JPS584641Y2 - Side cutter for woodworking - Google Patents
Side cutter for woodworkingInfo
- Publication number
- JPS584641Y2 JPS584641Y2 JP8506179U JP8506179U JPS584641Y2 JP S584641 Y2 JPS584641 Y2 JP S584641Y2 JP 8506179 U JP8506179 U JP 8506179U JP 8506179 U JP8506179 U JP 8506179U JP S584641 Y2 JPS584641 Y2 JP S584641Y2
- Authority
- JP
- Japan
- Prior art keywords
- rotary blade
- bearing
- diameter
- blade
- mounting
- 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
Links
Landscapes
- Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
Description
【考案の詳細な説明】
この考案は、木材の側面に沿って、一定深さの溝を掘る
□ととのできる木工用す゛イト窃ツターに関する。[Detailed description of the invention] This invention relates to a cutting tool for woodworking that can dig a groove of a certain depth along the side of a piece of wood.
木材の側面に一定深さの溝を切るには、回転刃を取りつ
けた電動工具を、二余高さを保ちながら、木材面に当て
がって、漸進させれば良い。To cut a groove of a certain depth on the side of a piece of wood, all you need to do is hold a power tool equipped with a rotating blade against the wood surface at a height of about 2 feet, and move it gradually.
しかし、木工用カッターは片もち梁になっているから、
軸が垂直方向にふるえ、溝の深さにムラの生ずる惧れが
ある。However, since the wood cutter has a single-sided beam,
There is a risk that the shaft will tremble in the vertical direction, causing uneven groove depth.
そとで、回転刃の外側に案内軸受を取付けるようにした
サイドカッターが作られた。As a result, a side cutter was created in which a guide bearing was attached to the outside of the rotating blade.
すなわち、回転刃の外側に軸受を新しく設け、内輪を回
転刃と取付軸の端面に当てて座金、ビスでより外側から
強く締めつけたものである。That is, a new bearing is installed on the outside of the rotary blade, the inner ring is placed against the end face of the rotary blade and the mounting shaft, and the washer and screw are tightly tightened from the outside.
内輪の内径とビスの外径はほぼ等しいので、□軸受は、
取付軸の中心線に対して回転対称の位置に固定さλる。Since the inner diameter of the inner ring and the outer diameter of the screw are almost equal, the □bearing is
It is fixed at a rotationally symmetrical position with respect to the center line of the mounting shaft.
つ普り、軸中心線と軸受中心線はほぼ一致する。As a matter of fact, the shaft centerline and the bearing centerline almost coincide.
回転刃から見れば、軸はほぼ両もち状態に近くなる。When viewed from the rotating blade, the shaft is almost in a state of having both ends.
軸受外輪は木材表面を転動し、木材表面から支持力を受
けるからである。This is because the bearing outer ring rolls on the wood surface and receives support from the wood surface.
さらに有益な点は、溝の深さの一様性が向上する、とい
う事である。A further advantage is that the uniformity of groove depth is improved.
溝の深さを、回転刃と案内軸受の差の半分である。The depth of the groove is half the difference between the rotary blade and the guide bearing.
血烏な深さの溝を切る′斧込には、直径の異な乞回転刃
、或は直径の異なる案内軸受を取揃えておかなければな
らない。To cut grooves of extremely deep depths, it is necessary to have rotary blades of different diameters or guide bearings of different diameters.
溝の幅は回転刃の刃幅に等しい。The width of the groove is equal to the blade width of the rotary blade.
深さと、幅とについて多種類の回転刃、軸受を１へ 用意しなければ澄ら渣イカ、工具の数は少い方が良い。Various types of rotary blades and bearings in terms of depth and width. The fewer tools you have, the better.
軸受を１種類とすると、回転刃は深き、娠１ についてめ段階数Ｅ、Ｆの積ＥＦだけ必要である。If there is only one type of bearing, the rotating blade will be deep and Only the product EF of the number of stages E and F is required.
増に回転刃の直径は一定で、刃軸の異なるものＦ個を用
意し、軸受をＥ個揃えても、同じだけの深さ、幅の溝を
切る事ができる。Furthermore, even if the diameter of the rotary blade is constant, F blades with different axes are prepared, and E bearings are arranged, grooves of the same depth and width can be cut.
