GB1213962A - Turn-off permanent magnet - Google Patents

Turn-off permanent magnet

Info

Publication number
GB1213962A
GB1213962A GB1189469A GB1189469A GB1213962A GB 1213962 A GB1213962 A GB 1213962A GB 1189469 A GB1189469 A GB 1189469A GB 1189469 A GB1189469 A GB 1189469A GB 1213962 A GB1213962 A GB 1213962A
Authority
GB
United Kingdom
Prior art keywords
armature
magnets
field
permanent magnet
polepieces
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
GB1189469A
Inventor
Arlo Floyd Israelson
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.)
Eriez Manufacturing Co
Original Assignee
Eriez Manufacturing Co
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 Eriez Manufacturing Co filed Critical Eriez Manufacturing Co
Priority to GB1189469A priority Critical patent/GB1213962A/en
Publication of GB1213962A publication Critical patent/GB1213962A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/15—Devices for holding work using magnetic or electric force acting directly on the work
    • B23Q3/154—Stationary devices
    • B23Q3/1546—Stationary devices using permanent magnets

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

1,213,962. Magnets. ERIEZ MFG. CO. 6 March, 1969, No. 11894/69. Heading H1P. A permanent magnet device the external field of which may be " switched off " comprises a pair of polepieces 17, a ceramic stator magnet 19 and a ceramic armature magnet 10 supported on bearings in a casing 11. In the position shown the magnets aid one another and produce a field at pole faces 20 but by rotating the armature 10 through 180 degrees the magnets form a closed circuit and no external field is produced, Fig. 2 (not shown). The armature may be provided with curved polepieces 13, 14 and may be rotated to intermediate positions to provide a continuously variable external magnetic field. The device may be utilized in a magnetic sweeper, Fig. 3 (not shown), as a chuck, Fig. 4 (not shown), for lifting iron beams, Fig. 5 (not shown), or sheets, Fig. 7 (not shown), or for removing magnetic particles from material, Fig. 6 (not shown).
GB1189469A 1969-03-06 1969-03-06 Turn-off permanent magnet Expired GB1213962A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1189469A GB1213962A (en) 1969-03-06 1969-03-06 Turn-off permanent magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1189469A GB1213962A (en) 1969-03-06 1969-03-06 Turn-off permanent magnet

Publications (1)

Publication Number Publication Date
GB1213962A true GB1213962A (en) 1970-11-25

Family

ID=9994606

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1189469A Expired GB1213962A (en) 1969-03-06 1969-03-06 Turn-off permanent magnet

Country Status (1)

Country Link
GB (1) GB1213962A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2532615A1 (en) * 2011-06-08 2012-12-12 Starmag AG Lifting magnet with cylinder/piston actuator
EP2759508A1 (en) 2013-01-24 2014-07-30 Starmag AG Load-lifting magnet with rotary drive

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2532615A1 (en) * 2011-06-08 2012-12-12 Starmag AG Lifting magnet with cylinder/piston actuator
EP2759508A1 (en) 2013-01-24 2014-07-30 Starmag AG Load-lifting magnet with rotary drive

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee