CN102226352B - Curtain wall plate dry hanging construction member and construction method - Google Patents

Curtain wall plate dry hanging construction member and construction method Download PDF

Info

Publication number
CN102226352B
CN102226352B CN2011100922759A CN201110092275A CN102226352B CN 102226352 B CN102226352 B CN 102226352B CN 2011100922759 A CN2011100922759 A CN 2011100922759A CN 201110092275 A CN201110092275 A CN 201110092275A CN 102226352 B CN102226352 B CN 102226352B
Authority
CN
China
Prior art keywords
sheet material
plug
corner
shackle member
shaped column
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
CN2011100922759A
Other languages
Chinese (zh)
Other versions
CN102226352A (en
Inventor
王锦成
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.)
SHANGHAI BAOSHANG LOW CARBON BUILDING TECHNOLOGY CO., LTD.
Original Assignee
王锦成
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 王锦成 filed Critical 王锦成
Priority to CN2011100922759A priority Critical patent/CN102226352B/en
Publication of CN102226352A publication Critical patent/CN102226352A/en
Application granted granted Critical
Publication of CN102226352B publication Critical patent/CN102226352B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The invention discloses a curtain wall plate dry hanging construction member and construction method and relates to a curtain wall plate dry hanging construction member. The curtain wall plate dry hanging construction member is provided with four clamping parts, four angle joint parts, two plug-in connection parts and two pre-embedded bolts; the four clamping parts are identical F-shaped sectional bars, transverse bolt holes are arranged at two ends of the clamping parts, the angle joint parts are provided with transverse screw holes and longitudinal bolt holes, and the plug-in connection parts are provided with transverse bolt holes; a rectangular framework is defined by the four clamping parts, each of four corner parts of the rectangular framework is in transverse fixed connection with one angle joint part through a screw, the two plug-in connection parts are arranged at two ends of one clamping part, one edge of each plug-in connection part is positioned between the inner wall of the clamping part and the angle joint part, the other edge of each plug-in connection part leans against the bottom surface of the clamping part, the clamping part and one edge of the plug-in connection part are in transverse fixed connection with the angle joint part through screws, the two pre-embedded bolts are arranged in the longitudinal bolt holes of the angle joint parts, and the two pre-embedded bolts are positioned on the opposite sides of the two plug-in connection parts. By adopting the curtain wall plate dry hanging construction member, the stress concentration can be avoided, the strength of a plate is ensured, the mounting is convenient, and materials are saved.