この方が部品点１１ １ １
。This one has 11 parts points 1 1
.
数が少ない。There are few.
、：そこで、回転刃の直径は一定とし、溝の深さの調節
す、案内軸受の直径を変える事にする。Therefore, the diameter of the rotary blade is fixed, and the depth of the groove is adjusted and the diameter of the guide bearing is changed.
つ１す、８種類の外径の異なる軸受を揃える。First, eight types of bearings with different outer diameters are available.
小径の軸受の場合、前述のようにビスによって中心を支
持しても良い。In the case of a small diameter bearing, the center may be supported by a screw as described above.
あｌりがたつきもなりからである。This is because there is a lot of rattling.
しかし、外在の大きい軸受もビスによって内径の中心を
支持するのでは、回転面に対して左右にフレる事がある
。However, if the center of the inner diameter of a bearing with a large external diameter is supported by a screw, it may flex to the left or right with respect to the rotating surface.
内径はビス径にほぼ等しいカヘ外径に対する比率が小さ
いので、支持力が貧弱である。Since the ratio of the inner diameter to the outer diameter of the screw, which is approximately equal to the screw diameter, is small, the supporting force is poor.
外径の大きい軸受は、小径の軸受より、ボールも大きく
なる場合が多い。Bearings with a larger outer diameter often have larger balls than bearings with a smaller diameter.
ボールが大きいと、軸受の厚みがふえる。If the balls are large, the thickness of the bearing will increase.
外径の大小に拘らず、回転刃と軸の端面に押し当てビス
で固定できるようにする為には、軸受の厚みを等しくし
なければならない。Regardless of the size of the outer diameter, the thickness of the bearing must be the same in order to be able to press the rotary blade against the end face of the shaft and fix it with a screw.
つ１リポールの大きさは殆んど変わらない。The size of the 1-repoll remains almost unchanged.
つ１り規格品では適当なものがないということになる。This means that there is no suitable standard product.
本考案はこれらの難点を解決することを目的とする。The present invention aims to solve these difficulties.
本考案の木工用サイドカッターは、大径の案内軸受は、
内径も広くシ、回転刃のボス部に段を設け、軸受内径を
ボス部外径に等しくしている。The woodworking side cutter of this invention has a large diameter guide bearing.
The inner diameter is also wide, and the boss of the rotary blade is stepped, making the inner diameter of the bearing equal to the outer diameter of the boss.
軸受をボス部に嵌めこんで、段と座金とで軸受内輪を挾
み強圧固定したものである。The bearing is fitted into the boss, and the inner ring of the bearing is sandwiched between a step and a washer and fixed under strong pressure.
ビスによって支持せず、回転刃のボスにより支持したも
のである。It is not supported by screws, but supported by the boss of the rotary blade.
これが特徴である。勿論、小径の軸受は従前どおり、ビ
ス外径によって中心を指定する。This is its characteristic. Of course, for small diameter bearings, the center is specified by the outside diameter of the screw as before.
以下、実施例を示す図面によって説明する。Embodiments will be described below with reference to drawings showing examples.
第１図は木工用サイドカッターの使用状態を示す斜視図
である。FIG. 1 is a perspective view showing how the side cutter for woodworking is used.
電動機Ｍ（バンプートリマー１．ハンチ−ルータ、ルー
タ−マシン）の回転軸にチャック等ヲ介してカッター１
の軸が取付けである。The cutter 1 is attached to the rotating shaft of the electric motor M (bump trimmer 1, haunch router, router machine) through a chuck, etc.
The shaft is attached.
電動機Ｍの前方に作業板Ｐを設けておく。A work plate P is provided in front of the electric motor M.
被加工木材Ｈは作業板Ｐ上を滑らせながら、カッターで
溝を切ってゆく。The wood H to be processed is slid on the work plate P while cutting grooves with a cutter.
第２図はカッター近傍の拡大断面図である。FIG. 2 is an enlarged sectional view of the vicinity of the cutter.
