IT1160834B - Dispositivo di tenuta,a fluido magnetico,ad aletta magneticamento permeabile - Google Patents

Dispositivo di tenuta,a fluido magnetico,ad aletta magneticamento permeabile

Info

Publication number
IT1160834B
IT1160834B IT20279/83A IT2027983A IT1160834B IT 1160834 B IT1160834 B IT 1160834B IT 20279/83 A IT20279/83 A IT 20279/83A IT 2027983 A IT2027983 A IT 2027983A IT 1160834 B IT1160834 B IT 1160834B
Authority
IT
Italy
Prior art keywords
magnetic
fining
sealing device
fluid sealing
permeable
Prior art date
Application number
IT20279/83A
Other languages
English (en)
Other versions
IT8320279A0 (it
Inventor
Oscar Pinkus
Jed A Walowit
Original Assignee
Mechanical Tech Inc
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 Mechanical Tech Inc filed Critical Mechanical Tech Inc
Publication of IT8320279A0 publication Critical patent/IT8320279A0/it
Application granted granted Critical
Publication of IT1160834B publication Critical patent/IT1160834B/it

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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
IT20279/83A 1982-03-25 1983-03-24 Dispositivo di tenuta,a fluido magnetico,ad aletta magneticamento permeabile IT1160834B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/361,787 US4440402A (en) 1982-03-25 1982-03-25 Ferrofin magnetic seal with opposed fin-like projections

Publications (2)

Publication Number Publication Date
IT8320279A0 IT8320279A0 (it) 1983-03-24
IT1160834B true IT1160834B (it) 1987-03-11

Family

ID=23423448

Family Applications (1)

Application Number Title Priority Date Filing Date
IT20279/83A IT1160834B (it) 1982-03-25 1983-03-24 Dispositivo di tenuta,a fluido magnetico,ad aletta magneticamento permeabile

Country Status (6)

Country Link
US (1) US4440402A (it)
EP (1) EP0104238A4 (it)
JP (1) JPS59500528A (it)
CA (1) CA1208249A (it)
IT (1) IT1160834B (it)
WO (1) WO1983003453A1 (it)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4696481A (en) * 1985-02-07 1987-09-29 Iversen Arthur H Liquid cooled ferrofluid-type rotating seals
US5806856A (en) * 1992-08-27 1998-09-15 Ferrofluidics Corporation On-site fillable liquid magnetic seal
AU4863093A (en) * 1992-10-08 1994-04-21 Ferrofluidics Corporation Ferrofluidic seal centering ring
JPH07217747A (ja) * 1994-01-31 1995-08-15 Nok Corp 磁性流体シール装置
US5969903A (en) * 1995-02-13 1999-10-19 Seagate Technology, Inc. Magnetic particle trap for hydrodynamic bearing
US5956204A (en) * 1995-02-13 1999-09-21 Seagate Technology, Inc. Magnetic disc drive having magnetic particle trap for hydrodynamic bearing
US6055126A (en) * 1998-07-06 2000-04-25 Seagate Technology, Inc. Disc drive having hydrodynamic labyrinth seal and magnet shield
DE19937873A1 (de) * 1999-08-13 2001-03-15 Alma Mechanik Metallteile Gmbh Magnetdichtung und Verfahren zur Herstellung einer Magnetdichtung
US20060192345A1 (en) * 2003-07-07 2006-08-31 Zhixin Li Magnetic Fluidic Seal with Improved Pressure Capacity
US7188840B2 (en) * 2003-07-07 2007-03-13 Zhixin Li Magnetic fluidic seal with improved pressure capacity
US20070138747A1 (en) * 2005-12-15 2007-06-21 General Electric Company Multi-stage ferrofluidic seal having one or more space-occupying annulus assemblies situated within its interstage spaces for reducing the gas load therein
US8430409B2 (en) * 2007-10-18 2013-04-30 Rigaku Innovative Technologies, Inc. Magnetic fluid seal with precise control of fluid volume at each seal stage
CN108006233B (zh) * 2017-12-14 2020-07-10 广西科技大学 一种梯形极靴套筒式磁流体密封装置
CN112112970B (zh) * 2020-10-30 2021-04-20 清华大学 磁性液体密封装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1642085A (en) * 1923-10-20 1927-09-13 Pochobradsky Bedrich Packing gland for elastic-fluid turbines or the like
US2557140A (en) * 1948-12-23 1951-06-19 Razdowitz Adolph Rotary joint
GB783881A (en) * 1954-03-05 1957-10-02 Vickers Electrical Co Ltd Improvements relating to shaft and like seals
US3097853A (en) * 1961-09-29 1963-07-16 Gen Electric Dynamic seal
GB1224234A (en) * 1968-07-19 1971-03-03 English Electric Co Ltd Turbines
DE2444843C2 (de) * 1973-10-01 1984-03-22 Novatome, 92350 Le-Plessis-Robinson, Hauts-de-Seine Spiralförmige Drehdichtung mit einem Fluid zur Abdichtung einer rotierenden Welle
SU653470A1 (ru) * 1977-12-02 1979-03-25 Ивановский энергетический институт им.В.И.Ленина Магнитожидкостное уплотнение
SU875152A1 (ru) * 1978-12-18 1981-10-23 Предприятие П/Я А-3780 Магнитно-жидкостное уплотнение
US4304411A (en) * 1980-04-17 1981-12-08 Mechanical Technology Incorporated Magnetic/centrifugal-fluid seal
US4335885A (en) * 1980-08-19 1982-06-22 Mechanical Technology Incorporated Plural fluid magnetic/centrifugal seal

Also Published As

Publication number Publication date
CA1208249A (en) 1986-07-22
EP0104238A1 (en) 1984-04-04
US4440402A (en) 1984-04-03
EP0104238A4 (en) 1984-08-10
JPS59500528A (ja) 1984-03-29
WO1983003453A1 (en) 1983-10-13
IT8320279A0 (it) 1983-03-24

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