JP2789438B2 - Universal joints installed on small-diameter PVC manholes - Google Patents
Universal joints installed on small-diameter PVC manholesInfo
- Publication number
- JP2789438B2 JP2789438B2 JP7056726A JP5672695A JP2789438B2 JP 2789438 B2 JP2789438 B2 JP 2789438B2 JP 7056726 A JP7056726 A JP 7056726A JP 5672695 A JP5672695 A JP 5672695A JP 2789438 B2 JP2789438 B2 JP 2789438B2
- Authority
- JP
- Japan
- Prior art keywords
- core
- small
- shell
- manhole
- pvc
- 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 - Fee Related
Links
Landscapes
- Sewage (AREA)
- Joints Allowing Movement (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、塩ビ製小口径マンホ−
ルまたは塩ビ製小口径ますに設けた自在継手に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small-diameter PVC
The present invention relates to a universal joint provided on a small-diameter sleigh made of metal or PVC.
【０００２】[0002]
【従来の技術】昭和４０年代前半より下水道管に塩ビ管
が採用されてからも、依然として現在、公道においては
コンクリ−ト製マンホ−ルが用いられている。そのた
め、塩ビ製マンホ−ルの出現が強く要請されている。2. Description of the Related Art Even though PVC pipes have been used as sewer pipes since the early 1960s, concrete manholes are still used on public roads. Therefore, the appearance of PVC manholes has been strongly demanded.
【０００３】そこで、本出願人は、塩ビ製小口径宅内ま
すや小口径公共ますについての長年の実績をもとに、こ
れらの小口径ますを略スケ−ルアップした塩ビ製小口径
マンホ−ルを開発し（例えば、実開平５−８７０３６号
公報参照）、その実施品を既に提供している。[0003] Accordingly, the applicant of the present invention has developed a small-caliber PVC small manhole which is substantially scaled up based on many years of experience in small-caliber PVC home and small-caliber public masque. It has been developed (for example, see Japanese Utility Model Application Laid-Open No. 5-87036), and its implementation has already been provided.
【０００４】ところで、かかる塩ビ製小口径マンホ−ル
においても、流入・流出管の方向のずれに対応するた
め、塩ビ製小口径ますと同様、方向を自由に調整できる
自在継手を設けた小口径マンホ−ルの要請があるので、
図５に示す小口径マンホ−ルの開発を行った。Incidentally, even in such a small-diameter PVC manhole, in order to cope with a deviation in the direction of the inflow / outflow pipe, a small-diameter provided with a universal joint capable of freely adjusting the direction, similarly to the small-diameter PVC square. At the request of Manhole,
A small-diameter manhole shown in FIG. 5 was developed.
【０００５】これを図５に示す試作例により説明する。
１は射出またはブロ−成形した塩ビ製マンホ−ル本体で
あって、その上向きに点検筒用接合部２を、横向き上流
側に自在継手３を、下流側に差口４を、それぞれ設けて
いる。This will be described with reference to a prototype example shown in FIG.
Reference numeral 1 denotes an injection- or blow-molded PVC manhole body, which is provided with a check tube joining portion 2 upward, a universal joint 3 on the upstream side, and a spigot 4 on the downstream side. .
【０００６】この自在継手３の構造は、例えば、特公昭
６１−５３５９７号公報や特公平１−２１３９３号公報
で示されているものと同様の構造を採っているが、本試
作例では、予めＴ字状に成形されたマンホ−ル本体を用
い、このＴ字状水平部を更にブロ−成形して球面凹状シ
ェル５を作り、このシェル５に、Ｏリング６を介して、
球面凸状コア７を自由な向きに密接摺動できるように押
圧・挿入し、このコア７に流入管８をＴＳ接合してい
る。このコア７には、通常のＴＳ接合構造のようにスト
ッパ−９を設けて、流入管８の挿入の位置決めをしてい
る。The structure of the universal joint 3 is the same as that shown in, for example, Japanese Patent Publication No. 61-53597 and Japanese Patent Publication No. 1-21393. Using a T-shaped manhole body, the T-shaped horizontal portion is further blow-molded to form a spherical concave shell 5, and the shell 5 is connected to the shell 5 via an O-ring 6.
