JP3422903B2 - Panel structure - Google Patents

Panel structure

Info

Publication number
JP3422903B2
JP3422903B2 JP05880597A JP5880597A JP3422903B2 JP 3422903 B2 JP3422903 B2 JP 3422903B2 JP 05880597 A JP05880597 A JP 05880597A JP 5880597 A JP5880597 A JP 5880597A JP 3422903 B2 JP3422903 B2 JP 3422903B2
Authority
JP
Japan
Prior art keywords
damping member
surface plate
reinforcing bar
panel structure
reinforcing
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 - Lifetime
Application number
JP05880597A
Other languages
Japanese (ja)
Other versions
JPH10252183A (en
Inventor
健一 岩沢
光一 中村
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.)
Yamaha Corp
Original Assignee
Yamaha Corp
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 Yamaha Corp filed Critical Yamaha Corp
Priority to JP05880597A priority Critical patent/JP3422903B2/en
Publication of JPH10252183A publication Critical patent/JPH10252183A/en
Application granted granted Critical
Publication of JP3422903B2 publication Critical patent/JP3422903B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Building Environments (AREA)
  • Securing Of Glass Panes Or The Like (AREA)

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明はパネル構造に係り、
更に詳しくは、パネルの表面板相互の共振を極力防止し
て遮音性能を向上させることができ、特に、ドアや間仕
切り等のパネル材としての利用に適したパネル構造に関
する。
TECHNICAL FIELD The present invention relates to a panel structure,
More specifically, the present invention relates to a panel structure that can prevent resonance between surface plates of a panel as much as possible and improve sound insulation performance, and is particularly suitable for use as a panel material such as a door or a partition.

【0002】[0002]

【従来の技術】公知のパネル構造としては、フレーム枠
の内側領域に複数本の補強桟を配設し、これらフレーム
枠及び補強桟の両側に一対配置となる表面板をそれぞれ
固定したものが知られている。
2. Description of the Related Art A known panel structure is one in which a plurality of reinforcing bars are arranged in an inner region of a frame, and a pair of surface plates are fixed to both sides of the frame and the reinforcing bars. Has been.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、このよ
うなパネル構造にあっては、前記表面板同士が補強桟に
よって直接的に連結されているため、表面板相互間の共
振作用を生じ易く、固体伝播を起こして遮音性能に劣る
という不都合がある。
However, in such a panel structure, since the surface plates are directly connected to each other by the reinforcing crosspiece, a resonance action between the surface plates is likely to occur, and the solid structure is solid. There is an inconvenience that the sound is propagated and the sound insulation performance is deteriorated.

【0004】そのため、最近では、補強桟と表面板との
間にシート状の制振部材を介装したパネルが出現するに
至っている。しかしながら、この構造では、制振部材自
体の平面積が大きくなるため、当該制振部材自体が重い
構成部材となり、パネル全体としての重量を不可避的に
増加させるという不都合を招来する。
Therefore, recently, a panel having a sheet-shaped damping member interposed between the reinforcing crosspiece and the surface plate has come to appear. However, in this structure, since the plane area of the vibration damping member itself becomes large, the vibration damping member itself becomes a heavy component member, which inevitably increases the weight of the entire panel.

【0005】[0005]

【発明の目的】本発明は、このような不都合に着目して
案出されたものであり、その目的は、表裏一対の配置と
なる表面板相互の共振を防止して遮音性能を向上させる
ことができ、且つ、パネル全体としての重量増も回避す
ることのできるパネル構造を提供することにある。
SUMMARY OF THE INVENTION The present invention has been devised in view of such inconvenience, and an object thereof is to prevent resonance between surface plates having a pair of front and back surfaces to improve sound insulation performance. Another object of the present invention is to provide a panel structure in which the weight of the panel as a whole can be avoided.

