JPH07208487A - Bearing seal and manufacture thereof - Google Patents
Bearing seal and manufacture thereofInfo
- Publication number
- JPH07208487A JPH07208487A JP2221794A JP2221794A JPH07208487A JP H07208487 A JPH07208487 A JP H07208487A JP 2221794 A JP2221794 A JP 2221794A JP 2221794 A JP2221794 A JP 2221794A JP H07208487 A JPH07208487 A JP H07208487A
- Authority
- JP
- Japan
- Prior art keywords
- elastic
- ring
- bearing
- hardness
- bearing seal
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
- F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc
- F16C33/7853—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc with one or more sealing lips to contact the inner race
- F16C33/7856—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc with one or more sealing lips to contact the inner race with a single sealing lip
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/783—Details of the sealing or parts thereof, e.g. geometry, material of the mounting region
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/7833—Special methods of manufacture
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、連続して大量に生産す
ることを可能とし、かつ成形後の仕上げ処理を不要とし
て、密封性に優れかつベアリングへの固着性にも優れる
ベアリングシールに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing seal which can be continuously mass-produced, does not require finishing treatment after molding, and has excellent sealing property and sticking property to a bearing.
【０００２】[0002]
【従来の技術】従来、ベアリングに装着されるベアリン
グシールは、図面によって説明すると図７に示すよう
に、所望のリング形状に形成された補強環（２）とシー
ルリップを有する密封部材（ｃ）からなっており、その
成形においては該リング状の補強環（２）に弾性体から
なる密封材料を成形金型を用いて加硫成型し、所望する
形状のベアリングシール（Ｄ）を得ていた。2. Description of the Related Art Conventionally, as shown in FIG. 7, a bearing seal mounted on a bearing has a sealing member (c) having a reinforcing ring (2) and a seal lip formed in a desired ring shape. In the molding, the ring-shaped reinforcing ring (2) was vulcanized and molded with a sealing material made of an elastic body using a molding die to obtain a bearing seal (D) having a desired shape. .
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、前記の
ようなベアリングシール（Ｄ）の成型工程においては、
金型内へ前記造形された補強環（２）を正確に載置して
これに密封材料を供給して成型硬化し、その後成型品の
取り出し等複雑な工程が必要となり、さらに必ず余剰の
密封材料が内・外方にバリを形成しこれが成型品と共に
取り出されるので、該バリの面倒な除去工程を必要とす
る。However, in the molding process of the bearing seal (D) as described above,
Accurately place the shaped reinforcing ring (2) in the mold, supply a sealing material to it, mold and harden it, and then take a complicated step such as taking out the molded product, and also make sure to seal the excess. Since the material forms burrs inside and outside and is taken out together with the molded product, a troublesome removing step of the burrs is required.
【０００４】このような不具合を解消するために、図６
で示す、特開昭５４−６８８８２号公報のような、補強
板（ａ）と共に密封材（ｂ）も同時にプレスパンチ
（３）で打ち抜いてベアリングシール（Ｂ）を得る打抜
きタイプの製造方法が実施されている。しかしながらこ
のベアリングシール（Ｂ）の装着においては、単純な打
ち抜き成形のため図４に示すように周端のシールリップ
（４）の断面形状がほぼ一つの形に限られてしまい自由
度が少ない。すなわち、この構造ではベアリング（１）
の嵌合溝（５）の形状及びその深さまで制約をあたえ該
嵌合溝（５）に高精度を要求するからコストアップを招
き、また装着においても繊細な嵌入作業を強いるなど欠
点が多いものであった。In order to eliminate such a problem, FIG.
As shown in JP-A-54-68882, a punching type manufacturing method for obtaining a bearing seal (B) by punching a reinforcing plate (a) together with a sealing material (b) with a press punch (3) at the same time is carried out. Has been done. However, in mounting the bearing seal (B), the cross-sectional shape of the seal lip (4) at the peripheral end is limited to almost one shape as shown in FIG. That is, in this structure, the bearing (1)
The shape and depth of the fitting groove (5) are restricted, and the fitting groove (5) requires high accuracy, which leads to an increase in cost, and also has many drawbacks such as delicate fitting work in mounting. Met.
