NL1007854C2 - Poreus met olie geïmpregneerd lager van het hydrodynamische type en lagerinrichting. - Google Patents
Poreus met olie geïmpregneerd lager van het hydrodynamische type en lagerinrichting. Download PDFInfo
- Publication number
- NL1007854C2 NL1007854C2 NL1007854A NL1007854A NL1007854C2 NL 1007854 C2 NL1007854 C2 NL 1007854C2 NL 1007854 A NL1007854 A NL 1007854A NL 1007854 A NL1007854 A NL 1007854A NL 1007854 C2 NL1007854 C2 NL 1007854C2
- Authority
- NL
- Netherlands
- Prior art keywords
- oil
- bearing
- hydrodynamic
- porous
- bearing body
- Prior art date
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
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
-
- 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
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/103—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing
- F16C33/104—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing in a porous body, e.g. oil impregnated sintered sleeve
-
- 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
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
- F16C17/026—Sliding-contact bearings for exclusively rotary movement for radial load only with helical grooves in the bearing surface to generate hydrodynamic pressure, e.g. herringbone grooves
-
- 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
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/102—Construction relative to lubrication with grease as lubricant
-
- 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
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
- F16C33/107—Grooves for generating pressure
-
- 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
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/109—Lubricant compositions or properties, e.g. viscosity
-
- 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
- F16C33/74—Sealings of sliding-contact bearings
-
- 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
- F16C2370/00—Apparatus relating to physics, e.g. instruments
- F16C2370/12—Hard disk drives or the like
-
- 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
- F16C2370/00—Apparatus relating to physics, e.g. instruments
- F16C2370/20—Optical, e.g. movable lenses or mirrors; Spectacles
- F16C2370/22—Polygon mirror
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S384/00—Bearings
- Y10S384/90—Cooling or heating
- Y10S384/902—Porous member
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Sliding-Contact Bearings (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP34578696 | 1996-12-25 | ||
JP34578696 | 1996-12-25 | ||
JP7800197 | 1997-03-28 | ||
JP7800197 | 1997-03-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
NL1007854A1 NL1007854A1 (nl) | 1998-06-29 |
NL1007854C2 true NL1007854C2 (nl) | 2000-04-04 |
Family
ID=26419078
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL1007854A NL1007854C2 (nl) | 1996-12-25 | 1997-12-19 | Poreus met olie geïmpregneerd lager van het hydrodynamische type en lagerinrichting. |
Country Status (5)
Country | Link |
---|---|
US (1) | US5941646A (ko) |
KR (1) | KR100516745B1 (ko) |
DE (1) | DE19757391B4 (ko) |
GB (1) | GB2320743B (ko) |
NL (1) | NL1007854C2 (ko) |
Families Citing this family (42)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2322915B (en) * | 1997-03-06 | 2001-06-06 | Ntn Toyo Bearing Co Ltd | Hydrodynamic type porous oil-impregnated bearing |
NL1012170C2 (nl) * | 1998-05-28 | 2001-03-20 | Ntn Toyo Bearing Co Ltd | Met olie ge´mpregneerde, gesinterde lager van het hydrodynamische type. |
US7988361B1 (en) * | 1999-05-27 | 2011-08-02 | Ntn Corporation | Hydrodynamic type oil-impregnated sintered bearing |
EP1029181B1 (en) * | 1998-07-17 | 2005-04-06 | Koninklijke Philips Electronics N.V. | Dynamic groove bearing comprising a porous lubricant reservoir |
US6250807B1 (en) * | 1998-09-10 | 2001-06-26 | Ntn Corporation | Hydrodynamic type bearing and hydrodynamic type bearing unit |
EP1024294A3 (en) * | 1999-01-29 | 2002-03-13 | Ibiden Co., Ltd. | Motor and turbo-molecular pump |
JP2000240653A (ja) | 1999-02-24 | 2000-09-05 | Ntn Corp | 焼結含油軸受とその製造方法及び情報機器用スピンドルモータ |
US6398415B1 (en) * | 1999-07-09 | 2002-06-04 | Asmo Co., Ltd. | Bearing device using felt member and method of manufacturing same |
TW414277U (en) * | 1999-12-13 | 2000-12-01 | Sunonwealth Electr Mach Ind Co | Joint structure of oiled bearing and rotor shaft |
JP3270757B2 (ja) * | 1999-12-23 | 2002-04-02 | 三星電機株式会社 | 焼結含油ベアリングの表面加工方法及びその装置 |
JP2002213436A (ja) * | 2001-01-19 | 2002-07-31 | Olympus Optical Co Ltd | モータ用流体軸受け装置 |
US20030117906A1 (en) * | 2001-12-20 | 2003-06-26 | Rahman Mohamed Mizanur | Apparatus and method for optimizing hydrodynamic groove shape |
TW547869U (en) * | 2002-07-10 | 2003-08-11 | Hon Hai Prec Ind Co Ltd | Bearing device for motor |
TWI223691B (en) * | 2002-10-08 | 2004-11-11 | Ind Tech Res Inst | Composite fluid dynamic bearing and its manufacturing method |
TW580072U (en) * | 2002-12-27 | 2004-03-11 | Ind Tech Res Inst | Fluid dynamic bearing module |
US20070110348A1 (en) * | 2003-09-12 | 2007-05-17 | Rikuro Obara | Fluid dynamic bearing unit |
CN100432464C (zh) * | 2004-05-18 | 2008-11-12 | 建准电机工业股份有限公司 | 马达轴承的导油构造 |
US7077572B2 (en) * | 2004-06-09 | 2006-07-18 | Sunonwealth Electric Machine Industry Co., Ltd. | Lubricating oil guiding system for motor bearings |
JP2006064171A (ja) * | 2004-07-28 | 2006-03-09 | Minebea Co Ltd | 流体動圧軸受、該流体動圧軸受を備えたスピンドルモータ並びに記録ディスク駆動装置 |
CN100529446C (zh) * | 2004-08-24 | 2009-08-19 | 日立粉末冶金株式会社 | 烧结含油轴承的制造方法 |
TWI314190B (en) * | 2004-11-26 | 2009-09-01 | Delta Electronics Inc | Sleeve bearing structure |
TWI269842B (en) * | 2004-12-10 | 2007-01-01 | Hon Hai Prec Ind Co Ltd | Method for making fluid bearing |
US7347625B2 (en) * | 2004-12-15 | 2008-03-25 | Seagate Technology Llc | Grooving in FDB motor capillary seal |
DE102004062842B3 (de) * | 2004-12-27 | 2006-04-27 | Ab Skf | Lageranordnung |
JP2006183807A (ja) * | 2004-12-28 | 2006-07-13 | Nidec Sankyo Corp | 軸受装置 |
JP2006207753A (ja) * | 2005-01-31 | 2006-08-10 | Nidec Sankyo Corp | 軸受装置及びスピンドルモータ |
US7547143B2 (en) * | 2005-12-09 | 2009-06-16 | Seagate Technology Llc | Fluid dynamic bearing capsule with recirculation paths |
WO2007072775A1 (ja) * | 2005-12-22 | 2007-06-28 | Ntn Corporation | 流体軸受装置 |
TWI334682B (en) * | 2007-01-26 | 2010-12-11 | Delta Electronics Inc | Motor and bearing supporting structure thereof |
WO2008123407A1 (ja) * | 2007-03-30 | 2008-10-16 | Thk Co., Ltd. | 回転ベアリング、回転テーブル装置、テーブル径決定方法 |
JP2009079658A (ja) * | 2007-09-26 | 2009-04-16 | Nippon Densan Corp | 軸受装置、スピンドルモータ、ディスク駆動装置、および軸受装置の製造方法 |
DE102007051774B4 (de) * | 2007-10-30 | 2018-08-02 | Minebea Mitsumi Inc. | Flüssigkeitslager mit verbesserten Abriebeigenschaften |
WO2010071373A2 (ko) | 2008-12-19 | 2010-06-24 | 두산인프라코어 주식회사 | 소결 부시 |
KR101190849B1 (ko) | 2009-10-23 | 2012-10-12 | (주)성헌 | 무급유 마스터 스핀들 |
US9154012B2 (en) | 2010-03-29 | 2015-10-06 | Ntn Corporation | Fluid dynamic bearing device and assembly method for same |
CN102226459B (zh) * | 2011-06-03 | 2013-03-13 | 江苏大学 | 一种轴承的激光微造型自润滑处理方法 |
US8616772B1 (en) | 2013-03-15 | 2013-12-31 | Little Engine, LLC | Conformal wear-resistant bearing assembly |
CN110043564B (zh) * | 2013-03-25 | 2021-03-12 | Ntn株式会社 | 烧结轴承的制造方法、以及振动电机 |
JP6461483B2 (ja) * | 2014-04-04 | 2019-01-30 | Ntn株式会社 | 焼結軸受及びこれを備えた流体動圧軸受装置、並びに焼結軸受の製造方法 |
CN104074872A (zh) * | 2014-07-02 | 2014-10-01 | 南通志邦新材料科技有限公司 | 一种锁油型多孔金属材料轴瓦 |
JP6244323B2 (ja) * | 2015-03-06 | 2017-12-06 | ミネベアミツミ株式会社 | 軸受構造および送風機 |
TWI778714B (zh) * | 2021-07-19 | 2022-09-21 | 東培工業股份有限公司 | 流體動壓軸承結構 |
Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2800373A (en) * | 1953-04-14 | 1957-07-23 | Sessions Clock Co | Self-lubricating bearing |
US3964805A (en) * | 1974-09-27 | 1976-06-22 | The Bendix Corporation | Dynamic fluid reservoir bearing |
GB2064676A (en) * | 1979-11-30 | 1981-06-17 | Gkn Bound Brook Ltd | Bearings |
US4303282A (en) * | 1980-04-04 | 1981-12-01 | General Electric Company | Food processor and bearing |
JPS5817219A (ja) * | 1981-07-23 | 1983-02-01 | Nippon Seiko Kk | 動圧形ラジアル軸受装置 |
JPS6044620A (ja) * | 1983-08-22 | 1985-03-09 | Sankyo Seiki Mfg Co Ltd | 動圧軸受装置 |
JPS6319627U (ko) | 1986-07-22 | 1988-02-09 | ||
JPS6411844A (en) | 1987-07-04 | 1989-01-17 | Minolta Camera Kk | Ink jet printer |
US4820950A (en) * | 1987-03-03 | 1989-04-11 | Copal Company Limited | Fluid Bearing |
EP0349260A1 (en) * | 1988-06-28 | 1990-01-03 | Canon Kabushiki Kaisha | Dynamic pressure bearing device |
EP0655562A2 (en) * | 1993-10-22 | 1995-05-31 | Hitachi Construction Machinery Co., Ltd. | Slide bearing assembly |
US5427456A (en) * | 1994-04-12 | 1995-06-27 | Synektron Corporation | Fluid bearing with asymmetrical groove pattern |
US5683183A (en) * | 1995-09-26 | 1997-11-04 | Nsk Ltd. | Spindle device and bearing device therefor |
US5762423A (en) * | 1995-07-14 | 1998-06-09 | Ntn Corporation | Bearing device, solid resin lubricating composition and porous oil-impregnated bearing |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2227307A (en) * | 1939-03-02 | 1940-12-31 | Gen Motors Corp | Bearing structure |
GB671268A (en) * | 1949-04-12 | 1952-04-30 | Edras | Improvements in or relating to self-lubricating bearings |
US4008788A (en) * | 1973-10-18 | 1977-02-22 | General Electric Company | Lubrication system including lubricant-storing discrete foam particles |
JPS59164822U (ja) * | 1983-04-21 | 1984-11-05 | 日本精工株式会社 | ハイブリツド形滑り軸受 |
JPH07109215B2 (ja) * | 1989-11-10 | 1995-11-22 | 松下電器産業株式会社 | 流体軸受け装置 |
JP2857304B2 (ja) * | 1993-09-21 | 1999-02-17 | 株式会社三協精機製作所 | 軸受装置及びその製造方法 |
JPH08103051A (ja) * | 1994-09-30 | 1996-04-16 | Mabuchi Motor Co Ltd | 小型モータ |
JPH08240225A (ja) * | 1995-03-06 | 1996-09-17 | Sankyo Seiki Mfg Co Ltd | 焼結含油軸受及びそれを備えた電動機 |
JP3637632B2 (ja) * | 1995-05-25 | 2005-04-13 | 松下電器産業株式会社 | 電動機 |
US5746516A (en) * | 1995-08-11 | 1998-05-05 | Hitachi Powdered Metals Co., Ltd. | Porous bearing system having internal grooves and electric motor provided with the same |
US5678929A (en) * | 1996-05-20 | 1997-10-21 | Seagate Technology, Inc. | Grooved hydrodynamic bearing arrangement including a porous lubricant reservoir |
KR100224000B1 (ko) * | 1996-08-19 | 1999-10-15 | 이형도 | 소결함유 베어링 |
-
1997
- 1997-11-26 US US08/979,236 patent/US5941646A/en not_active Expired - Lifetime
- 1997-12-17 KR KR1019970070144A patent/KR100516745B1/ko not_active IP Right Cessation
- 1997-12-19 NL NL1007854A patent/NL1007854C2/nl not_active IP Right Cessation
- 1997-12-19 GB GB9726940A patent/GB2320743B/en not_active Expired - Lifetime
- 1997-12-22 DE DE19757391A patent/DE19757391B4/de not_active Expired - Lifetime
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2800373A (en) * | 1953-04-14 | 1957-07-23 | Sessions Clock Co | Self-lubricating bearing |
US3964805A (en) * | 1974-09-27 | 1976-06-22 | The Bendix Corporation | Dynamic fluid reservoir bearing |
GB2064676A (en) * | 1979-11-30 | 1981-06-17 | Gkn Bound Brook Ltd | Bearings |
US4303282A (en) * | 1980-04-04 | 1981-12-01 | General Electric Company | Food processor and bearing |
JPS5817219A (ja) * | 1981-07-23 | 1983-02-01 | Nippon Seiko Kk | 動圧形ラジアル軸受装置 |
JPS6044620A (ja) * | 1983-08-22 | 1985-03-09 | Sankyo Seiki Mfg Co Ltd | 動圧軸受装置 |
JPS6319627U (ko) | 1986-07-22 | 1988-02-09 | ||
US4820950A (en) * | 1987-03-03 | 1989-04-11 | Copal Company Limited | Fluid Bearing |
JPS6411844A (en) | 1987-07-04 | 1989-01-17 | Minolta Camera Kk | Ink jet printer |
EP0349260A1 (en) * | 1988-06-28 | 1990-01-03 | Canon Kabushiki Kaisha | Dynamic pressure bearing device |
EP0655562A2 (en) * | 1993-10-22 | 1995-05-31 | Hitachi Construction Machinery Co., Ltd. | Slide bearing assembly |
US5427456A (en) * | 1994-04-12 | 1995-06-27 | Synektron Corporation | Fluid bearing with asymmetrical groove pattern |
US5762423A (en) * | 1995-07-14 | 1998-06-09 | Ntn Corporation | Bearing device, solid resin lubricating composition and porous oil-impregnated bearing |
US5683183A (en) * | 1995-09-26 | 1997-11-04 | Nsk Ltd. | Spindle device and bearing device therefor |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 7, no. 95 (M - 209) 21 April 1983 (1983-04-21) * |
PATENT ABSTRACTS OF JAPAN vol. 9, no. 172 (M - 397) 17 July 1985 (1985-07-17) * |
Also Published As
Publication number | Publication date |
---|---|
DE19757391B4 (de) | 2005-10-13 |
NL1007854A1 (nl) | 1998-06-29 |
KR19980064275A (ko) | 1998-10-07 |
US5941646A (en) | 1999-08-24 |
DE19757391A1 (de) | 1998-07-16 |
KR100516745B1 (ko) | 2006-01-12 |
GB2320743A (en) | 1998-07-01 |
GB2320743B (en) | 2000-08-23 |
GB9726940D0 (en) | 1998-02-18 |
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