【0006】[0006]

【課題を解決するための手段】前記目的を達成するた
め、本発明は、第1の表面板と、当該第1の表面板との
間に補強桟を介して設けられた第2の表面板とを備えて
なるパネル構造において、前記補強桟と何れか一方の表
面板との間に、前記補強桟の幅程度の大きさを有する
性体からなる制振部材を介装し、当該制振部材はステイ
プラーのみにより前記補強桟に固定されているという構
成を採っている。このような構成によれば、制振部材の
存在によって、表面板相互の共振を極力防止でき、遮音
性能を向上させることが可能となる。また、補強桟の数
に等しい制振部材を用いれば足りる構成であるため、シ
ート状の制振部材を採用した従来構造に比べて、制振部
材全体としての重量を飛躍的に抑制することができ、パ
ネルが過大に重くなるという不都合も解消することがで
きる。
In order to achieve the above object, the present invention provides a second surface plate provided between a first surface plate and the first surface plate via a reinforcing bar. In a panel structure including: a bullet having a size about the width of the reinforcing bar between the reinforcing bar and one of the surface plates.
The damping member made of a flexible body is interposed, and the damping member is
The structure is such that it is fixed to the reinforcing bar only by the puller . With such a configuration, the presence of the vibration damping member makes it possible to prevent resonance between the surface plates as much as possible and improve the sound insulation performance. Further, since it is sufficient to use the damping members equal in number to the reinforcing bars, the weight of the damping member as a whole can be dramatically reduced as compared with the conventional structure using the sheet-shaped damping member. Therefore, it is possible to eliminate the inconvenience that the panel becomes excessively heavy.

【0007】本発明におけるパネル構造においては、第
1の表面板と、当該第1の表面板との間に補強桟を介し
て設けられた第2の表面板とを備えてなるパネル構造に
おいて、前記第1及び第2の表面板の内側に遮音シート
を張設し、前記補強桟と何れか一方の表面板との間に、
前記補強桟の幅程度の大きさを有する弾性体からなる制
振部材を介装し、当該制振部材はステイプラーのみによ
り前記補強桟に固定されている、という構成を採用する
こともできる。
In the panel structure according to the present invention, a panel structure comprising a first surface plate and a second surface plate provided between the first surface plate and a reinforcing bar is provided, A sound insulation sheet is stretched inside the first and second surface plates, and between the reinforcing bar and either one of the surface plates,
A damping member made of an elastic material having a size about the width of the reinforcing bar is interposed, and the damping member is formed only by a stapler.
It is also possible to adopt a configuration in which the reinforcement is fixed to the reinforcing bar .

【0008】また、前記制振部材は、静的圧縮弾性率が
1×10 5 〜1×10 8 (N/m 2 )のものにより構成するこ
とができる。
Further, the damping member has a static compression elastic modulus.
Consist of 1 × 10 5 to 1 × 10 8 (N / m 2 )
You can

【0009】[0009]

【実施例】以下、本発明の一実施例を図面を参照しなが
ら説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

【0010】図1には、本発明がドアパネルに適用され
た実施例の概略横断面図が示されている。この図におい
て、ドアパネル10は、第1の表面板11及び第2の表
面板12と、これら第1及び第2の表面板11,12の
外周に沿って位置する略方形のフレーム枠13と、前記
表面板11,12間及びフレーム枠13で囲まれる内部
の空間内に配置されるとともに、第1及び第2の表面板
11,12の上下方向に沿って相互に平行に配設された
複数本の補強桟15と、各補強桟15に一体化された制
振部材17と、各補強桟15及び制振部材17間の空間
を埋めるように充填されたグラスウール、ロックウール
等の吸音材18とを備えて構成されている。
FIG. 1 is a schematic cross-sectional view of an embodiment in which the present invention is applied to a door panel. In this figure, a door panel 10 includes a first surface plate 11 and a second surface plate 12, and a substantially rectangular frame 13 located along the outer circumferences of the first and second surface plates 11 and 12, A plurality of members arranged in parallel with each other along the vertical direction of the first and second surface plates 11 and 12 while being arranged between the surface plates 11 and 12 and in an internal space surrounded by the frame 13. Book reinforcing bars 15, damping members 17 integrated with each reinforcing bar 15, and sound absorbing material 18 such as glass wool and rock wool filled so as to fill the space between each reinforcing bar 15 and damping member 17. And is configured.

【0011】前記補強桟15は、図2及び図3に拡大し
て示されるように、角柱材によってそれぞれ構成されて
いるとともに、隣り合う補強桟15に対して千鳥配置と
なる相対位置に設けられている。すなわち、各補強桟1
5は、第1及び第2の表面板11,12の何れか一方に
対して直接的に接する状態に配設されている。また、表
面板11又は12に対して非接触となる面15Aと、こ
れに相対する表面板11又は12の内面との間の隙間C
内に制振部材17が介装されている。
As shown in the enlarged view of FIGS. 2 and 3, the reinforcing bars 15 are each formed of a prismatic material, and are provided at a relative position in a staggered arrangement with respect to the adjacent reinforcing bars 15. ing. That is, each reinforcing bar 1
5 is arranged in a state of being in direct contact with either one of the first and second surface plates 11 and 12. Further, a gap C between the surface 15A which is not in contact with the surface plate 11 or 12 and the inner surface of the surface plate 11 or 12 which faces the surface 15A.
A vibration damping member 17 is provided inside.

【0012】前記制振部材17は、本実施例では、補強
桟15の横幅Wよりも幅狭となる角棒形状のゴム、合成
ゴム、合成樹脂、合成樹脂発泡体等の弾性体により構成
されている。この制振部材17は、特に限定されるもの
ではないが、本実施例ではメラミン樹脂を原料とした吸
音性の高い弾性フォームであって、例えば、静的圧縮弾
性率が1×105〜1×108(N/m2)のものにより構成
され、これにより、制振部材17自体の軽量化が同時に
達成できるようになっている。
In the present embodiment, the vibration damping member 17 is made of an elastic body such as a rectangular bar-shaped rubber having a width narrower than the lateral width W of the reinforcing bar 15, synthetic rubber, synthetic resin, synthetic resin foam or the like. ing. The damping member 17 is not particularly limited, but in this embodiment, it is an elastic foam having a high sound absorbing property made of melamine resin as a raw material, and has a static compression elastic modulus of 1 × 10 5 to 1, for example. It is made of a material of × 10 8 (N / m 2 ), which makes it possible to simultaneously reduce the weight of the vibration damping member 17 itself.

【0013】前記補強桟15と制振部材17は、図3に
示されるように、それらの軸方向所定間隔毎にステイプ
ラー19によって相互に連結されている。この際、両者
の合わせ面に接着剤を用いることもできるが、第1及び
第2の表面板11,12の共振を極力抑制する上では、
接着剤を用いることなくステイプラー19のみの固定と
することが好ましい。
As shown in FIG. 3, the reinforcing bar 15 and the damping member 17 are connected to each other by a stapler 19 at predetermined intervals in the axial direction. At this time, an adhesive may be used on the mating surfaces of the two, but in order to suppress the resonance of the first and second face plates 11 and 12 as much as possible,
It is preferable to fix only the stapler 19 without using an adhesive.

【0014】なお、図1中符合20は第1及び第2の表
面板11,12の内面側に接着された遮音シートを示
し、符合21はガラス窓を示す。
Reference numeral 20 in FIG. 1 indicates a sound insulating sheet adhered to the inner surface side of the first and second surface plates 11 and 12, and reference numeral 21 indicates a glass window.

【0015】次に、前記ドアパネル10の組立方法につ
いて、図4及び図5をも参照しながら説明する。
Next, a method of assembling the door panel 10 will be described with reference to FIGS. 4 and 5.

