JPH08258511A - Traveling body with lug - Google Patents
Traveling body with lugInfo
- Publication number
- JPH08258511A JPH08258511A JP7066461A JP6646195A JPH08258511A JP H08258511 A JPH08258511 A JP H08258511A JP 7066461 A JP7066461 A JP 7066461A JP 6646195 A JP6646195 A JP 6646195A JP H08258511 A JPH08258511 A JP H08258511A
- Authority
- JP
- Japan
- Prior art keywords
- lugs
- traveling body
- mud
- tire
- rubber layer
- 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.)
- Pending
Links
- 229920001971 elastomer Polymers 0.000 claims abstract description 22
- 230000003405 preventing effect Effects 0.000 claims abstract description 14
- 238000005187 foaming Methods 0.000 claims abstract description 4
- 239000006260 foam Substances 0.000 claims description 6
- 229920001821 foam rubber Polymers 0.000 description 6
- 230000002265 prevention Effects 0.000 description 6
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004073 vulcanization Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
Landscapes
- Tires In General (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、周方向に間隔をおいて
トレッド上に配置された複数のラグを備えたラグ付き走
行体に関するものであって、特に湿田、軟弱地や泥濘地
などの圃場を走行する農業車両や土木建設車両などに装
着される農業用タイヤおよびクローラーなどのラグ付き
走行体に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling body with lugs provided with a plurality of lugs arranged on a tread at intervals in the circumferential direction, and particularly to wetlands, soft land and mud land. The present invention relates to a traveling body with lugs such as agricultural tires and crawlers mounted on agricultural vehicles or civil engineering construction vehicles that travel in a field.
【０００２】[0002]
【従来の技術】湿田、軟弱地や泥濘地などでの作業を終
えたトラクターや田植え機などの農耕車両や土木建設車
両などが一般舗装路を通過するときに、タイヤまたはク
ローラーなどのラグ付き走行体に付着した泥土を路上に
撒き散らしたり、また、病原に汚染された泥土を付着し
て別の健全な農耕地で作業して、農作物に病気が蔓延す
るなどの弊害を防止するため、タイヤまたはクローラー
などのラグ付き走行体への泥土付着防止が強く要請され
ている。2. Description of the Related Art When an agricultural vehicle such as a tractor or rice transplanter or a civil engineering construction vehicle that has completed work on a wetland, a soft land or a mud, etc. passes through a general paved road, it runs with lugs such as tires or crawlers. In order to prevent the harmful effects such as the spread of disease on crops by spreading mud adhered to the body on the road or working on another healthy agricultural land by adhering mud contaminated with pathogens, tires There is also a strong demand for prevention of mud adhesion to running bodies with lugs such as crawlers.
【０００３】[0003]
【発明が解決しようとする課題】従来、実開昭６０−１
１８５０２に開示されているように、ラグの間に多数の
マッドフィンを設けて泥土の付着を防止することが提案
されているが、湿潤土壌では泥土付着防止効果は発揮さ
れない。また、特開平５−２０８４５４に開示されてい
るように、ラグを含むトレッド全面にフッ素樹脂または
シリコーン樹脂などの高撥水性ポリマーを被覆して泥土
の付着を防止することが提案されているが、原料コスト
が高くなるという欠点があった。また、特開平６−３２
９０００に開示されているように、自己吸水性・排水性
および弾性復元性を有する剥離促進体をラグの高さより
低い位置に設けることが提案されているが、ラグの側面
やタイヤの側面などに泥土が付着する、タイヤの生産性
に劣り製造コストが高くなるという欠点があった。[Problems to be Solved by the Invention]
As disclosed in 18502, it has been proposed to provide a large number of mud fins between lugs to prevent mud adhesion, but mud adhesion prevention effect is not exhibited in wet soil. Further, as disclosed in JP-A-5-208454, it has been proposed to coat the entire surface of a tread including lugs with a highly water-repellent polymer such as a fluororesin or a silicone resin to prevent the adhesion of mud. There is a drawback that the raw material cost becomes high. In addition, JP-A-6-32
As disclosed in 9000, it has been proposed to provide a peeling accelerator having self-water-absorption / drainage property and elastic restoring property at a position lower than the height of the lug, but on the side surface of the lug or the side surface of the tire. There were drawbacks such as adhesion of muddy soil, poor productivity of tires and high manufacturing costs.
【０００４】本発明の目的は、湿田、軟弱地や泥濘地な
どでの作業時に泥土が付着しにくいタイヤおよびクロー
ラーなどのラグ付き走行体であって、しかも生産性に優
れかつ安価なラグ付き走行体を提供することである。An object of the present invention is a traveling body with lugs such as tires and crawlers, which is unlikely to be soiled with mud when working in wetlands, soft ground or mud, and which is excellent in productivity and inexpensive in traveling. To provide the body.
【０００５】[0005]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明による農業用タイヤおよびクローラーなど
のラグ付き走行体は、周方向に間隔をおいてトレッド上
に配置された複数のラグを備えたラグ付き走行体におい
て、該ラグを含むトレッドの表面が（１）厚さ２乃至１
０ｍｍ、（２）平均発泡径１０乃至１０００μｍ、
（３）ＡＳＫＡＲ−Ｃ硬度２乃至７０、（４）密度０．
０２乃至０．５の連続気泡の発泡ゴム層よりなる泥付着
防止層によって全面的にによって被覆されていることを
特徴とするラグ付き走行体である。In order to achieve the above object, a traveling body with lugs such as an agricultural tire and a crawler according to the present invention has a plurality of lugs arranged on a tread at intervals in the circumferential direction. In a traveling body with a lug, the surface of the tread including the lug has (1) a thickness of 2 to 1
0 mm, (2) average foam diameter 10 to 1000 μm,
(3) ASKAR-C hardness 2 to 70, (4) density 0.
A running body with a lug, which is entirely covered with a mud adhesion preventing layer made of a foamed rubber layer having open cells of 02 to 0.5.
【０００６】上記の目的を達成するため、本発明による
農業用タイヤおよびクローラーなどのラグ付き走行体で
は、該発泡ゴム層の厚さが３乃至６ｍｍであることが好
ましく、また、該発泡ゴム層の平均発泡径が１００乃至
３００μｍであることことが好ましい。In order to achieve the above object, in the traveling body with lugs such as agricultural tires and crawlers according to the present invention, it is preferable that the foamed rubber layer has a thickness of 3 to 6 mm. It is preferable that the average foam diameter of is 100 to 300 μm.
【０００７】上記の目的を達成するため、本発明による
農業用タイヤおよびクローラーなどのラグ付き走行体で
は、該発泡ゴム層のＡＳＫＡＲ−Ｃ硬度が３乃至５０で
あることことが好ましく、さらに、該発泡ゴム層のＡＳ
ＫＡＲ−Ｃ硬度が５乃至３０であることが好ましい。In order to achieve the above object, in the traveling body with lugs such as the agricultural tire and the crawler according to the present invention, it is preferable that the foam rubber layer has an ASKAR-C hardness of 3 to 50, and further, AS of foam rubber layer
The KAR-C hardness is preferably 5 to 30.
【０００８】上記の目的を達成するため、本発明による
農業用タイヤおよびクローラーなどのラグ付き走行体で
は、該発泡ゴム層の密度が０．０５乃至０．２であるこ
とが好ましい。In order to achieve the above object, in the traveling body with lugs such as the agricultural tire and the crawler according to the present invention, the density of the foamed rubber layer is preferably 0.05 to 0.2.
【０００９】[0009]
【作用】本発明による農業用タイヤおよびクローラーな
どのラグ付き走行体では、周方向に間隔をおいてトレッ
ド上に配置された複数のラグを備えたラグ付き走行体に
おいて、該ラグを含むトレッドの表面が（１）厚さ２乃
至１０ｍｍ、（２）平均発泡径１０乃至１０００μｍ、
（３）ＡＳＫＡＲ−Ｃ硬度２乃至７０、（４）密度０．
０２乃至０．５の連続気泡の発泡ゴム層よりなる泥付着
防止層によって全面的に被覆され、つまり、ラグの背面
や側面およびショルダー域を含むトレッドの表面が全面
的に上記泥付着防止層によって被覆されているので、泥
土の剥離が効果的に促進されるとともに、加硫後のタイ
ヤのトレッド全表面に一度に吹き付け処理したり、１枚
の上記発泡ゴム層よりなるシートを加硫前のタイヤのト
レッド表面に張り付けるまたは２層構造の押し出しトレ
ッドを使用することが可能であり、タイヤおよびクロー
ラーなどのラグ付き走行体の生産性に優れているので、
製造コストが安価になる。In the traveling body with lugs such as the agricultural tire and the crawler according to the present invention, in the traveling body with lugs provided with a plurality of lugs arranged on the tread at intervals in the circumferential direction, the tread including the lugs is provided. The surface has (1) a thickness of 2 to 10 mm, (2) an average foaming diameter of 10 to 1000 μm,
(3) ASKAR-C hardness 2 to 70, (4) density 0.
The whole surface is covered with a mud adhesion preventing layer composed of a foamed rubber layer having an open cell size of 02 to 0.5, that is, the surface of the tread including the back and side surfaces of the lug and the shoulder area is entirely covered with the mud adhesion preventing layer. Since it is covered, the peeling of mud is effectively promoted, and the entire tread surface of the tire after vulcanization is sprayed at once, or a sheet made of the above-mentioned foamed rubber layer is used before vulcanization. It is possible to use an extruded tread with a two-layer structure or to stick it to the tread surface of the tire, and because it is excellent in productivity of running bodies with lugs such as tires and crawlers,
Manufacturing costs are low.
【００１０】本発明による農耕用または土木作業用タイ
ヤおよびクローラーなどのラグ付き走行体では、上述の
ように、厚さ２乃至１０ｍｍの連続気泡の発泡ゴム層よ
りなる泥付着防止層が採用されているが、これは厚さが
２ｍｍより小さくなると泥付着防止層の変形量が少なく
なって、吸水・排水効果が不十分となり泥が付着しやす
くなり、一方、厚さが１０ｍｍより大きくなると変形時
に肉厚になり、泥を掻くラグ面積が減少するので駆動力
が低下することによる。In the traveling body with lugs such as tires for agricultural or civil engineering work and crawlers according to the present invention, as described above, the mud adhesion preventing layer composed of the foamed rubber layer of the open cells having the thickness of 2 to 10 mm is adopted. However, if the thickness is less than 2 mm, the amount of deformation of the mud adhesion prevention layer will be small, and the water absorption / drainage effect will be insufficient and mud will easily adhere. On the other hand, if the thickness is more than 10 mm, it will be deformed. This is because the driving force is reduced because the wall thickness becomes thicker and the lag area for scratching mud decreases.
【００１１】上記の目的を達成するため、本発明による
農耕用または土木作業用タイヤおよびクローラーなどの
ラグ付き走行体では、上述のように、平均発泡径１０乃
至１０００μｍの連続気泡の発泡ゴム層よりなる泥付着
防止層が採用されているが、これは、平均発泡径が１０
μｍより小さくなると吸水・排水効果が不十分となり泥
が付着しやすくなり、一方、平均発泡径が１０００μｍ
を超えると発泡ゴムの隙間に泥が詰まり、泥付着防止効
果が低下することによる。In order to achieve the above-mentioned object, in the traveling body with lugs such as agricultural or civil engineering work tires and crawlers according to the present invention, as described above, a foamed rubber layer of open cells having an average foaming diameter of 10 to 1000 μm is used. A mud adhesion prevention layer is used, which has an average foam diameter of 10
If it is less than μm, the water absorption / drainage effect is insufficient and mud tends to adhere, while the average foam diameter is 1000 μm.
If it exceeds, mud will be clogged in the gaps of the foamed rubber and the mud adhesion preventing effect will be reduced.
【００１２】上記の目的を達成するため、本発明による
農耕用または土木作業用タイヤおよびクローラーなどの
ラグ付き走行体では、上述のように、ＡＳＫＡＲ−Ｃ硬
度が２乃至７０の連続気泡の発泡ゴム層よりなる泥付着
防止層が採用されているが、これは、ＡＳＫＡＲ−Ｃ硬
度が２より小さくなると泥の重量で発泡ゴムが潰れたま
まになり泥が付着しやすくなること、一方、ＡＳＫＡＲ
−Ｃ硬度が７０を超えると、発泡ゴムが泥の剥がれに必
要な弾性変形を生じなくなって、泥付着防止効果が低下
することによる。In order to achieve the above object, the tire for agricultural or civil engineering work and the traveling body with lugs such as crawlers according to the present invention have, as described above, a foamed rubber having an open cell of ASKAR-C hardness of 2 to 70. A mud adhesion prevention layer consisting of layers is adopted. This is because when the ASKAR-C hardness is less than 2, the foam rubber remains crushed by the weight of the mud and the mud easily adheres.
This is because when the -C hardness exceeds 70, the foamed rubber does not undergo the elastic deformation necessary for peeling off the mud, and the mud adhesion preventing effect decreases.
【００１３】本発明による農耕用または土木作業用タイ
ヤおよびクローラーなどのラグ付き走行体では、上述の
ように、密度が０．０２乃至０．５の連続気泡の発泡ゴ
ム層よりなる泥付着防止層が採用されているが、これ
は、密度が０．０２より小さくなると泥の重量で発泡ゴ
ムが潰れたままになり泥が付着しやすくなり、一方、密
度が０．５を超えると、発泡ゴムが泥の剥がれに必要な
弾性変形を生じなくなって、泥付着防止効果が低下する
ことによる。In the traveling body with lugs such as the tire for agricultural or civil engineering work and the crawler according to the present invention, as described above, the mud adhesion preventing layer comprising the foamed rubber layer of the open cells having the density of 0.02 to 0.5. However, when the density is less than 0.02, the foam rubber remains crushed by the weight of the mud and the mud tends to adhere, while when the density exceeds 0.5, the foam rubber is This is because the elastic deformation necessary for peeling off the mud does not occur and the mud adhesion preventing effect decreases.
【００１４】[0014]
【実施例】本発明に従う実施例の農業用タイヤおよび従
来例のタイヤについて図面を用いて説明すると、いずれ
も、タイヤ・サイズは１１．２−２４の農耕作業車両
（トラクター）用バイアス・タイヤである。DESCRIPTION OF THE PREFERRED EMBODIMENTS An agricultural tire of an embodiment according to the present invention and a tire of a conventional example will be described with reference to the drawings. In both cases, a bias tire for an agricultural work vehicle (tractor) having a tire size of 11.2-24 is used. is there.
【００１５】図１は本発明に従う実施例の農業用タイヤ
（１）のトレッド（２）の部分平面図であり、図２はＡ
−Ａ断面図である。実施例のタイヤ（１）は、周方向に
間隔をおいてトレッド（２）上に配置された複数のラグ
（３）を備え、このラグ（３）の背面や側面およびサイ
ドウオール部（４）やショルダー域（５）を含むトレッ
ド（２）の表面が厚さ５ｍｍ、平均発泡径２００μｍ、
ＡＳＫＡＲ−Ｃ硬度１５、密度０．２５のウレタン系ス
ポンジ・ゴム層よりなる泥付着防止層（６）によって全
面的に被覆されている。図３は本発明に従う実施例の農
業用タイヤ（１）の加硫前の子午線断面図であり、トレ
ッド（２）上に上記のウレタン系スポンジ・ゴム層より
なる泥付着防止層（６）が押し出し機によって一体的に
積層されている。この実施例では、ウレタン系スポンジ
・ゴム層よりなる泥付着防止層（６）が用いられている
が、これに限らず連続気泡の軟質ポリウレタン・フォー
ムやシリコン系スポンジ・ゴムを用いることができる。FIG. 1 is a partial plan view of a tread (2) of an agricultural tire (1) according to an embodiment of the present invention, and FIG.
It is -A sectional drawing. The tire (1) of the embodiment is provided with a plurality of lugs (3) arranged on the tread (2) at intervals in the circumferential direction, and the back and side surfaces of the lug (3) and the side wall part (4). And the surface of the tread (2) including the shoulder region (5) has a thickness of 5 mm, an average foam diameter of 200 μm,
The entire surface is covered with a mud adhesion preventing layer (6) made of a urethane sponge / rubber layer having an ASKAR-C hardness of 15 and a density of 0.25. FIG. 3 is a meridional cross-sectional view of an agricultural tire (1) according to an embodiment of the present invention before vulcanization. The mud adhesion preventing layer (6) made of the urethane sponge / rubber layer is formed on the tread (2). It is integrally laminated by an extruder. In this embodiment, the mud adhesion preventing layer (6) made of urethane sponge / rubber layer is used, but not limited to this, soft polyurethane foam having open cells or silicone sponge rubber can be used.
【００１６】従来例のタイヤは、トレッド（２）の表面
が上記のウレタン系発泡ゴム層よりなる泥付着防止層
（６）によって被覆されていないこと以外は、実施例の
タイヤと同じである。The tire of the conventional example is the same as the tire of the example except that the surface of the tread (2) is not covered with the mud adhesion preventing layer (6) made of the urethane foam rubber layer.
【００１７】上記実施例のタイヤと従来例のタイヤにつ
いて、比較試験を行った。試験条件は、供試タイヤをＷ
９×２４のリムに組んで、１．２ｋｇ／ｃｍ2 の内圧を
充填し、四輪駆動２５ｐｓトラクターの後輪に装着し、
湿田一反分のロータリー荒おこし作業後タイヤ表面に付
着した泥土の量を重量測定し、次に畦道を３０ｍ走行し
た後に舗装道路を走行したときのタイヤから道路に落と
された泥土の量を重量測定した。試験結果を、従来例の
タイヤの泥土の付着量と舗装道路への落下量をそれぞれ
１００として、指数表示で表１に示す。数字が小さいほ
ど、泥土の付着量と落下量が優れていることを示す。A comparative test was carried out on the tire of the above-mentioned example and the tire of the conventional example. The test conditions are:
Assembled into a 9 x 24 rim, filled with an internal pressure of 1.2 kg / cm 2 , and mounted on the rear wheel of a four wheel drive 25 ps tractor,
Weigh the amount of mud adhered to the tire surface after rotary roughing work for one roll of wetland, and then weigh the amount of mud dropped from the tires on the paved road after traveling 30m on the ridge. It was measured. The test results are shown in Table 1 in index notation, where the amount of mud adhered to the tire of the conventional example and the amount dropped onto the pavement are 100 respectively. The smaller the number, the better the amount of mud adhered and the amount dropped.
【００１８】[0018]
【表１】 [Table 1]
【００１９】表１の結果から、実施例のタイヤは従来例
のタイヤに比べ、泥土の付着量も落下量も少ない、優れ
たタイヤであることがわかる。From the results shown in Table 1, it can be seen that the tires of the examples are excellent tires in which the amount of adhered mud and the amount of fall are smaller than those of the tires of the conventional example.
【００２０】[0020]
【発明の効果】本発明によって、湿田、軟弱地や泥濘地
などでの作業時に泥土が付着しにくいタイヤおよびクロ
ーラーなどのラグ付き走行体であって、しかも生産性に
優れかつ安価なラグ付き走行体を提供することが可能と
なった。EFFECTS OF THE INVENTION According to the present invention, it is a traveling body with lugs such as tires and crawlers which are unlikely to be soiled with mud when working in wetlands, soft ground or mud, and which has excellent productivity and is inexpensive. It is now possible to provide the body.
【図１】本発明によるタイヤのトレッドの部分平面図で
ある。FIG. 1 is a partial plan view of a tread of a tire according to the present invention.
【図２】本発明によるタイヤのＡ−Ａ断面図である。FIG. 2 is a sectional view taken along the line AA of the tire according to the present invention.
【図３】本発明によるタイヤの加硫前の子午線断面図で
ある。FIG. 3 is a meridional sectional view of a tire according to the present invention before vulcanization.
１ タイヤ ２ トレッド ３ ラグ ４ サイドウオール部 ５ ショルダー域 ６ 泥付着防止層 1 Tire 2 Tread 3 Lug 4 Sidewalls 5 Shoulder area 6 Mud adhesion prevention layer
Claims (6)
された複数のラグを備えたラグ付き走行体において、該
ラグを含むトレッドの表面が（１）厚さ２乃至１０ｍ
ｍ、（２）平均発泡径１０乃至１０００μｍ、（３）Ａ
ＳＫＡＲ−Ｃ硬度２乃至７０、（４）密度０．０２乃至
０．５の連続気泡の発泡ゴム層よりなる泥付着防止層に
よって全面的に被覆されていることを特徴とするラグ付
き走行体。1. In a traveling body with lugs provided with a plurality of lugs arranged on the tread at intervals in the circumferential direction, the surface of the tread including the lugs has (1) a thickness of 2 to 10 m.
m, (2) average foaming diameter 10 to 1000 μm, (3) A
A running body with a lug, which is entirely covered with a mud adhesion preventing layer made of a foamed rubber layer having an open cell having a SKAR-C hardness of 2 to 70 and (4) a density of 0.02 to 0.5.
ることを特徴とする請求項１記載のラグ付き走行体。2. The traveling body with lugs according to claim 1, wherein the foamed rubber layer has a thickness of 3 to 6 mm.
３００μｍであることを特徴とする請求項１乃至２記載
のラグ付き走行体。3. The running body with a lug according to claim 1, wherein the foamed rubber layer has an average foam diameter of 100 to 300 μm.
乃至５０であることを特徴とする請求項１乃至３記載の
ラグ付き走行体。4. The ASKAR-C hardness of the foamed rubber layer is 3
It is 50 thru | or 50, The traveling body with a lug of Claim 1 thru | or 3 characterized by the above-mentioned.
乃至３０であることを特徴とする請求項１乃至３記載の
ラグ付き走行体。5. The ASKAR-C hardness of the foamed rubber layer is 5.
It is 30 thru | or 30, The traveling body with a lug of Claim 1 thru | or 3 characterized by the above-mentioned.
２であることを特徴とする請求項１乃至５記載のラグ付
き走行体。6. The foamed rubber layer has a density of 0.05 to 0.
The traveling body with a lug according to claim 1, wherein the traveling body is 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7066461A JPH08258511A (en) | 1995-03-24 | 1995-03-24 | Traveling body with lug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7066461A JPH08258511A (en) | 1995-03-24 | 1995-03-24 | Traveling body with lug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08258511A true JPH08258511A (en) | 1996-10-08 |
Family
ID=13316444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7066461A Pending JPH08258511A (en) | 1995-03-24 | 1995-03-24 | Traveling body with lug |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08258511A (en) |
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