JP2009097262A - Ground leveling implement - Google Patents

Ground leveling implement Download PDF

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JP2009097262A
JP2009097262A JP2007270859A JP2007270859A JP2009097262A JP 2009097262 A JP2009097262 A JP 2009097262A JP 2007270859 A JP2007270859 A JP 2007270859A JP 2007270859 A JP2007270859 A JP 2007270859A JP 2009097262 A JP2009097262 A JP 2009097262A
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ground
present
attached
net
leveling
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JP4992658B2 (en
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Shichiro Handa
七郎 半田
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a ground leveling implement which includes both functions of removing uneven places, weeds, and pebbles and trash in the land of a ground, a multipurpose square, and a baseball (softball) field, and of leveling the wet ground, such as after the rain, and pulled by a vehicle or the like to maintain a soft and flat ground. <P>SOLUTION: In the ground leveling implement, angles are attached before and after a net, nails are attached to the rear angle in a line, shackles are attached to the front angle, and a vehicle pulls it using chains to level the ground. A ground leveling implement composed of a net having some weight, to which nails are not attached, and another ground leveling implement which changes the size and weight of the net are connected through chains or the like to be pulled at the same time. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、グランド、野球(ソフトボール)場、多目的広場などの整備用具に関するものである。   The present invention relates to maintenance tools such as a ground, a baseball (softball) field, and a multipurpose open space.

従来、野球場、グランド等の地面を整備する方法としては、木製、金属製のグランドレーキ(砂ならし)などを引っ張って均す方法や、その整備具で地面を前後動させて削って均す方法が取られている。これは荒れた地面を均し、盛り上がった土を窪んだ場所に移し平坦にする作業であるが、地面は乾燥した硬い状態や雨の後の軟らかい状態など様々であり、また面積も広く丁寧にしなければならないので、以外と時間を要する作業である。大型のブラシを取り付けた整備用自動車のある野球(ソフトボール)場やグランドは一部に限られているので、殆どのグランドでは人力による整備作業が行なわれている。競技はこれらの整備作業後に行なわれ、競技の途中には荒れた場所を短時間で整備しなければならない場合もある。出願人は先に特願2003−293470号では、グランドレーキ(砂ならし)の前後に均し板を設けて3枚の均し板で地面を削り均す方法と特願2003−402481号では長方形の天板の下面に人工芝を取り付けたグランド整備具を提案している。2006−109867号では長尺体下の下面の前面に細長い長方形の人工芝を取り付けたグランド整備具を提案している。また特願2004−185798号では椅子を利用したグランド補助整備具を提案している。特開2003−105714号では枠体の下面に3列に渡って突起棒を取り付けたグランド整地具を提案している。実開昭60−18113号では削り刃、掻き爪、ブラシを使用し舵取りをしながらグランドを均す整地具を提案している。   Conventionally, methods for maintaining the ground such as baseball stadiums and grounds include leveling by pulling a wooden or metal ground rake (sand leveling), etc. The method is taken. This is a work to level the rough ground and move the raised soil to a recessed place and flatten it, but the ground is variously dry and soft after rain, and the area is also wide and polite. Since it must be, it is a time-consuming work. There are limited baseball (softball) fields and grounds with maintenance cars fitted with large brushes, so most grounds are manually maintained. The competition takes place after these maintenance work, and it may be necessary to set up a rough place in a short time during the competition. In Japanese Patent Application No. 2003-293470, the applicant previously provided a leveling plate before and after the ground rake (sand leveling) and ground the ground with three leveling plates. A ground maintenance tool with an artificial turf attached to the bottom of a rectangular top board is proposed. No. 2006-109867 proposes a ground maintenance tool in which a long and slender rectangular artificial turf is attached to the front surface of the lower surface below the long body. Japanese Patent Application No. 2004-185798 proposes a ground auxiliary maintenance tool using a chair. Japanese Patent Application Laid-Open No. 2003-105714 proposes a ground leveling tool in which protruding bars are attached to the lower surface of the frame body in three rows. Japanese Utility Model Publication No. 60-18113 proposes a leveling tool for leveling the ground while steering using a cutting blade, scratching claw, and brush.

2003−293470号特願2003−402481号特願2004−185798号特願2006−109867号特願2001−306818号実願昭58−107746号Japanese Patent Application No. 2003-293470 Japanese Patent Application No. 2003-402481 Japanese Patent Application No. 2004-185798 Japanese Patent Application No. 2006-109867 Japanese Patent Application No. 2001-306818 Japanese Patent Application No. 58-107746

グランド整備に使用するコートブラシは細長い角材の下面に毛を植え込んだブラシであり、地面には強くあたらず撫でるようにして均すだけのものでもあり、グランドの表面しか整備をすることが出来ない。また、グランドレーキも木・鉄・アルミなどでつくられたアングルや長方形の角材を引っ張ることによって地面上を削って均すものである。グランドの良い状態を維持するには日常的に地面の整備作業をする必要がある。グランドの広範囲にわたる地面の土の中には小石、ゴミなどが自然に混じり込んでいる。比較的小さい小石、ゴミは取り除かれることはなく放置されているのが問題である。特願2003−293470号は人力による整備作業をする用具であり、部分的な盛り上がりや窪みを平坦に均すことを目的としている。特願2003−402481号はバイク、自動車を利用した整備具であり、地面を均して整備の仕上がりも広範囲に平均して行なうことが出来るが、地面を均すものであり、乾いた地面の使用が対象と思われる。また特願2004−185798号はグランド整備具をロープの先端に取り付け円形の地面を整備するための補助的整備具を提案している。人が回転椅子の座席に座って作業する簡単な整備具である。ただ表面を均すだけのものである。特願2006−109867号ではグランドを削りながら平坦な地面に整備するものである。地面の表面を削ることだけで地面の掘り起こしがなく地面の中の雑草、小石等の取り除きが難しく思える。特願2001−306818号は枠体の下面に3列に渡って突起鋼棒を溶接し全体を引きずることによりグランドを平坦な地面にする為の整地具である。しかし全体の重量(200kg)が大きくまた先端の突起物が短くなれば新しいものと取り替える場合、溶接し直す作業を取り入れているこれは作業が難しく感じる。実願昭58−107746号は削り刃、掻き爪、ブラシを取り付けた本体を車両に連結し舵取りをしながらグランドを平坦な地面にするための整地具である。だが作業が一人でなく複数必要と考えられる。また地面の状態によっては操作杆での舵取りも難しく作業が困難である。
どの整地具についても乾いた地面のみ均すことができ、湿った地面については均すことが難しく感じる。
The coat brush used for ground maintenance is a brush in which hair is planted on the lower surface of a long and narrow square bar. It is only brushed and smoothed without hitting the ground, and only the surface of the ground can be maintained. . The ground rake is also made by smoothing the ground by pulling an angle or rectangular square made of wood, iron or aluminum. Maintenance of the ground is necessary on a daily basis to maintain good ground conditions. Pebbles, garbage, etc. are naturally mixed in the ground on the ground. The problem is that relatively small pebbles and garbage are not removed and left unattended. Japanese Patent Application No. 2003-293470 is a tool for performing maintenance work by human power, and aims at leveling partial bulges and depressions. Japanese Patent Application No. 2003-402481 is a maintenance tool using a motorbike and a car, and it can level the ground and average the maintenance finish over a wide range. Use seems to be the target. Japanese Patent Application No. 2004-185798 proposes an auxiliary maintenance tool for attaching a ground maintenance tool to the tip of a rope to maintain a circular ground. It is a simple maintenance tool that allows a person to work while sitting on the seat of a swivel chair. It just leveles the surface. In Japanese Patent Application No. 2006-109867, a ground is maintained while cutting the ground. It seems difficult to remove weeds, pebbles, etc. in the ground without digging up the ground just by shaving the surface of the ground. Japanese Patent Application No. 2001-306818 is a leveling tool for making a ground a flat ground by welding a protruding steel rod over three rows on the lower surface of a frame and dragging the whole. However, when the whole weight (200 kg) is large and the protrusion at the tip is shortened, when replacing with a new one, it takes a work of re-welding, which makes the work difficult. No. 58-107746 is a leveling tool for connecting a main body with a cutting blade, a scratching claw, and a brush to a vehicle to make the ground a flat ground while steering. However, it is considered that more than one work is necessary. In addition, depending on the state of the ground, it is difficult to steer with the operating rod, and the work is difficult.
For all leveling tools, only dry ground can be leveled and wet ground is difficult to level.

本発明は上述の点に鑑みて、グランド、野球(ソフトボール)、多目的広場の地面の雑草、凸凹、小石、ゴミを取り除く機能と、雨あがりのような湿った地面についても使用できる機能と均す機能を合わせ備えた整備具で、軟らかい平坦な地面に整備することを課題としたものである。   In view of the above points, the present invention has a function to remove ground weeds, bumps, pebbles, and dust on the ground, baseball (softball), multipurpose plaza, and functions that can be used on wet ground such as rain. It is a maintenance tool that has a function to make it easy to maintain on a soft, flat ground.

そこで本発明の請求項1記載のグランド整地具は(本発明1と言う)鋼鉄の網1に前後にアングル2を固定し、後部に鋼鉄のクギ3を取り付け、その後方を鋼鉄の網1枚もしくは2枚を引っ張る方法と単独で引っ張る方法を特徴とする。   Therefore, the ground leveling tool according to claim 1 of the present invention (referred to as the present invention 1) has an angle 2 fixed on the front and back of a steel net 1, a steel nail 3 attached to the rear, and a steel net behind it. Or the method of pulling two sheets and the method of pulling alone are characterized.

本発明の図1で鋼鉄の網1を使用しているが、重量がある物であれば網にこだわらない。   Although the steel net 1 is used in FIG. 1 of the present invention, the net is not particular if it is heavy.

図1に示すように本発明1にクサリ(またはロープ)を取り付けて自動車で引っ張った場合、後方に取り付けた鋼鉄クギ3によって地面が掘り起こされ、雑草、小石、その他凸凹がとれ、地面が軟らかくなり平坦に均すことが出来る。(以下一例として数字をあげると 大きさ 1840×710 重さは40kg前後としている。)   As shown in Fig. 1, when the cord (or rope) is attached to the present invention 1 and pulled by an automobile, the ground is dug up by the steel keg 3 attached at the rear, and weeds, pebbles and other irregularities are removed, and the ground becomes soft. Can be leveled flat. (Hereafter, as an example, the size is 1840 x 710 and the weight is around 40 kg.)

本発明1の考案について
自動車で引っ張った場合、一定の速度を保つことが非常に難しく、これを解消するため重さとクサリの長さにより、バランスを保つ工夫をしている。
・ 全体の大きさと重さが大きいと、一人での移動が難しくなる。
・ 重さが軽すぎると後部クギ3がはねて、作業にならずバランスが保てない。
・ 車の大きさにより、クサリ11(又はロープ)の長さで調節する。
About Invention of Invention 1 When pulled by an automobile, it is very difficult to maintain a constant speed, and in order to solve this problem, a device for maintaining a balance by means of weight and length of a chain is devised.
・ If the overall size and weight are large, it will be difficult to move alone.
・ If the weight is too light, the rear nail 3 will spring, and it will not work and will not be balanced.
・ Adjust the length of the cord 11 (or rope) according to the size of the car.

本発明の請求項2記載のグランド整地具(本発明2と言う)は上記本発明1に接続して、引っ張ったり単独で引っ張ることで凸凹がなくなり、雑草、小石、ゴミ等が網にかかり取り除く事ができ、同時に平坦に均すことを特徴とする。(以下一例として数字をあげると 大きさ 1840×710 重さは20kg前後としている。)   The ground leveling tool according to claim 2 of the present invention (referred to as the present invention 2) is connected to the present invention 1, and when it is pulled or pulled alone, unevenness is eliminated, and weeds, pebbles, dust, etc. are removed from the net. It is characterized by being able to do things and leveling at the same time. (Hereafter, as an example, the size is 1840 x 710 and the weight is around 20 kg.)

図3には本発明の請求項3記載のグランド整地具の網目を小さくした一例を示す。上記本発明2に接続して、引っ張ったりまたは単独で引っ張ることで地面がよりきれいになる事を特徴とする。(以下一例として数字をあげると 大きさ 1840×720 重さは15kg前後としている。)   FIG. 3 shows an example in which the mesh of the ground leveling tool according to claim 3 of the present invention is reduced. Connected to the second aspect of the present invention, the ground is made cleaner by pulling or pulling alone. (Hereafter, as an example, the size is 1840 x 720 and the weight is about 15 kg.)

1.本発明1の効果として図1に示すように本発明1にクサリ(またはロープ)11を取り付けて、自動車で引っ張って、後方に取り付けたクギにより地面が掘り起こされ、雑草、小石、ゴミ等を取ることができ、また凸凹部分がなくなり平坦に均すことが出来る。
2.雨上がりの様な地面の軟弱な場合、本発明1を使用することにより、地面の乾きが早くなる。
3.本発明1を使用する回数を重ねることにより、グランド等の水はけが良くなる。
4.本発明1を使用する回数を重ねることにより雑草、小石、ゴミ等がなくなりきれいになる。
5.使用によりクギが短くなった場合は、いつでも簡単に取り替えることが出来る。(図1で示す通り5の角ボルトを取り外せば20分程度で取替可能である。)
6.本発明1は後方のみにクギがあるので安定性が良く、自動車で牽引する場合、梶棒などを取り付けなくても簡単に安定したグランド整地が可能である。
1. As an effect of the present invention 1, as shown in FIG. 1, the chain (or rope) 11 is attached to the present invention 1, pulled by an automobile, and the ground is dug up by the rear-mounted nail, and weeds, pebbles, garbage, etc. are taken out In addition, the convex and concave portions are eliminated and the surface can be leveled.
2. When the ground is soft, such as after rain, the use of the present invention 1 makes the ground dry faster.
3. By repeatedly using the present invention 1, drainage of ground or the like is improved.
4). Repeating the use of the present invention 1 eliminates weeds, pebbles, dust, etc., and cleans up.
5). If the nail becomes shorter after use, it can be easily replaced at any time. (As shown in FIG. 1, if the 5 square bolts are removed, they can be replaced in about 20 minutes.)
6). Since the present invention 1 has a nail only in the rear, the stability is good, and when towing with an automobile, a stable ground leveling can be easily performed without attaching a club or the like.

本発明2は、本発明1の後方に接続して引っ張ることにより、地面を平坦にすること、また雑草、小石、ゴミ等が網に引っかかり、取り除くことが出来る。   The present invention 2 can be connected to the rear of the present invention 1 and pulled to flatten the ground, and weeds, pebbles, dust and the like can be caught by the net and removed.

本発明2の後方に網目を小さくしたものを接続して引っ張ることにより、地面がより平坦になり、小さいゴミ、雑草等がとれ一層仕上がりがきれいである。   By connecting and pulling the back of the second aspect of the present invention with a smaller mesh, the ground surface becomes flatter, and small dust, weeds, etc. are removed, and the finish is further improved.

本発明1、2、それと網目を小さくしたもの3点を複数個、いろいろな所のグランドに人の手を借りることなく移動し、使用することが簡単でいつでもどこでも作業が出来る。(寸法 1840×710)重量、危険性が少なく一人でトラックに積める)   The present invention 1, 2 and a plurality of three points with a small mesh can be moved to various grounds without help from a person and can be used at any time and anywhere. (Dimension 1840 x 710) Less weight, less danger, and can be loaded on the truck alone)

実施の形態の1例として図1は本発明1の説明図である。
鋼鉄の網1に前後をアングル2を固定し、後部に鋼鉄のクギ3を取り付け、後部アングルに本発明2を接続する為のシャクル6を2ヶ所取り付け、前部分には自動車等で引っ張る為のシャクル6を2ヶ所取り付けている。
FIG. 1 is an explanatory diagram of the present invention 1 as an example of the embodiment.
The angle 2 is fixed to the front and back of the steel net 1, the steel keg 3 is attached to the rear, the two shackles 6 for connecting the present invention 2 are attached to the rear angle, and the front part is pulled by an automobile etc. Two shackles 6 are attached.

実施の形態の一例として、本発明1の整備方法としては、地面がさらさらに乾燥している場合は図6で示す通り本発明2、それと網目を小さくしたものを接続して使用すれば一度に地面の凸凹、雑草、小石、ゴミ等を取り除き平坦に均すことが出来る。   As an example of the embodiment, as a maintenance method of the present invention 1, when the ground is further dry, the present invention 2, as shown in FIG. Can remove unevenness on the ground, weeds, pebbles, dust, etc., and level it flat.

雨上がりや水分を大量に含んだ地面の場合は、図4で示す通り本発明1だけを引っ張る事により地面の凸凹がなくなり雑草、小石が掘り起こされ地面の乾燥を早くすることが出来る。   In the case of the ground after rain or a large amount of water, by pulling only the present invention 1 as shown in FIG. 4, weeds and pebbles can be dug up and the ground can be dried quickly by pulling only the present invention 1.

実施の形態の一例として、図2は本発明2の説明図である。鋼鉄の網の前部に鉄棒を固定し、本発明1に接続する為のシャクル6を2ヶ所取り付け、そこにクサリを取り付けている。後方の網に2ヶ所シャックル7を網目を小さくしたものを接続する為に取り付けている。
地面の乾き具合により、図7で示す通り、本発明2だけを引っ張ることにより地面を平坦に均すことができ、雑草、小石、ゴミ等の取り除きが出来る。
As an example of the embodiment, FIG. 2 is an explanatory diagram of the second aspect of the present invention. A steel bar is fixed to the front part of the steel net, and two shackles 6 for connecting to the present invention 1 are attached, and a chain is attached thereto. Two shackles 7 are attached to the rear net to connect the smaller one.
Depending on how the ground dries, as shown in FIG. 7, by pulling only the present invention 2, the ground can be leveled and weeds, pebbles, dust, etc. can be removed.

地面が乾燥して簡単に凸凹が取り除く事が出来る場合は、図8で示す通り本発明2と網目を小さくしたものを接続して引っ張ると平坦に均し、雑草、小石、ゴミ等を取り除くことができ地面がきれいに仕上がる。   When the ground is dry and the unevenness can be easily removed, connect the present invention 2 with a small mesh as shown in FIG. 8 and pull it flat to level out and remove weeds, pebbles, dust, etc. And the ground is finished neatly.

地面の乾き具合によっては、図5で示す通り、本発明1と本発明2を接続して使用すれば地面の凸凹がなくなり雑草、小石、ゴミ等の取り除きが出来る。   Depending on how the ground dries, as shown in FIG. 5, if the present invention 1 and the present invention 2 are connected and used, the unevenness of the ground disappears and weeds, pebbles, dust, etc. can be removed.

実施の形態の一例として図3は本発明2の網目を小さく、重量を軽くした一例である。鋼鉄の網の前部に鉄棒を固定し、本発明2と接続する為のシャクル6とそれにクサリを取り付けた。
乾いた地面に図8で示す通り、本発明2に接続して使用すれば地面の仕上がりが非常にきれいである。
As an example of the embodiment, FIG. 3 is an example in which the mesh of the second aspect of the present invention is small and light in weight. A steel bar was fixed to the front part of the steel net, and a shackle 6 for connecting with the present invention 2 and a chain were attached thereto.
As shown in FIG. 8, the finish of the ground is very beautiful when used by connecting to the present invention 2 as shown in FIG.

本発明1〜2は四季を問わず、グランドの様々な状態に対応出来るように平坦に均す効果と、雑草、小石、ゴミ等を取り除く効果を取り混ぜて砂地用グランド専用に最適に使用できる整備具を製作することが出来るものである。   The present invention 1-2 is a maintenance that can be optimally used exclusively for sandy ground by combining the effects of leveling so that it can respond to various ground conditions regardless of the season, and the effect of removing weeds, pebbles, dust, etc. A tool can be made.

地面の状態により、本発明1、本発明2、網目の小さいものとを色々と組合せをしたり、単独使用したりすれば良い。   According to the state of the ground, the present invention 1, the present invention 2, and the one having a small mesh may be combined in various ways or used alone.

本発明1の実施の形態の一例を示す斜視図The perspective view which shows an example of embodiment of this invention 1 本発明2の実施の形態の一例を示す斜視図The perspective view which shows an example of embodiment of this invention 2 本発明2の実施の形態の一例を示す斜視図The perspective view which shows an example of embodiment of this invention 2 本発明1の使用形態Use form of the present invention 1 本発明1と本発明2の使用形態Use form of the present invention 1 and the present invention 2 本発明1と本発明2を複数用いた使用形態Usage form using a plurality of Inventions 1 and 2 本発明2の使用形態Usage form of the present invention 2 本発明2を複数用いた使用形態Usage form using a plurality of the present inventions 2

符号の説明Explanation of symbols

A 本発明1を示す。
B 本発明2を示す。
C 本発明2を軽くした一例を示す。
1 鋼鉄の網(40×75×6)
2 アングル(50×50×4)
3 鋼鉄のクギ(5×100)
4 アングル(30×30×3)
5 角ボルト
6 シャックル
7 シャックル(No.6より大きい)
8 クサリ
9 鉄棒
10 鋼鉄の網(30×70×4)
11 クサリ(またはロープ)
上記1〜11の項目の( )内の数字は使用材料の一例として縦、横の長さ、厚み等を表示している。
A Present invention 1 is shown.
B Present invention 2.
C An example of lightening the present invention 2 is shown.
1 Steel mesh (40 × 75 × 6)
2 angles (50 x 50 x 4)
3 Steel Nail (5 × 100)
4 angles (30 x 30 x 3)
5 Square bolt 6 Shackle 7 Shackle (larger than No. 6)
8 Chain 9 Bar 10 Steel net (30 × 70 × 4)
11 Chain (or rope)
The numbers in parentheses in the items 1 to 11 indicate the length, width, thickness, etc. as an example of the material used.

Claims (3)

鋼鉄製の網などの前後にアングルを固定して重量のある板を構成し、その板の後部にあるアングル部分にクギを一列に取り付け、地面の掘り起こしをすることを特徴とする整地具。   A leveling tool characterized by forming a heavy plate by fixing the angle to the front and back of a steel net, etc., and attaching a row of nails to the angle part at the rear of the plate to dig up the ground. 鋼鉄などで出来た網の前に棒を固定し(クギのないもの)クサリまたはロープで引きずる事で地面が平坦になる特徴のあるグランド整地具。   A ground leveling tool characterized by flattening the ground by fixing a rod in front of a net made of steel, etc. 上記請求項1〜2を複数個または請求項2の網の大きさと重量を小さくしたグランド整地具を併せてクサリまたはロープでつなぎ地面の仕上げをするのに用いるグランド整地具。   A ground leveling tool used for finishing the ground by connecting a plurality of the above-mentioned claims 1 and 2 or a ground leveling tool having a reduced net size and weight according to claim 2 with a chain or a rope.
JP2007270859A 2007-10-18 2007-10-18 Ground leveling tool Active JP4992658B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200450005Y1 (en) * 2009-12-21 2010-08-30 한국마사회 Apparatus for Readjusting Horse Racing Track
KR101526519B1 (en) * 2014-10-17 2015-06-05 주식회사 스마츠 An Playground Arrangement Device
JP2016023483A (en) * 2014-07-22 2016-02-08 富士見鉄工株式会社 Ground maintenance equipment

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200472847Y1 (en) * 2012-11-23 2014-05-27 주식회사 서연이엔지 Apparatus For Making Play Ground

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63125705A (en) * 1986-11-13 1988-05-28 植嶋 康夫 Tool for leveling athletic field
JPS63181606U (en) * 1987-05-15 1988-11-24
JPH0351113U (en) * 1989-09-26 1991-05-17
JPH0357429U (en) * 1989-10-03 1991-06-03
JPH03100904U (en) * 1990-01-29 1991-10-22
JP2003055925A (en) * 2001-08-20 2003-02-26 Eitaro Terakawa Ground filter
JP2003268736A (en) * 2002-01-10 2003-09-25 Eitaro Terakawa Ground maintenance implement
JP2006009332A (en) * 2004-06-24 2006-01-12 Eitaro Terakawa Ground-keeping equipment
JP2006109867A (en) * 2004-10-12 2006-04-27 Eitaro Terakawa Ground leveling implement

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63125705A (en) * 1986-11-13 1988-05-28 植嶋 康夫 Tool for leveling athletic field
JPS63181606U (en) * 1987-05-15 1988-11-24
JPH0351113U (en) * 1989-09-26 1991-05-17
JPH0357429U (en) * 1989-10-03 1991-06-03
JPH03100904U (en) * 1990-01-29 1991-10-22
JP2003055925A (en) * 2001-08-20 2003-02-26 Eitaro Terakawa Ground filter
JP2003268736A (en) * 2002-01-10 2003-09-25 Eitaro Terakawa Ground maintenance implement
JP2006009332A (en) * 2004-06-24 2006-01-12 Eitaro Terakawa Ground-keeping equipment
JP2006109867A (en) * 2004-10-12 2006-04-27 Eitaro Terakawa Ground leveling implement

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200450005Y1 (en) * 2009-12-21 2010-08-30 한국마사회 Apparatus for Readjusting Horse Racing Track
JP2016023483A (en) * 2014-07-22 2016-02-08 富士見鉄工株式会社 Ground maintenance equipment
KR101526519B1 (en) * 2014-10-17 2015-06-05 주식회사 스마츠 An Playground Arrangement Device

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