JPH0972423A - Bead for oiling hole - Google Patents
Bead for oiling holeInfo
- Publication number
- JPH0972423A JPH0972423A JP22680395A JP22680395A JPH0972423A JP H0972423 A JPH0972423 A JP H0972423A JP 22680395 A JP22680395 A JP 22680395A JP 22680395 A JP22680395 A JP 22680395A JP H0972423 A JPH0972423 A JP H0972423A
- Authority
- JP
- Japan
- Prior art keywords
- bead
- bolt
- oil hole
- hole
- oil
- 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
Links
Landscapes
- Gasket Seals (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、オイル穴用ビード
に関し、更に詳細には金属薄板からなるシリンダヘッド
ガスケットのオイル穴に設けるシール用ビードに関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil hole bead, and more particularly to a sealing bead provided in an oil hole of a cylinder head gasket made of a thin metal plate.
【0002】[0002]
【従来の技術】内燃機関のシリンダヘッドとシリンダボ
ディとの間に設けるシリンダヘッドガスケットは、燃焼
室を形成するシリンダ穴の他、潤滑用オイル、冷却水、
ヘッドボルト、プッシュロッドなどが通る各種の穴が多
数設けられている。そして、機関の高出力化に伴い、金
属薄板からなる金属ガスケットが、一般に高出力用に使
用されるディーゼルエンジンは元より、ガソリンエンジ
ンにおいても、多く使用されるに至っている。2. Description of the Related Art Cylinder head gaskets provided between a cylinder head and a cylinder body of an internal combustion engine include a cylinder hole forming a combustion chamber, lubricating oil, cooling water,
There are many holes for head bolts and push rods. With the increase in output of engines, metal gaskets made of thin metal plates have come to be widely used not only for diesel engines generally used for high output, but also for gasoline engines.
【0003】金属ガスケットのシールは、通常、シール
する穴の周囲を取り巻き、金属板をループ状に膨出させ
たビードを設け、ガスケットを締め付けてビードを圧縮
する際に生じる反力によってガスケットの金属板間をデ
ッキ面に押し付けてシールするものである。周知のよう
に、多気筒直列型内燃機関のシリンダヘッドとシリンダ
ボディとの接合面には、シリンダ穴が横一列に配置さ
れ、その周囲に、前記各種の穴が配置されている。そし
て、ヘッドボルトは、高圧となるシリンダ穴の周囲に、
より均一な締め付け力を及ぼすように配置されるため、
オイル穴や水穴などの液体穴は、ヘッドボルトに対して
偏在した位置となり、液体穴に設けたビードの締め付け
力は均一とはなりにくいという問題がある。[0003] The seal of a metal gasket is usually provided around a hole to be sealed with a bead in which a metal plate is bulged in a loop shape, and the metal of the gasket is pressed by a reaction force generated when the gasket is tightened to compress the bead. The space between the boards is pressed against the deck surface for sealing. As is well known, cylinder holes are arranged in a horizontal row on the joint surface between a cylinder head and a cylinder body of a multi-cylinder in-line internal combustion engine, and the various holes are arranged around the cylinder holes. And, the head bolt is around the cylinder hole that becomes high pressure,
Since it is arranged to exert a more uniform tightening force,
The liquid holes such as oil holes and water holes are located unevenly with respect to the head bolts, and there is a problem that the tightening force of the beads provided in the liquid holes is not uniform.
【0004】また機関を軽量化して高出力とするため、
近年、アルミニウム合金製のシリンダヘッドが使用され
るようになった。そのため、シリンダヘッドは、前記ビ
ードの反力を受け、中央部が反り上がる変形力を受け易
くなり、液体穴に設けたビードの締め付け力が更に不均
一になる傾向にある。ところで、前記オイル通路はシリ
ンダヘッドの上部に設ける動弁機構の潤滑用に設けるも
のであり、シリンダボディ及びシリンダヘッドに直接関
係する部分が少ない関係上、従来から機関のコーナー部
や、本体から突設させた部分に設けることが多い。した
がって、ヘッドボルトによる締め付け力が不均一になる
傾向が水穴より著しくなる。Further, in order to reduce the weight of the engine and to provide high output,
In recent years, aluminum alloy cylinder heads have come into use. Therefore, the cylinder head is likely to be subjected to the reaction force of the bead and the deformation force of the center portion thereof to be warped, and the tightening force of the bead provided in the liquid hole tends to be more uneven. By the way, the oil passage is provided for lubrication of the valve mechanism provided in the upper part of the cylinder head, and since there are few parts directly related to the cylinder body and the cylinder head, it has hitherto been projected from the corner part of the engine or the main body. It is often installed in the part where it is installed. Therefore, the tendency that the tightening force by the head bolt becomes uneven becomes more remarkable than that of the water hole.
【0005】そこで、ボルトの締め付け力が及び易いよ
うに、オイル通路をヘッドボルトの近くに配置し、その
ためシリンダヘッドガスケットのオイル穴用ビードが、
ボルト穴と干渉しないように、オイル穴用ビードを、ボ
ルト穴を取り巻くように形成することが従来から行われ
ている。この共通ビードによるシール性能を向上させる
ため、本出願人は、ビードのばね定数を、ボルト穴側よ
りオイル穴側を小さい値とすることを考案(実開平2−
101061号)した。Therefore, the oil passage is arranged near the head bolt so that the tightening force of the bolt can be easily exerted, so that the oil hole bead of the cylinder head gasket is
Conventionally, the oil hole beads are formed so as to surround the bolt holes so as not to interfere with the bolt holes. In order to improve the sealing performance by this common bead, the applicant of the present invention has devised to set the bead spring constant to a smaller value on the oil hole side than on the bolt hole side.
101061).
【0006】[0006]
【発明が解決しようとする課題】ところで内燃機関、特
に自動車用内燃機関は、周知のとおり市場から高性能化
を追求する要請があり、常に改良が加えられている。そ
れに伴い、シリンダヘッドガスケットのオイル穴のシー
ルに対しても、更に高性能化が要求されるに至ってい
る。By the way, as is well known, there is a demand from the market for higher performance of internal combustion engines, especially automobile internal combustion engines, and improvements are constantly being made. Along with this, higher performance is also required for the seal of the oil hole of the cylinder head gasket.
【0007】本発明は、以上の問題に着目してなされた
ものであり、オイル穴用ビードをボルト穴用ビードと一
体的に形成する金属シリンダヘッドガスケットにおい
て、シール性能を更に向上させたオイル穴用ビードを提
供することを解決しようとする課題としている。The present invention has been made in view of the above problems. In a metal cylinder head gasket in which a bead for an oil hole is integrally formed with a bead for a bolt hole, an oil hole having a further improved sealing performance is provided. Providing beads for use is a challenge to solve.
【0008】[0008]
【課題を解決するための手段】以上の課題を達成するた
めの本発明のオイル穴用ビードの構成は、シリンダボデ
ィからシリンダヘッドに通じるオイル通路を、ヘッドボ
ルトの近くの機関外周側に形成した内燃機関用の金属シ
リンダヘッドガスケットに、前記オイル通路用のオイル
穴と前記ヘッドボルト用のボルト穴を形成し、これらの
穴の周囲を取り巻くビードを、両方の穴に共通する1つ
のビードによって形成し、このビードの幅方向断面形状
を、オイル穴側の立上り角よりボルト穴側の立上り角を
小さく、且つボルト穴側の頂部幅をオイル穴側の頂部幅
より狭く形成したものである。In order to achieve the above object, the oil hole bead according to the present invention has an oil passage extending from the cylinder body to the cylinder head on the outer peripheral side of the engine near the head bolt. An oil hole for the oil passage and a bolt hole for the head bolt are formed in a metal cylinder head gasket for an internal combustion engine, and beads surrounding the holes are formed by one bead common to both holes. However, the cross-sectional shape of the bead in the width direction is formed such that the rising angle on the bolt hole side is smaller than the rising angle on the oil hole side, and the top width on the bolt hole side is narrower than the top width on the oil hole side.