The spherical convex core 7 is pressed and inserted so that it can slide closely in a free direction, and the inflow pipe 8 is TS-joined to this core 7. The core 7 is provided with a stopper 9 as in a normal TS joining structure to position the insertion of the inflow pipe 8.
【０００７】ところが、かかる自在継手３を設けた塩ビ
製小口径マンホ−ルでは、流入管８を水平に対し約１５
°の最大振り角θで上向きにして使用すると、シェル５
の底部に、シェル５とコア７による段差が発生し、すな
わち汚物溜１０が発生し、悪臭の発生源になる、という
問題があった。However, in the small-diameter PVC manhole provided with the universal joint 3, the inflow pipe 8 is set at about 15
When used with the maximum swing angle θ of
There is a problem that a step is generated at the bottom of the shell 5 due to the shell 5 and the core 7, that is, a waste pool 10 is generated, which becomes a source of offensive odor.
【０００８】そこで、自在継手を設けた塩ビ製小口径ま
すにおいて、かかる汚物溜１０を無くすような提案がな
されているので（実公昭６１−１７０９３号公報参
照）、かかる提案を、前記塩ビ製小口径マンホ−ルの自
在継手に適用しようとしたところ、次のような問題があ
った。[0008] In view of this, a proposal has been made to eliminate such a filth reservoir 10 in a small-diameter PVC made with a universal joint (see Japanese Utility Model Publication No. Sho 61-17093). Attempts to apply it to a universal joint of a manhole bore have the following problems.
【０００９】[0009]
【発明が解決しようとする課題】すなわち、実公昭６１
−１７０９３号公報では、自在継手を設けた塩ビ製小口
径ますにおいて、ます本体に一体的に成形されたシェル
と、このシェルに、Ｏリングを介して、自由な向きに密
接摺動するように押圧・挿入されたコアと、からなり、
このコアに流入管が、コアのストッパ−迄挿入され、し
かも、シェルの底部を、ます本体の円弧状インバ−トと
同一円弧状でかつ水平状にして、シェルの底部の汚物溜
を無くしている。[Problems to be solved by the invention]
Japanese Patent No. 17093 discloses that in a small-diameter PVC sword provided with a universal joint, a shell integrally molded with a main body and an O-ring are slid in close contact with the shell in a free direction. Consisting of a pressed and inserted core,
An inflow pipe is inserted into this core up to the stopper of the core, and the bottom of the shell is made to be the same arc and horizontal as the arc-shaped invert of the main body, so that the dirt accumulation at the bottom of the shell is eliminated. I have.
【００１０】しかしながら、かかる提案の自在継手を設
けた塩ビ製小口径ますでは、シェルの底部を円弧状でか
つ水平状に形成したので、次のような問題があったHowever, in the PVC small-diameter truss provided with the proposed universal joint, since the bottom of the shell is formed in an arcuate and horizontal shape, there are the following problems.
【００１１】シェル全周のうち略下半分が球面でない
ことから、シェルからコアが抜け易くなり、もし、シェ
ルからコアが抜ければ、Ｏリングを介在させているの
で、再びシェルにコアを押圧・挿入することは、施工現
場では面倒になる。 シェルとコアの接触位置のうち、コア側の接触面は密
接摺動により変化するので、コア側にＯリングを嵌着さ
せると、シ−ルをしなくなる部分が生じるため、Ｏリン
グはシェル側に嵌着させることになり、ひいては、Ｏリ
ング溝の成形が困難となって、シ−ル性を損なう。 よって、本発明は、かかる問題を解決することを目的と
したものである。Since the lower half of the entire circumference of the shell is not spherical, the core can easily come off from the shell. If the core comes off from the shell, the O-ring is interposed. Insertion is troublesome at the construction site. Of the contact positions between the shell and the core, the contact surface on the core side changes due to close sliding, so that when the O-ring is fitted on the core side, there is a portion where the sealing is not performed. Therefore, it is difficult to form the O-ring groove, and the sealing property is impaired. Therefore, an object of the present invention is to solve such a problem.
