GB1019493A - Ring magnet - Google Patents

Ring magnet

Info

Publication number
GB1019493A
GB1019493A GB838464A GB838464A GB1019493A GB 1019493 A GB1019493 A GB 1019493A GB 838464 A GB838464 A GB 838464A GB 838464 A GB838464 A GB 838464A GB 1019493 A GB1019493 A GB 1019493A
Authority
GB
United Kingdom
Prior art keywords
regions
manganese
oriented
square
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
GB838464A
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.)
ALEXANDER WALDEMAR COCHARDT
Original Assignee
ALEXANDER WALDEMAR COCHARDT
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 ALEXANDER WALDEMAR COCHARDT filed Critical ALEXANDER WALDEMAR COCHARDT
Priority to GB838464A priority Critical patent/GB1019493A/en
Publication of GB1019493A publication Critical patent/GB1019493A/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
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0205—Magnetic circuits with PM in general
    • H01F7/021—Construction of PM

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

1,019,493. Electric motor magnets. A. W. COCHARDT. Feb. 28, 1964, No. 8384/64. Heading H2A. [Also in Division H1] A unitary anisotropic permanent magnet substantially ring-shaped body 30 comprises a plurality, e.g. two symmetricallyarranged regions N, S each preferentially oriented both substantially radially throughout the entire angular extent of the region and perpendicularly with respect to the ring axis over the entire distance between the inner and outer surfaces of the body, the oriented regions being mutually separated by non-radially oriented regions A, B and permanently magnetized in the orientation direction 35. The magnet may be assembled in a motor and be of a ceramic; a sintered ferrite, e.g. barium, strontium and lead; intermetallic compounds such as manganese-aluminium and manganese-bismuth; or alnico. The body alternatively may be elliptical or polygonal, of square, rectangular, round or oval cross-section, or have a circular periphery and a square bore.
GB838464A 1964-02-28 1964-02-28 Ring magnet Expired GB1019493A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB838464A GB1019493A (en) 1964-02-28 1964-02-28 Ring magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB838464A GB1019493A (en) 1964-02-28 1964-02-28 Ring magnet

Publications (1)

Publication Number Publication Date
GB1019493A true GB1019493A (en) 1966-02-09

Family

ID=9851516

Family Applications (1)

Application Number Title Priority Date Filing Date
GB838464A Expired GB1019493A (en) 1964-02-28 1964-02-28 Ring magnet

Country Status (1)

Country Link
GB (1) GB1019493A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0016960A1 (en) * 1979-02-28 1980-10-15 TDK Corporation Anisotropic polymeric magnet in the tubular form and process for producing the same
FR2476377A1 (en) * 1980-02-15 1981-08-21 Statni Vyzkumny Ustav Material PROCESS FOR PRODUCING PERMANENT ANISOTROPIC MAGNETS
EP0265016A2 (en) * 1986-10-20 1988-04-27 Philips Electronics Uk Limited Process of making a permanent magnet
GB2236435A (en) * 1989-08-29 1991-04-03 Mabuchi Motor Co Pole creating sections for a permanent field magnet
WO1993022778A1 (en) * 1992-04-28 1993-11-11 Sumitomo Special Metals Company Limited Cylinder type anisotropic magnets and their manufacturing methods and motors
EP1308970A2 (en) * 2001-10-31 2003-05-07 Shin-Etsu Chemical Co., Ltd. Radial anisotropic sintered magnet and its production method, magnet rotor using sintered magnet, and motor using magnet rotor
EP1675140A2 (en) * 2004-12-21 2006-06-28 TDK Corporation Cylindrical sintered magnet, motor and method for producing cylindrical sintered magnet

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0016960A1 (en) * 1979-02-28 1980-10-15 TDK Corporation Anisotropic polymeric magnet in the tubular form and process for producing the same
FR2476377A1 (en) * 1980-02-15 1981-08-21 Statni Vyzkumny Ustav Material PROCESS FOR PRODUCING PERMANENT ANISOTROPIC MAGNETS
EP0265016A2 (en) * 1986-10-20 1988-04-27 Philips Electronics Uk Limited Process of making a permanent magnet
GB2196479A (en) * 1986-10-20 1988-04-27 Philips Electronic Associated Method and apparatus for the manufacture of rare earth transition metal alloy magnets
GB2196479B (en) * 1986-10-20 1990-03-28 Philips Electronic Associated Method and apparatus for the manufacture of rare earth transition metal alloy magnets
EP0265016A3 (en) * 1986-10-20 1990-05-02 Philips Electronics Uk Limited Process of making a permanent magnet
GB2236435B (en) * 1989-08-29 1993-11-17 Mabuchi Motor Co Field magnet for miniature motors
GB2236435A (en) * 1989-08-29 1991-04-03 Mabuchi Motor Co Pole creating sections for a permanent field magnet
WO1993022778A1 (en) * 1992-04-28 1993-11-11 Sumitomo Special Metals Company Limited Cylinder type anisotropic magnets and their manufacturing methods and motors
EP1308970A2 (en) * 2001-10-31 2003-05-07 Shin-Etsu Chemical Co., Ltd. Radial anisotropic sintered magnet and its production method, magnet rotor using sintered magnet, and motor using magnet rotor
EP1308970A3 (en) * 2001-10-31 2004-12-29 Shin-Etsu Chemical Co., Ltd. Radial anisotropic sintered magnet and its production method, magnet rotor using sintered magnet, and motor using magnet rotor
US6984270B2 (en) 2001-10-31 2006-01-10 Shin-Etsu Chemical Co., Ltd. Radial anisotropic sintered magnet and its production method, magnet rotor using sintered magnet, and motor using magnet rotor
EP2063439A1 (en) * 2001-10-31 2009-05-27 Shin-Etsu Chemical Co., Ltd. Radial anisotropic sintered magnet, its production method, and magnet rotor or motor using said sintered magnet
EP2063438A1 (en) * 2001-10-31 2009-05-27 Shin-Etsu Chemical Co., Ltd. Production method of a radial anisotropic sintered magnet, and magnet rotor or motor using said sintered magnet
US7618496B2 (en) 2001-10-31 2009-11-17 Shin-Etsu Chemical Co., Ltd. Radial anisotropic sintered magnet and its production method, magnet rotor using sintered magnet, and motor using magnet rotor
US7948135B2 (en) 2001-10-31 2011-05-24 Shin-Etsu Chemical Co., Ltd. Radial anisotropic sintered magnet and its production method, magnet rotor using sintered magnet, and motor using magnet rotor
EP1675140A2 (en) * 2004-12-21 2006-06-28 TDK Corporation Cylindrical sintered magnet, motor and method for producing cylindrical sintered magnet
EP1675140A3 (en) * 2004-12-21 2010-11-10 TDK Corporation Cylindrical sintered magnet, motor and method for producing cylindrical sintered magnet

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