JPH051731Y2 - - Google Patents
Info
- Publication number
- JPH051731Y2 JPH051731Y2 JP9823787U JP9823787U JPH051731Y2 JP H051731 Y2 JPH051731 Y2 JP H051731Y2 JP 9823787 U JP9823787 U JP 9823787U JP 9823787 U JP9823787 U JP 9823787U JP H051731 Y2 JPH051731 Y2 JP H051731Y2
- Authority
- JP
- Japan
- Prior art keywords
- metal plate
- gasket
- combustion chamber
- cylinder head
- plate
- 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 - Lifetime
Links
- 239000002184 metal Substances 0.000 claims description 61
- 238000002485 combustion reaction Methods 0.000 claims description 28
- 239000011324 bead Substances 0.000 claims description 23
- 238000003754 machining Methods 0.000 description 5
- 239000000567 combustion gas Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910000639 Spring steel Inorganic materials 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010960 cold rolled steel Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Gasket Seals (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
本考案は、内燃機関のシリンダヘツドとシリン
ダブロツクとの間に配置されるシリンダヘツドガ
スケツトに係り、特に金属製の積層多板構造のガ
スケツトに係る。[Detailed description of the invention] Industrial application field The present invention relates to a cylinder head gasket disposed between a cylinder head and a cylinder block of an internal combustion engine, and particularly relates to a gasket having a laminated multi-plate structure made of metal. .
従来の技術
金属板製のシリンダヘツドガスケツト、所謂金
属ガスケツトとしては、単板構造のものと積層多
板構造のものとが既に種々提案されており、これ
らは例えば、実開昭58−51040号、特開昭61−
255251号、特開昭61−255253号の各公報に示され
ている。Prior Art Various types of cylinder head gaskets made of metal plates, so-called metal gaskets, have already been proposed, including those with a single-plate structure and those with a laminated multi-plate structure. , JP-A-61-
No. 255251 and Japanese Unexamined Patent Publication No. 61-255253.
金属ガスケツトは、燃焼室開口周りにビードを
有し、シリンダヘツドとシリンダブロツクとを締
結するボルトにより締結力を及ぼされることによ
り前記ビードを弾性変形され、基本的にはこのビ
ードの弾性変形による復元力によつてシリンダヘ
ツドとシリンダブロツクの各々の接合面に密着し
て燃焼室のシール作用を行うようになつている。 A metal gasket has a bead around the opening of the combustion chamber, and the bead is elastically deformed when a fastening force is applied by a bolt that fastens the cylinder head and cylinder block, and basically the bead is restored by the elastic deformation of the bead. The cylinder head and cylinder block are brought into close contact with each joint surface by force, thereby performing a sealing action on the combustion chamber.
燃焼室周りにて、より確実なシール効果を得る
ために、即ち燃焼室の高圧燃焼ガスの漏れをより
確実に回避するために、ガスケツトの燃焼室開口
周りにグロメツト或いは環状シムの如き厚さ増大
用の副板を設けて燃焼室開口周りに於けるガスケ
ツトの接合面圧を高めることが行われている。 In order to obtain a more reliable sealing effect around the combustion chamber, that is, to more reliably avoid leakage of high-pressure combustion gas in the combustion chamber, the thickness of the gasket is increased, such as a grommet or an annular shim, around the combustion chamber opening. A secondary plate is provided to increase the contact pressure of the gasket around the combustion chamber opening.
考案が解決しようとする問題点
ガスケツトの接合面圧を高めるに必要な厚さ増
大量は50〜100μ程度の極く僅かな量であるが、
しかし従来は、この僅かな厚さ増大のためにグロ
メツトを装着するか、或いはシム板を一枚追加し
ており、このため部品点数及び組付け工数が増大
し、また厚さ増大用副板は50〜100μ程度の極薄
板であるために、これの強度及び耐熱性が充分に
得られず、適用内燃機関が限定されている。The problem that the invention aims to solve: The amount of increase in thickness required to increase the joint surface pressure of the gasket is a very small amount of about 50 to 100μ.
