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GB900461A - Electromagnetic device for maintaining the oscillatory movement of a timepiece balance wheel - Google Patents

Electromagnetic device for maintaining the oscillatory movement of a timepiece balance wheel

Info

Publication number
GB900461A
GB900461A GB1695459A GB1695459A GB900461A GB 900461 A GB900461 A GB 900461A GB 1695459 A GB1695459 A GB 1695459A GB 1695459 A GB1695459 A GB 1695459A GB 900461 A GB900461 A GB 900461A
Authority
GB
United Kingdom
Prior art keywords
maintaining
balance wheel
electromagnetic device
oscillatory movement
balance
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
GB1695459A
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.)
SSIH Management Services SA
Original Assignee
SSIH Management Services SA
Societe Suisse pour lIindustrie Horlogere Management Services SA
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 SSIH Management Services SA, Societe Suisse pour lIindustrie Horlogere Management Services SA filed Critical SSIH Management Services SA
Publication of GB900461A publication Critical patent/GB900461A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/04—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance
    • G04C3/06—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance
    • G04C3/065—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance the balance controlling gear-train by means of static switches, e.g. transistor circuits
    • G04C3/066—Constructional details, e.g. disposition of coils

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

900,461. Clocks and watches. SOC. SUISSE POUR L'INDUSTRIE HORLOGERE S.A. May 19, 1959 [May 24, 1958], No. 16954/59. Class 139. A balance assembly is maintained in oscillation by a maintaining circuit including a transistor T, a pick-up coil 11 and a driving coil 10 which co-operate with three magnetic members 7, 8 and 9 carried by the balance 1, At least one of the members 7, 8 or 9 is a permanent magnet polarized parallel to the axis of the balance wheel. The distance between the adjacent members 7 and 8, 8 and 9 is at least equal to the thickness of the coils 10 and 11.
GB1695459A 1958-05-24 1959-05-19 Electromagnetic device for maintaining the oscillatory movement of a timepiece balance wheel Expired GB900461A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH5989858 1958-05-24

Publications (1)

Publication Number Publication Date
GB900461A true GB900461A (en) 1962-07-04

Family

ID=4522630

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1695459A Expired GB900461A (en) 1958-05-24 1959-05-19 Electromagnetic device for maintaining the oscillatory movement of a timepiece balance wheel

Country Status (1)

Country Link
GB (1) GB900461A (en)

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