【0009】前記ビードのオイル穴側の頂部が、ボルト
穴側の頂部より幅広となるように形成する手段として、
ビード幅及びビード高さを一定とし、ビード幅方向両側
のビード立ち上がり角を調節して行うことができる。し
かしながら、本発明はこれに限定されず、ビード幅やビ
ード高さを変化させるなど、他の手段によって行うこと
もできる。As means for forming the bead on the oil hole side so as to be wider than the bolt hole side,
The bead width and the bead height can be kept constant, and the bead rising angles on both sides in the bead width direction can be adjusted. However, the present invention is not limited to this, and may be performed by other means such as changing the bead width or the bead height.
【0010】オイル穴側及びボルト穴側のビードの前記
頂部形状と立上り角との変化には特に限定はなく、段状
に変化させてもよいが、一般には、ボルト穴側とオイル
穴側との間で連続的に変化させるなど、徐々に変化させ
るようにすることが好ましい。また、前記ビードの断面
形状も特に限定はないが、圧縮された際に、オイル穴側
のビードの頂部が谷状に折れ曲がり、逆W形となり易く
するために、台形状、又はより台形に近い形状とするこ
とができる。There is no particular limitation on the change in the apex shape and the rising angle of the beads on the oil hole side and the bolt hole side, and they may be changed stepwise, but in general, the bead hole side and the oil hole side are changed. It is preferable to gradually change, for example, continuously changing between. Also, the cross-sectional shape of the bead is not particularly limited, but when compressed, the top of the bead on the oil hole side bends in a valley shape and is easily trapezoidal or more trapezoidal so as to easily form an inverted W shape. It can be shaped.
【0011】1つのビードで前記オイル穴とボルト穴と
を取り巻き、このビードの幅方向断面形状を、ボルト穴
側の立上り角よりオイル穴側の立上り角を大きく、且つ
オイル穴側の頂部幅がボルト穴側の頂部幅より広く形成
した前記手段は、より低い締付け荷重でビードが容易に
逆W型に変形することで、復元する力及び元に戻る復元
量が増大する。The oil hole and the bolt hole are surrounded by one bead, and the cross-sectional shape in the width direction of the bead has a rising angle on the oil hole side larger than a rising angle on the bolt hole side and a top width on the oil hole side. With the means formed wider than the top width on the bolt hole side, the bead is easily deformed into an inverted W shape with a lower tightening load, so that the restoring force and the restoring amount to be restored are increased.
【0012】[0012]
【発明の実施の形態】以下添付の図面を参照し、実施例
により本発明を具体的に説明する。図1,2に示す実施
例1のオイル穴用ビード1は、単板からなるシリンダヘ
ッドガスケット(以下単にガスケットと略称する)2に
形成したオイル穴3とボルト穴4との両方を囲むように
設けられている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the accompanying drawings. The oil hole bead 1 of the first embodiment shown in FIGS. 1 and 2 surrounds both an oil hole 3 and a bolt hole 4 formed in a cylinder head gasket (hereinafter simply referred to as a gasket) 2 made of a single plate. It is provided.
【0013】前記オイル穴3は、ガスケット2の外周5
のコーナー部に設けられており、ボルト穴4に対しシリ
ンダ穴6の反対側に位置している。シリンダ穴6の周囲
には複数個のボルト穴(ボルト穴4以外は図示せず)が
配置されている。なお、図1に示す符号7は水穴であ
り、8はシリンダ穴用ビード、9は水穴用ビードであ
る。The oil hole 3 has an outer periphery 5 of the gasket 2.
Is provided at the corner portion of the cylinder and is located on the opposite side of the cylinder hole 6 with respect to the bolt hole 4. A plurality of bolt holes (other than the bolt holes 4 are not shown) are arranged around the cylinder hole 6. Reference numeral 7 shown in FIG. 1 is a water hole, 8 is a cylinder hole bead, and 9 is a water hole bead.
【0014】そしてオイル穴用ビード1は、図2に示す
ように、ビード幅W及び高さhを一定の台形状に形成し
ている。そして、ボルト穴4側Aの立上り角θ1 をオイ
ル穴側Bの立上り角θ2 より小さく(θ1 <θ2 )形成
し、ボルト穴側Aの頂部の幅t1 を、オイル穴側Bの頂
部の幅t2 より狭く(幅t1 <t2 )なるように形成し
た。The oil hole bead 1 is formed in a trapezoidal shape having a constant bead width W and height h, as shown in FIG. Then, the rising angle θ 1 of the bolt hole 4 side A is formed smaller than the rising angle θ 2 of the oil hole side B (θ 1 <θ 2 ), and the width t 1 of the top of the bolt hole side A is set to the oil hole side B. Was formed so as to have a width (width t 1 <t 2 ) narrower than the top width t 2 .
