DE3777551D1 - Ferrofluiddichtung fuer eine feststehenden welle und eine drehnabe. - Google Patents
Ferrofluiddichtung fuer eine feststehenden welle und eine drehnabe.Info
- Publication number
- DE3777551D1 DE3777551D1 DE8787309513T DE3777551T DE3777551D1 DE 3777551 D1 DE3777551 D1 DE 3777551D1 DE 8787309513 T DE8787309513 T DE 8787309513T DE 3777551 T DE3777551 T DE 3777551T DE 3777551 D1 DE3777551 D1 DE 3777551D1
- Authority
- DE
- Germany
- Prior art keywords
- turntub
- ferrofluid
- gasket
- fixed shaft
- shaft
- 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
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
- F16C33/74—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
- 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
- F16C33/1035—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing by a magnetic field acting on a magnetic 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
- F16J15/43—Sealings between relatively-moving surfaces by means of fluid kept in sealing position by magnetic force
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/124—Sealing of shafts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
- H02K5/1677—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
- H02K5/1737—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/086—Structural association with bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
-
- 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
- F16C2380/00—Electrical apparatus
- F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/09—Structural association with bearings with magnetic bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/933,485 US4694213A (en) | 1986-11-21 | 1986-11-21 | Ferrofluid seal for a stationary shaft and a rotating hub |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3777551D1 true DE3777551D1 (de) | 1992-04-23 |
Family
ID=25464053
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8787309513T Expired - Lifetime DE3777551D1 (de) | 1986-11-21 | 1987-10-28 | Ferrofluiddichtung fuer eine feststehenden welle und eine drehnabe. |
Country Status (3)
Country | Link |
---|---|
US (1) | US4694213A (de) |
EP (1) | EP0269264B1 (de) |
DE (1) | DE3777551D1 (de) |
Families Citing this family (52)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4795275A (en) * | 1987-08-12 | 1989-01-03 | Digital Equipment Corporation | Hydrodynamic bearing |
US5112142A (en) * | 1987-08-12 | 1992-05-12 | Digital Equipment Corporation | Hydrodynamic bearing |
DE3811227C2 (de) * | 1988-04-02 | 1996-04-11 | Freudenberg Carl Fa | Ferrofluiddichtung |
US4890850A (en) * | 1988-04-18 | 1990-01-02 | Ferrofluidics Corporation | Tapered ferrofluid seal |
DE3828081A1 (de) * | 1988-04-29 | 1989-11-09 | Papst Motoren Gmbh & Co Kg | Abdichtvorrichtung fuer in waelzlagern rotierende bauteile |
JPH0612128B2 (ja) * | 1988-06-22 | 1994-02-16 | 株式会社日立製作所 | 軸受装置 |
USRE35718E (en) * | 1988-06-22 | 1998-01-27 | Hitachi, Ltd. | Bearing apparatus |
GB2231372B (en) * | 1989-05-12 | 1993-07-21 | Bredport Limited | Self-acting air bearing spindle for disk drive |
JPH02308119A (ja) * | 1989-05-23 | 1990-12-21 | Canon Inc | 偏向走査モータ |
SE467271B (sv) * | 1989-06-21 | 1992-06-22 | Skf Nova Ab | Glidlager med en hylsa av magnetiserbart material |
JP2966433B2 (ja) * | 1989-07-19 | 1999-10-25 | 株式会社日立製作所 | 磁性流体軸受装置あるいはこの装置を具備するモータ |
DE3924434A1 (de) * | 1989-07-24 | 1991-01-31 | Freudenberg Carl Fa | Ferrofluid-dichtung |
US5142174A (en) * | 1990-03-16 | 1992-08-25 | Ide Russell D | Low-profile disk drive motor with deflecting-pad bearings |