【０００５】本発明はこのような欠点に鑑み、形状自由
度が高く成型性及び嵌合力に優れるベアリングシールを
提供することを目的としている。In view of these drawbacks, the present invention has an object to provide a bearing seal which has a high degree of freedom in shape and is excellent in moldability and fitting force.
【０００６】[0006]
【課題を解決するための手段】本発明は、図２に示すよ
うに、ベアリング（１、１′）に取り付けられ、その密
封をなすベアリングシール（Ａ）とその製造方法であ
り、図５に示すように補強板（ａ）にそれぞれ硬度の異
なる複数の密封材（ｂ１、ｂ２）を層状に固着せしめ、
これをプレスパンチ（３）で打抜いてそれぞれ径寸法の
異なる層状の弾性リング（ｂ１、ｂ２）と補強リング
（ａ１）を持つベアリングシール（Ａ）を得ることを特
徴としている。As shown in FIG. 2, the present invention is a bearing seal (A) which is attached to a bearing (1, 1 ') to form a hermetic seal and a manufacturing method thereof. As shown, a plurality of sealing materials (b1, b2) having different hardnesses are fixed to the reinforcing plate (a) in layers,
This is punched by a press punch (3) to obtain a bearing seal (A) having layered elastic rings (b1, b2) and reinforcing rings (a1) having different diameters.
【０００７】[0007]
【作用】本発明は、上記した構成をもって下記に示す優
れた作用をなす。すなわち、図５に示すように剛性のあ
る薄板あるいは帯板などの補強板（ａ）の表面に予め合
成ゴムあるいは合成樹脂等の弾性体からなる密封材
（ｂ）を固着せしめ、これをプレスパンチ（３）で打抜
いてベアリングシール（Ａ）を得るとき、前記密封材
（ｂ）をそれぞれ硬度の異なる弾性リング（ｂ１、ｂ
２）として配備し、これを打ち抜き形成せしめ、図１に
示すようにその径寸法を圧縮変形量及び弾性反発力の違
いを利用して補強リング（ａ１）の周縁以上に突出する
ようそれぞれ異径に形成する。この場合、図１に示すよ
うに補強リング（ａ１）側に位置する弾性リング（ｂ
２）の硬度を外側の弾性リング（ｂ１）の硬度より高め
て配置せしめると、図１のように硬度の低い外側の弾性
リング（ｂ１）の周縁が補強リング（ａ１）側の弾性リ
ング（ｂ２）の周縁以上に突出するものとなり、これと
反対の突出形状を望むならそれぞれの密封材（ｂ）の硬
度を逆に配置すれば補強リング（ａ１）側の弾性リング
（ｂ２）の周縁が最も突出する形状のベアリングシール
（Ａ、図示していない）が得られる。The present invention has the above-described structure and exhibits the following excellent effects. That is, as shown in FIG. 5, a sealing material (b) made of an elastic material such as synthetic rubber or synthetic resin is preliminarily fixed to the surface of a reinforcing plate (a) such as a rigid thin plate or strip plate, and this is press punched. When the bearing seal (A) is obtained by punching with (3), the sealing material (b) is replaced by elastic rings (b1, b) having different hardness.
2) and punching it out. As shown in FIG. 1, the diameters of the different diameters are projected so as to project beyond the peripheral edge of the reinforcing ring (a1) by utilizing the difference in the compressive deformation amount and the elastic repulsion force. To form. In this case, as shown in FIG. 1, the elastic ring (b) located on the side of the reinforcing ring (a1).
When the hardness of 2) is set higher than the hardness of the outer elastic ring (b1), the peripheral edge of the outer elastic ring (b1) having a low hardness is elastic ring (b2) on the reinforcing ring (a1) side as shown in FIG. ), And if the projecting shape opposite to this is desired, the peripheral edge of the elastic ring (b2) on the side of the reinforcing ring (a1) should be the most if the hardness of each sealing material (b) is reversed. A protruding bearing seal (A, not shown) is obtained.
【０００８】このベアリングシール（Ａ）の装着におい
ては、図３に示すように、弾性リング（ｂ１、ｂ２）側
をベアリング（１）の奥方に向けて嵌入せしめると、奥
側に位置する周縁の大きく突出したリップ部（６）はそ
の柔軟な弾力によって補強リング（ａ１）側に倒れ、こ
れに伴って中程に位置する小さく突出した硬度の高いリ
ップ部（６´）を引っ張って前記補強リング（ａ１）の
周縁部分を巻き込み、図３に示すように嵌合溝（５）に
至ると前記小さく突出するリップ部（６´）が前記補強
リング（ａ１）の周縁を包み大きく突出するリップ部
（６）がその外周部に回り込む嵌合形状となる。このよ
うに二重に回り込んだリップ部（６、６´）は前記補強
リング（ａ１）の周端を抱持し硬度の異なる内外の材料
特性によって強固な固着を実現する。In mounting the bearing seal (A), as shown in FIG. 3, when the elastic ring (b1, b2) side is fitted toward the back of the bearing (1), the peripheral edge located on the back side is fitted. The large protruding lip portion (6) falls down to the reinforcing ring (a1) side due to its flexible elasticity, and accordingly, the small protruding lip portion (6 ') having a high hardness located in the middle is pulled to pull the reinforcing ring. The lip portion (6 ') which projects a small amount when the peripheral edge portion of (a1) is rolled up and reaches the fitting groove (5) as shown in FIG. 3 envelops the peripheral edge of the reinforcing ring (a1) and projects largely. (6) has a fitting shape that wraps around the outer peripheral portion. The double-wrapped lip portions (6, 6 ') embrace the peripheral end of the reinforcing ring (a1) and realize a firm fixation by the inner and outer material characteristics having different hardnesses.
【０００９】[0009]
【実施例】本発明を実施するに、図１では補強リング
（ａ１）側に位置する弾性リング（ｂ２）の硬度を外側
の弾性リング（ｂ１）の硬度より高めて、該硬度の低い
外側の弾性リング（ｂ１）の周縁を補強リング（ａ１）
側の弾性リング（ｂ２）の周縁より突出するものとする
よう配置したが、これとは反対の突出形状とする場合そ
れぞれの密封材（ｂ）の硬度を前記とは逆に配置するこ
とにより補強リング（ａ１）側の弾性リング（ｂ２）の
周縁が突出する形状のベアリングシール（Ａ）が得られ
（図示せず）、この構成では嵌合時補強リング（ａ１）
の周縁に硬度の低い弾性リング（ｂ２）が廻り込み、嵌
合溝（５）へは硬度の高い弾性リング（ｂ１）が沿う形
状となる。しかしこの硬度の高い弾性リング（ｂ１）は
その硬度により大きく突出しないので前記嵌合溝（５）
の全面へ廻り込むことはない。EXAMPLE To carry out the present invention, in FIG. 1, the hardness of the elastic ring (b2) located on the side of the reinforcing ring (a1) is made higher than the hardness of the outer elastic ring (b1) so that the outer ring having the lower hardness is The periphery of the elastic ring (b1) is reinforced with the reinforcing ring (a1).
It was arranged so as to project from the peripheral edge of the elastic ring (b2) on the side, but when it has a projecting shape opposite to this, it is reinforced by arranging the hardness of each sealing material (b) opposite to the above. A bearing seal (A) having a shape in which the peripheral edge of the elastic ring (b2) on the side of the ring (a1) projects is obtained (not shown), and in this configuration, the reinforcing ring (a1) during fitting.
The elastic ring (b2) having a low hardness wraps around the periphery of the elastic ring (b1) having a high hardness along the fitting groove (5). However, since the elastic ring (b1) having a high hardness does not significantly protrude due to its hardness, the fitting groove (5) is formed.
It does not go around the entire surface of.
【００１０】本発明を構成する弾性リング（ｂ１、ｂ
２）の硬度を異ならしめる手段としては、材料の架橋強
度を代えることで簡単に実施できるが、その他の方法と
して種々原料を変更するか、または密封材（ｂ）の片方
（ｂ１あるいはｂ２）へ補強繊維材、補強粉材等を混合
するなどの硬度を増す物質の添加による変更が可能であ
り、求められる性能に応じそれぞれを選択する。なお、
本発明を説明した実施例ではいづれもベアリングシール
（Ａ）の外径側がベアリング（１）の嵌合溝（５）へ装
着される嵌合部、すなわち外周リップ部（６、６´）の
構造を示したが、該嵌合部が内径側に位置する構造に対
しても対応可能なことは言うまでもない。The elastic rings (b1, b) constituting the present invention
As a means for making the hardness of 2) different, it can be easily carried out by changing the cross-linking strength of the material, but as another method, various raw materials are changed or one of the sealing materials (b) (b1 or b2) is used. It is possible to make changes by adding a substance that increases hardness, such as mixing a reinforcing fiber material and a reinforcing powder material, and select each according to the required performance. In addition,
In each of the embodiments for explaining the present invention, the outer diameter side of the bearing seal (A) is fitted into the fitting groove (5) of the bearing (1), that is, the structure of the outer peripheral lip portion (6, 6 '). However, it goes without saying that the fitting portion can be applied to a structure in which the fitting portion is located on the inner diameter side.
【００１１】このベアリングシール（Ａ）は、例えばミ
ニチュアベアリングの如き極小箇所のシール部材となる
ものにおいて極めて有用な形状となり、ベアリング
（１）の嵌合溝（５）に高い精度を期待し得ない箇所へ
の装着を可能とする。また、その固定力の調節において
は、前記弾性リング（ｂ１、ｂ２）の厚みとか硬度の調
整・組合せによって容易く変更可能となり、前記嵌合溝
（５）とか嵌合棚（符号を付していない）などの接触面
積増大に頼る必要はない。This bearing seal (A) has an extremely useful shape in a seal member for a very small place such as a miniature bearing, and it is not possible to expect high accuracy in the fitting groove (5) of the bearing (1). It can be attached to any place. Further, the adjustment of the fixing force can be easily changed by adjusting and combining the thickness and hardness of the elastic rings (b1, b2), and the fitting groove (5) or the fitting shelf (no reference numeral is attached). It is not necessary to rely on the increase in contact area such as).
【００１２】[0012]
【発明の効果】本発明によると、ベアリングシール
（Ａ）のリップ部（６、６´)は補強リング（ａ１）の
周縁にそれぞれ独自な形状と寸法さらに硬度をもって回
り込み前記補強リング（ａ１）の周端を二重に抱持して
いるので強固な固着を実現して、シール性、スリップト
ルク性、及び脱力性に大きな向上を見た。また、本発明
のベアリングシール（Ａ）は成型性を飛躍的に高めただ
けでなく、嵌合作業においても低硬度の弾性リング（ｂ
１）と高硬度の弾性リング（ｂ２）の柔硬両面の弾性に
よって円滑に挿入され装着不備を一掃せしめる。さらに
弾性リング（ｂ１、ｂ２）と補強リング（ａ１）はその
圧入方向によりメクレ現象を発生させず、かつ嵌合溝
（５）内で互いに押し付けられる関係にあるのでその密
着性さえ良好なものとする。According to the present invention, the lip portions (6, 6 ') of the bearing seal (A) wrap around the periphery of the reinforcing ring (a1) with unique shapes and dimensions and hardness, and the lip of the reinforcing ring (a1). Since the peripheral edge is held in double, a strong fixation is realized, and the sealing property, slip torque property, and desorption property are greatly improved. Further, the bearing seal (A) of the present invention not only has dramatically improved moldability, but also has a low hardness elastic ring (b) even during fitting work.
1) and the elasticity of both the soft and hard sides of the high hardness elastic ring (b2) allows smooth insertion and eliminates mounting defects. Furthermore, since the elastic rings (b1, b2) and the reinforcing ring (a1) do not cause the MECLE phenomenon due to their press-fitting directions and are pressed against each other in the fitting groove (5), their adhesion is good. To do.
【００１３】[0013]
【図１】本発明の一実施例を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the present invention.
【図２】本発明の実施例の装着された状態を示す断面図
である。FIG. 2 is a cross-sectional view showing a mounted state of the embodiment of the present invention.
【図３】図２で示す要部の拡大部分断面図である。FIG. 3 is an enlarged partial sectional view of a main part shown in FIG.