【0015】台形ビードの各部寸法は、対象とする内燃
機関の仕様によって一定しないが、通常のシリンダヘッ
ドガスケットの場合、一般にWが1.5〜3mm、hが
0.2〜1mm、w1 が1.5mm前後、t1 が0.5
〜1.0mm、w2 が2〜3mm、t2 が1.0〜2.
0mm程度の値とすることが好ましい。一般に、波形、
円弧などの幅方向断面形状のビードを圧縮すると、頂部
が反対側に折れて逆W形に変形するが、以上のように形
成したオイル穴用ビード1の場合には、オイル穴3側の
頂部t2 が幅広に形成されているので屈曲し易くなり、
図3に示すように容易に逆W形となる。この逆W形を更
に圧縮するとビード幅W全体により均一に変形が進み、
前記立上り角が小さい場合より均等な反力が得られるよ
うになり、より弱い圧縮力でビード幅W全体により均等
な面圧を発生させることができる。なお図3に示す符号
10はシリンダヘッド、11はシリンダボディ、12はシリン
ダヘッド10及びシリンダボディ11に穿設したオイル通路
である。The dimensions of each part of the trapezoidal bead are not constant depending on the specifications of the target internal combustion engine, but in the case of an ordinary cylinder head gasket, W is generally 1.5 to 3 mm, h is 0.2 to 1 mm, and w 1 is Around 1.5 mm, t 1 is 0.5
.About.1.0 mm, w 2 is 2 to 3 mm, and t 2 is 1.0 to 2 .
The value is preferably about 0 mm. In general, waveforms,
When a bead having a cross-sectional shape in the width direction such as an arc is compressed, the apex is bent to the opposite side and deformed into an inverted W shape. In the case of the oil hole bead 1 formed as described above, the apex on the oil hole 3 side is formed. Since t 2 is formed wide, it is easy to bend,
As shown in FIG. 3, an inverted W shape is easily obtained. When this inverted W type is further compressed, the bead width W is deformed more uniformly,
When the rising angle is small, a more uniform reaction force can be obtained, and a weaker compressive force can generate a more uniform surface pressure over the entire bead width W. The symbols shown in FIG.
Reference numeral 10 is a cylinder head, 11 is a cylinder body, and 12 is an oil passage formed in the cylinder head 10 and the cylinder body 11.
【0016】これに対してボルト穴4側では、圧縮され
ると頂部t1 の幅が狭く、立上がり角が小さいので、容
易にビードを圧縮できる。ところで、ボルト(図示せ
ず)の締め付け力は、シリンダ穴6側により均等に作用
するが、オイル穴3に対しては片締まり状態となる。更
に、内燃機関(図示せず)の作動により、前記締め付け
力が脈動し、その影響は、オイル穴3のオイル穴側Bの
締め付け条件はボルト穴側Aより脈動の振幅が大きくな
る。On the other hand, on the bolt hole 4 side, when compressed, the width of the top t 1 is narrow and the rising angle is small, so the bead can be easily compressed. By the way, the tightening force of the bolt (not shown) acts more uniformly on the cylinder hole 6 side, but the oil hole 3 is in a partially tightened state. Further, the tightening force pulsates due to the operation of the internal combustion engine (not shown), and the effect is that the tightening condition on the oil hole side B of the oil hole 3 has a larger pulsation amplitude than on the bolt hole side A.
【0017】しかしながら、実施例1のオイル穴用ビー
ド1は、締め付け力が弱く、且つ締め付け力の脈動が激
しくなる外周5側が、弱い締め付け力で圧縮可能であ
り、逆W形に変形することで、容易に脈動に追随して伸
縮が可能となり、高いシール性能を維持することができ
る。図4に示す実施例2のオイル穴用ビード1は、積層
形シリンダヘッドガスケット13によって実施し、幅方向
断面形状を連続する円弧状に形成したものである。実施
例2のオイル穴用ビード1も、実施例1のオイル穴用ビ
ード1と同様の高いシール性能が得られた。なお図4に
示す符号14はヘッドボルトである。However, in the oil hole bead 1 of the first embodiment, the outer periphery 5 side where the tightening force is weak and the pulsation of the tightening force is severe can be compressed with a weak tightening force, and is deformed into an inverted W shape. The pulsation can be easily expanded and contracted, and high sealing performance can be maintained. The oil hole bead 1 according to the second embodiment shown in FIG. 4 is formed by a laminated cylinder head gasket 13 and has a cross-sectional shape in the width direction formed in a continuous arc shape. The oil hole bead 1 of Example 2 also provided the same high sealing performance as the oil hole bead 1 of Example 1. Reference numeral 14 shown in FIG. 4 is a head bolt.
【0018】[0018]
【発明の効果】以上説明したように本発明のオイル穴用
ビードは、幅方向断面形状を、オイル穴側の立上り角よ
りボルト穴側の立上り角を小さく、且つボルト穴側の頂
部幅をオイル穴側の頂部幅より狭く形成したので、より
低い圧縮力が作用するガスケットの外周側部分にビード
幅全体をより均一に圧縮して幅広の面圧を発生させ、且
つ脈動圧縮力に追随して高いシール性能を維持させるこ
とができ、シリンダヘッドガスケットの信頼性を高める
ことができた。As described above, in the bead for an oil hole of the present invention, the cross-sectional shape in the width direction is such that the rising angle on the bolt hole side is smaller than the rising angle on the oil hole side, and the top width on the bolt hole side is the oil. Since it is formed narrower than the top width on the hole side, the entire bead width is compressed more uniformly on the outer peripheral side part of the gasket where a lower compression force acts, generating a wide surface pressure, and following the pulsating compression force. It was possible to maintain high sealing performance and improve the reliability of the cylinder head gasket.
【図1】本発明の実施例1によるオイル穴用ビードの部
分平面図である。FIG. 1 is a partial plan view of an oil hole bead according to a first embodiment of the present invention.
【図2】図2のAは図1のIIA−IIA線断面図であり、
Bは図1のIIB−IIB線断面図である。2A is a sectional view taken along line IIA-IIA of FIG.
2B is a sectional view taken along line IIB-IIB in FIG. 1.
【図3】図2に示すビード断面が変形した様子を示す説
明図である。FIG. 3 is an explanatory view showing a state where the bead cross section shown in FIG. 2 is deformed.
【図4】本発明の実施例2によるオイル穴用ビードの部
分断面図である。FIG. 4 is a partial sectional view of an oil hole bead according to a second embodiment of the present invention.
1 オイル穴用ビード 2 ガスケット(シリンダヘッドガスケット) 3 オイル穴 4 ボルト穴 5 外周 6 シリンダ穴 11 シリンダボディ 12 オイル通路 13 積層形シリンダヘッドガスケット 14 ヘッドボル
ト A ボルト穴側 B オイル穴側 h 高さ t1 幅 t2 幅 W ビード幅 w1 幅 w2 幅 θ1 立上り角 θ2 立上り角1 Bead for oil hole 2 Gasket (cylinder head gasket) 3 Oil hole 4 Bolt hole 5 Outer circumference 6 Cylinder hole 11 Cylinder body 12 Oil passage 13 Multi-layer cylinder head gasket 14 Head bolt A Bolt hole side B Oil hole side h Height t 1 width t 2 width W bead width w 1 width w 2 width θ 1 rising angle θ 2 rising angle
Claims (3)
じるオイル通路を、ヘッドボルトの近くの機関外周側に
形成した内燃機関用の金属シリンダヘッドガスケット
に、前記オイル通路用のオイル穴と前記ヘッドボルト用
のボルト穴を形成し、これらの穴の周囲を取り巻くビー
ドを、両方の穴に共通する1つのビードによって形成
し、このビードの幅方向断面形状を、オイル穴側の立上
り角よりボルト穴側の立上り角を小さく、且つボルト穴
側の頂部幅をオイル穴側の頂部幅より狭く形成したオイ
ル穴用ビード。1. A metal cylinder head gasket for an internal combustion engine, wherein an oil passage communicating from a cylinder body to a cylinder head is formed on an outer peripheral side of the engine near the head bolt, and an oil hole for the oil passage and the head bolt are provided. Bolt holes are formed, and the beads surrounding these holes are formed by one bead that is common to both holes, and the cross-sectional shape in the width direction of this bead is raised on the bolt hole side from the rise angle on the oil hole side. A bead for an oil hole with a small angle and a top width on the bolt hole side narrower than a top width on the oil hole side.
