GB1196228A - Improvements in or relating to Magnets - Google Patents

Improvements in or relating to Magnets

Info

Publication number
GB1196228A
GB1196228A GB54871/68A GB5487168A GB1196228A GB 1196228 A GB1196228 A GB 1196228A GB 54871/68 A GB54871/68 A GB 54871/68A GB 5487168 A GB5487168 A GB 5487168A GB 1196228 A GB1196228 A GB 1196228A
Authority
GB
United Kingdom
Prior art keywords
tube
slit
electromagnet
magnetic
magnet
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
GB54871/68A
Inventor
Robert L Rowe
Donald Peccerill
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1196228A publication Critical patent/GB1196228A/en
Expired legal-status Critical Current

Links

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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/033—Magnet

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Non-Mechanical Conveyors (AREA)
  • Magnetic Treatment Devices (AREA)

Abstract

1,196,228. Permanent magnets; magnetic compositions. R. L. ROWE, and D. PECCERILL. 19 Nov., 1968 [21 Nov., 1967], No. 54871/68. Headings H1P and H1H. [Also in Division B3] Anisotropic magnetic particles distributed in a binder formed into a tubular member are aligned by means of a core or magnet lying within the tube co-operating with magnets arranged outside the tube. As shown, Fig. 2, the tubular magnet is extruded by means of a die 9 and immediately passes between the poles 12, 13 of a D.C. energized electromagnet to align the particles within the binder which is still soft. A soft-iron core 10 is arranged within the tube to concentrate the magnetic field and is supported on the central member of the die. The poles of the electromagnet are shaped to the outside of the tube, Figs. 1 and 3 (not shown). In a modification, Figs. 3 to 5 (not shown), the poles of the electromagnet are in the form of grooved wheels arranged so that they rotate as the tube is moved between them. A groove may be provided in the wall of the tube by means of a cutting wheel, Figs. 6 and 7 (not shown), to aid in orientating the resulting magnet when used in a small D.C. motor. In a further modification. Figs. 8 and 9 (not shown), a slit is cut in the wall of the tube so that the centre core may be supported by members extending through the slit. The orientation groove or slit may be formed by a triangular plate attached to the extruding die, Figs. 10 and 11 (not shown). The core supported within the tube may itself be a magnet and may comprise the polepieces of an electromagnet the coil of which is located outside the tube and coupled to the polepieces by flat magnetic limbs which pass through a slit cut in the tube. The magnetic particles may comprise Ba, Pb, Sr or Mn-Bi ferrite and may be combined with Fe. The binder may be a polymer elastomer or rubber such as PVC, methylmethacrylate, urea formaldehyde, vinylacetate, vinylformaldehyde, buna N, or polyethylene or a silicone or a non-magnetic metallic material.
GB54871/68A 1967-11-21 1968-11-19 Improvements in or relating to Magnets Expired GB1196228A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US68480067A 1967-11-21 1967-11-21

Publications (1)

Publication Number Publication Date
GB1196228A true GB1196228A (en) 1970-06-24

Family

ID=24749619

Family Applications (1)

Application Number Title Priority Date Filing Date
GB54871/68A Expired GB1196228A (en) 1967-11-21 1968-11-19 Improvements in or relating to Magnets

Country Status (4)

Country Link
US (1) US3640657A (en)
DE (1) DE1804447A1 (en)
FR (1) FR1592340A (en)
GB (1) GB1196228A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4562019A (en) * 1979-02-23 1985-12-31 Inoue-Japax Research Incorporated Method of preparing plastomeric magnetic objects
GB2266626A (en) * 1992-04-24 1993-11-03 Aisin Seiki A Magnetiser

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4365783A (en) * 1978-05-04 1982-12-28 Kesling Peter C Mold for making a tooth positioning and retaining appliance with air holes
DE3533968C2 (en) * 1985-09-24 1995-06-08 Weinsheim Chemie Device for magnetizing layers containing magnetizable material
JPH0624176B2 (en) * 1986-03-29 1994-03-30 信越化学工業株式会社 Method for producing polar anisotropic long molded products
US5061162A (en) * 1988-11-08 1991-10-29 Electrovert Ltd. Flux control for induction heating of melt-out cores
US4952346A (en) * 1988-11-08 1990-08-28 Electrovert Ltd Process for induction heating of melt-out cores
US9631251B2 (en) * 2012-11-29 2017-04-25 Amp Annealing Limited Cartridge case induction annealing apparatus
US11045851B2 (en) 2013-03-22 2021-06-29 Battelle Memorial Institute Method for Forming Hollow Profile Non-Circular Extrusions Using Shear Assisted Processing and Extrusion (ShAPE)
US10189063B2 (en) 2013-03-22 2019-01-29 Battelle Memorial Institute System and process for formation of extrusion products
US10695811B2 (en) 2013-03-22 2020-06-30 Battelle Memorial Institute Functionally graded coatings and claddings
US11383280B2 (en) 2013-03-22 2022-07-12 Battelle Memorial Institute Devices and methods for performing shear-assisted extrusion, extrusion feedstocks, extrusion processes, and methods for preparing metal sheets
US10109418B2 (en) 2013-05-03 2018-10-23 Battelle Memorial Institute System and process for friction consolidation fabrication of permanent magnets and other extrusion and non-extrusion structures
US11549532B1 (en) 2019-09-06 2023-01-10 Battelle Memorial Institute Assemblies, riveted assemblies, methods for affixing substrates, and methods for mixing materials to form a metallurgical bond
WO2023043839A1 (en) 2021-09-15 2023-03-23 Battelle Memorial Institute Shear-assisted extrusion assemblies and methods

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US859506A (en) * 1906-05-07 1907-07-09 John G Morton Machine for molding plastic materials.
US990918A (en) * 1910-11-01 1911-05-02 Frank A Stadler Advertising device.
US1993349A (en) * 1931-04-14 1935-03-05 Fiberlaid Corp Apparatus for forming sheet material
US2491589A (en) * 1943-01-27 1949-12-20 Extruded Plastics Inc Apparatus for making tubing
US2600254A (en) * 1947-03-20 1952-06-10 Lysobey John Wall treatment of tubing
US2583329A (en) * 1948-05-08 1952-01-22 Us Stoneware Co Method and apparatus for giving an internal gloss finish to a tube of heat plastic material
US2562135A (en) * 1949-07-25 1951-07-24 Baldwin Rubber Co Extruding apparatus
US2760229A (en) * 1952-09-20 1956-08-28 Lewis Eng Co Apparatus for applying plastic coating to wire
US3017339A (en) * 1957-01-24 1962-01-16 American Can Co Method of and apparatus for treating surfaces of extruded thermoplastic tubing with corona discharge
US3051988A (en) * 1957-02-09 1962-09-04 Baermann Max Material with permanent magnetic properties

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4562019A (en) * 1979-02-23 1985-12-31 Inoue-Japax Research Incorporated Method of preparing plastomeric magnetic objects
GB2266626A (en) * 1992-04-24 1993-11-03 Aisin Seiki A Magnetiser
GB2266626B (en) * 1992-04-24 1995-11-15 Aisin Seiki A magnetiser

Also Published As

Publication number Publication date
DE1804447A1 (en) 1969-06-04
FR1592340A (en) 1970-05-11
US3640657A (en) 1972-02-08

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee