JP3293075B2 - Lip type seal - Google Patents
Lip type sealInfo
- Publication number
- JP3293075B2 JP3293075B2 JP11969194A JP11969194A JP3293075B2 JP 3293075 B2 JP3293075 B2 JP 3293075B2 JP 11969194 A JP11969194 A JP 11969194A JP 11969194 A JP11969194 A JP 11969194A JP 3293075 B2 JP3293075 B2 JP 3293075B2
- Authority
- JP
- Japan
- Prior art keywords
- lip member
- diameter portion
- outer diameter
- elastomer
- inner diameter
- 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
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば冷房装置などの
冷凍機コンプレッサの回転軸周を密封するために設けら
れるリップ型シールに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lip seal provided for sealing the periphery of a rotating shaft of a refrigerator compressor such as a cooling device.
【０００２】[0002]
【従来の技術】冷凍機コンプレッサの回転軸周を密封す
るリップ型シールの典型的な従来例として、図２に示す
ように、エラストマ製リップ部材１０と、先端の内向鍔
２１及び後端のカシメ部２２がそれぞれ内径側へ屈曲し
て形成されカシメ部２２を除く部分がエラストマ製リッ
プ部材１０の外径部１１に埋設された金属製の外環２０
と、外径部３１がエラストマ製リップ部材１０の外径部
１１の背面に当接された合成樹脂製リップ部材３０と、
カシメ部２２に当接されて合成樹脂製リップ部材３０の
背面を押さえる金属製の内環４０とを備えたものが周知
である。外環２０の外周面は、エラストマ製リップ部材
１０の外径部１１に形成された圧着部１２で被覆されて
いる。エラストマ製リップ部材１０の外径部１１の背面
には図示されていない環状突起が形成されており、この
環状突起が合成樹脂製リップ部材３０の外径部３１の正
面に押しつぶされた状態で圧接されることにより、両リ
ップ部材１０，３０間の気密性の保持が図られている。2. Description of the Related Art As a typical conventional example of a lip-type seal for sealing the periphery of a rotating shaft of a refrigerator compressor, as shown in FIG. 2, an lip member 10 made of an elastomer, an inward flange 21 at a front end and a caulking at a rear end are provided. The metal outer ring 20 is formed such that the portions 22 are formed by bending to the inner diameter side, and the portion excluding the caulking portion 22 is embedded in the outer diameter portion 11 of the elastomer lip member 10.
A synthetic resin lip member 30 having an outer diameter portion 31 in contact with the back surface of the outer diameter portion 11 of the elastomer lip member 10;
It is well-known that an inner ring 40 made of metal is held in contact with the caulking portion 22 and presses the back surface of the synthetic resin lip member 30. The outer peripheral surface of the outer ring 20 is covered with a crimping part 12 formed on the outer diameter part 11 of the elastomer lip member 10. An annular protrusion (not shown) is formed on the back surface of the outer diameter portion 11 of the elastomer lip member 10, and the annular protrusion is pressed against the front surface of the outer diameter portion 31 of the synthetic resin lip member 30. Thus, the airtightness between the lip members 10 and 30 is maintained.
【０００３】すなわちこのリップ型シールは、外環２０
がエラストマからなる圧着部１２を介して、軸封部ハウ
ジング１の軸孔１ａに、この軸孔１ａに形成された段差
部１ｂと止め輪２によって軸方向の移動が規制された状
態で圧入装着され、密封空間である機内Ａ側へ湾曲して
延びるエラストマ製リップ部材１０の内径部１３の先端
に形成されたヘッド１３ａが、前記軸孔１ａに挿通され
たシャフト３の外周面と摺接することによって、機内Ａ
で圧縮される冷媒及び冷凍機油が軸周から反密封空間で
ある大気Ｂ中へ漏れるのを阻止するものである。合成樹
脂製リップ部材３０は、機内Ａ側へ向けて湾曲して延び
る内径部３２が、機内Ａの圧力を受けるエラストマ製リ
ップ部材１０の内径部１３を内周側から支承している。[0003] That is, this lip-type seal is
Is press-fitted into the shaft hole 1a of the shaft seal housing 1 via the crimping portion 12 made of an elastomer while the movement in the axial direction is restricted by the step portion 1b formed in the shaft hole 1a and the retaining ring 2. The head 13a formed at the tip of the inner diameter portion 13 of the elastomeric lip member 10 that curves and extends toward the inside A of the machine, which is a sealed space, slides on the outer peripheral surface of the shaft 3 inserted into the shaft hole 1a. In-flight A
This prevents the refrigerant and refrigerating machine oil compressed by the above from leaking from the shaft circumference into the atmosphere B, which is an anti-sealed space. An inner diameter portion 32 of the synthetic resin lip member 30 that curves and extends toward the inside A of the machine supports the inner diameter portion 13 of the elastomer lip member 10 that receives the pressure of the inside A of the machine from the inner circumferential side.
【０００４】なお、文中において「正面」とは密封空間
である機内Ａ側を向いた面のことを言い、「背面」とは
反密封空間である大気Ｂ側を向いた面のことを言い、
「先端」とは機内Ａ側の端部を言い、更に「後端」とは
大気Ｂ側の端部を言う。[0004] In the following description, "front" means a surface facing the inside of the aircraft A, which is a sealed space, and "back" means a surface facing the atmosphere B, which is a non-sealed space.
The “front end” refers to the end on the in-machine A side, and the “rear end” refers to the end on the atmosphere B side.
【０００５】[0005]
【発明が解決しようとする課題】この種のリップ型シー
ルは、エラストマ製リップ部材１０が一体化された外環
２０の内周に、合成樹脂製リップ部材３０及び内環４０
を順次挿入し、外環２０の後端をカシメして組み立てる
際に、このカシメ部２２の形成によって、合成樹脂製リ
ップ部材３０の外径部３１が内環４０を介してエラスト
マ製リップ部材１０の外径部１１の背面に押圧される。
このため、エラストマ製リップ部材１０の外径部１１の
うち、図示されていない環状突起を含む背面側部分１１
ａは、外環２０の先端の内向鍔２１と合成樹脂製リップ
部材３０の外径部３１との間で軸方向に圧縮されるの
で、この圧縮に対する応力によって内径方向への歪（エ
ラストマ材料の移動）εが発生するが、エラストマ製リ
ップ部材１０の外径部１１のうち内向鍔２１よりも正面
側となる部分１１ｂではこのような応力による歪は生じ
ないから、その応力の差によって、エラストマ製リップ
部材１０の内径部１３は矢印Ｆで示すように変位を受
け、その結果、シャフト３の外周面に対するエラストマ
製リップ部材１０のヘッド１３ａの締め代が低下し、漏
れを生じることがあった。This type of lip seal has a lip member 30 made of synthetic resin and an inner ring 40 on the inner periphery of an outer ring 20 in which the lip member 10 made of elastomer is integrated.
Are successively inserted and the rear end of the outer ring 20 is swaged to assemble, and the outer diameter portion 31 of the synthetic resin lip member 30 is formed via the inner ring 40 by the formation of the swaged portion 22. Is pressed against the back surface of the outer diameter portion 11.
Therefore, of the outer diameter portion 11 of the lip member 10 made of the elastomer, the rear side portion 11 including the annular projection (not shown)
Since a is compressed in the axial direction between the inward flange 21 at the tip of the outer ring 20 and the outer diameter portion 31 of the synthetic resin lip member 30, distortion in the inner diameter direction due to the stress due to this compression (elastomer material). Movement) ε is generated, but such a stress does not occur in a portion 11 b of the outer diameter portion 11 of the lip member 10 that is closer to the front than the inward flange 21. The inner diameter portion 13 of the lip member 10 is displaced as indicated by the arrow F, and as a result, the interference of the head 13a of the lip member 10 made of the elastomer with the outer peripheral surface of the shaft 3 is reduced, which may cause leakage. .
【０００６】本発明は、上記のような事情のもとになさ
れたもので、その技術的課題とするところは、リップ型
シールの組立において外環の後端をカシメした時に、エ
ラストマ製リップ部材の外径部の背面側部分に発生する
応力によって、シャフトに対するエラストマ製リップ部
材の内径のヘッドの締め代が低下するのを防止すること
にある。The present invention has been made in view of the above circumstances, and a technical problem thereof is that when the rear end of an outer ring is caulked in assembling a lip-type seal, a lip member made of an elastomer is used. It is another object of the present invention to prevent a reduction in the interference of the head of the inner diameter of the elastomer lip member with respect to the shaft due to the stress generated on the rear side portion of the outer diameter portion.
【０００７】[0007]
【課題を解決するための手段】上述した技術的課題は、
本発明によって有効に解決することができる。すなわち
本発明は、内径部が密封空間側へ延びるエラストマ製リ
ップ部材と、内径側へ屈曲した先端の内向鍔が前記エラ
ストマ製リップ部材の外径部に埋設された外環と、外径
部が前記エラストマ製リップ部材の外径部背面に当接さ
れ内径部が前記密封空間側へ延在されて前記エラストマ
製リップ部材の内径部を内周側から支承する合成樹脂製
リップ部材と、前記外環の後端のカシメ部に支持されて
前記合成樹脂製リップ部材の背面に当接された内環とを
備えるリップ型シールであって、前記外環の内向鍔の内
径縁が前記エラストマ製リップ部材の外径部内における
背面側に偏在するように屈曲され、前記エラストマ製リ
ップ部材の外径部の前記内向鍔より背面側部分に前記内
径縁の外径側に位置する凹部が形成されたものである。Means for Solving the Problems The technical problems described above are:
This can be effectively solved by the present invention. That is, the present invention provides an elastomer lip member having an inner diameter portion extending toward the sealed space, an outer ring in which an inward flange at an end bent toward the inner diameter side is embedded in an outer diameter portion of the elastomer lip member, and an outer diameter portion is provided. A synthetic resin lip member abutting against the back surface of the outer diameter portion of the elastomer lip member and extending the inner diameter portion to the sealed space side to support the inner diameter portion of the elastomer lip member from the inner circumference side; An inner ring supported by a caulking portion at the rear end of the ring and abutting against the back surface of the synthetic resin lip member, wherein the inner rim of an inward flange of the outer ring is formed of the elastomer lip. A member which is bent so as to be unevenly distributed on the back side in the outer diameter portion of the member, and a concave portion which is located on the outer diameter side of the inner diameter edge is formed in a portion of the outer diameter portion of the elastomer lip member on the back side from the inward flange. It is.
【０００８】[0008]
【作用】エラストマ製リップ部材の外径部に埋設された
外環の内向鍔の内径縁が、合成樹脂製リップ部材側に偏
在するように屈曲されているため、外環の後端をカシメ
ることによって合成樹脂製リップ部材の外径部と外環の
内向鍔との間で軸方向に圧縮されるエラストマ製リップ
部材の外径部の背面側部分が、応力によって内径方向へ
移動するのを阻止する。一方、前記エラストマ製リップ
部材の外径部の背面に前記内径縁の外径側に位置して凹
部が形成されているので、圧縮された前記背面側部分の
エラストマがこの凹部を縮小するように移動することに
よって、圧縮による応力を有効に吸収する。このため、
外環の後端のカシメの際にエラストマ製リップ部材の外
径部の背面側部分が内径側へ移動することによる内径部
の締め代減少方向への変位が防止される。The inner edge of the inward flange of the outer ring embedded in the outer diameter portion of the elastomer lip member is bent so as to be unevenly distributed toward the synthetic resin lip member, so that the rear end of the outer ring is caulked. As a result, the rear side portion of the outer diameter portion of the elastomer lip member, which is axially compressed between the outer diameter portion of the synthetic resin lip member and the inward flange of the outer ring, moves in the inner diameter direction due to stress. Block. On the other hand, since a concave portion is formed on the back surface of the outer diameter portion of the elastomer lip member on the outer diameter side of the inner diameter edge, the compressed elastomer on the back side portion reduces this concave portion. By moving, the stress due to compression is effectively absorbed. For this reason,
When the rear end of the outer ring is caulked at the rear end, the rear side portion of the outer diameter portion of the elastomer lip member moves toward the inner diameter side, thereby preventing displacement of the inner diameter portion in the direction of reducing interference.
【０００９】[0009]
【実施例】図１は、本発明に係るリップ型シールの好適
な一実施例を示すものである。すなわちこの実施例によ
れば、後端のカシメ部２２を除く部分が外周の圧着部１
２を含むエラストマ製リップ部材１０の外径部１１に埋
設された外環２０は、内径側へ延びる先端の内向鍔２１
の内径縁２１ａが、前記外径部１１内における合成樹脂
製リップ部材３０側に偏在するように屈曲されている。
また、エラストマ製リップ部材１０の外径部１１におけ
る背面側部分１１ａの背面には、外環２０の内向鍔２１
の内径縁２１ａよりも外径側に位置して、適当な大きさ
の環状の凹部１１ｂが形成されている。なお、その他の
部分の構成は、先に述べた図２のリップ型シールとほぼ
同様であるから、その説明は省略する。FIG. 1 shows a preferred embodiment of a lip seal according to the present invention. That is, according to this embodiment, the portion other than the caulking portion 22 at the rear end is the outer peripheral crimping portion 1.
The outer ring 20 buried in the outer diameter portion 11 of the elastomer lip member 10 including the inner flange 2 has an inward flange 21 at a tip extending toward the inner diameter side.
Is bent so as to be unevenly distributed on the synthetic resin lip member 30 side in the outer diameter portion 11.
The inward flange 21 of the outer ring 20 is provided on the back surface of the back side portion 11 a of the outer diameter portion 11 of the elastomer lip member 10.
An annular concave portion 11b of an appropriate size is formed on the outer diameter side of the inner diameter edge 21a of the first hole. The configuration of the other parts is almost the same as that of the above-described lip-type seal of FIG. 2, and the description thereof is omitted.
【００１０】このリップ型シールの組立においては、従
来と同様、エラストマ製リップ部材１０が一体化された
外環２０の内周に、合成樹脂製リップ部材３０及び内環
４０を順次挿入してから、外環２０の後端のカシメを行
うので、エラストマ製リップ部材１０の外径部１１のう
ちの背面側部分１１ａは、外環２０の先端の内向鍔２１
と合成樹脂製リップ部材３０の外径部３１との間で軸方
向に圧縮されるが、これに伴う前記背面側部分１１ａの
エラストマ材料の内径側への移動は、外環２０の内向鍔
２１の内径縁２１ａが合成樹脂製リップ部材３０側へ向
けて屈曲された前記内向鍔２１の内径縁２１ａによって
阻止される。前記背面側部分１１ａは、その外径側に凹
部１１ｂが形成されているので、軸方向に圧縮された前
記背面側部分１１ａのエラストマは、この凹部１１ｂを
縮小するように移動し、圧縮による応力が吸収・緩和さ
れる。このため、エラストマ製リップ部材１０の内径部
１３には、シャフト３の外周面に対するヘッド１３ａの
締め代を低下させるような背面側と正面側の応力差によ
る変位が発生しない。In assembling the lip-type seal, as in the prior art, the synthetic resin lip member 30 and the inner ring 40 are sequentially inserted into the inner periphery of the outer ring 20 in which the elastomer lip member 10 is integrated. Since the rear end of the outer ring 20 is caulked, the rear side portion 11a of the outer diameter portion 11 of the elastomer lip member 10 is
And the outer diameter portion 31 of the synthetic resin lip member 30 is compressed in the axial direction, and the accompanying movement of the rear side portion 11 a toward the inner diameter side of the elastomer material is caused by the inward flange 21 of the outer ring 20. Of the inward flange 21 bent toward the lip member 30 made of synthetic resin. Since the rear side portion 11a has a concave portion 11b formed on the outer diameter side, the elastomer of the rear side portion 11a compressed in the axial direction moves so as to reduce the concave portion 11b, and the stress due to the compression is reduced. Is absorbed and mitigated. For this reason, the inner diameter portion 13 of the elastomer lip member 10 is not displaced by a stress difference between the back side and the front side, which reduces the interference of the head 13a with the outer peripheral surface of the shaft 3.
