CN101670936B - Expansion scraper blade plate-type conveyer - Google Patents

Expansion scraper blade plate-type conveyer Download PDF

Info

Publication number
CN101670936B
CN101670936B CN2009101824370A CN200910182437A CN101670936B CN 101670936 B CN101670936 B CN 101670936B CN 2009101824370 A CN2009101824370 A CN 2009101824370A CN 200910182437 A CN200910182437 A CN 200910182437A CN 101670936 B CN101670936 B CN 101670936B
Authority
CN
China
Prior art keywords
plate
tail
scraper plate
conveyer
cam
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
Application number
CN2009101824370A
Other languages
Chinese (zh)
Other versions
CN101670936A (en
Inventor
许兆棠
曹进华
殷加良
张恒
姚志强
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.)
Huaian Grain & Feed Machinery Factory
Huaiyin Institute of Technology
Original Assignee
Huaian Grain & Feed Machinery Factory
Huaiyin Institute of Technology
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 Huaian Grain & Feed Machinery Factory, Huaiyin Institute of Technology filed Critical Huaian Grain & Feed Machinery Factory
Priority to CN2009101824370A priority Critical patent/CN101670936B/en
Publication of CN101670936A publication Critical patent/CN101670936A/en
Application granted granted Critical
Publication of CN101670936B publication Critical patent/CN101670936B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The invention discloses an expansion scraper blade plate-type conveyer, two ends of a frame are respectively mounted with a head pulley (7) and a tail pulley (1), a conveying chain (2) rounds the head pulley (7) and the tail pulley (1), supporting of the conveying chain (2) is located on a guide rail (4) of the frame, a lath (3) is fixed on the conveying chain (2), the expansion scraper blade is arranged on the conveying chain (2) and comprises a scraper blade (5), guide plates (9), connecting plates (13) and springs (14), a group of guide plates (9) are mounted on the conveying chain (2) at intervals, the scraper blade (5) is arranged among the guide plates (9), the connecting plates (13) are mounted at two sides of the scraper blade (5) in symmetry, at least one end of the two springs (14) is connected to the connecting plates (13), and the other end of each spring (14) is connected to the guide plates (9) and the scraper blade (5). The conveyer is used for conveying materials in bags at a large inclination angle, and is convenient to shift in a warehouse by smaller radius of gyration.

Description

Expansion scraper blade plate-type conveyer
Technical field
The present invention relates to apron conveyor, be specifically related to a kind of expansion scraper blade plate-type conveyer.
Background technology
Traditional fixedly scraper blade plate-type conveyer as shown in Figure 1, installation head, tail wheel on frame, conveyer chain are bearing on the guide rail and walk around head, tail wheel, scraper plate and batten are fixed on the conveyer chain, the whole apron conveyor that forms.Bagged material is placed on the batten top, and scraper plate promotes bagged material and advances with conveyer chain, realizes the conveying of bagged material.The scraper plate of this slat conveyer is non-telescoping, is fixing slat conveyer, and there are the following problems: be applicable to one, under the less situation in inclination angle and carry bagged material that when the inclination angle of conveyer was big, bagged material rolled down along conveyer chain easily, causes carrying failure; Two, because the inclination angle of conveyer is less, make its radius of turn bigger, be not easy in the warehouse, move; When three, the height of scraper plate is higher, be pressed in the scraper plate jack-up bagged material of bagged material below, the bag of meeting bursting bagged material.
Summary of the invention
The objective of the invention is to: a kind of expansion scraper blade plate-type conveyer is provided, one, the conveying inclination angle of conveyer is big, be applicable to that high spud angle carries bagged material; Two, radius of turn is less, is convenient to move in the warehouse; Three, flexible by scraper plate, stuck and scraper plate damages phenomenons such as bagged material bag by pressing plate in conveying to avoid bagged material.
Technical solution of the present invention is: this conveyer is formed by tail wheel, conveyer chain, batten, guide rail, scraper plate and great wheel are installed on the frame, two ends in frame are installed great wheel and tail wheel respectively, conveyer chain walk around great wheel and tail wheel and with great wheel and tail wheel engagement, conveyer chain is bearing on the guide rail that is positioned at frame, and batten is fixed on the conveyer chain; It is characterized in that: expansion scraper blade is installed on conveyer chain, described expansion scraper blade comprises scraper plate, guide plate, gusset piece and spring, interval type is installed one group of guide plate on the conveyer chain, scraper plate is positioned at the centre of guide plate, the bilateral symmetry of scraper plate is installed gusset piece, one end of at least two springs is connected on the gusset piece, and the other end of two springs is connected in respectively on guide plate and the scraper plate scraper plate is moved relative to guide plate.
In the expansion scraper blade plate-type conveyer of the present invention, many group gusset pieces and spring are installed in the bilateral symmetry of scraper plate.
In the expansion scraper blade plate-type conveyer of the present invention, gusset piece is
Figure GSB00000465842000021
Shape, spring are the two-man act parallel connection and series connection stretching form is installed on the gusset piece side by side; Spring can stretch, and is divided into two groups, and every group of spring has two, forms the two-man act parallel form; Two groups of spring symmetries are connected on the gusset piece, form the series connection form; The two ends of whole spring connect with scraper plate and guide plate respectively, form installation form arranged side by side.
In the expansion scraper blade plate-type conveyer of the present invention, auxiliary telescoping mechanism is installed on scraper plate, auxiliary telescoping mechanism comprises roller, tail cam and head cam, below scraper plate, be positioned at two ends roller is installed respectively, tail cam and head cam are installed respectively on the frame of tail and head, and roller contacts tail cam and head cam at tail respectively with the head place.
In the expansion scraper blade plate-type conveyer of the present invention, the class of a curve of described head cam and tail cam seemingly, cam curve connects straight line by the two ends of semi arch symmetry successively and curve integral body constitutes.
In the expansion scraper blade plate-type conveyer of the present invention, pressing plate is installed on frame of conveyer, the space of moving for bagged material between pressing plate and the batten.
Conveying principle of the present invention: great wheel is rotated, and drives conveyer chain and moves on guide rail; In the tail section of conveyer, scraper plate is punctured into apron conveyor, and bagged material is placed on the batten of tail, utilizes the friction force between batten and bagged material, and bagged material is moved on guide rail in company with conveyer chain; In the ascent stage of conveyer, scraper plate stretches out, and promotes bagged material and rises, and pressing plate is spacing simultaneously, bagged material is carried under high spud angle do not rolled down along conveyer chain; In the head section of conveyer, scraper plate is punctured into apron conveyor, utilizes the friction force between batten and bagged material, bagged material is moved on guide rail in company with conveyer chain, last under the action of gravity of bagged material, bagged material is realized the conveying of bagged material high spud angle in the output of head section.
The principle of work of expansion scraper blade of the present invention: in the head and the tail section of conveyer, head cam and tail cam shrink scraper plate by the roller mobile scraper; In the ascent stage of conveyer, head cam separates with roller with the tail cam, and scraper plate stretches out guide plate under the spring tension effect, and scraper plate is realized flexible in the conveyer chain motion; Wherein, when bagged material was pressed in the rising of scraper plate top, scraper plate was partly compressed.
The present invention has the following advantages: 1, adopt to stretch out scraper plate and stretch out scraper plate on a small quantity to push away, the spacing mode of pressing plate is carried bagged material simultaneously; In the ascent stage of conveyer, spring drives scraper plate and stretches out, and the scraper plate that stretches out promotes bagged material and rises; When the scraper plate of bagged material below was depressed by packed material, scraper plate did not stretch out, because the application force of spring produces friction force between scraper plate and bagged material, promoted the rising of bagged material; If when adorning bulk cargo in the bag, the scraper plate that stretches out is on a small quantity exerted pressure below bagged material, has little projection on the bag, scraper plate is gone up little projection by bag and is produced thrust, the rising of promotion bagged material.
2, stuck and scraper plate damages the phenomenon of bagged material bag by pressing plate to avoid bagged material, and spring makes the scraper plate that is pressed in the bagged material below not stretch out or stretch out on a small quantity, avoid bagged material stuck by pressing plate, and scraper plate damages the bag of bagged material; In the head section of conveyer, if scraper plate does not shrink, when the bagged material discharging falls, stretch out the outer scraper plate of great wheel and can run into bagged material, damage the bag and the scraper plate of bagged material, scraper plate shrinks, and the bag of bagged material and scraper plate damage in the time of can avoiding the bagged material discharging; In the tail section of conveyer, scraper plate shrinks, and also is for fear of the bag of bagged material and the damage of scraper plate; In the head and the tail section of conveyer, scraper plate shrinks, and also can avoid scraper plate to meet the staff of discharging of head place and the charging of tail place, safety in production.
3, scraper plate is capable of expansion and contraction, regulates arbitrarily; In the head and the tail section of conveyer, head cam and tail cam shrink scraper plate; In the ascent stage of conveyer, scraper plate stretches out under the spring tension effect, and when bagged material was pressed in the scraper plate top, scraper plate was partly compressed.
4, the scraper plate extension elongation adopts the two-man act parallel connection, the segmentation series connection stretches, mode of installing arranged side by side, be subjected to the restriction of sprocket diameter, roller is restricted to the ultimate range of guide plate, roller is to ultimate range one timing of guide plate, the extension elongation of scraper plate depends on the minor increment of roller to guide plate, spring is installed between guide plate and the scraper plate, roller between the guide plate apart from mounting spring, and be subjected to the restriction of spring free height, after spring is installed certain predetermincd tension should be arranged, when adopting single extension spring, the scraper plate extension elongation equals spring and stretches and reduce length, after spring is connected by gusset piece, the stretched length of spring is the stretched length sum of two sections springs, and the stretched length that the extension elongation of scraper plate equals two sections springs reduces sum, and spring adopts side by side and installs, roller is reduced to the minor increment of guide plate, increased the scraper plate extension elongation; Stretchable spring is divided into two sections, and every section spring has two, forms the two-man act parallel form, spring stand under load symmetry avoids gusset piece to be subjected to moment loading, and two-man act bears tensile load jointly simultaneously, the stand under load of every spring reduces, and the diameter of spring reduces, and is convenient to the side arrangement of spring at guide plate; Connect by gusset piece between two sections springs, form the series connection form, increase the scraper plate elongation; The two ends of whole spring connect with scraper plate and guide plate respectively, install side by side, make roller less to the minor increment of guide rail.
5, the retardation curves such as steady acceleration of head cam and tail cam wait scraper plate elder generation steady acceleration again to slow down and move, scraper plate stretch out and withdraw be hit and force of inertia less; Straight line stretches out scraper plate and withdraws stable; Semi arch does not move scraper plate to stretch out, to remain on retracted position.
Description of drawings
Fig. 1 is fixing scraper blade plate-type conveyer scheme drawing;
Fig. 2 is the expansion scraper blade plate-type conveyer scheme drawing;
Fig. 3 is the partial enlarged view of the tail of Fig. 2;
Fig. 4 is the partial enlarged view of the head of Fig. 2;
Fig. 5 is the partial enlarged view of the expansion scraper blade of Fig. 2;
Fig. 6 is the left view of Fig. 5;
Fig. 7 is the cam curve scheme drawing of the tail cam of Fig. 2.
Among the figure: 1 tail wheel; 2 conveyer chains; 3 battens; 4 guide rails; 5 scraper plates; 6 bagged materials; 7 great wheels; 8 tail cams; 9 guide plates; 10 pressing plates; 11 head cams; 12 rollers; 13 gusset pieces; 14 springs.
The specific embodiment
Shown in Fig. 2~7, this conveyer is formed by tail wheel 1, conveyer chain 2, batten 3, guide rail 4, scraper plate 5 and great wheel 7 are installed on the frame, at the two ends of frame great wheel 7 and tail wheel 1 are installed respectively, conveyer chain 2 walk around great wheel 7 and tail wheel 1 and with great wheel 7 and tail wheel 1 engagement, conveyer chain 2 is bearing on the guide rail 4 that is positioned at frame, and batten 3 is fixed on the conveyer chain 2; It is characterized in that: on conveyer chain 2, expansion scraper blade is installed, described expansion scraper blade comprises scraper plate 5, guide plate 9, gusset piece 13 and spring 14, interval type is installed one group of guide plate 9 on the conveyer chain 2, scraper plate 5 is positioned at the centre of guide plate 9, the bilateral symmetry of scraper plate 5 is installed gusset piece 13, one end of at least two springs 14 is connected on the gusset piece 13, and the other end of two springs 14 is connected in respectively on guide plate 9 and the scraper plate 5 scraper plate 5 is moved relative to guide plate 9.
In the expansion scraper blade plate-type conveyer of the present invention, many group gusset pieces 13 and spring 14 are installed in the bilateral symmetry of scraper plate 5.
In the expansion scraper blade plate-type conveyer of the present invention, gusset piece 13 is
Figure GSB00000465842000071
Shape, spring 14 are the two-man act parallel connection and series connection stretching form is installed on the gusset piece 13 side by side; Spring 14 can stretch, and is divided into two groups, and every group of spring 14 has two, forms the two-man act parallel form; Two groups of spring 14 symmetries are connected on the gusset piece 13, form the series connection form; The two ends of whole spring 14 connect with scraper plate 5 and guide plate 9 respectively, form installation form arranged side by side.
In the expansion scraper blade plate-type conveyer of the present invention, auxiliary telescoping mechanism is installed on scraper plate 5, auxiliary telescoping mechanism comprises roller 12, tail cam 8 and head cam 11, below scraper plate 5, be positioned at two ends roller 12 is installed respectively, tail cam 8 and head cam 11 are installed respectively on the frame of tail and head, and roller 12 contacts tail cam 8 and head cam 11 at tail respectively with the head place.
In the expansion scraper blade plate-type conveyer of the present invention, the class of a curve of described head cam 11 and tail cam 8 seemingly, cam curve connects straight line by the two ends of semi arch symmetry successively and curve integral body constitutes.
In the expansion scraper blade plate-type conveyer of the present invention, pressing plate 10, the space of moving for bagged material between pressing plate 10 and the batten 3 are installed on frame of conveyer.
Conveying principle of the present invention: great wheel 7 is rotated, and drives conveyer chain 2 and moves on guide rail 4; In the tail section of conveyer, tail cam 8 shrinks scraper plate 5 by roller 12 mobile scrapers 5, and bagged material 6 is placed on the batten 3 of tail, utilizes the friction force between batten 3 and the bagged material 6, and bagged material 6 is moved on guide rail 4 in company with conveyer chain 2; In the ascent stage of conveyer, tail cam 8 separates with roller 12, and scraper plate 5 stretches out under spring 14 tension, promotes bagged material 6 and rises; When the material in the bagged material 6 is wheat, rice, flour, the scraper plate 5 that dress wheat, the bagged material 6 of rice are depressed stretches out under spring 14 tension on a small quantity, little projection is arranged on the bag, scraper plate 5 is gone up little projection by bag, produce thrust, promote the rising of bagged material 6, pressing plate 10 is spacing simultaneously, bagged material 6 is carried under high spud angle do not rolled down along conveyer chain 2, the inclination angle of conveyer is not subjected to the restriction of material angle of repose; Head section at conveyer, head cam 11 is by roller 12 mobile scrapers 5, scraper plate 5 is shunk, utilize the friction force between batten 3 and the bagged material 6, bagged material 6 is moved on guide rail 4 in company with conveyer chain 2, last under the action of gravity of bagged material 6, bagged material 6 is realized the conveying of bagged material 6 high spud angles in the output of head section.
The principle of work of expansion scraper blade of the present invention: in the head and the tail section of conveyer, head cam 11 and tail cam 8 shrink scraper plate 5 by roller 12 mobile scrapers 5; In the ascent stage of conveyer, head cam 11 separates with roller 12 with tail cam 8, and scraper plate 5 stretches out guide plate 9 under spring 14 tension, and scraper plate 5 is stretched with realization in conveyer chain 2 motions and scraped; Wherein, when bagged material 6 was pressed in the rising of scraper plate 5 tops, scraper plate 5 was partly compressed.

Claims (4)

1. expansion scraper blade plate-type conveyer, this conveyer is formed by tail wheel (1), conveyer chain (2), batten (3), guide rail (4), scraper plate (5) and great wheel (7) are installed on the frame, great wheel (7) and tail wheel (1) are installed respectively at the two ends of frame, conveyer chain (2) walk around great wheel (7) and tail wheel (1) and with great wheel (7) and tail wheel (1) engagement, conveyer chain (2) is bearing on the guide rail (4) that is positioned at frame, and batten (3) is fixed on the conveyer chain (2); It is characterized in that: go up at conveyer chain (2) expansion scraper blade is installed, described expansion scraper blade comprises scraper plate (5), guide plate (9), gusset piece (13) and spring (14), conveyer chain (2) is gone up interval type one group of guide plate (9) is installed, scraper plate (5) is positioned at the centre of guide plate (9), the bilateral symmetry of scraper plate (5) is installed gusset piece (13), one end of at least two springs (14) is connected on the gusset piece (13), and the other end of two springs (14) is connected in respectively on guide plate (9) and the scraper plate (5) scraper plate (5) is moved relative to guide plate (9); Wherein, in the bilateral symmetry of scraper plate (5) many group gusset pieces (13) and spring (14) are installed; Wherein, gusset piece (13) is
Figure FSB00000482710100011
Shape, spring (14) is the both sides that the in parallel and series connection stretching form of two-man act is installed in scraper plate (5) side by side, wherein, spring (14) can stretch, and is divided into two groups, every group of spring (14) has two, form the two-man act parallel form, two groups of springs (14) symmetry is connected on the gusset piece (13), forms the series connection form, the two ends of whole spring (14) connect with scraper plate (5) and guide plate (9) respectively, form installation form arranged side by side.
2. expansion scraper blade plate-type conveyer according to claim 1, it is characterized in that: go up at scraper plate (5) auxiliary telescoping mechanism is installed, auxiliary telescoping mechanism comprises roller (12), tail cam (8) and head cam (11), be positioned at two ends in the below of scraper plate (5) roller (12) is installed respectively, tail cam (8) and head cam (11) are installed respectively on the frame of tail and head, and roller (12) contacts tail cam (8) and head cam (11) at tail respectively with the head place.
3. expansion scraper blade plate-type conveyer according to claim 2 is characterized in that: the class of a curve of described head cam (11) and tail cam (8) seemingly, cam curve connects straight line by the two ends of semi arch symmetry successively and curve integral body constitutes.
4. expansion scraper blade plate-type conveyer according to claim 1 is characterized in that: pressing plate (10) is installed, the space of moving for bagged material between pressing plate (10) and the batten (3) on frame of conveyer.
CN2009101824370A 2009-09-14 2009-09-14 Expansion scraper blade plate-type conveyer Expired - Fee Related CN101670936B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009101824370A CN101670936B (en) 2009-09-14 2009-09-14 Expansion scraper blade plate-type conveyer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009101824370A CN101670936B (en) 2009-09-14 2009-09-14 Expansion scraper blade plate-type conveyer

Publications (2)

Publication Number Publication Date
CN101670936A CN101670936A (en) 2010-03-17
CN101670936B true CN101670936B (en) 2011-07-20

Family

ID=42018402

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009101824370A Expired - Fee Related CN101670936B (en) 2009-09-14 2009-09-14 Expansion scraper blade plate-type conveyer

Country Status (1)

Country Link
CN (1) CN101670936B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2484614C2 (en) * 2011-08-22 2013-06-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Грозненский государственный нефтяной технический университет имени академика М.Д. Миллионщикова" Trailed device for bale loading
CN102764721B (en) * 2012-08-08 2015-01-07 青岛理工大学 Power generator crankshaft rust prevention device and process
CN104214786B (en) * 2014-09-03 2016-06-01 鞍钢集团矿业公司 Plate chain slag remover bent angle spacing protector
CN104477564A (en) * 2014-12-07 2015-04-01 常州市武进亚太机电配件有限公司 Conveyor belt
CN104773445A (en) * 2015-03-30 2015-07-15 苏州福润机械有限公司 Buried scraper conveyer
CN106705575B (en) * 2016-12-21 2022-07-22 上海永太汽车零部件有限公司 Spare and accessory oil filtering device
CN108163570B (en) * 2017-12-13 2020-04-28 中国科学院海洋研究所 Modified clay stores up and adds material device suitable for harmful algal bloom administers
CN108033204A (en) * 2018-01-16 2018-05-15 北京嘉寓门窗幕墙股份有限公司 One kind upset wing plate drag conveyor
CN114982466B (en) * 2022-06-07 2023-04-04 农业农村部南京农业机械化研究所 Harvester for harvesting vine melons and fruits

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4712670A (en) * 1984-12-12 1987-12-15 Volker Burkhardt Mechanism for the transportation of objects
EP0744499A1 (en) * 1995-04-28 1996-11-27 Pelerin Ateliers De Constructions D'orcamps Scraper blade for bucket chain
CN2434230Y (en) * 2000-07-25 2001-06-13 钟锦唐 Multiple sorts of materials pusher of packing machine
CN200978131Y (en) * 2006-12-08 2007-11-21 张兆奇 Closed type plate scraping feeder
CN201125070Y (en) * 2007-12-17 2008-10-01 霍春生 Scraper conveyor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4712670A (en) * 1984-12-12 1987-12-15 Volker Burkhardt Mechanism for the transportation of objects
EP0744499A1 (en) * 1995-04-28 1996-11-27 Pelerin Ateliers De Constructions D'orcamps Scraper blade for bucket chain
CN2434230Y (en) * 2000-07-25 2001-06-13 钟锦唐 Multiple sorts of materials pusher of packing machine
CN200978131Y (en) * 2006-12-08 2007-11-21 张兆奇 Closed type plate scraping feeder
CN201125070Y (en) * 2007-12-17 2008-10-01 霍春生 Scraper conveyor

Also Published As

Publication number Publication date
CN101670936A (en) 2010-03-17

Similar Documents

Publication Publication Date Title
CN101670936B (en) Expansion scraper blade plate-type conveyer
CN106429492A (en) Rapid stacking machine in container
CN101624130B (en) Self-moving belt machine tail part
CN107902338B (en) Movable telescopic belt conveyor for strip mine
CN201580768U (en) Inclination adjustable plate link chain hoister
CN100436291C (en) Conveyer for plate
CN2910849Y (en) Mobile type large inclination belt conveyer
CN202953396U (en) Inclined belt conveyor with conveying easiness
CN203529267U (en) Feeding plate type conveyor for automobile disassembly
CN204777191U (en) Telescopic belt conveyer's lower unsteady guide pulley structure
CN202807697U (en) Rotating shaft turn-over plate delivery device used for tunnel type drying machine
CN105883391A (en) Petroleum pipe conveying device
CN201882268U (en) Tile turning device
CN202017525U (en) Mining extensible belt conveyer
CN112160791B (en) Pumping rod type stepping self-moving machine body
CN204056980U (en) A kind of chain plate conveyer of coal briquette drier
CN101219733A (en) Rising large inclination angle belt conveyor of common rubber belt
JP7376241B2 (en) Conveyor and gangboard equipment
CN203714302U (en) Overload protection structure of material pushing mechanism
CN203318715U (en) Case packer
CN203682442U (en) Transmission mechanism of pitch conveyor
CN107434130B (en) Tire transfer device
CN207121141U (en) A kind of band continuous vertical conveyor of bucket type
CN214778617U (en) Rack and pinion formula belt is from moving tail adjusting device
CN107380904A (en) A kind of band continuous vertical conveyor of bucket type

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
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110720

Termination date: 20120914