Description

Cladding member of a kind of curtain wall panel and dry hanging construction method
Technical field
The present invention relates to cladding member of curtain wall panel and dry hanging construction method.
Background technology
When curtain wall is fitted up, often need sheet material cladding, cladding member that adopts at present and dry hanging construction method have many, differ from one another, but ubiquity mounting or dismounting inconvenience, cladding rear stability is not good enough to wait deficiency.
Publication number is that the application for a patent for invention of CN1259611 is on stone slab, to bring up several strong and reliable screws, with the metal suspension member structure trunks such as stone slab and body of wall or floor is fastenedly connected then; Can save characteristics such as a large amount of precious metals and expensive real estate, cost be low.This technical scheme need be holed on stone slab, can influence the intensity of sheet material, and it is concentrated to produce stress, causes stone slab to damage easily.
Summary of the invention
The purpose of this invention is to provide a kind of stress of avoiding and concentrate, guarantee timber intensity, cladding member of curtain wall panel and dry hanging construction method convenient, that save material are installed.
The cladding member of curtain wall panel of the present invention is provided with 4 shackle member, 4 corner connectors, 2 plug connectors and 2 pre-embedded bolts; Article 4, shackle member is identical F shape section bar, and the shackle member two ends are provided with the cross bolts hole, and 4 corner connectors are identical L-shaped section, and corner connector is provided with horizontal screw hole and longitudinal bolt hole, and 2 plug connectors are identical T shape section bar, and plug connector is provided with the cross bolts hole; Article 4, shackle member surrounds rectangular frame; 4 corner parts of rectangular frame laterally are connected through screw with 1 corner connector respectively, and 2 plug connectors are located at 1 shackle member two ends, and plug connector is on one side between this shackle member inwall and corner connector; The plug connector another side leans against this shackle member bottom surface; This shackle member and plug connector one side and corner connector laterally are connected through screw, and 2 pre-embedded bolts are located in the longitudinal bolt hole of corner connector, and 2 pre-embedded bolts are positioned at 2 plug connector offsides.
Said corner connector is the identical L-shaped section of both sides width preferably, and the horizontal screw hole of said corner connector is located at the corner connector both sides, and at least 1 cross bolts hole is all established on the corner connector both sides, and corner connector corner is located in the longitudinal bolt hole of said corner connector.
The cross bolts hole of said plug connector, one side preferably plug connector establish at least 1 cross bolts hole, an end outer of the another side of plug connector is provided with the semi arch opening.During construction, the semi arch opening is convenient to be stuck on the bolt outer wall, and plug connector can directly be pegged graft like this, and is very convenient.
Curtain wall panel dry hanging construction method of the present invention adopts above-mentioned cladding member, may further comprise the steps:
1, sheet material preliminary treatment: the periphery of planar rectangular sheet material that will be to be hung cuts out annular opening, also can directly adopt planar rectangular sheet material without cutting;
2, cladding member is installed: 4 edges of planar rectangular sheet material are embedded respectively in 1 shackle member, the chimeric firmly planar rectangular sheet material of the rectangular frame that 4 shackle member are surrounded, with rectangular frame locking, subsequent use again; Wherein, When having part planar rectangular sheet material that cladding member is installed; 2 plug connectors are taken out of service; The corner connector that 2 plug connector correspondences are connected directly is connected with shackle member, in the longitudinal bolt hole of corner connector, inserts pre-embedded bolt, and this part sheet material is that first sheet material when constructing uses specially;
3, erector's font column: earlier the upper wall and the lower wall of I-shaped column are all longitudinally made bolt hole at interval; On body of wall, confirm reference line; The I-shaped column that is shaped on bolt hole is fixed on the body of wall with longitudinal separation and parallel mode; I-shaped column lower wall is locked on the body of wall through bolt, and each I-shaped column is formed the keel frame;
