GB422878A - - Google Patents

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Publication number
GB422878A
GB422878A GB422878DA GB422878A GB 422878 A GB422878 A GB 422878A GB 422878D A GB422878D A GB 422878DA GB 422878 A GB422878 A GB 422878A
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United Kingdom
Prior art keywords
coil
magnet
april
soft
iron
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.)
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Publication of GB422878A publication Critical patent/GB422878A/en
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  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

422,878. Current and pressure meters. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. April 23, 1934, Nos. 12186 and'12187. Convention dates, April 22, 1933 and Dec. 7, 1933. [Class 37] Moving - coil instruments wherein the permanent magnet is located within the coil and a soft - iron yoke is positioned outside the coil have the magnet constructed so that its interior lines of force are substantially equal in length. In Fig. 1, the pole faces 1 are cylindrical and material is cut away intermediate thereof. In Fig. 3, the magnet is in the form of a parallelopiped and is provided with soft-iron polepieces 5.
GB422878D Active GB422878A (en)

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ID=1746089

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2607812A (en) * 1948-12-06 1952-08-19 Weston Electrical Instr Corp Electrical instrument with permanent magnet core
US2650349A (en) * 1953-08-25 Electrical instrument with perma
US2808567A (en) * 1957-10-01 lederer
US4052669A (en) * 1975-09-08 1977-10-04 Kizo Adachi Linear scale electric meter with cylindrical internal magnet and two arc-shaped auxiliary yokes

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2650349A (en) * 1953-08-25 Electrical instrument with perma
US2808567A (en) * 1957-10-01 lederer
US2607812A (en) * 1948-12-06 1952-08-19 Weston Electrical Instr Corp Electrical instrument with permanent magnet core
US4052669A (en) * 1975-09-08 1977-10-04 Kizo Adachi Linear scale electric meter with cylindrical internal magnet and two arc-shaped auxiliary yokes

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