【0016】ここでは、前記補強桟15に制振部材17
が予め固定されているものとし、また、第1及び第2の
表面板11,12の各内面に遮音シート20が予め張設
されているものとする。
Here, the damping member 17 is attached to the reinforcing bar 15.
Is preliminarily fixed, and the sound insulating sheet 20 is preliminarily stretched on the inner surface of each of the first and second surface plates 11 and 12.

【0017】初めに、第2の表面板12を適宜なプレス
装置の下型上面に略水平姿勢に設置しておき、この表面
板12の内面側にフレーム枠13を載せるとともに、当
該フレーム枠13の内側領域に、前記制振部材17を一
体化した補強桟15を配設する。この配設に際して、補
強桟15は、制振部材17が第1及び第2の表面板1
1,12の内面に対して交互に接するような千鳥配置と
する。この際、前記フレーム枠13、補強桟15及び制
振部材17における各表面板11,12との接触面に
は、図示しない接着剤が塗布される。
First, the second surface plate 12 is installed in a substantially horizontal posture on the upper surface of the lower die of an appropriate pressing device, the frame 13 is placed on the inner surface of the surface plate 12, and the frame 13 is also attached. A reinforcing bar 15 in which the damping member 17 is integrated is arranged in the inner region of the. In this arrangement, the reinforcing bar 15 has the vibration damping member 17 for the first and second surface plates 1.
The staggered arrangement is such that the inner surfaces of 1 and 12 are alternately in contact with each other. At this time, an adhesive agent (not shown) is applied to the contact surfaces of the frame frame 13, the reinforcing bar 15, and the vibration damping member 17 with the surface plates 11 and 12.

【0018】次いで、前記第1の表面板11を上方より
載せるようにして配置する。そして、図4に示されるよ
うに、プレス装置の上型を下降させて両面側からプレス
圧を付与し、中間にフレーム枠13、補強桟15及び制
振部材17を挟み込んで第1及び第2の表面板11,1
2を相互に連結する。
Next, the first surface plate 11 is arranged so as to be placed from above. Then, as shown in FIG. 4, the upper die of the pressing device is lowered to apply a pressing pressure from both sides, and the frame frame 13, the reinforcing bar 15 and the vibration damping member 17 are sandwiched between the first and second parts. Surface plate 11,1
2 are connected to each other.

【0019】このようにして相互に連結されたドアパネ
ル10においては、図6(A)に示されるように、補強
桟15側に生ずる振動は、制振部材17によって減衰さ
れて振動が伝達し難くなるように作用する。この一方、
図6(B)に示されるように、制振部材17側に生ずる
振動は、当該制振部材17によって振動が吸収される傾
向が強くなるため、補強桟15を通ずる振動はより一層
伝わり難くなる。
In the door panels 10 interconnected in this way, as shown in FIG. 6 (A), the vibration generated on the side of the reinforcing bar 15 is attenuated by the vibration damping member 17 so that it is difficult to transmit the vibration. Acts to become. On the other hand,
As shown in FIG. 6B, the vibration generated on the side of the vibration damping member 17 has a strong tendency to be absorbed by the vibration damping member 17, so that the vibration passing through the reinforcing bar 15 is further difficult to be transmitted. .

【0020】従って、前述のように、補強桟15並びに
制振部材17を千鳥配置とすることで、第1及び第2の
表面板11,12の何れの側からみても、吸音性能が略
吊り合った特性を発揮することとなる。
Therefore, as described above, by arranging the reinforcing bars 15 and the vibration damping members 17 in a zigzag manner, the sound absorbing performance is substantially suspended from either side of the first and second surface plates 11 and 12. It will exhibit suitable characteristics.

【0021】なお、前記実施例では、本発明がドアパネ
ルに適用された場合を図示、説明したが、本発明はこれ
に限定されるものでなく、間仕切り等を含む汎用型のパ
ネル材として広く適用することができる。また、制振部
材17は、スポンジ、ゴム等のクッション材によっても
構成することができる。要するに、本発明に係る制振部
材17は、一定の弾性を発揮することのできる種々の材
料を用いることができる。
In the above embodiments, the case where the present invention is applied to a door panel is shown and described, but the present invention is not limited to this, and is widely applied as a general-purpose panel material including a partition or the like. can do. The vibration damping member 17 can also be configured by a cushion material such as sponge or rubber. In short, the damping member 17 according to the present invention can use various materials that can exhibit a certain elasticity.

【0022】[0022]

【発明の効果】以上説明したように、本発明によれば、
補強桟と何れか一方の表面板との間に、補強桟の幅程度
の大きさを有する制振部材を介装したから、この制振部
材によって表面板相互の共振が極力防止されて遮音性能
を向上させることが可能となる。また、制振部材の大き
さを補強桟の幅程度にした構成によって、制振部材の総
重量を飛躍的に抑制することができ、パネルが過大に重
くなるという不都合も解消することができる。
As described above, according to the present invention,
Since a damping member having a size about the width of the reinforcing bar is interposed between the reinforcing bar and one of the surface plates, resonance between the surface plates is prevented as much as possible by this damping member, and the sound insulation performance is improved. It becomes possible to improve. Further, by adopting a configuration in which the size of the vibration damping member is about the width of the reinforcing bar, the total weight of the vibration damping member can be dramatically reduced, and the disadvantage that the panel becomes excessively heavy can be eliminated.

【0023】[0023]

【図面の簡単な説明】[Brief description of drawings]

【図1】 本発明がドアに適用された実施例を示す横断
面図。
FIG. 1 is a cross-sectional view showing an embodiment in which the present invention is applied to a door.

【図2】 前記ドアパネルの要部断面図。FIG. 2 is a sectional view of a main part of the door panel.

【図3】 前記実施例に係る補強桟と制振部材の固定方
法を示す斜視図。
FIG. 3 is a perspective view showing a method of fixing the reinforcing bar and the damping member according to the embodiment.

【図4】 前記実施例における表面板の相互連結方法を
示す説明図。
FIG. 4 is an explanatory view showing a method of interconnecting the surface plates in the above embodiment.

【図5】 前記実施例における組立方法を示す斜視図。FIG. 5 is a perspective view showing an assembly method in the embodiment.

【図6】 前記実施例の作用説明図。FIG. 6 is an explanatory view of the operation of the above embodiment.

【符号の説明】[Explanation of symbols]

10・・・ドアパネル、11・・・第1の表面板、12
・・・第2の表面板、15・・・補強桟、17・・・制
振部材、18・・・吸音材
10 ... Door panel, 11 ... First surface plate, 12
... Second surface plate, 15 ... Reinforcing bar, 17 ... Vibration damping member, 18 ... Sound absorbing material

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平6−58060(JP,A) 実開 平3−78887(JP,U) 実開 昭59−167106(JP,U)   ─────────────────────────────────────────────────── ─── Continued front page       (56) Reference JP-A-6-58060 (JP, A)                 Actual Kaihei 3-78887 (JP, U)                 Actual development Sho 59-167106 (JP, U)

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 第1の表面板と、当該第1の表面板との
間に補強桟を介して設けられた第2の表面板とを備えて
なるパネル構造において、前記補強桟と何れか一方の表
面板との間に、前記補強桟の幅程度の大きさを有する弾
性体からなる制振部材を介装し、当該制振部材はステイ
プラーのみにより前記補強桟に固定されていることを特
徴とするパネル構造。
1. A panel structure comprising a first surface plate and a second surface plate provided between the first surface plate and a reinforcing crosspiece, wherein any one of the reinforcing crosspieces is provided. A damping member made of an elastic body having a size about the width of the reinforcing bar is interposed between the one surface plate and the damping member, and the damping member is fixed to the reinforcing bar only by a stapler. Characteristic panel structure.
【請求項2】 第1の表面板と、当該第1の表面板との
間に補強桟を介して設けられた第2の表面板とを備えて
なるパネル構造において、前記第1及び第2の表面板の
内側に遮音シートを張設し、前記補強桟と何れか一方の
表面板との間に、前記補強桟の幅程度の大きさを有する
弾性体からなる制振部材を介装し、当該制振部材はステ
イプラーのみにより前記補強桟に固定されていることを
特徴とするパネル構造。
2. A panel structure comprising a first surface plate and a second surface plate provided between the first surface plate and a reinforcing crosspiece, the first surface plate and the second surface plate. A sound insulation sheet is stretched on the inside of the surface plate, and a damping member made of an elastic body having a size about the width of the reinforcing bar is interposed between the reinforcing bar and one of the surface plates. , The damping member is
A panel structure characterized in that it is fixed to the reinforcing bar only by an iplar .
JP05880597A 1997-03-13 1997-03-13 Panel structure Expired - Lifetime JP3422903B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP05880597A JP3422903B2 (en) 1997-03-13 1997-03-13 Panel structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP05880597A JP3422903B2 (en) 1997-03-13 1997-03-13 Panel structure

Publications (2)

Publication Number Publication Date
JPH10252183A JPH10252183A (en) 1998-09-22
JP3422903B2 true JP3422903B2 (en) 2003-07-07

Family

ID=13094825

Family Applications (1)

Application Number Title Priority Date Filing Date
JP05880597A Expired - Lifetime JP3422903B2 (en) 1997-03-13 1997-03-13 Panel structure

Country Status (1)

Country Link
JP (1) JP3422903B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012197666A (en) * 2011-03-07 2012-10-18 Kuraray Co Ltd Muntin member, sound insulation panel, and sound insulation method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6983498B2 (en) * 2016-10-13 2021-12-17 文化シヤッター株式会社 Water stop door
JP6862315B2 (en) * 2017-08-31 2021-04-21 積水樹脂株式会社 Soundproof panel
JP7302058B1 (en) * 2022-03-11 2023-07-03 大建工業株式会社 Base material for flash face material and flash face material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012197666A (en) * 2011-03-07 2012-10-18 Kuraray Co Ltd Muntin member, sound insulation panel, and sound insulation method

Also Published As

Publication number Publication date
JPH10252183A (en) 1998-09-22

Similar Documents

Publication Publication Date Title
US2069413A (en) Sound and vibration damping construction
US4422280A (en) Insulating glass unit
US20100133037A1 (en) Glazing unit with improved vibro-acoustic damping properties, method for making such glazing unit and method for acoustic protection in a vehicle passenger compartment
JP3422903B2 (en) Panel structure
JP3620570B2 (en) Partition panel structure
JP2609576B2 (en) Honeycomb panel
JP2008008342A (en) Vibration control device
JP3792395B2 (en) Building vibration control device
JP2002194817A (en) Vibration control building and vibration control material used therefor
JPH05133137A (en) Vibration damping device for building
KR910006049A (en) Elastic mounting for vehicle engine
JP3019792B2 (en) Seismic isolation support device
US20040154861A1 (en) Soundproofing panel
CN103888096B (en) Piezoelectric vibrating assembly
JP2500421B2 (en) Moving partition
JP3807497B2 (en) Seismic isolation damper
JP4058376B2 (en) Thermal insulation panel for building roof and thermal insulation structure using the panel
JP3465105B2 (en) Connection structure between base-isolated building and ground
JP3030532B2 (en) Moving wall sound insulation structure
JP2001152572A (en) Soundproof panel device
CN215108538U (en) Sound insulation wooden door
JP3121126B2 (en) Soundproof door
JP3422307B2 (en) Multi-layer soundproof panel and its connection structure
JP3114603B2 (en) Seismic isolation device
JP4460753B2 (en) Damping structure of buildings

Legal Events

Date Code Title Description
A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20001003

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313532

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090425

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090425

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100425

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110425

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120425

Year of fee payment: 9

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130425

Year of fee payment: 10

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140425

Year of fee payment: 11

EXPY Cancellation because of completion of term