4, mount sheet material:
The sheet material dried hanging method of same row: install successively from bottom to top, wherein
1) first sheet material is installed: first sheet material adopts the sheet material that plug connector is not installed described in the step 2; First sheet material left side, 2 corner connectors up and down cooperates with nut through pre-embedded bolt and is locked on the first I-shaped column; The first sheet material right side up and down 2 corner connectors cooperates with nut through pre-embedded bolt and is locked on the second adjacent I-shaped column; Overlap Upper gasket in advance before each pre-embedded bolt locking, each pad makes between the shackle member bottom surface and the first and second I-shaped column surfaces and forms the gap;
2) second sheet material is installed: second sheet material is longitudinally alignd with first sheet material; With the direct inserting step 4 the 1st of 2 plug connectors of being located at bottom, the second sheet material left and right sides) in the said gap of part, 2 pre-embedded bolts being located at top, the second sheet material left and right sides cooperate with nut and are locked at respectively on the first I-shaped column and the second I-shaped column; Also overlap Upper gasket in advance before 2 pre-embedded bolt lockings, each pad makes between the shackle member bottom surface and the first and second I-shaped column surfaces and forms the gap;
3) since the 3rd sheet material, the every sheet material all mounting method with second sheet material is identical;
The sheet material dried hanging method of adjacent row: an adjacent strake material dried hanging method is identical with the sheet material dried hanging method of the said same row of step 4, and each sheet material left side of an adjacent strake material is locked on the second I-shaped column, each sheet material right side of an adjacent strake material is locked on the 3rd I-shaped column.
In step 1), said annular opening is preferably L font or U font annular opening, and sheet material should be convex shape or I-shaped mutually along the cross section of thickness direction.
Compare with prior art, the present invention has following outstanding substantive distinguishing features and obvious improvement:
Article 4, the rectangular frame that surrounds of shackle member can firmly engage sheet material, keeps the good whole strength and stiffness, effectively avoids sheet material damaged; Sheet material can be made into than minimal thickness, can economize on resources greatly, reduces cost.Only need during installation each pre-embedded bolt inserted in the bolt hole of I-shaped column and get final product through nut check; Begin from second sheet material of hanging every row; All can the plug connector of second sheet material directly be inserted in the gap that forms between the shackle member bottom surface and the first and second I-shaped column surfaces; Install very conveniently, can significantly reduce labor intensity, improve efficiency of construction; Also can repeat dismounting, make sheet material be prone to change and reuse, thereby reduce solid refuse, the feature of environmental protection is good.Very firm with body of wall locking in addition, safety is good, does not have the stress concentration phenomenon, avoids sheet material to damage long service life.
Description of drawings
Fig. 1 is the cladding member decomposition texture of a curtain wall panel of the present invention sketch map.
Fig. 2 is the cladding member assembly structure of a curtain wall panel of the present invention sketch map.
Fig. 3 is curtain wall panel dry hanging construction method sketch map of the present invention (for avoiding numerous and diverse, first sheet material of the same row that only draw and second sheet material).
The specific embodiment
Referring to Fig. 1 and 2; The cladding member of curtain wall panel of the present invention is provided with 4 shackle member 1 (for avoiding numerous and diverse; 2 the adjacent shackle member of only drawing), 4 corner connectors 2 are (for avoiding numerous and diverse; Only draw 1), 2 plug connectors 3 (, only drawing 1) and 2 pre-embedded bolts 42 (, only drawing 1) for avoiding numerous and diverse for avoiding numerous and diverse.
