JPS5712167A - Magnetic fluid sealing device - Google Patents

Magnetic fluid sealing device

Info

Publication number
JPS5712167A
JPS5712167A JP8400080A JP8400080A JPS5712167A JP S5712167 A JPS5712167 A JP S5712167A JP 8400080 A JP8400080 A JP 8400080A JP 8400080 A JP8400080 A JP 8400080A JP S5712167 A JPS5712167 A JP S5712167A
Authority
JP
Japan
Prior art keywords
rotary member
yokes
magnetic fluid
permanent magnet
yoke
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.)
Granted
Application number
JP8400080A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6249509B2 (enrdf_load_stackoverflow
Inventor
Kyosaburo Furumura
Shigeki Matsunaga
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.)
NSK Ltd
Original Assignee
NSK Ltd
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 NSK Ltd filed Critical NSK Ltd
Priority to JP8400080A priority Critical patent/JPS5712167A/ja
Publication of JPS5712167A publication Critical patent/JPS5712167A/ja
Publication of JPS6249509B2 publication Critical patent/JPS6249509B2/ja
Granted 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
    • 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
    • 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)
  • Sealing Of Bearings (AREA)
JP8400080A 1980-06-23 1980-06-23 Magnetic fluid sealing device Granted JPS5712167A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8400080A JPS5712167A (en) 1980-06-23 1980-06-23 Magnetic fluid sealing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8400080A JPS5712167A (en) 1980-06-23 1980-06-23 Magnetic fluid sealing device

Publications (2)

Publication Number Publication Date
JPS5712167A true JPS5712167A (en) 1982-01-22
JPS6249509B2 JPS6249509B2 (enrdf_load_stackoverflow) 1987-10-20

Family

ID=13818253

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8400080A Granted JPS5712167A (en) 1980-06-23 1980-06-23 Magnetic fluid sealing device

Country Status (1)

Country Link
JP (1) JPS5712167A (enrdf_load_stackoverflow)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984004372A1 (en) * 1983-04-20 1984-11-08 Applied Motion Products Inc An improved magnetic seal assembly
EP0127472A3 (en) * 1983-05-25 1985-08-28 Ferrofluidics Corporation Ferrofluid-pole-piece magnetic apparatus and method of manufacture thereof
JPS61270521A (ja) * 1985-05-24 1986-11-29 Tohoku Metal Ind Ltd ころがり軸受
JPS6429535U (enrdf_load_stackoverflow) * 1987-08-17 1989-02-22
US4817964A (en) * 1985-09-25 1989-04-04 Ferrofluidics Corporation Ferrofluid exclusion seal and method of assembly
JPH0165425U (enrdf_load_stackoverflow) * 1988-06-28 1989-04-26
JPH0192560U (enrdf_load_stackoverflow) * 1987-12-11 1989-06-16
JPH0247477U (enrdf_load_stackoverflow) * 1988-09-27 1990-03-30
US5118118A (en) * 1988-08-02 1992-06-02 Skf Industrial Trading And Development Company B.V. Sealing assembly with a magnetic liquid
US5152539A (en) * 1987-07-17 1992-10-06 Koyo Seiko Co., Ltd. Ferrofluid seal apparatus
US5238254A (en) * 1987-07-17 1993-08-24 Koyo Seiko Co., Ltd. Ferrofluid seal apparatus
US5267737A (en) * 1992-01-16 1993-12-07 International Business Machines, Corp. Magnetic fluid seal containment shield

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984004372A1 (en) * 1983-04-20 1984-11-08 Applied Motion Products Inc An improved magnetic seal assembly
EP0127472A3 (en) * 1983-05-25 1985-08-28 Ferrofluidics Corporation Ferrofluid-pole-piece magnetic apparatus and method of manufacture thereof
JPS61270521A (ja) * 1985-05-24 1986-11-29 Tohoku Metal Ind Ltd ころがり軸受
US4817964A (en) * 1985-09-25 1989-04-04 Ferrofluidics Corporation Ferrofluid exclusion seal and method of assembly
US5152539A (en) * 1987-07-17 1992-10-06 Koyo Seiko Co., Ltd. Ferrofluid seal apparatus
US5238254A (en) * 1987-07-17 1993-08-24 Koyo Seiko Co., Ltd. Ferrofluid seal apparatus
JPS6429535U (enrdf_load_stackoverflow) * 1987-08-17 1989-02-22
JPH0192560U (enrdf_load_stackoverflow) * 1987-12-11 1989-06-16
JPH0165425U (enrdf_load_stackoverflow) * 1988-06-28 1989-04-26
US5118118A (en) * 1988-08-02 1992-06-02 Skf Industrial Trading And Development Company B.V. Sealing assembly with a magnetic liquid
JPH0247477U (enrdf_load_stackoverflow) * 1988-09-27 1990-03-30
US5267737A (en) * 1992-01-16 1993-12-07 International Business Machines, Corp. Magnetic fluid seal containment shield

Also Published As

Publication number Publication date
JPS6249509B2 (enrdf_load_stackoverflow) 1987-10-20

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