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FR2241859A1 - Permanent magnet system with variable adhesion strength - uses ferromagnetic pole core and housing with permanent magnets and electromagnet - Google Patents

Permanent magnet system with variable adhesion strength - uses ferromagnetic pole core and housing with permanent magnets and electromagnet

Info

Publication number
FR2241859A1
FR2241859A1 FR7427865A FR7427865A FR2241859A1 FR 2241859 A1 FR2241859 A1 FR 2241859A1 FR 7427865 A FR7427865 A FR 7427865A FR 7427865 A FR7427865 A FR 7427865A FR 2241859 A1 FR2241859 A1 FR 2241859A1
Authority
FR
France
Prior art keywords
housing
magnet system
permanent magnet
electromagnet
core
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
FR7427865A
Other languages
French (fr)
Other versions
FR2241859B3 (en
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.)
Deutsche Edelstahlwerke AG
Original Assignee
Deutsche Edelstahlwerke AG
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 Deutsche Edelstahlwerke AG filed Critical Deutsche Edelstahlwerke AG
Publication of FR2241859A1 publication Critical patent/FR2241859A1/en
Application granted granted Critical
Publication of FR2241859B3 publication Critical patent/FR2241859B3/fr
Granted 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
    • H01F7/206—Electromagnets for lifting, handling or transporting of magnetic pieces or material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/04—Means for releasing the attractive force
    • 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
    • H01F7/206—Electromagnets for lifting, handling or transporting of magnetic pieces or material
    • H01F2007/208—Electromagnets for lifting, handling or transporting of magnetic pieces or material combined with permanent magnets

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Coating Apparatus (AREA)

Abstract

The permanent magnet system consists of a housing cylinder (circular or polyhedral cross-section) of soft ferromagnetic material into which a ferromagnetic pole-core is inserted leaving a gap. Except for some area at one end the gap is filled by one or more permanent magnets of perpendicular polarisation relative to the housing axis. The housing and the pole-core have then opposite magnetic polarity and both ends form then a magnetic adhesion plane. To secure single end adhesion a top cover of nonmagnetic material can be used. In the free gap between housing and pole core at the bottom an electromagnetic coil is inserted with wire connections to the top cover.
FR7427865A 1973-08-22 1974-08-12 Permanent magnet system with variable adhesion strength - uses ferromagnetic pole core and housing with permanent magnets and electromagnet Granted FR2241859A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732342223 DE2342223A1 (en) 1973-08-22 1973-08-22 PERMANENT MAGNETIC ADHESIVE SYSTEM WITH CHANGEABLE ADHESIVE FORCE

Publications (2)

Publication Number Publication Date
FR2241859A1 true FR2241859A1 (en) 1975-03-21
FR2241859B3 FR2241859B3 (en) 1977-06-10

Family

ID=5890329

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7427865A Granted FR2241859A1 (en) 1973-08-22 1974-08-12 Permanent magnet system with variable adhesion strength - uses ferromagnetic pole core and housing with permanent magnets and electromagnet

Country Status (4)

Country Link
DE (1) DE2342223A1 (en)
ES (1) ES429417A1 (en)
FR (1) FR2241859A1 (en)
NL (1) NL7410499A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0231534A1 (en) * 1986-01-15 1987-08-12 Speciaal-Machinefabriek J.H. van Uitert B.V. Device for conveying tins from a pallet onto a conveyor belt
EP0254939A1 (en) * 1986-07-28 1988-02-03 TECNOMAGNETE S.p.A. Magnetic gripping apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0231534A1 (en) * 1986-01-15 1987-08-12 Speciaal-Machinefabriek J.H. van Uitert B.V. Device for conveying tins from a pallet onto a conveyor belt
EP0254939A1 (en) * 1986-07-28 1988-02-03 TECNOMAGNETE S.p.A. Magnetic gripping apparatus
US4847582A (en) * 1986-07-28 1989-07-11 Tecnomagnete S.P.A. Magnetic gripping apparatus

Also Published As

Publication number Publication date
NL7410499A (en) 1975-02-25
ES429417A1 (en) 1976-09-01
FR2241859B3 (en) 1977-06-10
DE2342223A1 (en) 1975-02-27

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