【００１１】[0011]
【発明の効果】本発明のリップ型シールによれば、その
組立の際に外環の後端をカシメることによって軸方向に
圧縮されるエラストマ製リップ部材の外径部の背面側部
分が内径方向へ押し出されるように移動することがない
ため、エラストマ製リップ部材の内径部が締め代減少方
向へ変位することが有効に防止され、優れた密封性能を
奏することができる。According to the lip seal of the present invention, the rear side portion of the outer diameter portion of the elastomer lip member, which is compressed in the axial direction by caulking the rear end of the outer ring during assembly, has the inner diameter. Since it does not move so as to be pushed out in the direction, the inner diameter portion of the elastomer lip member is effectively prevented from being displaced in the direction of decreasing the interference, and excellent sealing performance can be achieved.
【図１】本発明に係るリップ型シールの一実施例の使用
状態を軸心を通る平面で切断して示す半断面図である。FIG. 1 is a half sectional view showing a use state of an embodiment of a lip-type seal according to the present invention by cutting along a plane passing through an axis.
【図２】従来のリップ型シールの一例の使用状態を軸心
を通る平面で切断して示す半断面図である。FIG. 2 is a half sectional view showing a use state of an example of a conventional lip-type seal, cut along a plane passing through an axis.
１ ハウジング ３ シャフト １０ エラストマ製リップ部材 １１ 外径部 １１ａ 背面側部分 １１ｂ 凹部 １３ 内径部 ２０ 外環 ２１ 内向鍔 ２１ａ 内径縁 ２２ カシメ部 ３０ 合成樹脂製リップ部材 ４０ 内環 DESCRIPTION OF SYMBOLS 1 Housing 3 Shaft 10 Elastomer lip member 11 Outer diameter part 11a Back side part 11b Depression 13 Inner diameter part 20 Outer ring 21 Inward flange 21a Inner diameter edge 22 Caulking part 30 Synthetic resin lip member 40 Inner ring
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山田 健史 愛知県刈谷市豊田町２丁目１番地 株式 会社豊田自動織機製作所内 (72)発明者 老山 幸一郎 岡山県高梁市落合町阿部1212番地 イー グル工業株式会社岡山工場内 (56)参考文献 特開 平３−223571（ＪＰ，Ａ) 特開 平７−139633（ＪＰ，Ａ) 特開 平４−125363（ＪＰ，Ａ) 実開 平２−43562（ＪＰ，Ｕ) 実開 昭61−186868（ＪＰ，Ｕ) 実開 平５−30637（ＪＰ，Ｕ) 実開 昭62−124371（ＪＰ，Ｕ) 実開 平２−146269（ＪＰ，Ｕ) 実開 平３−17473（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F16J 15/32 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Takeshi Yamada 2-1-1 Toyota-cho, Kariya-shi, Aichi Prefecture Inside Toyota Industries Corporation (72) Inventor Koichiro Oiyama 1212 Abe, Ochiai-cho, Takahashi-shi, Okayama Eagle (56) References JP-A-3-223571 (JP, A) JP-A-7-139633 (JP, A) JP-A-4-125363 (JP, A) JP-A-2-43562 (JP, U) Japanese Utility Model Showa 61-186868 (JP, U) Japanese Utility Model 5-30637 (JP, U) Japanese Utility Model Showa 62-124371 (JP, U) Japanese Utility Model Utility Model 2-146269 (JP, U) Kaihei 3-17473 (JP, U) (58) Field surveyed (Int. Cl. 7 , DB name) F16J 15/32
Claims (1)
製リップ部材と、 内径側へ屈曲した先端の内向鍔が前記エラストマ製リッ
プ部材の外径部に埋設された外環と、 外径部が前記エラストマ製リップ部材の外径部背面に当
接され内径部が前記密封空間側へ延在されて前記エラス
トマ製リップ部材の内径部を内周側から支承する合成樹
脂製リップ部材と、 前記外環の後端のカシメ部に支持されて前記合成樹脂製
リップ部材の背面に当接された内環とを備え、 前記外環の内向鍔の内径縁が前記エラストマ製リップ部
材の外径部内における背面側に偏在するように屈曲さ
れ、前記エラストマ製リップ部材の外径部の前記内向鍔
より背面側部分に前記内径縁の外径側に位置する凹部が
形成されたことを特徴とするリップ型シール。1. An elastomer lip member having an inner diameter portion extending toward a sealed space side, an outer ring having a tip inwardly bent toward the inner diameter side embedded in an outer diameter portion of the elastomer lip member, and an outer diameter portion having an outer diameter portion. A synthetic resin lip member which is in contact with the back surface of the outer diameter portion of the elastomer lip member and whose inner diameter portion extends toward the sealed space to support the inner diameter portion of the elastomer lip member from the inner circumference side; An inner ring supported by a caulking portion at the rear end of the ring and abutting against the back surface of the synthetic resin lip member, wherein an inner diameter edge of an inward flange of the outer ring is within an outer diameter portion of the elastomer lip member. A lip mold, which is bent so as to be unevenly distributed on the back side, and a concave portion located on the outer diameter side of the inner diameter edge is formed in a portion on the back side from the inward flange of the outer diameter portion of the elastomeric lip member. sticker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11969194A JP3293075B2 (en) | 1994-05-10 | 1994-05-10 | Lip type seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11969194A JP3293075B2 (en) | 1994-05-10 | 1994-05-10 | Lip type seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07305775A JPH07305775A (en) | 1995-11-21 |
| JP3293075B2 true JP3293075B2 (en) | 2002-06-17 |
Family
ID=14767678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11969194A Expired - Lifetime JP3293075B2 (en) | 1994-05-10 | 1994-05-10 | Lip type seal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3293075B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100268317B1 (en) * | 1996-07-17 | 2000-10-16 | 이시카와 타다시 | Shaft sealing structure for a compressor |
| US6279914B1 (en) * | 1997-10-24 | 2001-08-28 | Eagle Industry Co., Ltd. | Sealing apparatus |
| JP4559038B2 (en) * | 2003-05-09 | 2010-10-06 | 三菱電線工業株式会社 | Rotating shaft seal |
| JP2006300186A (en) * | 2005-04-19 | 2006-11-02 | Eagle Ind Co Ltd | Shaft sealing device |
| EP2039967B1 (en) * | 2006-07-07 | 2013-02-13 | Eagle Industry Co., Ltd. | Shaft sealing device |
| CN102818031B (en) * | 2012-09-05 | 2015-04-15 | 重庆市嘉龙密封件制造有限公司 | Mine oil-free self-lubricating oil seal |
-
1994
- 1994-05-10 JP JP11969194A patent/JP3293075B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07305775A (en) | 1995-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4026563A (en) | Oil seal with locking bead and O. D. sealing rib | |
| JPWO2006001353A1 (en) | Sealing device | |
| JP3293075B2 (en) | Lip type seal | |
| JP4218189B2 (en) | Oil seal for rotating shaft | |
| JP2001193842A (en) | Lip type seal | |
| JP3166062B2 (en) | Lip type seal | |
| JPH0137255Y2 (en) | ||
| US20040046331A1 (en) | Sealing arrangement | |
| JPH0712762Y2 (en) | Sealing device | |
| JP3338189B2 (en) | Reciprocating sealing device | |
| JPH0446137Y2 (en) | ||
| JP3035499B2 (en) | Dust seal | |
| JP3293074B2 (en) | Lip type seal | |
| JPH0810713Y2 (en) | Sealing device | |
| CN111527334A (en) | Sealing device | |
| JP3762529B2 (en) | Sealing device | |
| JPH0225979Y2 (en) | ||
| JPS6221177Y2 (en) | ||
| JP3533847B2 (en) | Seal ring | |
| JP4564114B2 (en) | Lip type seal | |
| JP7118782B2 (en) | sealing device | |
| JPH08326925A (en) | Sealing device | |
| JPH0720449Y2 (en) | Lip seal | |
| JP2572966Y2 (en) | Sealing device | |
| JPH0720447Y2 (en) | Lip seal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20020213 |
|
| 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 (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090405 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100405 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100405 Year of fee payment: 8 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313117 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100405 Year of fee payment: 8 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100405 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110405 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110405 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120405 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130405 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140405 Year of fee payment: 12 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |