JPH0444702Y2 - - Google Patents
Info
- Publication number
- JPH0444702Y2 JPH0444702Y2 JP1988118274U JP11827488U JPH0444702Y2 JP H0444702 Y2 JPH0444702 Y2 JP H0444702Y2 JP 1988118274 U JP1988118274 U JP 1988118274U JP 11827488 U JP11827488 U JP 11827488U JP H0444702 Y2 JPH0444702 Y2 JP H0444702Y2
- Authority
- JP
- Japan
- Prior art keywords
- holes
- base layer
- water
- gutter
- surface 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.)
- Expired
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Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は道路の側溝や枡の開口部等に覆設され
る透水性覆蓋に関する。[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a water-permeable cover that is placed over the opening of a road gutter or a square.
（従来の技術）
舗装道路の両側部には道路表面上の雨水等を円
滑に排出させる為側溝が設けられる。そして建屋
の出入り口等の如く必要箇所の側溝には歩行や車
の走行の障害とならないよう溝蓋が覆設され、従
来斯かる溝蓋としてはコンクリートの板状成型体
が主に採用されていた。近時、子供や老人の脱落
或いは車の脱輪を防止する為側溝を全面覆蓋する
ことが必要とされ、その為側溝本来の機能を維持
し得る透水性の溝蓋が用いられるようになつた。
この透水性溝蓋としては、すのこ状の所謂グレー
チングメタル板が主に採用されている。(Prior Art) Gutters are provided on both sides of a paved road to smoothly drain rainwater, etc. from the road surface. Gutters in necessary locations such as building entrances and exits are covered with gutter covers so as not to obstruct walking or driving. Conventionally, such gutter covers have mainly been made of concrete plates. . In recent years, it has become necessary to cover the entire surface of street gutters to prevent children and the elderly from falling off or vehicles from falling off, and for this reason, water-permeable gutter covers that maintain the original function of street gutters have come to be used. .
As this water-permeable gutter cover, a so-called grating metal plate having a drainboard shape is mainly used.
（考案が解決しようとする課題）
然し乍ら、上記グレーチングメタルによる溝蓋
の場合、落下した木の葉等が格子間隙を透過し、
これが側溝内に堆積して排水の流れを阻害したり
することがある。亦、女性のハイヒールの踵がつ
つかかり思わぬ事故の原因となつたりすることも
ある。更に、格子間隙から側溝底部が透視できる
為、歩行者が恐怖心を抱いたりする。等々の問題
点が指摘されていた。(Problem to be solved by the invention) However, in the case of the gutter cover made of grating metal, fallen leaves, etc. pass through the grating gaps,
This can accumulate in the gutters and obstruct the flow of drainage. In addition, the heels of women's high heels can sometimes cause unexpected accidents. Furthermore, the bottom of the gutter can be seen through the lattice gaps, which may cause fear to pedestrians. Other problems were pointed out.
本考案は上記に鑑みなされたもので、木の葉等
が透過する間隙を有さず、しかも上記事故や恐怖
心を惹起させない新規な透水性覆蓋を提供せんと
するものである。 The present invention was developed in view of the above, and aims to provide a novel water-permeable cover that does not have any gaps through which leaves or the like can pass through, and which does not cause the accidents or fear described above.
（課題を解決する為の手段）
上記目的を達成する為の本考案透水性覆蓋の構
成を添付の実施例図に基づき説明するに、第１図
は本考案透水性覆蓋の一実施例を示す部分的切欠
斜視図、第２図は第１図−線拡大断面図、第
３図は同実施例の使用例を示す縦断面図、第４図
は他の実施例の第２図と同様図、第５図は更に他
の実施例の縦断説明図である。即ち、本考案の透
水性覆蓋は、縦横の格子状に組み立てた鉄筋１
１，１１を厚み内に埋設し、且つその厚み方向に
貫通する複数個の透孔１２，１２，１２を具備し
たコンクリート基層部１を構成すると共に、多数
個の粒状骨材２１，２１，２１をエポキシ樹脂製
又はウレタン樹脂製の結合材２２で相互に結合す
ることにより、少なくとも厚み方向に連通する多
数個の透水孔２３，２３，２３を有するエポキシ
樹脂製又はウレタン樹脂製のコンクリート表層部
２を構成して、その表層部２を前記基層部１上に
一体的に積層して成ることを要旨とするものであ
る。(Means for Solving the Problems) The structure of the water-permeable cover of the present invention to achieve the above object will be explained based on the attached embodiment drawings. Figure 1 shows an embodiment of the water-permeable cover of the present invention. FIG. 2 is a partially cutaway perspective view, FIG. 2 is an enlarged sectional view taken along the lines of FIG. 1, FIG. 3 is a longitudinal sectional view showing an example of use of the same embodiment, and FIG. , FIG. 5 is a longitudinal sectional view of still another embodiment. That is, the water-permeable cover of the present invention has reinforcing bars 1 assembled in a vertical and horizontal grid pattern.