Article 4, shackle member 1 is identical F shape section bar, and every shackle member 1 two ends symmetry is equipped with 2 cross bolts holes 11.4 corner connectors 2 are identical equilateral L-shaped section, and corner connector 2 both sides are equipped with 2 horizontal screw holes 21, and corner connector 2 corners are provided with longitudinal bolt hole 22, and pre-embedded bolt 42 is located in the longitudinal bolt hole 22.2 plug connectors 3 are located at 2 ends of 1 shackle member 1; Plug connector one side 32 is between one side of this shackle member 1 inwall and corner connector 2; Plug connector another side 33 leans against the bottom surface of this shackle member 1; This shackle member 1 laterally is connected through screw 41 with plug connector one side 32 and corner connector 2 on one side, and an end of plug connector another side 33 is along being provided with semi arch opening 331.2 pre-embedded bolts 42 are positioned at 2 plug connectors, 3 offside (see figure 2)s.
Referring to Fig. 1~3, curtain wall panel dry hanging construction method of the present invention adopts the cladding member of above-mentioned curtain wall panel, may further comprise the steps:
The periphery of the planar rectangular sheet material 5 that 1, sheet material 5 preliminary treatment will be to be hung cuts out L font annular opening 51, and sheet material should be convex shape mutually along the cross section of thickness direction.
2, the above-mentioned cladding member of installation embeds 4 edges of planar rectangular sheet material 5 respectively in the draw-in groove 111 of 1 shackle member 1; The chimeric firmly sheet material 5 of the rectangular frame that 4 shackle member 1 are surrounded; Place on each self-corresponding station respectively rectangular frame and required 2 pre-embedded bolts 42 and 2 plug connectors 3 and locking, subsequent use; When wherein having part sheet material 5 that cladding member is installed; Do not adopt with plug connector 3; In the longitudinal bolt hole 22 of the corner connector 2 corresponding, insert pre-embedded bolt 42 with plug connector 3 positions; The corner connector 2 that 2 plug connector 3 correspondences are connected directly is connected with shackle member 1, and this part sheet material is to use as first sheet material that mounts when constructing specially;
3, erector's font column 6 is seen Fig. 3; The upper wall and the lower wall of I-shaped column 6 for use are all longitudinally made bolt hole at interval; On body of wall P, confirm reference line by designing requirement; The I-shaped column 6 that is shaped on bolt hole is fixed on the body of wall P with longitudinal separation and parallel mode, and the spacing distance of adjacent I-shaped column 6 confirms that by designing requirement I-shaped column 6 lower walls are locked on the body of wall P through bolt 62; Each I-shaped column 6 is formed keel framves (for avoiding numerous and diverse, 1 I-shaped column 6 only draws);
4, mount sheet material:
The sheet material dried hanging method of same row: install successively from bottom to top, wherein
1) first sheet material is installed: first sheet material 5 adopts the sheet material that does not have plug connector 3 described in the step 2; First sheet material, 5 left sides up and down 2 corner connectors 2 cooperate with nut 43 through pre-embedded bolt 42 and are locked on the first I-shaped column 6; First sheet material, 5 right sides up and down 2 corner connectors also cooperate with nut 43 through pre-embedded bolt 42 and are locked on the second adjacent I-shaped column; Cover Upper gasket 63 on each pre-embedded bolt 42, each pad 63 make and form gap P1 between shackle member 1 bottom surface and the first I-shaped column 6 and the second I-shaped column surface;
2) second sheet material is installed: second sheet material 5 that will install cladding member longitudinally aligns with first sheet material 5 (not having plug connector 3); 2 plug connectors 3 that to be located at bottom, second sheet material, 5 left and right sides simultaneously directly insert among the above-mentioned gap P1, and 2 corner connectors 2 being located at top, second sheet material, 5 left and right sides are locked at respectively on the first I-shaped column 6 and the second I-shaped column through pre-embedded bolt 42;
3) since the 3rd sheet material, the every sheet material all mounting method with second sheet material 5 is identical;
The sheet material dried hanging method of adjacent row: an adjacent strake material dried hanging method is same as described above, and each sheet material left side of an adjacent strake material is locked on the second I-shaped column, each sheet material right side is locked on the 3rd I-shaped column.