However, conventionally, this slight increase in thickness has been achieved by installing grommets or adding a shim plate, which increases the number of parts and assembly man-hours, and also requires a sub-plate for increasing the thickness. Since it is an extremely thin plate with a thickness of about 50 to 100 microns, it does not have sufficient strength and heat resistance, and its applicable internal combustion engines are limited.
単板構造のガスケツトにはビードより燃焼室開
口の側にエンボス加工等によりガスケツト自体に
***部が設けられ、この***部によりガスケツト
の燃焼室開口周りの板厚を見掛け上、大きくして
燃焼室開口周りにて高い接合面圧が得られるよう
にしたものがあるが、しかしビードは適度な弾性
を備えていることを要求されることから、ガスケ
ツトはばね鋼板或いはステンレス鋼板の如き適度
の弾性を有する金属板により構成され、このため
ガスケツト自体に***部が設けられてもこの***
部が充分な剛性を備えず、この***部はビードと
等価なものになり、この***部によつては接合面
圧を充分に高めることが難しい。またこれでは材
質から***部に亀裂が生じ易い。 A gasket with a single plate structure has a raised part on the gasket itself by embossing or the like on the side of the combustion chamber opening from the bead, and this raised part apparently increases the thickness of the gasket around the combustion chamber opening. Some gaskets are designed to obtain high joint surface pressure around the opening, but since the bead is required to have appropriate elasticity, the gasket is made of spring steel plate or stainless steel plate with appropriate elasticity. Therefore, even if a raised part is provided on the gasket itself, this raised part does not have sufficient rigidity, and this raised part becomes equivalent to a bead. It is difficult to sufficiently increase surface pressure. In addition, cracks are likely to occur in the raised portion due to the material.
本考案は、燃焼室開口周りにてガスケツトの接
合面圧を充分に高めることができ、しかも締付け
時に於けるビードの弾性変形量を適切に制御する
ことができ、燃焼室の高圧燃焼ガスに対するシー
ル性及び耐久性に優れた金属製積層シリンダヘツ
ドガスケツトを提供することを目的としている。 This invention can sufficiently increase the joint surface pressure of the gasket around the opening of the combustion chamber, and can also appropriately control the amount of elastic deformation of the bead during tightening, thereby creating a seal against high-pressure combustion gas in the combustion chamber. The object of the present invention is to provide a metal laminated cylinder head gasket with excellent strength and durability.
問題点を解決するための手段
上述の如き目的は、本考案によれば、所定の厚
さを有する中間金属板と、前記中間金属板の両側
に各々重ね合わされて配置され燃焼室開口周りに
環状のビードを有する二枚の金属薄板とを有し、
前記中間金属板には自身の燃焼室開口の周縁に沿
つて塑性変形による***部が設けられていること
を特徴とする金属製積層シリンダヘツドガスケツ
トによつて達成される。Means for Solving the Problems According to the present invention, an intermediate metal plate having a predetermined thickness; two thin metal plates having beads of
This is achieved by a metal laminated cylinder head gasket characterized in that the intermediate metal plate is provided with a ridge formed by plastic deformation along the periphery of its combustion chamber opening.
考案の作用及び効果
上述の如き構成によれば、中間金属板に設けら
れた***部によりガスケツトの燃焼室開口周りの
板厚が見かけ上、大きくなり、中間金属板はビー
ドを設けられる金属薄板とは別体のものであるか
ら、これは所要の板厚を有する圧延鋼板など、適
度の剛性を有する金属板により構成されてよく、
このことから***部は加工硬化と相俟つて所要の
剛性を備えるようになり、該***部はガスケツト
締結時に於ても弾性変形せずに板厚増大部として
有効に作用し、これにより部品点数及び組付け工
数の増大を招くことなく燃焼室開口周りに於ける
ガスケツトの接合面圧が充分に高くなり、燃焼室
の高圧燃焼ガスのシールが確実に行われるように
なる。Effects and Effects of the Invention According to the configuration as described above, the thickness of the gasket around the combustion chamber opening of the gasket is apparently increased due to the raised portion provided on the intermediate metal plate, and the intermediate metal plate is a thin metal plate provided with a bead. Since it is a separate piece, it may be constructed of a metal plate with appropriate rigidity, such as a rolled steel plate with the required thickness,
As a result, the raised part becomes work-hardened and has the required rigidity, and even when the gasket is fastened, the raised part does not deform elastically and acts effectively as a part that increases the plate thickness, thereby reducing the number of parts. Moreover, the contact surface pressure of the gasket around the opening of the combustion chamber can be sufficiently increased without increasing the number of assembly steps, and the high-pressure combustion gas in the combustion chamber can be reliably sealed.
前記***部はガスケツトの締結時に於ても消滅
することがないから、該***部は金属薄板に設け
られているビードの圧縮変形量を制限してビード
の過剰変形による圧壊を回避するようになり、こ
のことからガスケツトの耐久性が向上するように
なる。 Since the raised portion does not disappear even when the gasket is fastened, the raised portion limits the amount of compressive deformation of the bead provided on the thin metal plate to avoid crushing due to excessive deformation of the bead. This improves the durability of the gasket.
実施例
以下に添付の図を参照して本考案を実施例につ
いて詳細に説明する。Embodiments Hereinafter, the present invention will be described in detail with reference to embodiments with reference to the accompanying drawings.
第１図乃至第３図は本考案による金属製積層シ
リンダヘツドガスケツトの一つの実施例を示して
いる。図に於て、１０はシリンダヘツドガスケツ
トを示しており、シリンダヘツドガスケツト１０
は、中間金属板１２と、中間金属板１２の両側に
各々重合せられて配置された二枚の金属薄板１４
及び１６とを有し、これらには、燃焼室開口１
８、冷却水通路用開口２０、潤滑油通路用開口２
２、ボルト通し孔２４が設けられている。尚、中
間金属板１２と金属薄板１４，１６は適当な箇所
をスポツト溶接されることにより互いに連結され
ていてよい。 1 to 3 show one embodiment of a metal laminated cylinder head gasket according to the present invention. In the figure, numeral 10 indicates a cylinder head gasket.
consists of an intermediate metal plate 12 and two thin metal plates 14 placed overlappingly on both sides of the intermediate metal plate 12.
and 16, these have a combustion chamber opening 1
8. Cooling water passage opening 20, lubricating oil passage opening 2
2. A bolt through hole 24 is provided. Note that the intermediate metal plate 12 and the thin metal plates 14 and 16 may be connected to each other by spot welding at appropriate locations.
中間金属板１２は、ガスケツト１０全体の厚さ
増大のために設けられ、これは0.6〜0.9mm程度の
所要の厚さを有し、冷間圧延鋼板或いはこれと類
似の鋼板により構成されている。 The intermediate metal plate 12 is provided to increase the thickness of the entire gasket 10, has a required thickness of about 0.6 to 0.9 mm, and is made of a cold-rolled steel plate or a similar steel plate. .
金属薄板１２及び１４は、各々0.2〜0.4mm程度
の厚さを有するステンレス鋼板或いはばね鋼板の
如く適度のばね性を有する鋼板により達成され、
燃焼室開口１８ｂ，１８ｃの周りにこれと同心に
平面形状が円環状であつて断面形状が半円状のビ
ード２６及び２８を有している。図示の実施例に
於ては、金属薄板１２のビード２６と金属薄板１
６のビード２８は中間金属板１２の両側にあつて
互に同方向に突出し、金属薄板１４はその一般平
面にて中間金属板１２の図にて上面に接合し、金
属薄板１６はビード２８の頂面部にて中間金属板
１２の図にて下面に接合するようになつている
が、このことは特に特定されず、その反対であつ
ても、或いはビード２６と２８の突出方向が互に
相反していて金属薄板１４及び１６は共に各々の
一般平面にて中間金属板１２の図にて上下両面に
接合しても或いはビード２６及び２８の各々の頂
面部にて中間金属板１２の図にて上下両面に接合
するようになつていてもよく、これらのことはシ
リンダヘツド及びシリンダブロツクのガスケツト
接合面の表面粗さ等に応じて適宜に決められれば
よい。 The metal thin plates 12 and 14 are each made of a stainless steel plate having a thickness of about 0.2 to 0.4 mm or a steel plate having appropriate spring properties such as a spring steel plate,
Beads 26 and 28 are provided around and concentrically with the combustion chamber openings 18b and 18c and have an annular planar shape and a semicircular cross-sectional shape. In the illustrated embodiment, the bead 26 of the thin metal plate 12 and the thin metal plate 1
The beads 28 of No. 6 are located on both sides of the intermediate metal plate 12 and protrude in the same direction, the thin metal plate 14 is joined to the upper surface of the intermediate metal plate 12 in its general plane, and the thin metal plate 16 is attached to the upper surface of the intermediate metal plate 12 in the drawing. Although the top surface portion is joined to the bottom surface of the intermediate metal plate 12 in the figure, this is not particularly specified, and even if it is the opposite, or the protruding directions of the beads 26 and 28 are mutually opposite. The thin metal plates 14 and 16 may be joined together on both the upper and lower sides of the intermediate metal plate 12 in their respective general planes, or alternatively, the metal sheets 14 and 16 may be joined to the upper and lower sides of the intermediate metal plate 12 in their respective general planes, or alternatively, the metal sheets 14 and 16 may be joined to the upper and lower surfaces of the intermediate metal plate 12 at the top surface of each of the beads 26 and 28. The gasket may be joined to both the upper and lower surfaces, and these may be determined as appropriate depending on the surface roughness of the gasket joint surfaces of the cylinder head and cylinder block.
中間金属板１２には燃焼室開口１８ａの周縁に
沿つて***部３０が形成されている。***部３０
はビード２６及び２８より燃焼室開口１８の側に
て燃焼室開口１８と同心に円環状に結成されてい
る。***部３０は、プレス加工或いはローラがけ
等による塑性変形加工により中間金属板１２の一
方の面部に溝３２が成形されることに伴ないその
溝３２の両側に塑性流動によつて肉部が盛上がる
ことにより創成されており、この***部３０は互
いに同心の二重の輪になる。***部３０は、盛上
がり肉部を、第４図に示されている如く、平押し
工具５０により圧縮されてその尖つた頂部を、第
５図に示されている如く、偏平にされることによ
り最終成形され、その高さは50〜100μ程度に設
定されている。 A raised portion 30 is formed on the intermediate metal plate 12 along the periphery of the combustion chamber opening 18a. Raised portion 30
is formed in an annular shape concentrically with the combustion chamber opening 18 on the side closer to the combustion chamber opening 18 than the beads 26 and 28 . The raised portion 30 is formed by forming a groove 32 on one surface of the intermediate metal plate 12 by plastic deformation processing such as pressing or rolling, and a flesh portion is raised on both sides of the groove 32 by plastic flow. This ridge 30 forms double rings concentric with each other. The raised portion 30 is formed by compressing the raised flesh portion with a flattening tool 50 as shown in FIG. 4 and flattening the sharp top portion as shown in FIG. 5. The final molding is performed, and its height is set to approximately 50 to 100μ.
第６図は第１図乃至第３図に示されたシリンダ
ヘツドガスケツトをシリンダヘツドＨとシリンダ
ブロツクＢとの間に取付けた状態を示している。
図示されていない締結ボルトによつてシリンダヘ
ツドＨとシリンダブロツクＢとがシリンダヘツド
ガスケツト１０を挾んだ状態にて締結されると、
そのボルトによる締結力がシリンダヘツドガスケ
ツト１０に作用し、これによつて金属薄板１４の
ビード２６はシリンダヘツドＨと中間金属板１２
との間に挾まれた状態にて圧縮方向に弾性変形
し、また金属薄板１６のビード２８はシリンダブ
ロツクＢと中間金属板１２との間に挾まれた状態
にて圧縮方向に弾性変形し、***部３０が金属薄
板１４及び１６と共にシリンダヘツドＨとシリン
ダブロツクＢの間に挾まれて金属薄板１６を介し
てシリンダブロツクＢに対し押付けられることに
より中間板１２は***部３０とは反対の側に変形
を生じて塑性流動による***部３４を創成するよ
うになる。 FIG. 6 shows the cylinder head gasket shown in FIGS. 1 to 3 installed between cylinder head H and cylinder block B. FIG.
When the cylinder head H and cylinder block B are fastened together with the cylinder head gasket 10 sandwiched between them using fastening bolts (not shown),
The fastening force of the bolt acts on the cylinder head gasket 10, thereby causing the bead 26 of the thin metal plate 14 to connect to the cylinder head H and the intermediate metal plate 12.
The bead 28 of the thin metal plate 16 is elastically deformed in the compression direction while being sandwiched between the cylinder block B and the intermediate metal plate 12. The raised portion 30 is sandwiched between the cylinder head H and the cylinder block B together with the thin metal plates 14 and 16 and is pressed against the cylinder block B via the thin metal plate 16, so that the intermediate plate 12 is placed on the side opposite to the raised portion 30. deformation occurs, creating a protrusion 34 due to plastic flow.
上述の如く、中間板１２の両側に***部３０及
び３４が設けられることにより、ガスケツト１０
の燃焼室開口周りの板厚が見掛け上、増大し、こ
の部分に於けるガスケツト１０の接合面圧が上昇
するようになつて燃焼室Ｃの高圧燃焼ガスがシリ
ンダヘツドＨとシリンダブロツクＢとの接合部よ
り外部へ漏洩することが確実に防止されるように
なる。また***部３０及び３４は各々金属薄板１
４及び１６のビード２６及び２８の圧縮変形量を
制限し、これが完全に圧壊することを防止する。 As mentioned above, by providing the ridges 30 and 34 on both sides of the intermediate plate 12, the gasket 10
The plate thickness around the opening of the combustion chamber apparently increases, and the contact surface pressure of the gasket 10 in this area increases, causing high-pressure combustion gas in the combustion chamber C to flow between the cylinder head H and the cylinder block B. Leakage to the outside from the joint can be reliably prevented. Further, the raised portions 30 and 34 are respectively formed on the thin metal plate 1.
The amount of compressive deformation of the beads 26 and 28 of Nos. 4 and 16 is limited to prevent them from being completely crushed.
第７図は本考案による金属製積層シリンダヘツ
ドガスケツトの他の一つの実施例を示している。
尚、第７図に於て第３図に対応する部分は第３図
に付した符号と同一の符号により示されている。 FIG. 7 shows another embodiment of the metal laminated cylinder head gasket according to the present invention.
In FIG. 7, parts corresponding to those in FIG. 3 are designated by the same reference numerals as those in FIG. 3.
かかる実施例に於ては、中間金属板１２に対す
る溝３２の加工時に溝３２の両側に塑性流量に得
られる***部３０以外に溝３２とは反対に側に隆
起部３６が突出形成されている。この加工は、例
えば第８図に示されている如く、溝加工工具５２
による溝加工時に於て中間金属板１２を保持する
基盤５４に溝加工工具５２と対応して窪み５６が
設けられていればよい。 In this embodiment, in addition to the ridges 30 obtained by plastic flow on both sides of the groove 32 when the groove 32 is formed in the intermediate metal plate 12, a ridge 36 is formed protruding from the side opposite to the groove 32. . This machining is carried out using a groove machining tool 52, for example, as shown in FIG.
It is only necessary that a depression 56 be provided in the base 54 that holds the intermediate metal plate 12 during groove machining by corresponding to the groove machining tool 52.
尚、この場合は、***部３０の高さと***部３
６の高さとの合計が50〜100μ程度であればよい。 In this case, the height of the raised portion 30 and the raised portion 3
The total height including height 6 may be about 50 to 100μ.
この実施例に於ても、***部３０及び３６が
各々上述の実施例と同様にガスケツト１０の燃焼
室開口周りの板厚を見掛け上、増大すべく作用
し、これによりこの実施例に於ても上述の実施例
と同様の効果が得られる。 In this embodiment, the raised portions 30 and 36 each serve to apparently increase the thickness of the gasket 10 around the combustion chamber opening, as in the above-described embodiment, thereby increasing the thickness of the gasket 10 around the combustion chamber opening. Also, the same effects as in the above embodiment can be obtained.
