JPH047233B2 - - Google Patents
Info
- Publication number
- JPH047233B2 JPH047233B2 JP60034415A JP3441585A JPH047233B2 JP H047233 B2 JPH047233 B2 JP H047233B2 JP 60034415 A JP60034415 A JP 60034415A JP 3441585 A JP3441585 A JP 3441585A JP H047233 B2 JPH047233 B2 JP H047233B2
- Authority
- JP
- Japan
- Prior art keywords
- head
- cylindrical body
- golf club
- sound
- hollow part
- 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
Links
- 238000005192 partition Methods 0.000 claims description 8
- 239000011358 absorbing material Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 description 13
- 239000002184 metal Substances 0.000 description 4
- 239000002023 wood Substances 0.000 description 3
- 235000011511 Diospyros Nutrition 0.000 description 2
- 244000236655 Diospyros kaki Species 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Golf Clubs (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明はゴルフクラブ用ヘツドに関する。[Detailed description of the invention] [Industrial application field] The present invention relates to heads for golf clubs.
一般に、ゴルフクラブでボールを打つ場合にプ
レーヤはスイング或いはボールのインパクトが適
切であつたか否かの判断を行なうが、ボールイン
パクト時のような高速衝突時にはプレーヤの目か
らの情報は全く当てにならない。そこで、通常は
プレーヤはインパタト時の打球音の音質の変化に
基づいてスイング或いはボールのインパクトが適
切であつたか否かの判断を行なつている。
Generally, when hitting a ball with a golf club, the player judges whether the swing or the impact of the ball was appropriate, but in the case of a high-speed collision like the one at ball impact, the information from the player's eyes is completely unreliable. . Therefore, players usually judge whether or not the swing or the impact of the ball was appropriate based on the change in the sound quality of the hit sound upon impact.
従来から各種の材料、例えばパーシモン、柿等
の木或いは金属、繊維強化プラスチツク等からな
るヘツドが使用されているが、従来においては、
ヘツドはその材質に応じて内部構造がほぼ一義的
に定まつていたため、従来のヘツドでは材質に特
有な音質の打撃音しか得られなかつた。。このた
め、プレーヤが材質の異なるヘツドのゴルフクラ
ブを使用した場合にはプレーの判断の基礎なる打
撃音の音質が変わつてしまい、スイングに悪影響
を及ぼすこととなつていた。このため、プレーヤ
が使用するゴルフクラブをヘツドの材質の異なる
ものに変更する場合の支障となつていた。 Heads made of various materials, such as wood such as persimmon or persimmon, metal, fiber-reinforced plastic, etc., have been used in the past.
Since the internal structure of the head is almost uniquely determined depending on the material of the head, conventional heads could only produce impact sounds with a sound quality specific to the material. . For this reason, when a player uses a golf club with a head made of a different material, the sound quality of the hitting sound, which is the basis of play decisions, changes, which has a negative effect on the golf swing. This poses a problem when a player changes the golf club used to one with a head made of a different material.
上記問題点を解決するための手段として、本発
明は、ヘツド本体の打球面の背後に中空部を設
け、前記ヘツド本体に前記ヘツド本体の壁部から
前記中空部内に向かつて延びる筒状体を設け、前
記筒状体の両端に開口する通孔を介して前記中空
部と前記ヘツド本体の外部とを連通してなるゴル
フクラブ用ヘツドを提供する。
As a means for solving the above-mentioned problems, the present invention provides a hollow portion behind the ball hitting surface of the head body, and a cylindrical body extending from the wall of the head body toward the inside of the hollow portion. The present invention provides a head for a golf club, in which the hollow portion and the outside of the head body are communicated through through holes opening at both ends of the cylindrical body.
上記手段によれば、ヘツド本体の中空部の容積
と、通孔の内径と、通孔を通る中空部とヘツド本
体の外部との間の空気通路の長さとを適宜に選定
することにより、ボールインパクト時の打球音を
所望の音質にすることができる。
According to the above means, by appropriately selecting the volume of the hollow part of the head body, the inner diameter of the through hole, and the length of the air passage between the hollow part passing through the through hole and the outside of the head body, the ball can be It is possible to make the ball hitting sound at the time of impact a desired sound quality.
通孔の長さおよび内径は所望の音質を得るよう
に予め設定しておくことができるが、筒状体をヘ
ツド本体に設けた取付け穴に対して通孔の長手方
向に位置調整可能に設け、中空部からヘツド本体
の外部までの空気通路の全長を可変とすることに
より、打撃音の音質を調整可能にすることもでき
る。また、筒状体を長さの異なるものに交換する
ことによつて打球音の音質を調整することもでき
る。 The length and inner diameter of the through hole can be set in advance to obtain the desired sound quality, but it is possible to adjust the position of the cylindrical body in the longitudinal direction of the through hole with respect to the mounting hole provided in the head body. By making the total length of the air passage from the hollow part to the outside of the head body variable, the quality of the impact sound can be adjusted. Furthermore, the quality of the hitting sound can be adjusted by replacing the cylindrical body with one having a different length.
例えば筒状体を長くすれば打球音は低音とな
り、短くすれば高音となる。 For example, if the cylindrical body is made long, the sound of the ball hit will be low-pitched, and if the cylindrical body is made short, the sound will be high-pitched.
更に、ヘツド本体に設けた取付け穴に対して筒
状体を通孔の長手方向に位置調整可能に設けると
ともに、筒状体に中空部の内面に摺動可能に嵌合
する隔壁体を一体に設けて中空部を隔壁体により
打球面の背後の前室とヘツド本体の後部側の後室
とに区画し、筒状体の位置調整により中空部から
ヘツド本体の外部までの通路全長を可変とすると
ともに、打球面の背後の前室の容積を可変とする
ことにより、打球音の音質を調整可能とすること
ができる。この場合、ヘツド本体の後部側の後室
内に伸縮性を有する吸音材を設ければ、後室内の
空振動による不要な音を吸収することができる。 Furthermore, a cylindrical body is provided in the mounting hole provided in the head body so that the position of the cylindrical body can be adjusted in the longitudinal direction of the hole, and a partition body that is slidably fitted to the inner surface of the hollow part is integrated into the cylindrical body. The hollow part is divided by a partition into a front chamber behind the ball-striking surface and a rear chamber on the rear side of the head body, and the total length of the passage from the hollow part to the outside of the head body can be varied by adjusting the position of the cylindrical body. In addition, by making the volume of the front chamber behind the ball hitting surface variable, the sound quality of the ball hitting sound can be adjusted. In this case, if a stretchable sound absorbing material is provided in the rear chamber on the rear side of the head main body, unnecessary sound caused by empty vibrations in the rear chamber can be absorbed.
以下、図面を参照して本発明の実施例を説明す
る。
Embodiments of the present invention will be described below with reference to the drawings.
第１図および第２図は本発明ををいわゆるウツ
ドタイプのクラブヘツドに適用した場合の第１実
施例を示すものである。これらの図を参照する
と、ネツク部を一体に有するヘツド本体１１は打
球面１２の背後に中空部１３を備えている。ヘツ
ド本体１１後部内壁には先端が打球面１２側に向
かつて延びる筒状体１４が一体に設けられてい
る。筒状体１４を長手方向に貫通する通孔１５に
より中空部１３とヘツド本体１１の外部とが連通
している。ヘツド本体１１は各種の材料で作るこ
とができるが、例えば、金属或いは炭素繊維、ガ
ラス繊維等で強化したプラスチツク等が好まし
い。金属で作る場合にはロストワツクス製法を用
いることができる。 1 and 2 show a first embodiment in which the present invention is applied to a so-called wood type club head. Referring to these figures, a head body 11 having an integral neck portion is provided with a hollow portion 13 behind a ball hitting surface 12. As shown in FIG. A cylindrical body 14 whose tip extends toward the ball hitting surface 12 is integrally provided on the rear inner wall of the head body 11. The hollow portion 13 and the outside of the head body 11 communicate with each other through a through hole 15 passing through the cylindrical body 14 in the longitudinal direction. Although the head body 11 can be made of various materials, it is preferably made of metal or plastic reinforced with carbon fiber, glass fiber, or the like. When making it from metal, the lost wax manufacturing method can be used.
上記構成を有するヘツドの打球音はヘツド本体
１１の材質や肉厚等の影響を受けるが、主として
空気振動による影響を受けるので、中空部１３の
容積Ｖと筒状体１４の通孔１５の長さｌとその内
径ｄとを適宜に選定することにより、所望の打球
音を得ることができる。この第１実施例では所望
の打球音が得られるように、予め中空部１３の容
積Ｖと筒状体１４の通孔１５の長さｌとその内径
ｄとが適宜に選定される。 The ball hitting sound of the head having the above structure is affected by the material and wall thickness of the head body 11, but is mainly affected by air vibration, so it is determined by the volume V of the hollow part 13 and the length of the through hole 15 of the cylindrical body 14. By appropriately selecting the radius l and the inner diameter d, a desired ball hitting sound can be obtained. In this first embodiment, the volume V of the hollow portion 13, the length l of the through hole 15 of the cylindrical body 14, and its inner diameter d are appropriately selected in advance so as to obtain a desired ball hitting sound.
第３図は本発明の第２実施例を示すものであ
る。図において上記実施例と同様の構成要素には
同一の参照付号が付されている。この実施例にお
いては筒状体１４がヘツド本体１１に設けた取付
け穴１６に対してその長手方向に位置調整可能に
設けられている。ここでは、筒状体１４の外周に
ねじ１７が設けられており、取付け穴１６の内面
には筒状体１４のねじ１７と螺合するねじ１８が
設けられている。通孔１５の後端側開口部１５ａ
は六角レンチに係合する六角面状に形成されてい
る。ヘツド本体１１は上記実施例と同様の材料で
同様の方法により作ることができる。筒状体１４
は金属等の機械加工により作ることができる。 FIG. 3 shows a second embodiment of the invention. In the figures, the same reference numerals are given to the same components as in the above embodiment. In this embodiment, a cylindrical body 14 is provided so that its position can be adjusted in the longitudinal direction with respect to a mounting hole 16 provided in the head body 11. Here, a screw 17 is provided on the outer periphery of the cylindrical body 14, and a screw 18 is provided on the inner surface of the mounting hole 16 to be screwed into the screw 17 of the cylindrical body 14. Rear end side opening 15a of through hole 15
is formed into a hexagonal shape that engages with a hexagonal wrench. The head body 11 can be made of the same materials and in the same manner as in the embodiments described above. Cylindrical body 14
can be made by machining metal, etc.
上記構成を有する第２実施例においては、上記
第１実施例と同様に、ヘツドの打球音はヘツド本
体１１の材質や肉厚等の影響を受けるが、主とし
て空気振動による影響を受けるので、中空部１３
の容積Ｖと、筒状体１４の通孔１５の内径ｄと、
通孔１５および取付け穴１６を通る空気通路の全
長l1とを適宜に選定することにより、所望の打球
音を得ることができる。この第２実施例では筒状
体１４を取付け穴１６に対してその長手方向に位
置調整することにより、中空部１３からヘツド本
体１１の外部までの空気通路の全長l1を可変とす
ることができるので、筒状体１４の位置調整によ
り打球音の音質を調整することができる。 In the second embodiment having the above configuration, similarly to the first embodiment, the ball hitting sound of the head is affected by the material and wall thickness of the head body 11, but is mainly affected by air vibration, Part 13
the volume V, the inner diameter d of the through hole 15 of the cylindrical body 14,
By appropriately selecting the total length l1 of the air passage passing through the through hole 15 and the mounting hole 16, a desired ball hitting sound can be obtained. In this second embodiment, by adjusting the position of the cylindrical body 14 in the longitudinal direction with respect to the mounting hole 16, the total length l1 of the air passage from the hollow part 13 to the outside of the head body 11 can be made variable. Therefore, the sound quality of the hitting sound can be adjusted by adjusting the position of the cylindrical body 14.
また、この第２実施例の場合、筒状体１４を長
さの異なるものに交換することにより、打球音の
音質を調整することができる。 Further, in the case of the second embodiment, the quality of the hitting sound can be adjusted by replacing the cylindrical body 14 with one having a different length.
なお、この第２実施例の場合、筒状体１４の外
周に雄ねじ１７が設けられていて真直ぐな形状を
なしているが、このような筒状体１４の代わり
に、長さの異なるゼンマイ状のパイプを取付け穴
１６に圧入して固定するようにしてもよい。 In the case of this second embodiment, a male thread 17 is provided on the outer periphery of the cylindrical body 14, which has a straight shape. Alternatively, the pipe may be press-fitted into the mounting hole 16 and fixed.
第４図および第５図は本発明の第３実施例を示
すものである。図において上記実施例と同様の構
成要素には同一の参照符号が付されている。 FIGS. 4 and 5 show a third embodiment of the present invention. In the figures, the same reference numerals are given to the same components as in the above embodiment.
この第３実施例では、筒状体１４の先端部に隔
壁体１９が一体に設けられており、隔壁体１９は
中空部１３の内面に臂可能に嵌合して中空部１３
を打球面１２の背後の前室２０とヘツド本体１１
の後部側の後室２１とに区画している。ヘツド本
体１１は例えば図中破線で示す箇所で相互溶接構
造とすることができ、溶接の前に中空部１３側か
ら隔壁体１９を有する筒状体１４をヘツド本体１
１に装着しておくことができる。 In this third embodiment, a partition body 19 is integrally provided at the distal end of the cylindrical body 14, and the partition body 19 fits into the inner surface of the hollow part 13 so as to be able to reach the inner surface of the hollow part 13.
The front chamber 20 behind the ball hitting surface 12 and the head body 11
It is divided into a rear chamber 21 on the rear side. For example, the head body 11 can have a mutually welded structure at the locations indicated by broken lines in the figure, and before welding, the cylindrical body 14 having the partition wall 19 is attached to the head body 1 from the hollow part 13 side.
It can be attached to 1.
この第３実施例においては、ヘツドの打球音は
ヘツド本体１１の材質や肉厚等の影響を受ける
が、主として空気振動による影響を受けるので、
通孔１５を介して外部と連通する前室２０の容積
V1と、筒状体１４の通孔１５の内径ｄと、通孔
１５および取付け穴１６を通る空気通路の全長l1
とを適宜に選定することにより、所望の打球音を
得ることができる。この第３実施例では筒状体１
４を取付け穴１６に対してその長手方向に位置調
整することにより、前室２０の容積V1と中空部
１３からヘツド本体１１の外部までの空気通路の
全長l1とを可変することができるので、筒状体１
４の位置調整により打球音の音質を調整すること
ができる。 In this third embodiment, the sound of the ball hit by the head is affected by the material and wall thickness of the head body 11, but is mainly affected by air vibration.
Volume of the front chamber 20 that communicates with the outside via the through hole 15
V 1 , the inner diameter d of the through hole 15 of the cylindrical body 14 , and the total length of the air passage passing through the through hole 15 and the mounting hole 16 l 1
By appropriately selecting these, a desired ball hitting sound can be obtained. In this third embodiment, the cylindrical body 1
4 in the longitudinal direction with respect to the mounting hole 16, the volume V1 of the front chamber 20 and the total length l1 of the air passage from the hollow part 13 to the outside of the head body 11 can be varied. Therefore, the cylindrical body 1
The sound quality of the hitting sound can be adjusted by adjusting the position of step 4.
