GB1178733A - Magnetic Structures - Google Patents

Magnetic Structures

Info

Publication number
GB1178733A
GB1178733A GB6259/67A GB625967A GB1178733A GB 1178733 A GB1178733 A GB 1178733A GB 6259/67 A GB6259/67 A GB 6259/67A GB 625967 A GB625967 A GB 625967A GB 1178733 A GB1178733 A GB 1178733A
Authority
GB
United Kingdom
Prior art keywords
polepieces
electromagnet
air gap
permanent magnet
feb
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
Application number
GB6259/67A
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Publication of GB1178733A publication Critical patent/GB1178733A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/20—Electromagnets; Actuators including electromagnets without armatures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0205—Magnetic circuits with PM in general
    • H01F7/0226—PM with variable field strength

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)

Abstract

1,178,733. Magnets. THOMSON C.S.F. 9 Feb., 1967 [18 Feb., 1966], No. 6259/67. Heading H1P. The magnetic flux density in an air gap between the polepieces of a permanent magnet is controlled by an electromagnet having a core bridging the air gap and insulated from the polepieces by non-magnetic layers and an excitation winding carrying the controlling current. As shown, Fig. 1, a U-shaped permanent magnet is provided with polepieces 2, 3 which define an air gap 4. An electromagnet 5 has the ends of its core separated from the polepieces 2, 3 by non-magnetic sheets 9, e.g. of " Duralumin " (Registered Trade Mark), and the coil 6 of the electromagnet is energized by a variable current. In a modification, Fig. 2 (not shown), the U-shaped permanent magnet is replaced by a pair of bar magnets extending parallel to one another and being provided with polepieces at their ends remote from the electromagnet to define a second air gap in which a constant magnetic field intensity is produced.
GB6259/67A 1966-02-18 1967-02-09 Magnetic Structures Expired GB1178733A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR50200A FR1475013A (en) 1966-02-18 1966-02-18 Adjustment device for permanent magnet structures

Publications (1)

Publication Number Publication Date
GB1178733A true GB1178733A (en) 1970-01-21

Family

ID=8601738

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6259/67A Expired GB1178733A (en) 1966-02-18 1967-02-09 Magnetic Structures

Country Status (4)

Country Link
US (1) US3454838A (en)
DE (1) DE1589570A1 (en)
FR (1) FR1475013A (en)
GB (1) GB1178733A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4890331U (en) * 1972-02-01 1973-10-30
US3899979A (en) * 1973-02-22 1975-08-19 Buryan Associates Magnetic suspension systems for vehicles
FR2246247B1 (en) * 1973-10-05 1978-03-24 Stasse Roland
EP0311294A3 (en) * 1987-10-05 1990-08-22 THE GENERAL ELECTRIC COMPANY, p.l.c. Magnet systems
US7770417B2 (en) 2005-11-18 2010-08-10 Santoni S.P.A. Magnetic actuator, particularly for selection devices in hosiery knitting machines or the like

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2718606A (en) * 1952-08-02 1955-09-20 Gen Electric Combination electromagnet-permanent magnet focusing devices
US3069602A (en) * 1959-05-28 1962-12-18 Glenn M Stout Magnetic device
US3146381A (en) * 1960-09-12 1964-08-25 Vente D Aimants Allevard Ugine Magnetic force control or switching system

Also Published As

Publication number Publication date
US3454838A (en) 1969-07-08
DE1589570A1 (en) 1970-03-26
FR1475013A (en) 1967-03-31

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