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FR1056811A - Improvements made or relating to magnetic devices - Google Patents

Improvements made or relating to magnetic devices

Info

Publication number
FR1056811A
FR1056811A FR1056811DA FR1056811A FR 1056811 A FR1056811 A FR 1056811A FR 1056811D A FR1056811D A FR 1056811DA FR 1056811 A FR1056811 A FR 1056811A
Authority
FR
France
Prior art keywords
relating
improvements made
magnetic devices
magnetic
devices
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
Other languages
French (fr)
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.)
KINGSTON INSTR Co Ltd
Original Assignee
KINGSTON INSTR Co Ltd
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 KINGSTON INSTR Co Ltd filed Critical KINGSTON INSTR Co Ltd
Application granted granted Critical
Publication of FR1056811A publication Critical patent/FR1056811A/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]
    • H01F7/0231—Magnetic circuits with PM for power or force generation
    • H01F7/0252—PM holding devices
    • H01F7/0257—Lifting, pick-up magnetic objects
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B31/00—Fishing for or freeing objects in boreholes or wells
    • E21B31/06—Fishing for or freeing objects in boreholes or wells using magnetic means

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
FR1056811D 1950-09-28 1951-09-27 Improvements made or relating to magnetic devices Expired FR1056811A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1056811X 1950-09-28

Publications (1)

Publication Number Publication Date
FR1056811A true FR1056811A (en) 1954-03-03

Family

ID=10871020

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1056811D Expired FR1056811A (en) 1950-09-28 1951-09-27 Improvements made or relating to magnetic devices

Country Status (1)

Country Link
FR (1) FR1056811A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2833353A (en) * 1954-06-01 1958-05-06 Ideco Inc Retrieving tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2833353A (en) * 1954-06-01 1958-05-06 Ideco Inc Retrieving tool

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