なお、この第３実施例では、ヘツド本体１１の
後室２１内に伸縮性を有する吸音材２２が設けら
れているので、吸音材２２により後室２１内の空
気振動による不要な音を吸収することができる
が、後室２１内の空気振動による音の影響はそれ
程大きくないので、吸音材は省略してもよい。 In this third embodiment, the elastic sound absorbing material 22 is provided in the rear chamber 21 of the head main body 11, so that the sound absorbing material 22 absorbs unnecessary sound caused by air vibrations in the rear chamber 21. However, since the influence of sound due to air vibration in the rear chamber 21 is not so large, the sound absorbing material may be omitted.
以上実施例につき説明したが、本発明は上述し
た実施例の態様のみに限定されるものではなく、
特許請求の範囲に記載した発明の範囲内でその構
成要素に種々の変更を加えることができる。例え
ば、筒状体はヘツド本体の後部壁以外の場所、例
えば上部壁に設けるようにしてもよい。また、本
発明はウツドタイプのクラブヘツド以外のヘツド
にも同様に適用することができる。 Although the embodiments have been described above, the present invention is not limited only to the embodiments described above.
Various changes can be made to the constituent elements within the scope of the invention described in the claims. For example, the cylindrical body may be provided at a location other than the rear wall of the head body, for example, on the upper wall. Further, the present invention can be similarly applied to heads other than wood type club heads.
以上の説明から明らかなように、本発明によれ
ば、ヘツド本体の中空部の容積と、通孔の内径
と、通孔を通る中空部とヘツド本体の外部との間
の空気通路の長さを適宜に調整することにより、
ボールインパクト時の打球音を所望の音質にする
ことができる。従つて、プレーヤはヘツドの材質
の変更にかかわらず好みの一定の音質のヘツドを
使用することができるようになる。例えば、プレ
ーヤが使用するヘツドの材質を変更する場合であ
つても、材質の差による音質の差を少くすること
ができ、同じ音質の打球音のヘツドを使用するこ
とができるようになるので、変更前と同様のスイ
ング感覚でヘツドを使用できるようになり、スイ
ングの安定性が保たれるという効果がある。
As is clear from the above description, according to the present invention, the volume of the hollow part of the head body, the inner diameter of the through hole, and the length of the air passage between the hollow part passing through the through hole and the outside of the head body By adjusting appropriately,
It is possible to make the ball hitting sound at the time of ball impact a desired sound quality. Therefore, the player can use a head with the same desired sound quality regardless of changes in the material of the head. For example, even when changing the material of the head used by a player, the difference in sound quality due to the difference in material can be reduced, and heads with the same sound quality and hitting sound can be used. The head can now be used with the same swing feeling as before the change, and the effect is that the stability of the swing is maintained.
第１図は本発明の第１実施例を示すゴルフクラ
ブ用ヘツドの正面図、第２図は第１図に示すヘツ
ドの第１図中−線に沿つた断面図、第３図は
本発明の第２実施例を示す第２図と同様の断面
図、第４図は本発明の第３実施例を示すゴルフク
ラブ用ヘツドの正面図、第５図は第４図に示すヘ
ツドの第４図中Ｖ−Ｖ線に沿つた断面図である。
１１…ヘツド本体、１２…打球面、１３…中空
部、１４…筒状体、１５…通孔、１６…取付け
穴、１９…隔壁体、２０…前室、２１…後室、２
２…吸音材。
FIG. 1 is a front view of a head for a golf club showing a first embodiment of the present invention, FIG. 2 is a sectional view of the head shown in FIG. FIG. 4 is a front view of a golf club head showing a third embodiment of the present invention, and FIG. 5 is a sectional view similar to FIG. 2 showing a second embodiment of the present invention. It is a sectional view along line VV in the figure. DESCRIPTION OF SYMBOLS 11... Head body, 12... Ball hitting surface, 13... Hollow part, 14... Cylindrical body, 15... Through hole, 16... Mounting hole, 19... Partition body, 20... Front chamber, 21... Rear chamber, 2
2...Sound absorbing material.