以上に於ては、本考案を特定の実施例について
詳細に説明したが、本考案は、これらに限定され
るものではなく、本考案の範囲内にて種々の実施
例が可能であることは当業者にとつて明らかであ
ろう。 In the above, the present invention has been described in detail with respect to specific embodiments, but the present invention is not limited to these, and it is understood that various embodiments are possible within the scope of the present invention. It will be clear to those skilled in the art.
第１図は本考案による金属製積層シリンダヘツ
ドガスケツトの一つの実施例を示す平面図、第２
図は第１図に締された金属製積層シリンダヘツド
ガスケツトの側面図、第３図は第１図の線−
に沿う拡大縦断面図、第４図及び第５図は本考案
による金属積層シリンダヘツドガスケツトの中間
金属板に設けられる***部の加工工程例を示す拡
大縦断面図、第６図は第１図乃至第３図に示され
たガスケツトの取付状態を示す拡大縦断面図、第
７図は本考案による金属製積層シリンダヘツドガ
スケツトの他の一つの実施例をその要部について
示す拡大縦断面図、第８図は第７図に示されたシ
リンダヘツドガスケツトの中間金属板に設けられ
る***部の加工工程例を示す拡大縦断面図であ
る。
１０……シリンダヘツドガスケツト、１２……
中間金属板、１４，１６……金属薄板、１８……
燃焼室開口、２０……冷却水通路用開口、２２…
…潤滑油通路用開口、２４……ボルト通し孔、２
６，２８……ビード、３０……***部、３２……
溝、３４，３６……***部。
Fig. 1 is a plan view showing one embodiment of the metal laminated cylinder head gasket according to the present invention;
The figure is a side view of the metal laminated cylinder head gasket tightened as shown in Figure 1, and Figure 3 is the line shown in Figure 1.
FIGS. 4 and 5 are enlarged longitudinal sectional views showing an example of the machining process of the raised portion provided on the intermediate metal plate of the metal laminated cylinder head gasket according to the present invention, and FIG. 7 is an enlarged vertical cross-sectional view showing the main parts of another embodiment of the metal laminated cylinder head gasket according to the present invention. 8 are enlarged longitudinal cross-sectional views showing an example of the processing steps for the raised portion provided on the intermediate metal plate of the cylinder head gasket shown in FIG. 7. 10... Cylinder head gasket, 12...
Intermediate metal plate, 14, 16... Metal thin plate, 18...
Combustion chamber opening, 20...Cooling water passage opening, 22...
...Lubricating oil passage opening, 24...Bolt through hole, 2
6, 28...bead, 30...ridge, 32...
Grooves, 34, 36...ridges.
Claims (1)
属板の両側に各々重ね合わされて配置され燃焼室
開口周りに環状のビードを有する二枚の金属薄板
とを有し、前記中間金属板には自身の燃焼室開口
の周縁に沿つて塑性変形による***部が設けられ
ていることを特徴とする金属製積層シリンダヘツ
ドガスケツト。 an intermediate metal plate having a predetermined thickness; and two thin metal plates arranged on both sides of the intermediate metal plate and having an annular bead around the opening of the combustion chamber, and the intermediate metal plate includes: A metal laminated cylinder head gasket characterized in that a raised part formed by plastic deformation is provided along the periphery of its combustion chamber opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9823787U JPH051731Y2 (en) | 1987-06-26 | 1987-06-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9823787U JPH051731Y2 (en) | 1987-06-26 | 1987-06-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS644838U JPS644838U (en) | 1989-01-12 |
| JPH051731Y2 true JPH051731Y2 (en) | 1993-01-18 |
Family
ID=31324322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9823787U Expired - Lifetime JPH051731Y2 (en) | 1987-06-26 | 1987-06-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH051731Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3489755B2 (en) | 1994-08-05 | 2004-01-26 | 日本ガスケット株式会社 | Metal gasket |
| JP4624650B2 (en) * | 2002-04-19 | 2011-02-02 | エルリンククリンガー アクチェンゲゼルシャフト | Cylinder head gasket |
| US7503049B2 (en) | 2003-05-29 | 2009-03-10 | Panasonic Corporation | Information processing apparatus operable to switch operating systems |
-
1987
- 1987-06-26 JP JP9823787U patent/JPH051731Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS644838U (en) | 1989-01-12 |
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