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FR2397748A1 - Miniature DC clock motor - accommodates varying characteristics of battery using voltage dependent components - Google Patents

Miniature DC clock motor - accommodates varying characteristics of battery using voltage dependent components

Info

Publication number
FR2397748A1
FR2397748A1 FR7721475A FR7721475A FR2397748A1 FR 2397748 A1 FR2397748 A1 FR 2397748A1 FR 7721475 A FR7721475 A FR 7721475A FR 7721475 A FR7721475 A FR 7721475A FR 2397748 A1 FR2397748 A1 FR 2397748A1
Authority
FR
France
Prior art keywords
motor
battery
miniature
voltage dependent
varying characteristics
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.)
Granted
Application number
FR7721475A
Other languages
French (fr)
Other versions
FR2397748B1 (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7721475A priority Critical patent/FR2397748A1/en
Publication of FR2397748A1 publication Critical patent/FR2397748A1/en
Application granted granted Critical
Publication of FR2397748B1 publication Critical patent/FR2397748B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C13/00—Driving mechanisms for clocks by primary clocks
    • G04C13/08—Secondary clocks actuated intermittently
    • G04C13/10—Secondary clocks actuated intermittently by electromechanical step advancing mechanisms
    • G04C13/11—Secondary clocks actuated intermittently by electromechanical step advancing mechanisms with rotating armature
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C10/00—Arrangements of electric power supplies in time pieces
    • G04C10/04—Arrangements of electric power supplies in time pieces with means for indicating the condition of the power supply

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

Aminiature d.c. motor is for use as a sepping motor or in clock and watch movements. The motor action accommodates changes of battery characteristics due to ageing. The motor has two stator windings set around a multipolar rotor. The permanent magnet rotor material has high coercive and remnance characteristics and has twelve circumferential slots defining alternate north and south poles. Eight stator windings (55-62) are connected in two groups the phase difference between them being controlled by a voltage variable capacitor (C) and a resistor (R). A fast running re-set mode is achieved by a switch altering the winding connection sense.
FR7721475A 1977-07-12 1977-07-12 Miniature DC clock motor - accommodates varying characteristics of battery using voltage dependent components Granted FR2397748A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7721475A FR2397748A1 (en) 1977-07-12 1977-07-12 Miniature DC clock motor - accommodates varying characteristics of battery using voltage dependent components

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7721475A FR2397748A1 (en) 1977-07-12 1977-07-12 Miniature DC clock motor - accommodates varying characteristics of battery using voltage dependent components

Publications (2)

Publication Number Publication Date
FR2397748A1 true FR2397748A1 (en) 1979-02-09
FR2397748B1 FR2397748B1 (en) 1981-08-14

Family

ID=9193297

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7721475A Granted FR2397748A1 (en) 1977-07-12 1977-07-12 Miniature DC clock motor - accommodates varying characteristics of battery using voltage dependent components

Country Status (1)

Country Link
FR (1) FR2397748A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2497022A1 (en) * 1980-12-24 1982-06-25 Portescap MOTOR NOT WITHOUT DIPHASE
EP0822470A1 (en) * 1996-08-01 1998-02-04 Asulab S.A. Electronic timepiece comprising a generator driven by a barrel spring

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1538242A (en) * 1966-10-14 1968-08-30 Movado Montres Device for signaling the imminent exhaustion of a clockwork battery

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1538242A (en) * 1966-10-14 1968-08-30 Movado Montres Device for signaling the imminent exhaustion of a clockwork battery

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2497022A1 (en) * 1980-12-24 1982-06-25 Portescap MOTOR NOT WITHOUT DIPHASE
WO1982002291A1 (en) * 1980-12-24 1982-07-08 Oudet Claude Diphased stepping motor
EP0822470A1 (en) * 1996-08-01 1998-02-04 Asulab S.A. Electronic timepiece comprising a generator driven by a barrel spring
FR2752070A1 (en) * 1996-08-01 1998-02-06 Asulab Sa ELECTRONIC WATCH PIECE COMPRISING A GENERATOR DRIVEN BY A SPRING BARREL
US5751666A (en) * 1996-08-01 1998-05-12 Asulab S.A. Electronic timepiece comprising a generator driven by a spring barrel

Also Published As

Publication number Publication date
FR2397748B1 (en) 1981-08-14

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse