JPS602479A - Sampler for sludge - Google Patents

Sampler for sludge

Info

Publication number
JPS602479A
JPS602479A JP58106723A JP10672383A JPS602479A JP S602479 A JPS602479 A JP S602479A JP 58106723 A JP58106723 A JP 58106723A JP 10672383 A JP10672383 A JP 10672383A JP S602479 A JPS602479 A JP S602479A
Authority
JP
Japan
Prior art keywords
valve
sludge
pot
hanging
sludge collector
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.)
Granted
Application number
JP58106723A
Other languages
Japanese (ja)
Other versions
JPS6311230B2 (en
Inventor
山本 治一郎
森里 求
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tonen General Sekiyu KK
Original Assignee
Toa Nenryo Kogyyo KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toa Nenryo Kogyyo KK filed Critical Toa Nenryo Kogyyo KK
Priority to JP58106723A priority Critical patent/JPS602479A/en
Publication of JPS602479A publication Critical patent/JPS602479A/en
Publication of JPS6311230B2 publication Critical patent/JPS6311230B2/ja
Granted legal-status Critical Current

Links

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 本発明は原油タンク内に堆積したロンドワックス等を含
有するスラッジを採取するためのスラッジ採取器に関す
るものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sludge collector for collecting sludge containing rondo wax and the like deposited in a crude oil tank.

原油を貯蔵する原油タンクにおいては原油中に含まれて
いる水泥外が時間経過と共に沈降し、原油タンク底板上
に堆積してスラッジ層を形成せしめる。斯るスラッジ層
を構成する成分及びその割合は原油タンク内に貯蔵され
る原油によって様々に異なるものである。従って、原油
タンクの保守管理の点で、又は石油PII製プラントの
運転条件設定の点で、更には原油に対する財産上の評価
の点で原油タンク内に堆積したスラッジの性状を正確に
把握することが重要なことであり、その為にスラッジを
原油タンク内から採取することがしばしば必要とされた
In a crude oil tank that stores crude oil, water sludge contained in the crude oil settles over time and accumulates on the bottom plate of the crude oil tank, forming a sludge layer. The components constituting the sludge layer and their proportions vary depending on the crude oil stored in the crude oil tank. Therefore, it is important to accurately understand the properties of the sludge accumulated in crude oil tanks in terms of maintenance management of crude oil tanks, setting of operating conditions of petroleum PII production plants, and even property evaluation of crude oil. is important, and for this reason it was often necessary to extract sludge from within crude oil tanks.

しかしながら、現在原油タンク内のスラッジを採取する
器具は数多くは提案されておらず、例えば第1図に図示
するように、従来の堆積スラッジ採取器は直径が概略3
.8鑞、長さ50cTrLの円筒状パイプ2の先端に、
直径が概略606rIL、長さ90確の幾分先端部4が
内方に屈曲した底部バイブロを接続した構造のスラッジ
採取器1が広く使用されている。斯る従来のスラッジ採
取器1は使用に当り、上部に取付けた取手8にローブ1
oを結び原油タンク内へと垂下し、スラッジ採取器1を
スラッジ層内へと自重により進入させ、スラッジが円筒
状パイプ2内に進入した時点にお℃・てローブを引き上
げ採取器1を回収するものであるが、該スラッジ採取器
1の底部バイブロには底蓋が付設されていないために採
取器の引き上げ時に採取器中の試料が抜は落ち、特(・
τスラッジ層の上層を形成する沈降して間もない軟いソ
フトワックスの採取は不可能であった。又、スラッジ層
の下層を形成する長期の堆積にて固くなったハードワッ
クスの採取は可能ではあるが、特に原油タンク内に原油
が多量に存在しているときはその採取作業が難しく熟練
を要し作業能率が悪いという欠点があった。
However, at present, many devices for collecting sludge in crude oil tanks have not been proposed. For example, as shown in Figure 1, a conventional accumulated sludge collector has a diameter of approximately 3.
.. 8. At the tip of the cylindrical pipe 2 with a length of 50 cTrL,
A sludge collector 1 having a diameter of approximately 606 rIL and a length of 90 cm and having a structure in which a bottom vibro with a somewhat inwardly bent tip 4 is connected is widely used. In use, such a conventional sludge extractor 1 has a lobe 1 attached to a handle 8 attached to the upper part.
o and hangs down into the crude oil tank, and the sludge collector 1 enters into the sludge layer by its own weight, and when the sludge enters the cylindrical pipe 2, the lobe is pulled up at °C and the collector 1 is collected. However, since the bottom vibro of the sludge collector 1 is not equipped with a bottom cover, the sample in the collector may fall out when the collector is pulled up, causing special problems.
It was impossible to collect the recently settled soft wax that forms the upper layer of the τ sludge layer. In addition, although it is possible to collect the hard wax that forms the lower layer of the sludge layer due to long-term accumulation, it is difficult to collect and requires skill, especially when there is a large amount of crude oil in the crude oil tank. However, it had the disadvantage of poor work efficiency.

従って、本発明の目的は開閉弁を底部に(+’、i+え
、ソフトワックスの採取をも可能としたスラッジ採取器
を提供することである。開閉弁は、例えば原油タンクの
屋根上にて作業している作業者によって遠隔的に操作す
ることができ、本発明に係るスラッジ採取器の作業性を
容易にするという特徴を有する。
Therefore, it is an object of the present invention to provide a sludge collector that has an on-off valve at the bottom (+', i+) and also makes it possible to collect soft wax. The sludge extractor according to the present invention has the feature of being able to be operated remotely by a worker and facilitating the workability of the sludge extractor according to the present invention.

本発明の他の目的はスラッジの採取作業に熟練を要せず
個人差なく確実に行なうことができ、作業能率を著しく
向上せしめるスラッジ採取器を提供することである。
Another object of the present invention is to provide a sludge collector which does not require skill and can be reliably carried out regardless of individual differences, thereby significantly improving work efficiency.

次に、本発明に係るスラッジ採取器を図面に則して詳し
く説明する。
Next, the sludge collector according to the present invention will be explained in detail with reference to the drawings.

第4図には本発明に係るスラッジ採取器20の一実施態
様が図示されている。スラッジ採取器20は円筒状をし
たポット部22と、該ポット部22の下端に一体的に取
付けられた弁座部24とを具備する。弁座部24は、限
定されるものではないが、本実施態様に例示されるよう
に、ポット部22より幾分大ぎい直径を有した円筒形状
とされ、ポット部22と同中心にて配置されている。従
って、ポット部22と弁座部24との連結部26は、後
で詳しく説明される開閉弁28が座着する環状肩部を形
成する。
FIG. 4 illustrates one embodiment of a sludge collector 20 according to the present invention. The sludge collector 20 includes a cylindrical pot part 22 and a valve seat part 24 integrally attached to the lower end of the pot part 22. Although the valve seat part 24 is not limited, as illustrated in this embodiment, the valve seat part 24 has a cylindrical shape having a diameter somewhat larger than that of the pot part 22, and is arranged concentrically with the pot part 22. has been done. Therefore, the connection part 26 between the pot part 22 and the valve seat part 24 forms an annular shoulder part on which an on-off valve 28, which will be explained in detail later, is seated.

開閉弁28は、第2図及び第3図に最もよく図示される
ように、概略円形状をした弁&6oを崩する。該弁板3
0はその一部に支持アーム32を備え、該支持アーム5
2の先端軸受部34は弁座部24の円筒状壁を一部切欠
いて形成された開口66内に配置される。該軸受部34
は前記開口36を横断する態様で弁座部24の鵬に固定
された横軸38に嵌装される。斯る構成によって、弁板
30は横軸38を中心として、第2図にて時計方向に回
転可能とされ、第4図に図示されるようKM状肩部26
に座着し、ポット部22の下部開口部を閉塞することが
できる。
The on-off valve 28, as best illustrated in FIGS. 2 and 3, collapses into a generally circular valve &6o. The valve plate 3
0 includes a support arm 32 in a part thereof, and the support arm 5
The second tip bearing portion 34 is disposed within an opening 66 formed by cutting out a portion of the cylindrical wall of the valve seat portion 24 . The bearing portion 34
is fitted onto a horizontal shaft 38 fixed to a hook of the valve seat portion 24 so as to cross the opening 36 . With this configuration, the valve plate 30 is rotatable in the clockwise direction in FIG. 2 about the horizontal axis 38, and the KM-shaped shoulder 26 as shown in FIG.
The lower opening of the pot portion 22 can be closed.

