FR2065847A5 - - Google Patents

Info

Publication number
FR2065847A5
FR2065847A5 FR7028811A FR7028811A FR2065847A5 FR 2065847 A5 FR2065847 A5 FR 2065847A5 FR 7028811 A FR7028811 A FR 7028811A FR 7028811 A FR7028811 A FR 7028811A FR 2065847 A5 FR2065847 A5 FR 2065847A5
Authority
FR
France
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
Application number
FR7028811A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ferrofluidics Corp
Original Assignee
Ferrofluidics Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ferrofluidics Corp filed Critical Ferrofluidics Corp
Application granted granted Critical
Publication of FR2065847A5 publication Critical patent/FR2065847A5/fr
Expired legal-status Critical Current

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
    • 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
    • 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
    • F16C33/762—Sealings of ball or roller bearings by means of a fluid
    • F16C33/763—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap
    • F16C33/765—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap by a magnetic field

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Sealing Of Bearings (AREA)
FR7028811A 1969-10-10 1970-08-05 Expired FR2065847A5 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US86528169A 1969-10-10 1969-10-10
US4024670A 1970-05-25 1970-05-25

Publications (1)

Publication Number Publication Date
FR2065847A5 true FR2065847A5 (en) 1971-08-06

Family

ID=26716878

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7028811A Expired FR2065847A5 (en) 1969-10-10 1970-08-05

Country Status (4)

Country Link
JP (1) JPS519853B1 (en)
DE (1) DE2034213C3 (en)
FR (1) FR2065847A5 (en)
GB (1) GB1312698A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2467318A1 (en) * 1979-07-30 1981-04-17 Litton Systems Inc MAGNETIC OR FERRO-FLUID FLUID BEARING, METHOD FOR MANUFACTURING SAME, MAGNETIC FERROMAGNETIC STRUCTURE LOADING METHOD AND PERMANENT MAGNET COMPRISING SUCH A STRUCTURE
DE3842477A1 (en) * 1988-07-11 1990-01-18 Nihon Densan Kk MAGNETIC FLUID SEAL COMPOSITION

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5832038B2 (en) * 1974-09-19 1983-07-09 オオサカヘンアツキ カブシキガイシヤ Kimitsuyousetsouchi
JPS52100785A (en) * 1976-02-19 1977-08-24 Taisei Porimaa Kk Compensating plate for treating radiation or phantom for measuring absorption ray
IL56763A (en) * 1978-04-10 1981-12-31 Hughes Aircraft Co Cryogenic refrigeration system comprising screw compressorexpander
DE2841163C2 (en) * 1978-09-21 1985-09-12 Siemens AG, 1000 Berlin und 8000 München Electric machine with a rotor with a superconducting field winding
DE2856128C3 (en) * 1978-12-27 1981-08-13 Siemens AG, 1000 Berlin und 8000 München Coolant connection head for an electrical machine, which contains a rotor which is rotatably mounted about an axis and has a superconducting winding which is to be frozen by a coolant
DE3207061C2 (en) * 1982-02-26 1986-09-18 Siemens AG, 1000 Berlin und 8000 München Sealing device with a magnetizable sealing liquid
DE3430479A1 (en) * 1983-08-26 1985-03-07 Ferrofluidics Corp., Nashua, N.H. BEARING ARRANGEMENT WITH INTEGRATED FERROFLUID SEAL
US4478424A (en) * 1984-01-27 1984-10-23 Ferrofluidics Corporation Ferrofluid seal apparatus and method
US4548699A (en) * 1984-05-17 1985-10-22 Varian Associates, Inc. Transfer plate rotation system
US4694213A (en) * 1986-11-21 1987-09-15 Ferrofluidics Corporation Ferrofluid seal for a stationary shaft and a rotating hub
DE3713567C1 (en) * 1987-04-23 1987-12-03 Iris Diesing Multi-stage sealing device with ferrofluid
JPH01255762A (en) * 1988-03-31 1989-10-12 Nippon Ferrofluidics Kk Seal body for sealing magnetic fluid and manufacture thereof
DE3811227C2 (en) * 1988-04-02 1996-04-11 Freudenberg Carl Fa Ferrofluid seal
DE9307447U1 (en) * 1993-05-17 1993-07-22 Friatec-Rheinhütte GmbH & Co., 6200 Wiesbaden Vertical magnetic coupling pump or stirrer
DE19937873A1 (en) * 1999-08-13 2001-03-15 Alma Mechanik Metallteile Gmbh Magnetic seal for sealing gap between housing and rotating component comprises magnet between two pole shoes within housing, outer pole shoe being attached to housing by welding, soldering or using adhesive
DE19938986B4 (en) * 1999-08-17 2008-02-14 Siemens Ag Superconducting device with a refrigeration unit for a rotating superconducting winding
DE10042962C1 (en) 2000-08-31 2002-05-02 Siemens Ag Magnetic bearing to support a rotatable shaft using high-T¶c¶ superconductor material
DE202005005904U1 (en) * 2005-04-07 2006-08-17 Ebm-Papst St. Georgen Gmbh & Co. Kg Bearing arrangement for bearing of swiveling shaft has swiveling shaft of hard ferromagnetic material, which has a permanent magnetic field whereby plain bearing serves as return for magnetic field lines of permanent magnetic field
CN101776149A (en) * 2010-03-01 2010-07-14 北京交通大学 Low-temperature and small-diameter magnetic fluid seal device
DE102012200774A1 (en) * 2012-01-20 2013-07-25 Aktiebolaget Skf Rolling bearing unit e.g. rolling element in wind power plant, has component which is provided in region of immediate surroundings to generate magnetic field that causes attraction of iron with force that is greater than weight of iron
DE102012017805A1 (en) 2012-09-10 2014-03-13 Christian Funke Sealing device for use in synchronous and asynchronous motors, has set of pole shoes that is arranged with permanent magnet, magnetorheological medium, insulator, shielding, insulating layer and sealing counterpart
CN107740866B (en) * 2017-11-03 2023-05-02 广西科技大学 Stepped magnetic fluid sealing device
CN107956881B (en) * 2017-12-13 2023-05-02 广西科技大学 Staggered magnetic fluid sealing device
CN112963548B (en) * 2021-03-23 2021-11-02 清华大学 Magnetic liquid sealing device capable of sealing liquid