US5007513A (en) * | 1990-04-03 | 1991-04-16 | Lord Corporation | Electroactive fluid torque transmission apparatus with ferrofluid seal |
US5325006A (en) * | 1990-04-27 | 1994-06-28 | Hitachi, Ltd. | Sealed magnetic fluid bearing for polygon mirror drive motor |
US5214326A (en) * | 1990-09-01 | 1993-05-25 | Nippon Densan Corporation | Spindle motor with magnetic shield for magnetic fluid seal |
US5160865A (en) * | 1990-12-03 | 1992-11-03 | Quantum Corporation | Disk assembly with thermally isolated in-hub spindle motor |
RU2092957C1 (ru) * | 1992-01-24 | 1997-10-10 | Честер С. Хаджек | Привод шпиндельного диска |
EP0623255B1 (de) * | 1992-01-24 | 1996-09-18 | HAJEC, Chester S. | Plattenspindelmotor |
US5161900A (en) * | 1992-04-10 | 1992-11-10 | International Business Machines, Corp. | Self-contained low power fluid bearing and bearing seal |
US5806856A (en) * | 1992-08-27 | 1998-09-15 | Ferrofluidics Corporation | On-site fillable liquid magnetic seal |
US5474302A (en) * | 1992-08-27 | 1995-12-12 | Ferrofluidics Corporation | On-site fillable ferrofluidic seal |
AU4863093A (en) * | 1992-10-08 | 1994-04-21 | Ferrofluidics Corporation | Ferrofluidic seal centering ring |
JP2689834B2 (ja) * | 1992-12-11 | 1997-12-10 | 株式会社日立製作所 | モートル,ミラーモートルおよびレーザビームプリンター |
JP2890159B2 (ja) * | 1993-04-13 | 1999-05-10 | ミネベア株式会社 | Oa機器用スピンドルモータ |
JP2864941B2 (ja) * | 1993-04-27 | 1999-03-08 | 株式会社日立製作所 | 回転体軸受装置,モータおよびポリゴンミラーモータ |
JP2541789B2 (ja) * | 1994-01-07 | 1996-10-09 | インターナショナル・ビジネス・マシーンズ・コーポレイション | デ―タ記憶ディスク・ドライブ |
JP3541325B2 (ja) * | 1994-04-01 | 2004-07-07 | 株式会社フェローテック | 動圧軸受装置 |
US5834870A (en) * | 1994-04-28 | 1998-11-10 | Hitachi, Ltd. | Oil impregnated porous bearing units and motors provided with same |
US5675199A (en) * | 1994-05-17 | 1997-10-07 | Sankyo Seiki Mfg. Co., Ltd. | Bearing device with a primary and secondary magnetic fluid sealing mechanism |
US5660397A (en) * | 1994-09-23 | 1997-08-26 | Holtkamp; William H. | Devices employing a liquid-free medium |
US5598908A (en) * | 1995-06-05 | 1997-02-04 | Gse, Inc. | Magnetorheological fluid coupling device and torque load simulator system |
JP3200556B2 (ja) * | 1996-01-30 | 2001-08-20 | 株式会社日立製作所 | 磁性流体軸受ユニットとこれを備えたモータ |
US5957589A (en) * | 1997-12-10 | 1999-09-28 | International Business Machine Corporation | Fluid bearing seal and support structure |
JP3462982B2 (ja) * | 1998-03-16 | 2003-11-05 | 日本電産株式会社 | 動圧流体軸受装置及び電動機 |
DE10044106C2 (de) | 1999-09-30 | 2002-02-28 | Prec Motors Deutsche Minebea G | Spindelmotor mit Magnetfluiddichtung |
JP3578948B2 (ja) * | 1999-10-01 | 2004-10-20 | 日本電産株式会社 | モータ |
US6279490B1 (en) | 1999-10-08 | 2001-08-28 | Etec Systems, Inc. | Epicyclic stage |
US7149323B2 (en) * | 2001-02-13 | 2006-12-12 | Matsushita Electric Industrial Co., Ltd. | Speaker |
JP2003013957A (ja) * | 2001-04-24 | 2003-01-15 | Ferrotec Corp | 磁性流体を使用したhdd用ピボット軸受 |
US6492753B2 (en) | 2002-03-08 | 2002-12-10 | Dura-Trac Motors, Inc. | Brushless permanent magnet motor with variable axial rotor/stator alignment to increase speed capability |
US7048520B1 (en) | 2002-04-16 | 2006-05-23 | Mccarthy James | Multistage sealed coolant pump |
US8007176B2 (en) * | 2003-06-27 | 2011-08-30 | Ferrotec Corporation | Dynamic pressure bearing and rotation machine employing same |
US6943478B2 (en) * | 2003-11-14 | 2005-09-13 | Dura-Trac Motors, Inc. | Brushless permanent magnet wheel motor with variable axial rotor/stator alignment |
US7956499B2 (en) * | 2005-06-02 | 2011-06-07 | Seagate Technology Llc | Motor magnetic force attenuator |