記頂部形状と、立上り角とを、ボルト穴側とオイル穴側
との間で徐々に変化させるようにした請求項1記載のオ
イル穴用ビード。2. The oil hole according to claim 1, wherein the top shape and the rising angle of the bead on the oil hole side and the bolt hole side are gradually changed between the bolt hole side and the oil hole side. Beads.
た請求項1又は2記載のオイル穴用ビード。3. The bead for an oil hole according to claim 1, wherein the bead has a trapezoidal sectional shape.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7226803A JP3055003B2 (en) | 1995-09-04 | 1995-09-04 | Oil hole bead |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7226803A JP3055003B2 (en) | 1995-09-04 | 1995-09-04 | Oil hole bead |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0972423A true JPH0972423A (en) | 1997-03-18 |
JP3055003B2 JP3055003B2 (en) | 2000-06-19 |
Family
ID=16850860
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7226803A Expired - Lifetime JP3055003B2 (en) | 1995-09-04 | 1995-09-04 | Oil hole bead |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3055003B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003028301A (en) * | 2001-07-19 | 2003-01-29 | Taiho Kogyo Co Ltd | Metallic gasket |
JP2007024066A (en) * | 2005-07-12 | 2007-02-01 | Nippon Reinz Co Ltd | Metal gasket |
-
1995
- 1995-09-04 JP JP7226803A patent/JP3055003B2/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003028301A (en) * | 2001-07-19 | 2003-01-29 | Taiho Kogyo Co Ltd | Metallic gasket |
JP2007024066A (en) * | 2005-07-12 | 2007-02-01 | Nippon Reinz Co Ltd | Metal gasket |
Also Published As
Publication number | Publication date |
---|---|
JP3055003B2 (en) | 2000-06-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4938488A (en) | Steel laminate gasket with wide sealing area | |
JP2007139177A (en) | Gasket | |
US4867462A (en) | Steel laminate gasket with separate beads | |
US5092613A (en) | Steel laminate gasket | |
JPH05340476A (en) | Metallic gasket | |
US7597329B2 (en) | Metal laminated type of cylinder head gasket with asymmetrical bead | |
JPH0734257U (en) | Cylinder head gasket | |
US6698765B2 (en) | Metal laminate gasket with continuous bead | |
US20050093248A1 (en) | Cylinder head gasket | |
US20060163820A1 (en) | Metal gasket | |
US7055830B2 (en) | Metal laminate gasket | |
JP2936395B2 (en) | Cylinder head gasket | |
JPH0972423A (en) | Bead for oiling hole | |
JP3055002B2 (en) | Oil hole bead | |
US6428016B1 (en) | Metal cylinder head gasket with compressibility adjusting slits | |
US7108268B2 (en) | Metal laminate gasket | |
US6969072B2 (en) | Cylinder head gasket with fold-over stopper | |
US5538263A (en) | Metal laminate gasket with edge support shims | |
US6997462B2 (en) | Cylinder head gasket | |
JPH11159621A (en) | Metal-made gasket | |
JP2003042295A (en) | Metal cylinder head gasket | |
JPH0752358Y2 (en) | Beads for oil holes | |
JP3086008B2 (en) | Metal gasket | |
JPH05263940A (en) | Manufacture of metallic gasket | |
JPH051730Y2 (en) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080414 Year of fee payment: 8 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090414 Year of fee payment: 9 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090414 Year of fee payment: 9 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100414 Year of fee payment: 10 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100414 Year of fee payment: 10 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110414 Year of fee payment: 11 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120414 Year of fee payment: 12 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130414 Year of fee payment: 13 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130414 Year of fee payment: 13 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140414 Year of fee payment: 14 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
EXPY | Cancellation because of completion of term |