被加工木材Ｈは、作業板ＰｖＣ，接触し、しかも、軸受
３にも接触規制される。The wood H to be processed comes into contact with the work plate PvC, and is also restricted from coming into contact with the bearing 3.
溝の深さは、回転刃１の半径と、軸受３の半径の羊によ
り決壕る。The depth of the groove is determined by the radius of the rotary blade 1 and the radius of the bearing 3.
本考案の実施例に係る木工用サイドカ、ツタ−の正面図
、右側面図を第３図、第４図に示す。A front view and a right side view of a woodworking side cover and ivy according to an embodiment of the present invention are shown in FIGS. 3 and 4.
第５図は回転刃のみの背面図である。FIG. 5 is a rear view of only the rotary blade.
第６図は小径の軸受を取付けた時の回転刃近傍の一部拡
大断面図である。FIG. 6 is a partially enlarged sectional view of the vicinity of the rotary blade when a small diameter bearing is attached.
これは公知の取付構造にすぎない。１ずこの取付構造を
説明する。This is only a known mounting structure. 1. The mounting structure of Zuko will be explained.
回転刃１は、取付軸２の一端に螺止めされる。The rotary blade 1 is screwed onto one end of the mounting shaft 2.
回転刃１と取付軸２の端面ばほぼ同一面となる。The end surfaces of the rotary blade 1 and the mounting shaft 2 are substantially on the same surface.
面一（つらいち）でやる。We will do it face-to-face.
軸受３は取付軸２、回転刃１の端面に、取付用ビス４で
固着する。The bearing 3 is fixed to the mounting shaft 2 and the end face of the rotary blade 1 with mounting screws 4.
軸受３と、取付用ビス４の頭部の間には、平座金５、ス
プリングワッシャ６が介装される。A flat washer 5 and a spring washer 6 are interposed between the bearing 3 and the head of the mounting screw 4.
回転刃１は、外周蔀に４片の刃体７を有する。The rotary blade 1 has four pieces of blade body 7 on the outer periphery.
刃体Ｉは、渦巻型の本体８の外端に固着しである。The blade I is fixed to the outer end of the spiral body 8.
本体８の中心には、厚みのあるボス部９となっている。At the center of the main body 8 is a thick boss portion 9.
ボス部９の内面には雌螺条が切っである。取付軸２は、
長い直円柱状である７５〜一端面に、軸方向のビス取付
螺穴１５が穿孔される。A female thread is cut into the inner surface of the boss portion 9. The mounting shaft 2 is
An axial screw mounting screw hole 15 is bored in one end surface of the long right circular cylinder 75.
他方、外周には刃取付螺１６が切設されている。On the other hand, a blade attachment screw 16 is cut into the outer periphery.
刃取付螺１６より内側には鍔部１７が形成される。A flange portion 17 is formed inside the blade mounting screw 16.
軸受３は内輪１１、ボール１２、外輪１３、及び外輪ケ
ース１４より成る。The bearing 3 includes an inner ring 11, balls 12, an outer ring 13, and an outer ring case 14.
公知の軸受である。取付手順を説明する。This is a known bearing. Explain the installation procedure.
回転刃１のボス部９に、取付軸２の刃取付螺１６を螺込
み鍔部１７に当てて固定する。The blade mounting screw 16 of the mounting shaft 2 is screwed into the boss portion 9 of the rotary blade 1 and is fixed by applying it to the collar portion 17.
回転刃１と取付軸２の端面ばほぼ面一になる。The end surfaces of the rotary blade 1 and the mounting shaft 2 are almost flush.
次に、軸受３、座金５、スプリングワッシャ６を端面に
当てがい、取付用ビス４を通し螺穴１５へ螺込んでゆく
。Next, the bearing 3, washer 5, and spring washer 6 are placed on the end face, and the mounting screw 4 is passed through and screwed into the screw hole 15.
軸受３の内輪１１は両側面を押えられ、軸心はビスによ
って規制される。The inner ring 11 of the bearing 3 is pressed down on both sides, and its axis is regulated by screws.
以上の構成は公知である。The above configuration is publicly known.
本考案の特徴は、より犬、きい外径の軸受は、回転刃の
ボス部で支持したところにある。The feature of the present invention is that the bearing with a larger outer diameter is supported by the boss of the rotary blade.
第１５図によって本考案の実施例を説明する。An embodiment of the present invention will be explained with reference to FIG.
回転刃１のボス部９を取付構２に螺着する点は変わら存
い。The point that the boss portion 9 of the rotary blade 1 is screwed onto the mounting mechanism 2 remains unchanged.
回転刃１のボス部９の外側には縮径部と段部１８が形成
されている。A reduced diameter portion and a stepped portion 18 are formed on the outside of the boss portion 9 of the rotary blade 1.
、大径の軸受３は内径も広く、内周や一部分が、ボス部
に嵌めこ１れている。The large-diameter bearing 3 has a wide inner diameter, and the inner circumference or a portion thereof is fitted into the boss portion.
軸受の内周甲はもはやビス４の雫面に触れない。The inner circumferential shell of the bearing no longer touches the drop surface of the screw 4.
軸受の内輪１１は、両側を座金５及び回転刃のボス部９
９緯部１８によって挾みつけられる。The inner ring 11 of the bearing has a washer 5 and a boss part 9 of the rotary blade on both sides.
9 is clamped by the latitudinal part 18.
軸受の中心は、回転刃の中心線に等しい。The center of the bearing is equal to the centerline of the rotating blade.
軸受の内周は、ボス部９により精確な位置に規定される
。The inner periphery of the bearing is precisely defined by the boss portion 9.
ボス部で固定する事にしたので、同じビス４を使い、ビ
ス部と取付軸の端甲間距離が同一であるにも拘らず、軸
受の厚みを増す事ができる。Since we decided to fix it at the boss part, we can use the same screw 4 and increase the thickness of the bearing even though the distance between the screw part and the end plate of the mounting shaft is the same.
厚みが増大すると、軸と直角な方向へのフレを防止でき
る。Increasing the thickness can prevent deflection in the direction perpendicular to the axis.
厚みがあると、大きいベアリングボールを使える。If it's thicker, you can use larger bearing balls.
外径に比例して厚みも増加する軸受のセットは容易に入
手できる。Bearing sets whose thickness increases in proportion to the outside diameter are readily available.
規格品で売られているからである。This is because they are sold as standard products.
溝の深さＧは、回転刃１の刃体Ｉの先端間の直径Ｑと、
軸受３の直径Ｓの差の半分である。The depth G of the groove is the diameter Q between the tips of the blade body I of the rotary blade 1,
This is half the difference in diameter S of the bearing 3.
すなわち、 Ｇ−（Ｑ−８）／２ で与えられる。That is, G-(Q-8)/2 is given by
刃体の直径Ｑか、軸受の直径Ｓを様々に変えれば、切溝
の深さＧをある程度任意に設定できる。By varying the diameter Q of the blade or the diameter S of the bearing, the depth G of the kerf can be set arbitrarily to some extent.
溝の幅Ｔは、回転刃の刃体の厚みＴに等しい。The width T of the groove is equal to the thickness T of the blade body of the rotary blade.
結局、溝の深さ０１幅Ｔは、回転刃の直径Ｑ１刃体の厚
みＴ１軸受の直径Ｓの様々に異なる品を揃えておくこと
により、離散的（ｄｉｓｃｒｅｔｅ、、、）に与えられ
る。In the end, the depth 01 width T of the groove can be given discretely by preparing products with various diameters Q1 of the rotary blade, thickness T1 of the blade body, and diameter S of the bearing.
この例では、刃の直径Ｑば３２ｒｒｒｒｎで一定とし、
厚みＴの異なる回転刃を複数個取揃えることとした。In this example, the blade diameter Q is constant at 32rrrrn,
We decided to stock multiple rotary blades with different thicknesses T.
第７図〜第１０図は厚みの異なる′４つの回転刃の右側
面図である。7 to 10 are right side views of four rotary blades having different thicknesses.
ボス部の厚さは一定であるが、刃体の厚みが異なる。The thickness of the boss part is constant, but the thickness of the blade body is different.