US7129609B1 (en) * | 2005-08-30 | 2006-10-31 | Ferrolabs, Inc. | Magneto-fluidic seal with wide working temperature range |
DE102006052002B3 (de) * | 2006-11-03 | 2007-11-22 | Dtg - Development & Technology Gmbh | Magnetflüssigkeitsdichtung |
DE102006062206B4 (de) * | 2006-12-22 | 2011-06-16 | Minebea Co., Ltd. | Fluiddynamisches Lager mit axialer Vorspannung |
US7758320B2 (en) | 2007-05-03 | 2010-07-20 | Tank, Inc. | Two-stage hydrodynamic pump and method |
US8114024B2 (en) * | 2007-08-20 | 2012-02-14 | Interson Corporation | Seal for a rotating shaft |
CN108331837B (zh) * | 2018-01-29 | 2020-05-12 | 燕山大学 | 一种磁流变液静压支承轴承 |
CN108374894B (zh) * | 2018-02-11 | 2020-08-18 | 广西科技大学 | 一种嵌入型磁流体密封装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2034213C3 (de) * | 1969-10-10 | 1985-04-25 | Ferrofluidics Corp., Burlington, Mass. | Magnetdichtung zur Abdichtung von Dichtungsspalten |
DE1956759C3 (de) * | 1969-11-12 | 1974-06-12 | Dornier System Gmbh, 7990 Friedrichshafen | Spaltdichtung zwischen einer Fläche und einem relativ zu dieser Fläche beweglichen und mit der Fläche einen abgeschlossenen Innenraum bildenden Körper mit einer der Fläche gegenüberliegenden Dichtleiste |
US4043612A (en) * | 1975-06-06 | 1977-08-23 | Ampex Corporation | Bearing structure |
SU1121520A1 (ru) * | 1983-07-27 | 1984-10-30 | Специальное Конструкторско-Технологическое Бюро "Полюс" При Ивановском Ордена "Знак Почета" Энергетическом Институте Им.В.И.Ленина | Магнитогидродинамический подшипник |
US4630943A (en) * | 1983-10-27 | 1986-12-23 | Ferrofluidics Corporation | Ferrofluid bearing and seal apparatus |
US4565379A (en) * | 1984-05-26 | 1986-01-21 | Gmn Georg Muller Nurnberg Gmbh | Magnetic fluid seal |
-
1986
- 1986-11-21 US US06/933,485 patent/US4694213A/en not_active Expired - Fee Related
-
1987
- 1987-10-28 DE DE8787309513T patent/DE3777551D1/de not_active Expired - Lifetime
- 1987-10-28 EP EP87309513A patent/EP0269264B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0269264A2 (de) | 1988-06-01 |
EP0269264A3 (en) | 1989-02-08 |
EP0269264B1 (de) | 1992-03-18 |
US4694213A (en) | 1987-09-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3777551D1 (de) | Ferrofluiddichtung fuer eine feststehenden welle und eine drehnabe. | |
ATA275187A (de) | Gasdichtungsanordnung fuer eine welle | |
DE3786085T2 (de) | Dichtungsmaterial und daraus hergestellte dichtung. | |
DE69000543D1 (de) | Wellenabdichtung fuer eine turbomaschine. | |
DE58901810D1 (de) | Wellendichtung. | |
DE3670898D1 (de) | Dichtung. | |
DE68911221T2 (de) | Wellendichtung. | |
DE3762142D1 (de) | Dichtungs- und sicherungsring fuer die schaufeln einer turbomaschine. | |
DE3688194T2 (de) | Dichtung fuer gewinderohrverbindung. | |
DE3761851D1 (de) | Dichtung fuer zylinderkopfdeckel und aehnliches. | |
DE3689120D1 (de) | Abdichtungsverfahren fuer lagerzusammenbau. | |
DE69012143D1 (de) | Turbolader mit verbesserter wälzlagerung der welle. | |
DE3669192D1 (de) | Radialwellendichtring. | |
DE3784302D1 (de) | Antriebswelle. | |
DE69022364T2 (de) | Wellendichtungsanordnung. | |
DE3578008D1 (de) | Bedienungsorgan fuer oefen und dergleichen. | |
DE3768961D1 (de) | Schlagwerkabschaltung. | |
DE3672696D1 (de) | Wellendichtung. | |
DE59007230D1 (de) | Dichtungsanordnung für eine Welle. | |
ATE42809T1 (de) | Schutzvorrichtung fuer eine welle. | |
DE59102407D1 (de) | Wellenabdichtung. | |
DE3761697D1 (de) | Dichtung fuer ventile. | |
DE3774051D1 (de) | Dichtung. | |
DE3787712D1 (de) | Dichtung. | |
DE58906311D1 (de) | Aufgebaute Welle. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |