IT1128663B - PERMANENT MAGNET BEARING AND MAGNETIC FLUID AND PROCEDURE TO PRODUCE IT - Google Patents

PERMANENT MAGNET BEARING AND MAGNETIC FLUID AND PROCEDURE TO PRODUCE IT

Info

Publication number: IT1128663B
Authority: IT; Italy
Prior art keywords: procedure; produce; permanent magnet; magnetic fluid; magnet bearing
Prior art date: 1979-07-30

Application number

IT49355/80A

Other languages

Italian (it)

Other versions

IT8049355A0 (en

Inventor

George J Hoffmann

Original Assignee

Litton Systems 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.)

1979-07-30

Filing date

1980-07-28

Publication date

1986-06-04

1980-07-28 Application filed by Litton Systems Inc filed Critical Litton Systems Inc

1980-07-28 Publication of IT8049355A0 publication Critical patent/IT8049355A0/en

1986-06-04 Application granted granted Critical

1986-06-04 Publication of IT1128663B publication Critical patent/IT1128663B/en

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/0273—Imparting anisotropy
- H01F41/028—Radial anisotropy
- 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
- 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
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0231—Magnetic circuits with PM for power or force generation
- H01F7/0236—Magnetic suspension or levitation

Landscapes

Engineering & Computer Science (AREA)
General Engineering & Computer Science (AREA)
Power Engineering (AREA)
Mechanical Engineering (AREA)
Physics & Mathematics (AREA)
Electromagnetism (AREA)
Manufacturing & Machinery (AREA)
Chemical & Material Sciences (AREA)
Oil, Petroleum & Natural Gas (AREA)
Magnetic Bearings And Hydrostatic Bearings (AREA)

IT49355/80A 1979-07-30 1980-07-28 PERMANENT MAGNET BEARING AND MAGNETIC FLUID AND PROCEDURE TO PRODUCE IT IT1128663B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US6219779A	1979-07-30	1979-07-30

Publications (2)

Publication Number	Publication Date
IT8049355A0 IT8049355A0 (en)	1980-07-28
IT1128663B true IT1128663B (en)	1986-06-04

Family

ID=22040823

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT49355/80A IT1128663B (en)	1979-07-30	1980-07-28	PERMANENT MAGNET BEARING AND MAGNETIC FLUID AND PROCEDURE TO PRODUCE IT

Country Status (7)

Country	Link
JP (1)	JPS5642722A (en)
CA (1)	CA1149852A (en)
DE (1)	DE3028454A1 (en)
FR (1)	FR2467318A1 (en)
GB (2)	GB2058953B (en)
IL (1)	IL60597A0 (en)
IT (1)	IT1128663B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL8602343A (en) *	1986-09-16	1988-04-18	Skf Ind Trading & Dev	BEARING ASSEMBLY.
GB2222679B (en) *	1988-03-15	1991-10-16	Baroid Technology Inc	Accelerometers
JPH04313748A (en) *	1991-01-23	1992-11-05	Konica Corp	Photographic unit
JP2599459Y2 (en) *	1991-03-15	1999-09-06	エヌオーケー株式会社	Magnetic fluid bearing
ES2086711T3 (en) *	1991-07-11	1996-07-01	Laube Hans Juergen	MAGNETIC BODY COMPOSED OF SEVERAL INDIVIDUAL MAGNETIC BODIES AND PERMANENT MAGNETIC LEVITATION BEARING WITH A GLOBAL MAGNETIC BODY COMPOSED OF SEVERAL INDIVIDUAL MAGNETS.
JPH0728599U (en) *	1993-11-09	1995-05-30	株式会社プラスパ	Small chip stacking craft and chip materials
DE10244495A1 (en) *	2002-09-25	2004-04-08	Saurer Gmbh & Co. Kg	Textile machine with a variety of jobs
JP2008502219A (en) *	2004-06-03	2008-01-24	ティンファニー・コーポレーション	Acoustic transducer including a plurality of coaxially arranged diaphragms
US9462388B2 (en)	2004-06-03	2016-10-04	Tymphany Hk Limited	Acoustic transducer comprising a plurality of coaxially arranged diaphragms
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

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1052192B (en) *	1956-07-14	1959-03-05	Philips Nv	Sealing for a shaft duct through the wall of a space containing fine iron particles
GB842531A (en) *	1958-12-24	1960-07-27	Mullard Ltd	Permanent magnets
DE2034213C3 (en) *	1969-10-10	1985-04-25	Ferrofluidics Corp., Burlington, Mass.	Magnetic seal for sealing sealing gaps
US3620584A (en) *	1970-05-25	1971-11-16	Ferrofluidics Corp	Magnetic fluid seals
GB1413118A (en) *	1972-12-08	1975-11-05	Godsill J K	Lubrication
US3726574A (en) *	1971-08-13	1973-04-10	Litton Systems Inc	Ferrohydrodynamic low-friction bearing with volume compensation
US3746407A (en) *	1971-08-13	1973-07-17	Litton Systems Inc	Ferrohydrodynamic low friction bearing
DE2213465C3 (en) *	1972-03-20	1986-02-13	Padana AG, Zug	Electromagnetic bearing element
USRE27955E (en) *	1972-05-19	1974-04-02		Bearing arrangement with magnetic fluid defining bearing pads
DE2245039B2 (en) *	1972-09-14	1976-01-02	Daimler-Benz Ag, 7000 Stuttgart	bearings
US3918773A (en) *	1974-01-07	1975-11-11	Litton Systems Inc	Magnetic field responsive hydrodynamic bearing
DE2420825C3 (en) *	1974-04-30	1980-04-17	Padana Ag, Zug (Schweiz)	Magnetic bearing of a rotor
US4065188A (en) *	1975-02-10	1977-12-27	Strathearn Audio Limited	Linear bearing for parallel tracking arm
US4043612A (en) *	1975-06-06	1977-08-23	Ampex Corporation	Bearing structure

1980
- 1980-07-15 IL IL60597A patent/IL60597A0/en unknown
- 1980-07-16 CA CA000356348A patent/CA1149852A/en not_active Expired
- 1980-07-24 GB GB8024332A patent/GB2058953B/en not_active Expired
- 1980-07-26 DE DE19803028454 patent/DE3028454A1/en not_active Withdrawn
- 1980-07-28 IT IT49355/80A patent/IT1128663B/en active
- 1980-07-29 FR FR8016694A patent/FR2467318A1/en active Granted
- 1980-07-30 JP JP10376080A patent/JPS5642722A/en active Pending
1982
- 1982-10-18 GB GB08229706A patent/GB2124033B/en not_active Expired

Also Published As

Publication number	Publication date
GB2058953B (en)	1983-05-05
IT8049355A0 (en)	1980-07-28
GB2058953A (en)	1981-04-15
GB2124033B (en)	1984-08-01
CA1149852A (en)	1983-07-12
DE3028454A1 (en)	1981-02-19
IL60597A0 (en)	1980-09-16
FR2467318B1 (en)	1984-08-10
JPS5642722A (en)	1981-04-21
GB2124033A (en)	1984-02-08
FR2467318A1 (en)	1981-04-17

Publication	Publication Date	Title
DD159959A3 (en)	1983-04-20	ANISOTROPE PERMANENT MAGNETS
IT7922137A0 (en)	1979-04-24	WATER METER INCLUDING A FERROMAGNETIC MAGNETORESISTOR COUPLED WITH A ROTATING PERMANENT MAGNET.
SE7613605L (en)	1977-06-05	MAGNETIC HALLER PLATE WITH PERMANENT MAGNETS AND ELECTRO-PERMANENT MAGNETS
NL189735C (en)	1993-07-01	MAGNETIC RECORDING AND / OR DISPLAYING DEVICE.
IT1068343B (en)	1985-03-21	PERMANENT MAGNET AND PROCEDURE FOR ITS MANUFACTURE
AT382258B (en)	1987-02-10	MATRIX-TIED PERMANENT MAGNET
IT1128663B (en)	1986-06-04	PERMANENT MAGNET BEARING AND MAGNETIC FLUID AND PROCEDURE TO PRODUCE IT
IT7825421A0 (en)	1978-07-06	MAGNETIC FILTER WITH PERMANENT MAGNETS.
DK489877A (en)	1978-05-05	PERMANENT MAGNETIC REGISTRATION PROCEDURE
MX148615A (en)	1983-05-18	IMPROVEMENTS IN PERMANENT CALENDAR
IT1124316B (en)	1986-05-07	PERMANENT MAGNET GENERATOR
FR2468005B1 (en)	1987-02-27	PERMANENT MAGNET PUMP
BE877631A (en)	1979-11-05	FE-CR-CO ALLOY PERMANENT MAGNETS WITH IMPROVED MAGNETIC PROPERTIES
IT1067468B (en)	1985-03-16	PROCEDURE FOR MAGNETIZATION AND ADJUSTMENT OF A PERMANENT MAGNET
ATA83582A (en)	1987-01-15	FRICTION-FREE PERMANENT MAGNETIC BEARING
IT1149300B (en)	1986-12-03	STRIKER WITH MAGNETIC ATTRACTION AND CLOSURE
SE7908121L (en)	1980-04-05	MAGNETIC CORE FOR THREE-DIMENSIONAL MAGNET FIELDS
DD132218A5 (en)	1978-09-06	PERMANENT MAGNETIC PLASTER
IT7919973A0 (en)	1979-02-07	PROCEDURE FOR THE PREPARATION OF FERRITE POWDERS AND POWDERS OR PERMANENT MAGNETS SO OBTAINED.
NL7902697A (en)	1979-10-10	MAGNETIC RECORDING AND / OR DISPLAY DEVICE.
FR2472106B1 (en)	1985-11-29	PERMANENT MAGNETIC TRANSVERSE BEARING
IT7826123A0 (en)	1978-07-26	AND/OR ROTOR MAGNETS). PROCEDURE AND DEVICE FOR MAGNETIZATION ON BOTH SIDES OF THE SURFACES OF BODIES TO BE MAGNETIZED (ESPECIALLY MAGNETIC RODS OF LOCKS
IT1114537B (en)	1986-01-27	PERMANENT MAGNET METHOD FOR MANUFACTURING IT AND APPARATUS FOR REALIZING THE METHOD
JPS5287696A (en)	1977-07-21	Permanent magnet with minutely spaced magnetization and method of magnetization thereof
IT1066328B (en)	1985-03-04	ALTERNATOR WITH PERMANENT MAGNET ROTOR