実施例Ａ、Ｂ、Ｃ，Ｄの刃体の厚みは、 Ａ ３．０閣 Ｂ ４．５調 Ｃ５，Ｏｒｒａｎ Ｄ６．０ｒＩｒｒｒＬ である。The thickness of the blade body of Examples A, B, C, and D is A 3.0 cabinet B 4.5 key C5, Orran D6.0rIrrrL It is.
全て、大径の軸受を嵌めこむための縮径したボス部と段
部１８を具える。All have a reduced diameter boss portion and step portion 18 for fitting a large diameter bearing.
他方、外径Ｓの異なる軸受の例が第１１図に第１４図に
示される。On the other hand, examples of bearings having different outer diameters S are shown in FIGS. 11 and 14.
軸受ｘ、ｙ、ｚ、ｗの外径は、この例で Ｘ １３ｍｍφ Ｙ １６ｍ＋ｎφ Ｚ ２２ｙ＋＋ｍφ Ｗ ２６閣φ である。In this example, the outer diameters of bearings x, y, z, and w are X 13mmφ Y 16m+nφ Z 22y++mφ W 26 cabinetφ It is.
外径の小さい２つの軸受Ｘ、Ｙは内径も小さく、ビス径
と同じ４ｍｍとしである。The two bearings X and Y, which have small outer diameters, also have small inner diameters, which are 4 mm, which is the same as the screw diameter.
第６図に示す取付構造をとる。The mounting structure shown in FIG. 6 is adopted.
外径の大きい２つの軸受は内径も大きく、回転刃のボス
に嵌りこむよう１０簡φとしである。The two bearings with larger outer diameters also have larger inner diameters, each having a diameter of 10 mm to fit into the boss of the rotary blade.
第１５図に示す、本考案の実施例に対応する。This corresponds to the embodiment of the present invention shown in FIG.
溝の深さＧは、これらの組合わせで、９．５ｍｍ、８．
０ｍｍ、５゜画へ３．０ｒｒａｎにすることができる。The depth G of the groove is 9.5 mm, 8.
3.0rran to 0mm, 5° image.
効果は次のようである。The effects are as follows.
本考案の木工用サイドカッターにより、木材、合板、バ
ー゛′チクルボード、プラスチック等の材料に、精度良
く溝を堀る車力′；できる。With the woodworking side cutter of the present invention, it is possible to precisely cut grooves in materials such as wood, plywood, vertical board, and plastic.
軸受が材料表面を転動するからである。This is because the bearing rolls on the material surface.
外径の大きい軸受は、回転刃のボス部に嵌込み固定する
から、充分な厚みをとる事ができる。Since the bearing with a large outer diameter is fitted and fixed into the boss part of the rotary blade, it can be made sufficiently thick.
またボスに嵌込むから、ビスに嵌めたものより横フレが
少く、安定する。Also, because it fits into the boss, there is less lateral deflection and it is more stable than one that fits into a screw.
駆動機構としては、・・ンデートリマー、・・ンデール
ーター、ルーターマジーツ等を用いる事ができ汎用性が
広い。As a drive mechanism, it is possible to use Nday trimmer, Nday router, Router Majiz, etc., and it has a wide range of versatility.
回転刃は、軸に取付けた時、端面が面一になり、しかも
回転刃のボスに段部を設けたから、大径の軸受も小径の
軸受をも同一ビスによって取着ける事ができる。When the rotary blade is installed on the shaft, the end face is flush with the shaft, and since the boss of the rotary blade has a step, both large and small diameter bearings can be installed with the same screw.
このように有用な考案である。This is a useful idea.
第１図は本考案の木工用サイドカッターの使用状態を示
す斜視図、第２図はカッター近傍拡大断面図、第３図は
実施例に係る木工用サイドカッター正面図、第４図はサ
イドカッター右側面図、第５図は回転刃のみの背晶由、
第６図は回転刃、軸受近傍の拡大断面［ｑ、４７図〜第
５１．０図は実施例に係る異なる厚みメ申転刃の右側幅
甲、第１１図〜第１４図は異な、る直学め軸受の正面図
、□第１５図は本考案の実施例に供るサイドカッターの
回転刃、軸受近傍の拡大断面図。
：１は回転刃、２は取付構 ３は軸受、４は取付用
ヒス、５は座金、６はスプリングワッシャ、Ｉは刃体、
８は本体、９はボス部、１１は内輪、１２はボール、１
３は外輪、１４は外輪ケース、１５はビス取付螺穴、１
６は刃取付螺１．１７は鍔部、１８は段部。
：； ・Fig. 1 is a perspective view showing the state of use of the woodworking side cutter of the present invention, Fig. 2 is an enlarged sectional view of the vicinity of the cutter, Fig. 3 is a front view of the woodworking side cutter according to the embodiment, and Fig. 4 is the side cutter. The right side view, Figure 5, shows the back crystal of the rotating blade only.
Figure 6 is an enlarged cross-section of the rotary blade and the vicinity of the bearing [q, Figures 47 to 51. 15 is an enlarged sectional view of the rotary blade of the side cutter and the vicinity of the bearing according to the embodiment of the present invention. : 1 is the rotary blade, 2 is the mounting structure, 3 is the bearing, 4 is the mounting hiss, 5 is the washer, 6 is the spring washer, I is the blade,
8 is the main body, 9 is the boss part, 11 is the inner ring, 12 is the ball, 1
3 is the outer ring, 14 is the outer ring case, 15 is the screw mounting hole, 1
6 is the blade mounting screw 1, 17 is the flange, and 18 is the step. :; ・
Claims (1)
、内輪と外輪とより成り外輪力、：回転刃１より小径で
内樋カ向転刃１より外側に於て取付軸２及び回転刃１に
対して固定される軸受３′、ｆｆｉ、軸受３の内輪を固
定し取付！ｌｌｌ１２端面のビ哀取付螺穴１５□に螺着
された取付用ビ、Ｑ、４と上り成る木工用サイドカッタ
ーに於て、回転刃１のボス部９に段部１８′を鰻す軸受
３の内輪１１をボス部９に嵌めこみ段部１８と大径の座
金５で挾みこんで取付用ビス４で固定した事を特徴とす
る木工用サイドカッター。 ２ 回転刃１と取付軸２の外端面が面一になっており、
小径の軸受３の内輪の側面を回転刃と取付軸の外端面と
座金５の間に挾み取付廁ピ哀４で固定される事を特徴と
する木工用サイドカッター。 □ ゛[Scope of Claim for Utility Model Registration] 1. Outer ring force consisting of a rotary blade 1, a mounting shaft 2 that fixes the rotary blade 1 at one end, an inner ring and an outer ring: a rotary blade 1 with a smaller diameter than the rotary blade 1 and directed toward the inner gutter. Fix the bearings 3' and ffi, which are fixed to the mounting shaft 2 and the rotary blade 1 on the outside, and the inner ring of the bearing 3 and install! In a side cutter for woodworking, which consists of a mounting screw screwed into the mounting screw hole 15□ on the end face of 12, Q, and 4, the bearing 3 has a stepped portion 18' on the boss portion 9 of the rotary blade 1. This side cutter for woodworking is characterized in that an inner ring 11 is fitted into a boss part 9, sandwiched between a stepped part 18 and a large-diameter washer 5, and fixed with a mounting screw 4. 2 The outer end surfaces of the rotary blade 1 and the mounting shaft 2 are flush with each other,
This side cutter for woodworking is characterized in that the side surface of the inner ring of a small-diameter bearing 3 is sandwiched between a rotary blade, the outer end surface of a mounting shaft, and a washer 5, and fixed with a mounting pin 4. □ ゛
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8506179U JPS584641Y2 (en) | 1979-06-20 | 1979-06-20 | Side cutter for woodworking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8506179U JPS584641Y2 (en) | 1979-06-20 | 1979-06-20 | Side cutter for woodworking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS563608U JPS563608U (en) | 1981-01-13 |
| JPS584641Y2 true JPS584641Y2 (en) | 1983-01-26 |
Family
ID=29318262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8506179U Expired JPS584641Y2 (en) | 1979-06-20 | 1979-06-20 | Side cutter for woodworking |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS584641Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6127683Y2 (en) * | 1981-06-09 | 1986-08-18 |
-
1979
- 1979-06-20 JP JP8506179U patent/JPS584641Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS563608U (en) | 1981-01-13 |
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