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1007372A (en) * 1948-12-23 1952-05-05 Sealing device
FR1119965A (en) * 1954-03-05 1956-06-27 Thomson Houston Comp Francaise Improved seals for rotating shafts and other moving parts
FR1159301A (en) * 1956-10-11 1958-06-26 Const Mecanique Improvements to the stops for rotating shafts subjected to axial thrust

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2786155A (en) * 1953-09-25 1957-03-19 Allis Chalmers Mfg Co Unipolar dynamoelectric machine with sleeve mounted field coil
GB783881A (en) * 1954-03-05 1957-10-02 Vickers Electrical Co Ltd Improvements relating to shaft and like seals
CH409544A (en) * 1961-02-21 1966-03-15 Zahnradfabrik Friedrichshafen Electromagnetically operated multi-plate clutch
FR1297265A (en) * 1961-05-17 1962-06-29 New waterproof seal process and device
US3168666A (en) * 1962-12-26 1965-02-02 Gen Electric Dynamoelectric machine electrical collector assembly using liquid metal
US3501089A (en) * 1968-07-17 1970-03-17 Gen Electric Jet pump ejector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1007372A (en) * 1948-12-23 1952-05-05 Sealing device
FR1119965A (en) * 1954-03-05 1956-06-27 Thomson Houston Comp Francaise Improved seals for rotating shafts and other moving parts
FR1159301A (en) * 1956-10-11 1958-06-26 Const Mecanique Improvements to the stops for rotating shafts subjected to axial thrust

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2467318A1 (en) * 1979-07-30 1981-04-17 Litton Systems Inc MAGNETIC OR FERRO-FLUID FLUID BEARING, METHOD FOR MANUFACTURING SAME, MAGNETIC FERROMAGNETIC STRUCTURE LOADING METHOD AND PERMANENT MAGNET COMPRISING SUCH A STRUCTURE
DE3842477A1 (en) * 1988-07-11 1990-01-18 Nihon Densan Kk MAGNETIC FLUID SEAL COMPOSITION
US5009436A (en) * 1988-07-11 1991-04-23 Nippon Densan Corporation Magnetic fluid seal assembly

Also Published As

Publication number Publication date
GB1312698A (en) 1973-04-04
DE2034213A1 (en) 1971-05-06
DE2034213B2 (en) 1980-06-26
DE2034213C3 (en) 1985-04-25
JPS519853B1 (en) 1976-03-31

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