【００１２】[0012]
【課題を解決するための手段】本発明の要旨とするとこ
ろは、上向きの点検筒、横向きの流入管用自在継手、お
よび、横向きまたは下向きの流出管用接合部を、それぞ
れ設けた塩ビ製小口径マンホ−ル等において、前記自在
継手を球面凹状シェル、球面凸状コアおよびＯリングで
構成し、該コアに流入側管を挿入し、該流入側管の差口
側を前記シェルの球面部よりマンホ−ル等本体側に突出
させることにより、シェル・コアで形成される汚物溜を
覆うと共に、該差口側の略上半分を切欠いて樋状受部と
したことを特徴とする塩ビ製小口径マンホ−ル等に設け
た自在継手にある。SUMMARY OF THE INVENTION The gist of the present invention is to provide a small-sized PVC manhole provided with an upwardly inspecting cylinder, a laterally oriented inflow pipe universal joint, and a laterally or downwardly oriented outflow pipe joint. The universal joint is composed of a spherical concave shell, a spherical convex core and an O-ring, an inflow side pipe is inserted into the core, and the spout side of the inflow side pipe is moved from the spherical portion of the shell to the manhole. A small-diameter PVC pipe having a gutter-shaped receiving portion formed by projecting toward a main body such as a shell to cover a dirt reservoir formed by a shell core, and notch an approximately upper half of the spout side. The universal joint provided on a manhole or the like.
【００１３】[0013]
【実施例】本発明を添付図面に示す実施例により詳細に
述べる。図１は本発明の第１の実施例の要部断面図、図
２は第２の実施例の要部断面図、図３は第３の実施例の
要部断面図、図４は第４の実施例の要部断面図である
が、試作例を示す図５と同一部分ないし均等部分は、図
示およびその説明を省略する。BRIEF DESCRIPTION OF THE DRAWINGS The invention will be described in more detail with reference to an embodiment shown in the accompanying drawings. 1 is a cross-sectional view of a main part of a first embodiment of the present invention, FIG. 2 is a cross-sectional view of a main part of a second embodiment, FIG. 3 is a cross-sectional view of a main part of a third embodiment, and FIG. 5 is a sectional view of an essential part of the embodiment, but illustration and description of the same parts or equivalent parts as those in FIG.
【００１４】これらの実施例は、道路幅員の比較的狭小
の公道に、２ｍ程度迄の深さで埋設される、自在継手を
設けた塩ビ製小口径マンホ−ルに好適であって、この小
口径マンホ−ルに接続する塩ビ製下水管は１００〜２０
０ｍｍφ、この小口径マンホ−ルの点検筒は３００ｍｍ
φの大きさが好適である。These embodiments are suitable for a small-diameter PVC manhole provided with a universal joint, which is buried in a relatively narrow public road at a depth of up to about 2 m. PVC sewer connected to a manhole with a diameter of 100 to 20
0mmφ, the inspection cylinder of this small diameter manhole is 300mm
The size of φ is preferred.
【００１５】図１において、１１は、射出成形された塩
ビ製マンホ−ル本体に、一体または別体で設けた点検筒
の一部を示し、この点検筒１１の管壁に開口部１２を設
け、この開口部１２に、射出成形された球面凹状シェル
１３の嵌合部１４を接着剤を用いて内嵌している。この
開口部１２の外周面に、この嵌合部１４の近傍に設けた
弯曲状フランジ１５を接着している。In FIG. 1, reference numeral 11 denotes a part of an inspection tube provided integrally or separately on an injection-molded PVC manhole body, and an opening 12 is provided in a pipe wall of the inspection tube 11. A fitting portion 14 of an injection-molded spherical concave shell 13 is internally fitted into the opening 12 using an adhesive. A curved flange 15 provided near the fitting portion 14 is bonded to the outer peripheral surface of the opening 12.
【００１６】したがって、このシェル１３には、通常の
球面部１６や接続管傾斜許容部１７の他に、前記嵌合部
１４や弯曲状フランジ１５を設けている。以上のシェル
１３には、Ｏリング１８を介して、射出成形された球面
凸状コア１９が押圧・挿入されている。このコア１９は
シェル１３に対し、通常のように自由な向きに密接摺動
する。Therefore, the shell 13 is provided with the fitting portion 14 and the curved flange 15 in addition to the normal spherical portion 16 and the connecting pipe inclination permitting portion 17. An injection molded spherical convex core 19 is pressed and inserted into the shell 13 via an O-ring 18. The core 19 slides closely against the shell 13 in a free direction as usual.
【００１７】ここにおいて、このコア１９の内周面に
は、その略上半分に円弧状ストッパ−２０を設け、その
下半分には、ゴム輪受口付短管２１の差口部２２を切欠
いた樋状受部２３が挿通される。したがって、このゴム
輪受口付短管２１の差口部２２の管端上半分は、円弧状
ストッパ−２０に当接して短管２１の挿入位置決めを
し、また、短管２１の向きをいずれの状態にしても、受
部２３は点検筒１１の内面から突出するようにして前記
汚物溜（図５の符号１０参照）を覆うようにしている。Here, on the inner peripheral surface of the core 19, an arc-shaped stopper 20 is provided in a substantially upper half thereof, and a spigot 22 of a short pipe 21 having a rubber ring receiving port is cut out in a lower half thereof. The trough-shaped receiving portion 23 is inserted. Therefore, the upper half of the end of the spigot 22 of the short pipe 21 with the rubber ring socket contacts the arc-shaped stopper 20 to position the short pipe 21 for insertion. In this state, the receiving portion 23 projects from the inner surface of the inspection tube 11 so as to cover the waste reservoir (see reference numeral 10 in FIG. 5).
【００１８】かかる状態で、コア１９に短管２１を接着
接合する。その結果、受部２３によって汚水は汚物溜を
超えて点検筒１１内へ流入し、また、受部２３が掃除具
等（不図示）を流入管へ挿入するための案内用当り部と
なる。In this state, the short pipe 21 is bonded to the core 19 by adhesive bonding. As a result, the sewage flows into the inspection tube 11 beyond the filth reservoir by the receiving portion 23, and the receiving portion 23 serves as a guide contact portion for inserting a cleaning tool or the like (not shown) into the inflow pipe.
【００１９】そして、短管２１を図１の鎖線のように、
θ≒１５°で上向きにして使用する際、コア１９の上半
分側が点検筒１１の内面から突出しようとするのを防ぐ
ため、シェル１３の球面部１６と嵌合部１４との間に間
隔ｄを設けて、上向きになったコア１９の最上部が点検
筒１１の内面より出ないようにしている。そのため、シ
ェル１３の軸長は若干大になっている。Then, the short tube 21 is connected as shown by a chain line in FIG.
In order to prevent the upper half side of the core 19 from protruding from the inner surface of the inspection tube 11 when using it upward at θ ≒ 15 °, the distance d between the spherical portion 16 of the shell 13 and the fitting portion 14 is prevented. Is provided so that the uppermost part of the core 19 facing upward does not protrude from the inner surface of the inspection tube 11. Therefore, the axial length of the shell 13 is slightly larger.
【００２０】また、このゴム輪受口付短管２１には、差
口部２２の反対側にゴム輪受口部２４を設け、リップ付
シ−ル２５を嵌着している。したがって、このゴム輪受
口部２４に塩ビ管からなる流入管（図５の符号８参照）
を挿入するだけでよい。Further, the short pipe 21 with a rubber ring socket is provided with a rubber ring socket 24 on the opposite side of the spigot 22, and a lip seal 25 is fitted thereto. Therefore, an inflow pipe made of a PVC pipe is inserted into the rubber ring receiving portion 24 (see reference numeral 8 in FIG. 5)
You just need to insert
【００２１】その結果、かかる自在継手を設けた塩ビ製
小口径マンホ−ルを用いると、施工現場において、流入
管をゴム輪受口部２４に単に挿入するだけで、約１５°
振り角の範囲で接続できると共に、シェル１３、コア１
９および短管２１は抜ける心配がない。As a result, when a small-diameter PVC manhole provided with such a universal joint is used, at the construction site, the inflow pipe is simply inserted into the rubber ring receiving portion 24, and the angle is about 15 °.
Connectable within the range of swing angle, shell 13, core 1
9 and short tube 21 do not have to worry about coming off.
【００２２】次に、第２の実施例について述べる。図２
において、第１の実施例と相違するところは、シェル１
３の球面部１６と嵌合部１４との間の間隔ｄをやめ、シ
ェル１３の軸長を縮めてコンパクトに構成している。そ
のため、コア１９の上半分を切欠き、円弧状ストッパ−
２０を点検筒１１の内面から離し、θ≒１５°で上向き
にして使用しても、コア１９の最上部が点検筒１１の内
面から出ないようにしている。Next, a second embodiment will be described. FIG.
Is different from the first embodiment in that the shell 1
3, the distance d between the spherical portion 16 and the fitting portion 14 is eliminated, and the axial length of the shell 13 is reduced to make the shell 13 compact. Therefore, the upper half of the core 19 is cut out, and an arc-shaped stopper is formed.
The uppermost part of the core 19 does not protrude from the inner surface of the inspection tube 11 even when the core 20 is used away from the inner surface of the inspection tube 11 and is turned upward at θ ≒ 15 °.
【００２３】次に、第３の実施例について述べる。図３
において、第２の実施例と相違するところは、塩ビ製小
口径マンホ−ルの流出管を下向きに設けた、いわゆるド
ロップ状マンホ−ルに適用したもので、そのため、シェ
ル１３をマンホ−ル本体１１’の成形時に一体的に設け
たものであるが、ドロップ状マンホ−ルであるため、短
管２１を水平状にして使用しても、シェル１３とコア１
９との間の空間１０’に汚水が流入することはない。Next, a third embodiment will be described. FIG.
The difference from the second embodiment is that the present invention is applied to a so-called drop-shaped manhole in which an outflow pipe of a small-diameter PVC manhole is provided downward, so that the shell 13 is provided with a manhole body. 11 'is provided integrally at the time of molding, but since it is a drop-shaped manhole, the shell 13 and the core 1 can be used even when the short pipe 21 is used horizontally.
No sewage flows into the space 10 ′.
【００２４】次に、第４の実施例について述べる。図４
において、第１の実施例と相違するところは、ゴム輪受
口を、主として取付管に用いられるタイプのゴム輪受口
２４ａを用いている。したがって、このゴム輪受口２４
ａに流入管を挿入すると、最大約５°の振り角が得られ
るので、本実施例の自在継手では全体として約２０°の
振り角が得られる。勿論、このゴム輪受口２４ａは第
２、第３の実施例にも適用できるものである。Next, a fourth embodiment will be described. FIG.
In the second embodiment, the difference from the first embodiment is that a rubber ring receiving port 24a of a type mainly used for a mounting pipe is used. Therefore, this rubber ring socket 24
When the inflow pipe is inserted into a, a maximum swing angle of about 5 ° is obtained, so that the universal joint of this embodiment can obtain a swing angle of about 20 ° as a whole. Of course, the rubber ring socket 24a can be applied to the second and third embodiments.
【００２５】次に、これらの実施例の作用を述べる。生
産工場において、点検筒１１に開口部１２を設け、シェ
ル１３に、Ｏリング１８を嵌着したコア１９を押圧・挿
入する。そして、コア１９にゴム輪受口付短管２１を挿
入して接着接合する。次いで、この自在継手を設けた点
検筒１１付の小口径マンホ−ルを施工現場に持込み、ゴ
ム輪受口部２４または２４ａに流入管を挿入して布設す
る。Next, the operation of these embodiments will be described. In a production factory, an opening 12 is provided in an inspection tube 11, and a core 19 with an O-ring 18 fitted therein is pressed and inserted into a shell 13. Then, the short tube 21 with a rubber ring socket is inserted into the core 19 and bonded and bonded. Next, a small-diameter manhole with the inspection cylinder 11 provided with the universal joint is brought to the construction site, and an inflow pipe is inserted into the rubber ring receiving portion 24 or 24a and laid.
【００２６】なお、前記実施例は、いずれも塩ビ製小口
径マンホ−ルで説明したが、本発明はこれに限らず、宅
内用または公共用塩ビ製小口径ますであってもよく、し
たがって本明細書では、これらを含めて塩ビ製小口径マ
ンホ−ル等と称している。In each of the above embodiments, a small-diameter PVC manhole has been described. However, the present invention is not limited to this, and a small-diameter PVC cavity for home use or public use may be used. In the specification, these are referred to as PVC small diameter manholes and the like.
【００２７】[0027]
【発明の効果】本発明によれば、自在継手に挿入した流
入側管（流入管または単独の短管）の差口部を、シェル
の球面部よりマンホ−ル等本体側に突出させて、シェル
とコアで段差状に形成される汚物溜を覆ったので、汚物
溜を発生せず、シェル、コアおよびＯリングは通常の慣
用された構造でよいので、抜け出る等の不都合が生じな
い。その上、突出した差口部の略上半分を切欠いて樋状
受部を設けたので、掃除具等の案内用当り部になって保
守・点検に都合がよい。According to the present invention, the spout of the inflow-side pipe (the inflow pipe or a single short pipe) inserted into the universal joint is projected from the spherical portion of the shell toward the main body such as a manhole. The shell and the core cover the filth reservoir formed in a step shape, so that no filth reservoir is generated. Since the shell, the core and the O-ring may have a usual structure, there is no inconvenience such as falling out. In addition, since a gutter-shaped receiving portion is provided by cutting out a substantially upper half of the projecting spout, it serves as a guide contact portion for a cleaning tool or the like, which is convenient for maintenance and inspection.
【図１】本発明の第１の実施例の要部断面図である。FIG. 1 is a sectional view of a main part of a first embodiment of the present invention.
【図２】本発明の第２の実施例の要部断面図である。FIG. 2 is a sectional view of a main part of a second embodiment of the present invention.
【図３】本発明の第３の実施例の要部断面図である。FIG. 3 is a sectional view of a main part of a third embodiment of the present invention.
【図４】本発明の第４の実施例の要部断面図である。FIG. 4 is a sectional view of a main part of a fourth embodiment of the present invention.
【図５】従来の試作例図である。FIG. 5 is a diagram showing an example of a conventional prototype.
１１…点検筒、１３…シェル、１８…Ｏリング、１９…
コア、２１…短管、２３…受部11 ... inspection cylinder, 13 ... shell, 18 ... O-ring, 19 ...
Core, 21 ... short tube, 23 ... receiving part
Claims (1)
継手、および、横向きまたは下向きの流出管用接合部
を、それぞれ設けた塩ビ製小口径マンホ−ル等におい
て、 前記自在継手を球面凹状シェル、球面凸状コアおよびＯ
リングで構成し、該コアに流入側管を挿入し、該流入側
管の差口側を前記シェルの球面部よりマンホ−ル等本体
側に突出させることにより、シェル・コアで形成される
汚物溜を覆うと共に、該差口側の略上半分を切欠いて樋
状受部としたことを特徴とする塩ビ製小口径マンホ−ル
等に設けた自在継手。1. A small-diameter PVC manhole provided with an upwardly inspecting cylinder, a laterally oriented inflow pipe universal joint, and a laterally or downwardly oriented outflow pipe joint, respectively. Spherical convex core and O
A waste formed by the shell core is formed by inserting an inflow-side tube into the core and projecting the spout side of the inflow-side tube from the spherical portion of the shell toward the main body such as a manhole. A universal joint provided on a small-diameter PVC manhole or the like, which covers a reservoir and has a trough-shaped receiving portion formed by cutting out a substantially upper half of the spout side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7056726A JP2789438B2 (en) | 1995-02-20 | 1995-02-20 | Universal joints installed on small-diameter PVC manholes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7056726A JP2789438B2 (en) | 1995-02-20 | 1995-02-20 | Universal joints installed on small-diameter PVC manholes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08226164A JPH08226164A (en) | 1996-09-03 |
| JP2789438B2 true JP2789438B2 (en) | 1998-08-20 |
Family
ID=13035511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7056726A Expired - Fee Related JP2789438B2 (en) | 1995-02-20 | 1995-02-20 | Universal joints installed on small-diameter PVC manholes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2789438B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200925421A (en) * | 2007-07-19 | 2009-06-16 | Max Co Ltd | Air compressor |
-
1995
- 1995-02-20 JP JP7056726A patent/JP2789438B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08226164A (en) | 1996-09-03 |
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