弁板30の下面には突起40が形成され、一方弁座部2
4の壁には、開閉弁2日が第2図に図示されるようなポ
ット開放位置にあるときに、前記突起40の突入を許容
するための開口42が形成される。突起40の先端には
ゴムバンドのような弾性部材44の一端が固定され、又
弥性部利44の他端はポット部22の外壁部に設けた取
付フック46に取付けられ、そして開閉弁28は弾性部
材44によってポット開放位置(第2図の状態)K付勢
されるように構成される。
A protrusion 40 is formed on the lower surface of the valve plate 30, while the valve seat portion 2
An opening 42 is formed in the wall of 4 to allow the protrusion 40 to enter when the on-off valve 2 is in the pot open position as shown in FIG. One end of an elastic member 44 such as a rubber band is fixed to the tip of the projection 40, and the other end of the elastic member 44 is attached to a mounting hook 46 provided on the outer wall of the pot section 22, and the opening/closing valve 28 is configured to be biased to the pot open position (the state shown in FIG. 2) K by the elastic member 44.

一方、弁板30の上面にはフック48が設けられ、該フ
ック48゛に開閉弁作動ロープ50の一端が取付けられ
る。開閉弁作動ロープ50の他端はポット部22の内壁
に設けた案内7ツク52を通って上方へと導かれ、吊下
げ棒54の孔付頭部56に接続される。該開閉弁作動ロ
ープ50は、吊下げ棒54のフック部58をポット部2
2の上端に取付けられた取手60に引掛け、スラッジ採
取器20を吊下げた状態に保持した場合に(第2図の状
態)、吊下げ棒54の孔付頭部56と弁板30のフック
48との間にて緊張されず施緩した状態となるように寸
法取りされる。
On the other hand, a hook 48 is provided on the upper surface of the valve plate 30, and one end of an on-off valve operating rope 50 is attached to the hook 48'. The other end of the on-off valve operating rope 50 is guided upward through a guide 72 provided on the inner wall of the pot portion 22 and connected to a holed head portion 56 of a hanging rod 54. The on-off valve operating rope 50 connects the hook portion 58 of the hanging rod 54 to the pot portion 2.
When the sludge collector 20 is hung on the handle 60 attached to the upper end of the hanging rod 54 (the state shown in FIG. 2), the holed head 56 of the hanging rod 54 and the valve plate 30 The dimensions are taken so that it is in a relaxed state without tension between it and the hook 48.

吊下げ棒54の孔付頭部56にはスラッジ採取器20を
原油タンク内に垂下するための垂下用ロープ62の一端
が接続される。更に、吊下げ棒54の孔付頭部56と採
取器の取手60との間には、好ましくは細いロープが使
用される開閉弁作動ロープ50が万一切断したときにス
ラッジ採取器20が原油タンク内に落下するのを防止す
るために垂下用ロープ62と同寸法の強度の大きい予4
10−プ64が設けられる。該予備ロープ64は、第4
図のように吊下げ棒54が取手60から外れた状態にお
いて開閉弁作動ロープ50が緊張状態となるのを訪客し
ないような十分の長さとされる。
One end of a hanging rope 62 for hanging the sludge extractor 20 into the crude oil tank is connected to the holed head 56 of the hanging rod 54. Furthermore, a thin rope is preferably used between the perforated head 56 of the hanging rod 54 and the handle 60 of the collector.If the on-off valve operating rope 50, which is preferably thin, breaks, the sludge collector 20 will be exposed to crude oil. In order to prevent it from falling into the tank, a strong rope 4 with the same dimensions as the hanging rope 62 is installed.
A 10-p 64 is provided. The reserve rope 64 is
As shown in the figure, the length is sufficient to prevent the opening/closing valve operating rope 50 from becoming under tension when the hanging rod 54 is removed from the handle 60.

次に、本発明に係るスラッジ採取器20の作動について
説明する。
Next, the operation of the sludge collector 20 according to the present invention will be explained.

スラッジの採取に当って、作業者は第2図に図示される
ようにスラッジ採取器20を設定する。
To collect sludge, an operator sets the sludge collector 20 as shown in FIG.

即ち、垂下用ロープ62が接続された吊下げ棒54のフ
ック58をスラッジ採取器20の取手60に掛け、原油
タンクの屋根上から適当な開口、例えば浮屋根式タンク
の場合にはルーフ支柱用の開口を通して原油タンク内へ
と垂下される。この時開閉弁28は弾性部材44の働き
によって、第2図に図示されるようなポット開放位置へ
と開かれている。
That is, the hook 58 of the hanging rod 54 to which the hanging rope 62 is connected is hung on the handle 60 of the sludge collector 20, and an appropriate opening is opened from the roof of the crude oil tank, for example, for a roof support in the case of a floating roof tank. It is suspended into the crude oil tank through the opening in the tank. At this time, the on-off valve 28 is opened to the pot open position as shown in FIG. 2 by the action of the elastic member 44.

垂下用ロープ62を操作することによってスラッジ採取
器20はスラッジ層へと第2図に示される如き直立状態
にて到達すると、スラッジ採取器20はその重量によっ
て(例えばポット部を肉厚5mm、内径38朋、長さ5
00龍のステンレス鋼にて作製し、又弁座部を肉厚3闘
、内径44mm、長さ50順の黄銅にて作製した場合に
は概略5 kg程度の重量となる)、スラッジ層内へと
めり込む。
By operating the hanging rope 62, the sludge collector 20 reaches the sludge layer in an upright position as shown in FIG. 38 mm, length 5
If the valve seat is made of 00 stainless steel and the valve seat is made of brass with a wall thickness of 3 mm, an inner diameter of 44 mm, and a length of 50 mm, the weight will be approximately 5 kg), into the sludge layer. Get absorbed in it.

スラッジ採取器20のスラッジ層への進入を容易とする
ために弁座部24の先端部70は刃先状に形成すること
が好ましく、又スラッジが弁座部24へと進入する際開
閉弁28部への進入を防止するために、第2図及び第5
図に図示されるような半月状のカバー板72を開閉弁2
8の下方位置に設けることが好ましい。
In order to facilitate the entry of the sludge collector 20 into the sludge layer, the tip 70 of the valve seat 24 is preferably formed into a cutting edge shape, and when the sludge enters the valve seat 24, the opening/closing valve 28 is Figure 2 and Figure 5.
Opening/closing valve 2 with half-moon-shaped cover plate 72 as shown in the figure
It is preferable to provide it at a position below 8.

垂下用ロープ62はスラッジ採取器20がスラッジ層に
進入する間は常に緊張状態を保持し、採取器20を直立
状態に維持するように操作される。
The hanging rope 62 is maintained taut and operated to maintain the sludge collector 20 in an upright position at all times as the sludge collector 20 enters the sludge layer.

これにより、ポット部22内にはスラッジ層を縦の型で
採取することができる。又、ポット部22にはその上部
に幅2m、長さ200關の縦割74を直径方向に対向し
て形成し且つ該縦割74の下方には直径2触の穴を概略
50πm間隔にて抄数飼穿設し、ポット部22内に採取
されたスラッジ以外の原油をポット部外へと排出するこ
とが好ましい。この構成により採取の目的にがなった堆
積スラッジ層のみが採取できる。
Thereby, the sludge layer can be collected in the pot section 22 in a vertical mold. In addition, the pot portion 22 has vertical divisions 74 having a width of 2 m and a length of 200 mm facing each other in the diametrical direction at the upper part thereof, and holes with a diameter of 2 mm are spaced approximately 50 m apart below the vertical divisions 74. It is preferable that a hole is provided in the pot section 22 to discharge the crude oil other than the sludge collected in the pot section 22 to the outside of the pot section. With this configuration, only the accumulated sludge layer that is targeted for collection can be collected.

所定のスラッジがポット部22内に進入した点にて垂下
用ロープ62をゆるめ吊下げ棒54のフック58をスラ
ッジ採取器20の取手60から外す。次で垂下用ロープ
62を引き上げると、開閉弁作動ロープ50も引き上げ
られる。更に、垂下用ロープ62を引っ張ることにより
、開閉弁28は開閉弁作動ロープ50によって、第2図
にて時計方向へと弾性部材44の力に抗して回動され、
第4図に図示されるように現状肩部26に座着し、ポッ
ト部22の下端開口部を閉鎖する。更に、垂下用ロープ
62を引っ張ることによって、スラッジ採取器20は該
垂下用ロープ62及び開閉弁作動ロープ、62を介して
上方向へと引上げられる。
At the point where a predetermined amount of sludge has entered the pot portion 22, the hanging rope 62 is loosened and the hook 58 of the hanging rod 54 is removed from the handle 60 of the sludge collector 20. Next, when the hanging rope 62 is pulled up, the opening/closing valve operating rope 50 is also pulled up. Furthermore, by pulling the hanging rope 62, the on-off valve 28 is rotated clockwise in FIG. 2 against the force of the elastic member 44 by the on-off valve operation rope 50.
As shown in FIG. 4, the pot part 22 is seated on the shoulder part 26 and the lower end opening of the pot part 22 is closed. Furthermore, by pulling the hanging rope 62, the sludge collector 20 is pulled upward via the hanging rope 62 and the on-off valve operation rope 62.

スラッジ採取器20はその引上げ工程時に、ポット部2
2の底部が開閉弁28によって閉鎖されているので、ポ
ット部22内に採取したスラッジLがポット部外へと漏
出することがない。
During the pulling process, the sludge collector 20
Since the bottom of the pot 22 is closed by the on-off valve 28, the sludge L collected in the pot 22 will not leak out of the pot.

以上の如くに構成される本発明に係るスラッジ採取器は
、垂下用ロープで原油タンク内へと吊下げて挿入し、ス
ラッジ層に達した後は、単に垂下用ロープを施緩させな
いように採取器のスラッジ層内への進入速度に合せてゆ
るめて行き、次で垂下用ロープを施緩させた後適当な速
度で垂下用ロープを引き上げることによってスラッジが
採取できるものであり、採取器の操作は極めて簡単で、
個人差なく所望のスラッジを適正に採取し得るという作
用効果を有する。
The sludge collector according to the present invention configured as described above is suspended and inserted into a crude oil tank using a hanging rope, and after reaching the sludge layer, the sludge collector is simply collected without loosening the hanging rope. The sludge can be collected by loosening the vessel according to the speed at which it enters the sludge layer, then loosening the hanging rope, and then pulling up the hanging rope at an appropriate speed. is extremely easy,
It has the effect of being able to properly collect desired sludge regardless of individual differences.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は従来のスラッジ採取器の縦断面図である。 第2図は本発明に係るスラッジ採取器の縦断面図である
。 第3図は第1図の線■−■に泊って取った断面図である
。 第4図はスラッジ採取後の第2図のスラッジ採取器の作
動状態を表わす縦断面図である。 第5図は第2図のスラッジ採取器の底面図である。 20:スラッジ採取器 22:ポット部 24:弁座部 28:開閉弁 30:弁 板 44:弾性部材 50:開閉弁作動ロープ 54:吊下げ棒 60:取 手 62;垂下用ロープ 64:予備ロープ 同 倉 橋 暎Cし)
FIG. 1 is a longitudinal sectional view of a conventional sludge extractor. FIG. 2 is a longitudinal sectional view of the sludge extractor according to the present invention. FIG. 3 is a cross-sectional view taken along the line ■--■ in FIG. FIG. 4 is a longitudinal sectional view showing the operating state of the sludge collector of FIG. 2 after sludge collection. FIG. 5 is a bottom view of the sludge extractor of FIG. 2. 20: Sludge collector 22: Pot section 24: Valve seat section 28: Opening/closing valve 30: Valve plate 44: Elastic member 50: Opening/closing valve operating rope 54: Hanging rod 60: Handle 62; Hanging rope 64: Spare rope Kurahashi Akira C)

Claims (1)

【特許請求の範囲】 1)上端に取手を備えた円筒状のスラッジ採取用ポット
部と、前記ポット部の下端に一体的に取付けられた弁座
部と、前記弁座部内に配設され前記ポット部下方開口部
を閉鎖するための開閉弁と、前記開閉弁に作用し、該開
閉弁が常時は前記ポット下方開口部を閉鎖しないように
した弾性部材と、前記取手に脱着自在に連結される吊下
げ棒と、一端は前記開閉弁に連結され、他端は前記吊下
げ棒に連結された開閉弁を閉鎖するための路間弁作動ロ
ープとを具備することを特徴とするスラッジ採取器。 2)ポット部はその上部に細長の縦割を有し、該縦割の
下方に複数個の細い穴を有して成る特許請求の範囲第1
項記載のスラッジ採取器。 5)弁座部はポット部より幾分大きい直径を有した円筒
形状の部材であって、該部材の先端は刃先形状に形成さ
れて成る特許請求の範囲第1項記載のスラッジ採取器。 4)開閉弁は概略円形状をした弁板と、該弁板の一部に
連結された支持アームとを有し、該支持アームが弁座部
に固定された横軸に枢動自在に取付けられて成る特許請
求の範囲第3項記載のスラッジ採取器。 5)弾性部材はゴムバンドであって、弁板の下面から、
弁座部の壁を貫通し、ポット部の外周部へと延在して設
けられて成る特許請求の範囲第4項記載のスラッジ採取
器。 6)吊下げ棒は一端に開閉弁作動ロープ及びスラッジ採
取器自体を垂下する垂下用ロープが連結される孔付頭部
を有し、他端には取手に掛止するためのフックが形成さ
れて成る特許請求の範囲第1項記載のスラッジ採取器。
[Scope of Claims] 1) A cylindrical sludge collection pot portion with a handle at its upper end; a valve seat portion integrally attached to the lower end of the pot portion; an on-off valve for closing the lower opening of the pot; an elastic member that acts on the on-off valve so that the on-off valve does not normally close the lower opening of the pot; and an elastic member that is detachably connected to the handle. A sludge collector comprising: a hanging rod; one end connected to the on-off valve; and the other end connected to the hanging rod; a road valve operating rope for closing the on-off valve connected to the hanging rod. . 2) The pot part has an elongated vertical division in its upper part, and a plurality of narrow holes below the vertical division.
Sludge extractor as described in section. 5) The sludge collector according to claim 1, wherein the valve seat portion is a cylindrical member having a diameter somewhat larger than that of the pot portion, and the tip of the member is formed in the shape of a cutting edge. 4) The on-off valve has a generally circular valve plate and a support arm connected to a part of the valve plate, and the support arm is pivotally attached to a horizontal shaft fixed to the valve seat. A sludge collector according to claim 3, comprising: 5) The elastic member is a rubber band, and from the bottom surface of the valve plate,
The sludge collector according to claim 4, which is provided so as to penetrate the wall of the valve seat part and extend to the outer periphery of the pot part. 6) The hanging rod has a head with a hole at one end to which the opening/closing valve operating rope and the hanging rope for hanging the sludge collector itself are connected, and the other end has a hook for hanging on the handle. A sludge collector according to claim 1, comprising:
JP58106723A 1983-06-16 1983-06-16 Sampler for sludge Granted JPS602479A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58106723A JPS602479A (en) 1983-06-16 1983-06-16 Sampler for sludge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58106723A JPS602479A (en) 1983-06-16 1983-06-16 Sampler for sludge

Publications (2)

Publication Number Publication Date
JPS602479A true JPS602479A (en) 1985-01-08
JPS6311230B2 JPS6311230B2 (en) 1988-03-12

Family

ID=14440863

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58106723A Granted JPS602479A (en) 1983-06-16 1983-06-16 Sampler for sludge

Country Status (1)

Country Link
JP (1) JPS602479A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5374391A (en) * 1990-02-13 1994-12-20 Honda Giken Kogyo Kabushiki Kaisha Molded ceramic articles and production method thereof
US5443615A (en) * 1991-02-08 1995-08-22 Honda Giken Kogyo Kabushiki Kaisha Molded ceramic articles

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5688136U (en) * 1979-12-11 1981-07-14
JPS57120231U (en) * 1981-01-22 1982-07-26

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5688136U (en) * 1979-12-11 1981-07-14
JPS57120231U (en) * 1981-01-22 1982-07-26

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5374391A (en) * 1990-02-13 1994-12-20 Honda Giken Kogyo Kabushiki Kaisha Molded ceramic articles and production method thereof
US5590388A (en) * 1990-02-13 1996-12-31 Honda Giken Kogyo Kabushiki Kaisha Molded ceramic articles and production method thereof
US5443615A (en) * 1991-02-08 1995-08-22 Honda Giken Kogyo Kabushiki Kaisha Molded ceramic articles

Also Published As

Publication number Publication date
JPS6311230B2 (en) 1988-03-12

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