Claims (6)

1. the cladding member of curtain wall panel is characterized in that being provided with 4 shackle member, 4 corner connectors, 2 plug connectors and 2 pre-embedded bolts; Article 4, shackle member is identical F shape section bar, and the shackle member two ends are provided with the cross bolts hole, and 4 corner connectors are identical L-shaped section, and corner connector is provided with horizontal screw hole and longitudinal bolt hole, and 2 plug connectors are identical T shape section bar, and plug connector is provided with the cross bolts hole; Article 4, shackle member surrounds rectangular frame; 4 corner parts of rectangular frame laterally are connected through screw with 1 corner connector respectively, and 2 plug connectors are located at 1 shackle member two ends, and plug connector is on one side between this shackle member inwall and corner connector; The plug connector another side leans against this shackle member bottom surface; This shackle member and plug connector one side and corner connector laterally are connected through screw, and 2 pre-embedded bolts are located in the longitudinal bolt hole of corner connector, and 2 pre-embedded bolts are positioned at 2 plug connector offsides.
2. the cladding member of a kind of curtain wall panel as claimed in claim 1 is characterized in that said corner connector is the identical L-shaped section of both sides width.
3. the cladding member of a kind of curtain wall panel as claimed in claim 1 is characterized in that the horizontal screw hole of said corner connector is located at the corner connector both sides, and at least 1 horizontal screw hole is all established on the corner connector both sides, and corner connector corner is located in the longitudinal bolt hole of said corner connector.
4. the cladding member of a kind of curtain wall panel as claimed in claim 1 is characterized in that the cross bolts hole of said plug connector, one side be at least 1 the cross bolts hole of establishing of plug connector, an end outer of the another side of plug connector is provided with the semi arch opening.
5. a curtain wall panel dry hanging construction method adopts like the described cladding member of one of claim 1~4, it is characterized in that may further comprise the steps:
1) sheet material preliminary treatment: the periphery of planar rectangular sheet material that will be to be hung cuts out annular opening;
2) cladding member is installed: 4 edges of planar rectangular sheet material are embedded respectively in 1 shackle member, the chimeric firmly planar rectangular sheet material of the rectangular frame that 4 shackle member are surrounded, with rectangular frame locking, subsequent use again; Wherein, When having part planar rectangular sheet material that cladding member is installed; 2 plug connectors are taken out of service; The corner connector that 2 plug connector correspondences are connected directly is connected with shackle member, in the longitudinal bolt hole of corner connector, inserts pre-embedded bolt, and this part sheet material is that first sheet material when constructing uses specially;
3) erector's font column: earlier the upper wall and the lower wall of I-shaped column are all longitudinally made bolt hole at interval; On body of wall, confirm reference line; The I-shaped column that is shaped on bolt hole is fixed on the body of wall with longitudinal separation and parallel mode; I-shaped column lower wall is locked on the body of wall through bolt, and each I-shaped column is formed the keel frame;
4) mount sheet material:
The sheet material dried hanging method of same row: install successively from bottom to top, wherein
(1) first sheet material is installed: first sheet material adopts the sheet material that plug connector is not installed described in the step 2; First sheet material left side, 2 corner connectors up and down cooperates with nut through pre-embedded bolt and is locked on the first I-shaped column; The first sheet material right side up and down 2 corner connectors cooperates with nut through pre-embedded bolt and is locked on the second adjacent I-shaped column; Overlap Upper gasket in advance before each pre-embedded bolt locking, each pad makes between the shackle member bottom surface and the first and second I-shaped column surfaces and forms the gap;
(2) second sheet material is installed: second sheet material is longitudinally alignd with first sheet material; With the direct inserting step 4 of 2 plug connectors of being located at bottom, the second sheet material left and right sides) in the said gap of (1) part, 2 pre-embedded bolts being located at top, the second sheet material left and right sides cooperate with nut and are locked at respectively on the first I-shaped column and the second I-shaped column; Also overlap Upper gasket in advance before 2 pre-embedded bolt lockings, each pad makes between the shackle member bottom surface and the first and second I-shaped column surfaces and forms the gap;
(3) since the 3rd sheet material, the every sheet material all mounting method with second sheet material is identical;
The sheet material dried hanging method of adjacent row: an adjacent strake material dried hanging method is identical with the sheet material dried hanging method of the said same row of step 4), and each sheet material left side of an adjacent strake material is locked on the second I-shaped column, each sheet material right side of an adjacent strake material is locked on the 3rd I-shaped column.
6. a kind of curtain wall panel dry hanging construction method as claimed in claim 5 is characterized in that in step 1) said annular opening is L font or U font annular opening, and sheet material should be convex shape or I-shaped mutually along the cross section of thickness direction.
CN2011100922759A 2011-04-13 2011-04-13 Curtain wall plate dry hanging construction member and construction method Expired - Fee Related CN102226352B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011100922759A CN102226352B (en) 2011-04-13 2011-04-13 Curtain wall plate dry hanging construction member and construction method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011100922759A CN102226352B (en) 2011-04-13 2011-04-13 Curtain wall plate dry hanging construction member and construction method

Publications (2)

Publication Number Publication Date
CN102226352A CN102226352A (en) 2011-10-26
CN102226352B true CN102226352B (en) 2012-07-11

Family

ID=44807346

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011100922759A Expired - Fee Related CN102226352B (en) 2011-04-13 2011-04-13 Curtain wall plate dry hanging construction member and construction method

Country Status (1)

Country Link
CN (1) CN102226352B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103225359A (en) * 2013-04-15 2013-07-31 广东金刚幕墙工程有限公司 High-rise energy-saving unit stone curtain wall
CN104191530B (en) * 2014-08-08 2015-11-18 浙江亚厦幕墙有限公司 A kind of processing unit (plant) of stone curtain wall plate mounting groove
CN111980244B (en) * 2020-08-21 2021-09-24 中建新科装饰工程有限公司 Concatenation formula glass curtain wall
CN113374137A (en) * 2021-07-08 2021-09-10 王梓楠 Building curtain wall convenient to disassemble and assemble

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2332766Y (en) * 1998-08-24 1999-08-11 王召鹏 Dry hanging fixer for outer curtain wall decorative stone of building
CN2405985Y (en) * 2000-01-14 2000-11-15 徐跃华 Fastener for stone-ceramic plate
CN2424251Y (en) * 2000-03-23 2001-03-21 梁耀全 Dry hanging fixing article for stone wall
JP3980391B2 (en) * 2002-03-29 2007-09-26 功 小島 Wooden building
CN2644552Y (en) * 2003-08-04 2004-09-29 中建一局建设发展公司 Fixture for direct hanging stone on a slotted stone curtain wall

Also Published As

Publication number Publication date
CN102226352A (en) 2011-10-26

Similar Documents

Publication Publication Date Title
CN102226352B (en) Curtain wall plate dry hanging construction member and construction method
KR101211481B1 (en) A fixing apparatus of a stone panel which is to be quake-proof
CN107119876B (en) Embedded wallboard
CN203320756U (en) Combined curtain wall keel
CN203230142U (en) Outdoor wood-plastic floor mounting structure
CN102900193A (en) Cellular board ceiling system
CN111809823A (en) Indoor wall surface stone decorative plate semi-unit type dry hanging system and installation method thereof
CN211523646U (en) Panel connector and hanging type partition wall applied to same
CN205597577U (en) Bed frame structure convenient to dismouting
CN107254927A (en) A kind of cloudy Corner Link of stone curtain wall and application method
CN115182537A (en) Installation structure and construction method of metal composite wallboard
CN211007656U (en) Reinforcement system of wall building template
CN204378625U (en) A kind of showcase framework
CN212836151U (en) Steel frame dry hanging system
CN113756507A (en) Single-layer keel top-attached assembled ceiling and mounting method
CN202577696U (en) Steel broken bridge glass curtain assembly
CN106864934A (en) A kind of article transferring pallet component and its reception pallet and conveyer method
CN207130945U (en) A kind of stone curtain wall the moon Corner Link
CN212295460U (en) Semi-unit type dry hanging system for indoor wall surface stone decorative plate
CN202227557U (en) Keel and cellular board suspended ceiling system constructed by same
CN216075851U (en) Single-layer keel top-attaching assembly type suspended ceiling
CN211229329U (en) Connecting component for decorating part and building main body for architectural decoration
CN203222991U (en) Expansion joint template
CN203713712U (en) Walking board component and engineering machine applying same
CN108377122A (en) A kind of flat roof deck photovoltaic bracket system

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

Owner name: SHANGHAI STAR STEEL STRUCTURE ENGINEERING CO., LTD

Free format text: FORMER OWNER: WANG JINCHENG

Effective date: 20140513

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

Free format text: CORRECT: ADDRESS; FROM: 363200 ZHANGZHOU, FUJIAN PROVINCE TO: 201900 BAOSHAN, SHANGHAI

TR01 Transfer of patent right

Effective date of registration: 20140513

Address after: 201900, room 2, building 1568, No. 406 West Changjiang Road, Shanghai, Baoshan District

Patentee after: SHANGHAI STAR STEEL STRUCTURE ENGINEERING CO., LTD.

Address before: Zhangpu County, Fujian province 363200 Zhangzhou City Sui Zhen Ying Rui Yan Village Club No. 88

Patentee before: Wang Jincheng

C56 Change in the name or address of the patentee

Owner name: SHANGHAI BAOSHANG LOW CARBON BUILDING TECHNOLOGY C

Free format text: FORMER NAME: SHANGHAI STAR STEEL STRUCTURE ENGINEERING CO., LTD.

CP01 Change in the name or title of a patent holder

Address after: 201900, room 2, building 1568, No. 406 West Changjiang Road, Shanghai, Baoshan District

Patentee after: SHANGHAI BAOSHANG LOW CARBON BUILDING TECHNOLOGY CO., LTD.

Address before: 201900, room 2, building 1568, No. 406 West Changjiang Road, Shanghai, Baoshan District

Patentee before: SHANGHAI STAR STEEL STRUCTURE ENGINEERING CO., LTD.

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

Granted publication date: 20120711

Termination date: 20200413

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