1 and 11 are buried within the thickness, and a plurality of through holes 12, 12, 12 penetrating the concrete base layer 1 in the thickness direction, and a large number of granular aggregates 21, 21, 21. A concrete surface layer 2 made of epoxy resin or urethane resin having a large number of water permeable holes 23, 23, 23 communicating at least in the thickness direction by bonding them together with a binding material 22 made of epoxy resin or urethane resin. The main feature is that the surface layer part 2 is integrally laminated on the base layer part 1.
基層部１は、通常のコンクリート成型体を母体
とするもので、その成型時に縦横に組まれた鉄筋
１１を埋設し、成型後厚み方向に貫通する複数の
透孔１２…を穿設したもの或いは成型時に同時に
透孔１２…を形成したものが採用される。透孔１
２は、第１図及び第２図に示す如き円筒状のもの
や第４図に示す如き下向漸開テーパー状で截頭円
錐形のものの他に角筒状のものなど適宜採用可能
である。該基層部１の厚み、大きさ、鉄筋１１の
太さ及び組格格子間隙等は、側溝の開口幅及び強
度等を勘案して定められるが、開口幅が430mmの
側溝用としては、基層部１の厚みを110mm、大き
さを430×500mm、鉄筋１１の太さを13mm、鉄筋１
１の組格格子間隙を110mmとすれば、重量物の走
行にも充分に耐えることが出来る。亦、透孔１２
…の形成個数は透水性を勘案して定められるが、
１個の開口部面積を3.14cm2とすれば１m2当り60個
が適当とされる。 The base layer 1 is made of a normal concrete molded body, in which vertically and horizontally assembled reinforcing bars 11 are buried during molding, and after molding, a plurality of through holes 12 are bored through it in the thickness direction, or One in which through holes 12 are formed at the same time as the molding is used. Through hole 1
2 may be suitably cylindrical as shown in FIGS. 1 and 2, a truncated conical shape with a gradual downward taper as shown in FIG. 4, or a rectangular tubular shape as shown in FIG. . The thickness and size of the base layer part 1, the thickness of the reinforcing bars 11, the spacing between the grids, etc. are determined by taking into account the opening width and strength of the side gutter, but for a side gutter with an opening width of 430 mm, the base layer part The thickness of 1 is 110 mm, the size is 430 x 500 mm, the thickness of reinforcing bar 11 is 13 mm, reinforcing bar 1
If the lattice gap of No. 1 is 110 mm, it can sufficiently withstand the running of heavy objects. In addition, through hole 12
The number of formations is determined taking into consideration water permeability, but
If the area of one opening is 3.14 cm 2 , 60 pieces per 1 m 2 is appropriate.
一方表層部２は、粒状1.0mm乃至5.0mmの粒状骨
材２１と、疎水性を具備したエポキシ樹脂製又は
ウレタン樹脂製の結合材２２とを混練して構成さ
れている。 On the other hand, the surface layer portion 2 is constructed by kneading granular aggregate 21 with a particle size of 1.0 mm to 5.0 mm and a binding material 22 made of hydrophobic epoxy resin or urethane resin.
エポキシ樹脂は、摩擦係数の大きい砂、石粉、
顔料等を加えると共に、使用直前に硬化剤を加え
て道路補修材として施工されており、道床との接
着力が良好であるので、薄い層でも充分に道路補
修材の役目を果たすことができ、而も路面とタイ
ヤとの摩擦係数が大きいのでスリツプ事故を防止
することができるのは勿論、摩耗しにくく長期使
用に耐え、道路損傷箇所の補修工事が簡単で耐油
性も良好であることと相俟つて、道路工事用とし
て最適の用途を有している。 Epoxy resin is suitable for sand, stone powder, and
It is applied as a road repair material by adding pigments, etc. and a hardening agent just before use, and it has good adhesion to the roadbed, so even a thin layer can fully fulfill the role of a road repair material. Moreover, the coefficient of friction between the road surface and the tires is high, which of course prevents slip accidents, but it is also resistant to wear and can withstand long-term use, making it easy to repair road damage and having good oil resistance. Overall, it has an optimal use for road construction.
又ウレタン樹脂は、弾性、強靱性等に富んでお
り、引裂き強度が大きく、耐摩耗性、耐老化性及
び耐油性、耐溶剤性、低温特性等にも優れ、更に
ポリエステル樹脂と比較すると耐アルカリ性にも
優れているので、下地コンクリートとして劣化す
ることがない利点がある。 In addition, urethane resin is rich in elasticity, toughness, etc., has high tear strength, and has excellent abrasion resistance, aging resistance, oil resistance, solvent resistance, low temperature properties, etc., and is also more alkali resistant than polyester resin. It also has the advantage of not deteriorating as a base concrete.
このようにエポキシ樹脂又はウレタン樹脂は、
橋とか高速道路用に使用して好適な利点を有して
いるので、本考案に係る透水性覆蓋では、このエ
ポキシ樹脂又はウレタン樹脂を粒状骨材１１の結
合材２２として使用しているのである。そして表
層部２内に、少なくとも厚み方向に連通する多数
個の透水孔２３，２３，２３を形成するための、
粒状骨材２１とエポキシ樹脂製又はウレタン樹脂
製の結合材２２との適正配合の割合は、
粒状骨材：結合材＝100：２乃至８
であり、これにより18〜30％の空隙率が得られ
る。亦、シランカツプリング剤等を適量添加する
とその結合力が増し、更に適当な着色剤を加える
ことによりカラフルな覆蓋を得ることも出来る。
粒状骨材２１…は、海岸や河口付近で採取される
玉砂利、各種砂礫、高炉・転炉スラグ、砕石等が
採用され、適用場所等に応じて適宜選択される。 In this way, epoxy resin or urethane resin
This epoxy resin or urethane resin is used as the binding material 22 of the granular aggregate 11 in the water-permeable cover according to the present invention because it has advantages suitable for use in bridges and expressways. . In order to form a large number of water permeable holes 23, 23, 23 communicating at least in the thickness direction in the surface layer 2,
The proper blending ratio of the granular aggregate 21 and the binder 22 made of epoxy resin or urethane resin is granular aggregate: binder = 100:2 to 8, thereby obtaining a porosity of 18 to 30%. It will be done. In addition, adding an appropriate amount of a silane coupling agent or the like increases the binding strength, and adding an appropriate coloring agent also makes it possible to obtain a colorful cover.
The granular aggregate 21 is selected from gravel collected near the coast and river mouth, various types of sand and gravel, blast furnace/converter slag, crushed stone, etc., and is appropriately selected depending on the application site.
亦、表面に吊上げ工具を係止する為の穴３，３
を凹設すること、更には側面にインターロツク用
の凹及び／若しくは突部４を設けることも可能で
ある。 In addition, holes 3, 3 for locking the lifting tool on the surface
It is also possible to provide a recess and/or a protrusion 4 for interlocking on the side surface.
（作用）
上記構成の透水性覆蓋は、例えば第３図の如く
側溝５の開口部上縁に形成された受枠５１，５１
間に横架され、長手方向に沿つて敷き詰められ覆
設される。雨水等はこの表層部２の透水孔２３…
を通つて基層部１に達し、更に該基層部１の透孔
１２…を通つて側溝５に速やかに流下する。表層
部２の透水孔２３…は、粒状骨材２１…がエポキ
シ樹脂製又はウレタン樹脂製の結合材２２によつ
て相互に結合されて形成された骨材２１…間の孔
〓であるから極めて小さく、従つて木の葉等がこ
の孔〓を透過することもなく、またハイヒールの
踵がつつかかつたりする懸念がない。亦、表層部
２は骨材２１…とエポキシ樹脂製又はウレタン樹
脂製の結合材２２とが複雑に絡まり合つて形成さ
れたレジンコンクリートの層であり、しかもその
下部には透孔１２…を除いて緻密に硬化したコン
クリートの基層部１が存在するから、側溝３内が
透視されることもなく、恐怖心も惹起されない。
更に、基層部１の厚み内には補強用の鉄筋１１が
埋設されているから、極めて強度が大であり、重
量物の走行にも充分に耐えることが出来る。(Function) The water-permeable cover having the above-mentioned structure has, for example, receiving frames 51, 51 formed at the upper edge of the opening of the side gutter 5 as shown in FIG.
It is placed horizontally between the two, and is laid out and covered along the length. Rainwater, etc. flows through the water permeability holes 23 in the surface layer 2...
It reaches the base layer part 1 through the base layer part 1, and further quickly flows down into the side gutter 5 through the through holes 12 of the base layer part 1. The water permeation holes 23 in the surface layer 2 are holes between the aggregates 21 formed by bonding the granular aggregates 21 to each other with a bonding material 22 made of epoxy resin or urethane resin. It is small, so leaves, etc. will not pass through this hole, and there is no risk of the heel of a high heel hitting it. In addition, the surface layer 2 is a layer of resin concrete formed by intricately intertwining aggregates 21 and binding materials 22 made of epoxy resin or urethane resin, and there are no through holes 12 in the lower part of the layer. Since the base layer 1 is made of densely hardened concrete, the inside of the gutter 3 is not seen through, and fear is not caused.
Further, since reinforcing steel bars 11 are buried within the thickness of the base layer 1, the base layer 1 has extremely high strength and can sufficiently withstand running of heavy objects.
（実施例）
次に側溝用溝蓋を例に採つた実施例について述
べる。第１図及び第２図に於いては、透孔１２が
円筒状であることを示し、斯かる透孔１２は基層
部１の成型時同時に形成することも可能である
が、成型後穿設によつて形成することも出来る。
これに対し、第４図に示す透孔１２は下向漸開テ
ーパー状であり、この場合は成型時に同時に形成
することができ、型枠との離型性がよい点と排水
性に優れる点で望ましく採用される。また、第１
図は表面の対向辺近傍に吊上げ工具係止用穴３，
３が凹設されており、該係止用穴３，３の内面に
は雌ねじ３１が刻設され、吊上げ用工具としての
ボルト（不図示）を螺装することによつて各溝蓋
を吊上げ可能とされている。尚、この吊上げを容
易にする為、溝蓋の側面を下方に向いテーパー状
とし縦断面形状を逆台形としたものも望ましく採
用される。(Example) Next, an example will be described in which a gutter cover for a side gutter is taken as an example. In FIGS. 1 and 2, the through hole 12 is shown to be cylindrical, and although it is possible to form the through hole 12 at the same time as molding the base layer 1, it is possible to form the through hole 12 after molding. It can also be formed by
On the other hand, the through hole 12 shown in FIG. 4 has a tapered shape that gradually opens downward, and in this case, it can be formed at the same time as molding, and has the advantage of good mold releasability from the mold and excellent drainage performance. It is desirable to be employed in Also, the first
The figure shows holes 3 for locking lifting tools near the opposite sides of the surface.
3 is recessed, and a female thread 31 is cut into the inner surface of the locking holes 3, 3, and each groove cover can be lifted by threading a bolt (not shown) as a lifting tool. It is considered possible. In order to facilitate this lifting, it is also desirable to have the side surfaces of the gutter cover tapered downward and the longitudinal cross-sectional shape of the gutter cover to be an inverted trapezoid.
第５図は、溝蓋を側溝に沿つて敷き詰める際に
相互をインターロツクし、個々の溝蓋が簡単には
取外せないようにしてその盗難防止を図ろうとし
たものである。第５図イに示す例は、基層部１の
側面に凹穴（凹部）４，４を形成し、この凹穴
４，４に連結部材４１を共軛的に嵌入して隣接溝
蓋同士をインターロツクしようとするものであ
る。また、第５図ロは、基層部１の両側面に形状
が対応する凹条４及び凸条４′（凹部及び突部）
を形成し、側溝に敷き詰める際にこの凹条４及び
凸条４′同士を互いに嵌合させることによつて上
記同様のインターロツク効果を期待せんとするも
のである。 FIG. 5 shows an attempt to prevent theft by interlocking the gutter covers when they are laid out along the side gutter so that each gutter cover cannot be easily removed. In the example shown in FIG. 5A, recessed holes (recessed portions) 4, 4 are formed in the side surface of the base layer portion 1, and connecting members 41 are fitted into the recessed holes 4, 4 in a joint manner to connect adjacent groove covers. This is an attempt to interlock. In addition, FIG.
The same interlocking effect as described above is expected by forming grooves 4 and fitting the protrusions 4' into each other when laying the grooves in the side gutter.
尚、上記実施例では溝蓋について述べたが、桝
蓋に応用しても同様の効果が期待される。亦、吊
上げ工具係止用穴３，３に代え表面に出没自在な
把手を形成したり、或いは側縁部に開蓋用切欠部
を設けたりすることは自由である。更に、図例の
インターロツク手段は他の変更が可能であること
も云うまでもない。 Although the above embodiments have been described with respect to groove covers, similar effects can be expected when applied to box covers. Furthermore, instead of the lifting tool locking holes 3, 3, a retractable handle may be formed on the surface, or a notch for opening the lid may be provided on the side edge. Furthermore, it goes without saying that other modifications to the illustrated interlocking means are possible.
（考案の効果）
本考案に係る透水性覆蓋は前記のような構成を
有しているために以下のような効果を奏すること
ができる。(Effects of the invention) Since the water-permeable cover according to the invention has the above-described configuration, it can produce the following effects.
即ち、多数個の粒状骨材２１，２１，２１をエ
ポキシ樹脂又はウレタン樹脂製の結合材２２を使
用して相互に結合することにより、表層部２に
は、少なくとも厚み方向に連通する多数個の透水
孔２３，２３，２３が形成され、且つコンクリー
ト基層部１には、厚み方向に貫通する複数個の透
孔１２，１２，１２を形成して、基層部１上に表
層部２を一体的に積層した状態では、透水孔２３
と透孔１２とが連通状態となるから、透水性に優
れており、路面に降つた雨水等は、この透水孔２
３と透孔１２とを介通して側溝等に排出され、表
層部２上に落下した木の葉等のゴミは、その表層
部２上にせき止められることになつて透水孔２３
及び透孔１２を通過しないから、ゴミの堆積によ
り側溝を塞いでしまう虞がない。 That is, by bonding a large number of granular aggregates 21, 21, 21 to each other using a bonding material 22 made of epoxy resin or urethane resin, the surface layer 2 has a large number of granular aggregates 21, 21, 21 that communicate at least in the thickness direction. Water permeable holes 23, 23, 23 are formed, and a plurality of permeable holes 12, 12, 12 are formed in the concrete base layer 1, penetrating in the thickness direction, so that the surface layer 2 is integrally formed on the base layer 1. In the state where it is laminated, the water permeable hole 23
Since the and the through holes 12 are in communication, it has excellent water permeability, and rainwater that falls on the road surface flows through the through holes 2.
3 and the through hole 12 to drain into the side gutter etc. and fall onto the surface layer 2. Debris such as leaves is dammed up on the surface layer 2 and is discharged into the gutter etc. through the through hole 23.
Also, since the dirt does not pass through the through hole 12, there is no risk of dirt accumulating and blocking the side gutter.
表層部２には、多数個の粒状骨材２１，２１，
２１との結合材２２として、エポキシ樹脂又はウ
レタン樹脂を使用しているが、エポキシ樹脂は、
道床との接着力が良好であるため、薄い層に敷設
しても充分に道路用としての役目を果たすことが
でき、而も路面とタイヤとの摩擦係数が大きいの
で、スリツプ事故を防止できるのは勿論、摩耗し
にくい性質があり、長期使用に耐え、耐油性も良
好で最適の用途を有しており、一方ウレタン樹脂
は、弾性、強靱性等に富んでおり、引裂き強度が
大きく、耐摩耗性、耐老化性及び耐油性、耐溶剤
性、低温特性等にも優れ、更にポリエステル樹脂
と比較すると耐アルカリ性にも優れ、下地コンク
リートとして劣化することがない性質があり、こ
のエポキシ樹脂又はウレタン樹脂は、覆蓋の表層
部２を構成する粒状骨材２１との結合材２２に使
用して好適である。 In the surface layer 2, a large number of granular aggregates 21, 21,
Epoxy resin or urethane resin is used as the bonding material 22 with 21.
Because it has good adhesion to the roadbed, it can be used for road use even when it is laid in a thin layer, and the coefficient of friction between the road surface and tires is high, so it can prevent slip accidents. Of course, urethane resin has the property of being hard to wear, durable for long-term use, and has good oil resistance, making it ideal for use.On the other hand, urethane resin is rich in elasticity, toughness, etc., and has high tear strength and resistance. This epoxy resin or urethane resin has excellent abrasion resistance, aging resistance, oil resistance, solvent resistance, low-temperature properties, etc., and also has excellent alkali resistance compared to polyester resin, and does not deteriorate as a base concrete. Resin is suitable for use as the bonding material 22 with the granular aggregate 21 that constitutes the surface layer 2 of the cover.
更に表層部２に粒状骨材２１として玉砂利、各
種砂礫、採石等の天然骨材を使用すれば、覆蓋全
体の表面はその天然骨材で覆われることになるの
で、路面に敷設した状態では道路全体の外観が素
晴らしい景観を呈する効果がある。 Furthermore, if natural aggregates such as gravel, various gravels, and quarried stones are used as the granular aggregate 21 in the surface layer 2, the entire surface of the cover will be covered with the natural aggregates, so when it is laid on the road surface, it will not work on the road. The overall appearance has the effect of presenting a wonderful landscape.
又基層部１は、その厚み内に縦横の格子状に組
み立てた鉄筋１１，１１を埋設しているので、覆
蓋に大きな強度を付与することができて、重量物
をその上に載置してもその重さに充分耐えること
ができる等、極めて実用的価値の大きい優れた特
長を有しているのである。 In addition, the base layer 1 has reinforcing bars 11, 11 assembled in a vertical and horizontal lattice pattern embedded within its thickness, so it can provide great strength to the cover, making it possible to place heavy objects on it. It has excellent features of extremely practical value, such as being able to withstand its weight.
第１図は本考案透水性覆蓋の一実施例を示す部
分切欠斜視図、第２図は第１図−線拡大断面
図、第３図は同実施例の使用例を示す縦断面図、
第４図は他の実施例の第２図と同様図、第５図は
更に他の実施例の縦断説明図である。
符号の説明、１……基層部、１１……鉄筋、１
２……透孔、２……表層部、２１……粒状骨材、
２２……合成樹脂結合材、２３……透水孔。
Fig. 1 is a partially cutaway perspective view showing an embodiment of the water permeable cover of the present invention, Fig. 2 is an enlarged sectional view taken along the line of Fig. 1, and Fig. 3 is a vertical sectional view showing an example of the use of the same embodiment.
FIG. 4 is a diagram similar to FIG. 2 of another embodiment, and FIG. 5 is a longitudinal sectional view of still another embodiment. Explanation of symbols, 1...Base layer part, 11...Reinforcement bar, 1
2... Through hole, 2... Surface layer part, 21... Granular aggregate,
22...Synthetic resin binding material, 23...Water permeation hole.
Claims (1)
み内に埋設し、且つその厚み方向に貫通する複数
個の透孔１２，１２，１２を具備したコンクリー
ト基層部１を構成すると共に、多数個の粒状骨材
２１，２１，２１をエポキシ樹脂製又はウレタン
樹脂製の結合材２２で相互に結合することによ
り、少なくとも厚み方向に連通する多数個の透水
孔２３，２３，２３を有する合成樹脂製表層部２
を構成して、その表層部２を前記基層部１上に一
体的に積層して成る透水性覆蓋。 Concrete base layer 1 is constructed by embedding reinforcing bars 11, 11 assembled in a grid pattern vertically and horizontally within the thickness, and having a plurality of through holes 12, 12, 12 penetrating in the thickness direction. By mutually bonding granular aggregates 21, 21, 21 with a binding material 22 made of epoxy resin or urethane resin, a synthetic resin surface layer having a large number of water permeable holes 23, 23, 23 communicating at least in the thickness direction is created. Part 2
A water-permeable cover comprising a surface layer 2 of which is integrally laminated on the base layer 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988118274U JPH0444702Y2 (en) | 1988-09-08 | 1988-09-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988118274U JPH0444702Y2 (en) | 1988-09-08 | 1988-09-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0242989U JPH0242989U (en) | 1990-03-26 |
| JPH0444702Y2 true JPH0444702Y2 (en) | 1992-10-21 |
Family
ID=31362486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988118274U Expired JPH0444702Y2 (en) | 1988-09-08 | 1988-09-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0444702Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2510938Y2 (en) * | 1991-03-12 | 1996-09-18 | 株式会社中山製鋼所 | Water-permeable groove lid |
| JP2510942Y2 (en) * | 1991-06-19 | 1996-09-18 | 株式会社中山製鋼所 | Water-permeable landscape groove lid |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55145585U (en) * | 1979-03-31 | 1980-10-18 | ||
| JPS5943584U (en) * | 1982-09-16 | 1984-03-22 | 株式会社ウチコン | Concrete lid with water permeable part |
-
1988
- 1988-09-08 JP JP1988118274U patent/JPH0444702Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0242989U (en) | 1990-03-26 |
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