Claims (1)
前記ヘツド本体の壁部に筒状体を設け、前記筒状
体の両端に開口する通孔を介して前記中空部と前
記ヘツド本体の外部とを連通してなるゴルフクラ
ブ用ヘツド。 ２ 前記筒状体が前記ヘツド本体の壁部から前記
中空部に向かつて延びていることを特徴とする特
許請求の範囲第１項に記載のゴルフクラブ用ヘツ
ド。 ３ 前記筒状体を前記ヘツド本体の壁部に設けた
取付け穴に対してその長手方向に位置調整可能に
設け、前記筒状体の位置調整により前記中空部か
ら前記ヘツド本体の外部までの通路全長を可変と
したことを特徴とする特許請求の範囲第１項に記
載のゴルフクラブ用ヘツド。 ４ 前記筒状体に前記中空部の内面に摺動可能に
嵌合する隔壁体を一体に設け、前記中空部を前記
隔壁体により打球面の背後の前室と前記ヘツド本
体の後部側の後室とに区画し、前記筒状体の位置
調整により前記前室の容積を可変としたことを特
徴とする特許請求の範囲第２項に記載のゴルフク
ラブ用ヘツド。 ５ 前記ヘツド本体の前記後室内に伸縮性を有す
る吸音材を設けたことを特徴とする特許請求の範
囲第４項に記載のゴルフクラブ用ヘツド。[Claims] 1. A hollow portion is provided behind the ball hitting surface of the head body,
A head for a golf club, wherein a cylindrical body is provided on a wall of the head body, and the hollow part and the outside of the head body are communicated through through holes opening at both ends of the cylindrical body. 2. The head for a golf club according to claim 1, wherein the cylindrical body extends from the wall of the head main body toward the hollow portion. 3. The cylindrical body is provided so that its position can be adjusted in the longitudinal direction with respect to a mounting hole provided in the wall of the head body, and by adjusting the position of the cylindrical body, a passage from the hollow portion to the outside of the head body is formed. The golf club head according to claim 1, characterized in that the overall length is variable. 4. A partition body that slidably fits into the inner surface of the hollow part is integrally provided in the cylindrical body, and the hollow part is connected to the front chamber behind the ball hitting surface and the back of the rear side of the head main body by the partition body. 3. The head for a golf club according to claim 2, wherein the front chamber is divided into two chambers, and the volume of the front chamber is made variable by adjusting the position of the cylindrical body. 5. The head for a golf club according to claim 4, wherein a sound absorbing material having elasticity is provided in the rear chamber of the head main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60034415A JPS61193680A (en) | 1985-02-25 | 1985-02-25 | Head for golf club |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60034415A JPS61193680A (en) | 1985-02-25 | 1985-02-25 | Head for golf club |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61193680A JPS61193680A (en) | 1986-08-28 |
| JPH047233B2 true JPH047233B2 (en) | 1992-02-10 |
Family
ID=12413563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60034415A Granted JPS61193680A (en) | 1985-02-25 | 1985-02-25 | Head for golf club |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61193680A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0390174A (en) * | 1989-06-14 | 1991-04-16 | Takashi Nakamura | Head of golf club |
| JP7339699B1 (en) * | 2022-02-21 | 2023-09-06 | 有限会社渥美文次商店 | Golf clubs and inserts for golf clubs |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5180428A (en) * | 1975-01-09 | 1976-07-14 | Nippon Musical Instruments Mfg |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4919859U (en) * | 1972-05-27 | 1974-02-20 |
-
1985
- 1985-02-25 JP JP60034415A patent/JPS61193680A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5180428A (en) * | 1975-01-09 | 1976-07-14 | Nippon Musical Instruments Mfg |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61193680A (en) | 1986-08-28 |
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