for corrugated metal flexible pipe
CN105423017A (en) Installation method for high-pressure pipeline connector
CN203549210U (en) Pipe connector structure
CN205479804U (en) Nonrust corrugated steel pipe is used in gas appliance connection that is suitable for multiple pipeline interface
CN201206685Y (en) Pipe joint
CN207316305U (en) A kind of bite type seal tube connector
CN1664429A (en) Quick coupler for corrugated flexible metal tube
CN206175839U (en) Jointing pipe
CN2821356Y (en) Quick joint for corrugated metal soft pipe
CN201521742U (en) Pipeline quick connector
CN204420410U (en) A kind of bellows positive mechanical formula clamp sleeve
CN107448713A (en) A kind of bite type seal tube joint
CN204420335U (en) A kind of bellows goes out wall mounting structure
CN205503031U (en) Adapter sleeve for oil drilling
CN105350925A (en) Anti-corrosion high-temperature-resistant lining structure for TP-JC oil well pipe with special thread
CN205244736U (en) Loss prevention water piping connection connects
CN202546087U (en) Quick coupler of flexible metal tube for conveying gas and liquid

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
ASS Succession or assignment of patent right

Free format text: FORMER OWNER: ZHANG JIANMEI ZHANG KEMEI

Owner name: ZHEJIANG SHENGZI PIPE INDUSTRY CO., LTD.

Free format text: FORMER OWNER: ZHANG KANGSHENG

Effective date: 20110610

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 315500 NINGBO SHENGZI MACHINE MANUFACTURING CO., LTD., NO. 115, SOUTH ROAD,XIWU TOWN, FENGHUA CITY, ZHEJIANG PROVINCE TO: 315500 NO. 115, SOUTH ROAD, XIWU SUBDISTRICT, FENGHUA CITY, ZHEJIANG PROVINCE

TR01 Transfer of patent right

Effective date of registration: 20110610

Address after: 315500 Zhejiang Province, Fenghua City Road No. 115 West Street

Patentee after: Zhejiang Sanzee Pipes Co., Ltd.

Address before: 315500 Zhejiang province Fenghua City Xiwu Town Road No. 115 Ningbo Shengzi Machinery Manufacturing Co. Ltd.

Co-patentee before: Zhang Jianmei

Patentee before: Zhang Kangsheng

Co-patentee before: Zhang Kemei

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110105

Termination date: 20150225

EXPY Termination of patent right or utility model