【図４】本発明を使用しない従来例を示す断面図であ
る。FIG. 4 is a cross-sectional view showing a conventional example not using the present invention.
【図５】本発明の造型工程を示す断面図である。FIG. 5 is a cross-sectional view showing a molding process of the present invention.
【図６】本発明を使用しない従来例の造型工程を示す断
面図である。FIG. 6 is a cross-sectional view showing a conventional molding process that does not use the present invention.
【図７】本発明を使用しない他の従来例の装着状態を示
す断面図である。FIG. 7 is a cross-sectional view showing a mounted state of another conventional example not using the present invention.
【００１４】[0014]
Ａ ベアリングシール Ｂ 単層の打ち抜きによるベアリングシール Ｃ 密封部材 Ｄ 加硫成型したベアリングシール １ ベアリング ２ 補強環 ３ プレスパンチ ４ シールリップ ５ 嵌合溝 ａ 補強板 ａ１ 補強リング ｂ 密封材 ｂ１ 弾性リング ｂ２ 弾性リング ６ 周縁の大きく突出したリップ部 ６´ 周縁の小さく突出したリップ部 A bearing seal B bearing seal by punching a single layer C sealing member D vulcanized bearing seal 1 bearing 2 reinforcing ring 3 press punch 4 seal lip 5 fitting groove a reinforcing plate a1 reinforcing ring b sealing material b1 elastic ring b2 elastic Ring 6 Largely protruding lip portion at the peripheral edge 6 ′ Smallly protruding lip portion at the peripheral edge
Claims (2)
封をなすベアリングシール（Ａ）において、金属等から
なる補強板（ａ）とそれぞれ硬度の異なる複数の弾性体
の密封材（ｂ）とを一体化せしめ、これをプレスパンチ
（３）で打抜いて層状の弾性リング（ｂ１、ｂ２）と補
強リング（ａ１）を持つベアリングシール（Ａ）を得る
とき、前記補強リング（ａ１）の周縁より突出する前記
弾性リング（ｂ１、ｂ２）の径寸法をそれぞれ異径に形
成せしめたことを特徴とするベアリングシール。1. A bearing seal (A) which is attached to and seals a bearing (1), wherein a reinforcing plate (a) made of metal or the like and a plurality of elastic sealing materials (b) each having different hardness are integrated. When the bearing seal (A) having the layered elastic rings (b1, b2) and the reinforcing ring (a1) is obtained by punching it out with a press punch (3), it protrudes from the peripheral edge of the reinforcing ring (a1). A bearing seal characterized in that the elastic rings (b1, b2) having different diameters are formed.
封をなすベアリングシール（Ａ）の製造方法において、
金属等からなる補強板（ａ）に弾性体からなる硬度の異
なった密封材（ｂ）を複数層状に固着せしめた後、これ
をプレスパンチ（３）で打抜いて層状の弾性リング（ｂ
１、ｂ２）と補強リング（ａ１）のそれぞれの周縁を異
径に形成せしめることを特徴とするベアリングシールの
製造方法。2. A method of manufacturing a bearing seal (A), which is attached to a bearing (1) and hermetically seals the same,
A plurality of layers of sealing material (b) made of an elastic material and having different hardnesses are fixed to a reinforcing plate (a) made of metal or the like, and then punched by a press punch (3) to form a layered elastic ring (b).
1, b2) and the reinforcing ring (a1) are formed with different diameters at their peripheral edges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2221794A JP3025939B2 (en) | 1994-01-21 | 1994-01-21 | Bearing seal and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2221794A JP3025939B2 (en) | 1994-01-21 | 1994-01-21 | Bearing seal and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07208487A true JPH07208487A (en) | 1995-08-11 |
| JP3025939B2 JP3025939B2 (en) | 2000-03-27 |
Family
ID=12076643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2221794A Expired - Fee Related JP3025939B2 (en) | 1994-01-21 | 1994-01-21 | Bearing seal and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3025939B2 (en) |
-
1994
- 1994-01-21 JP JP2221794A patent/JP3025939B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3025939B2 (en) | 2000-03-27 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |