GB1432536A - Quartz crystal timepiece - Google Patents

Quartz crystal timepiece

Info

Publication number
GB1432536A
GB1432536A GB1729674A GB1729674A GB1432536A GB 1432536 A GB1432536 A GB 1432536A GB 1729674 A GB1729674 A GB 1729674A GB 1729674 A GB1729674 A GB 1729674A GB 1432536 A GB1432536 A GB 1432536A
Authority
GB
United Kingdom
Prior art keywords
rotor
stator
poles
april
quartz crystal
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
GB1729674A
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Publication of GB1432536A publication Critical patent/GB1432536A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C13/00—Driving mechanisms for clocks by master-clocks
    • G04C13/08—Slave-clocks actuated intermittently
    • G04C13/10—Slave-clocks actuated intermittently by electromechanical step advancing mechanisms
    • G04C13/11—Slave-clocks actuated intermittently by electromechanical step advancing mechanisms with rotating armature
    • 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
    • G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor

Abstract

1432536 Electronic watches DAINI SEIKOSHA KK 19 April 1974 [24 April 1973] 17296/74 Heading G3T In an electronic timepiece comprising a quartz crystal controlled oscillator circuit, Fig. 3, followed by a frequency divider circuit, the divider circuit produces a pulsiform driving signal in the range 8Hz to 64Hz, for instance at 32Hz, which is arranged to drive a stepping motor 19 whereby a seconds hands driven thereby, via a gear train, will appear to rotate continuously. The motor rotor 6, Fig. 2, may have either two or six permanent magnet poles, while its stator comprises a coil 5 and a pair of pole pieces 4. The position of one of the pole pieces is adjustable by an adjuster 14 whereby to vary the air gap between the rotor and stator, the direction of rotation being determined by relative positions of the line joining the rotor poles and the stator poles centre line AA.
GB1729674A 1973-04-24 1974-04-19 Quartz crystal timepiece Expired GB1432536A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4566673A JPS49133066A (en) 1973-04-24 1973-04-24

Publications (1)

Publication Number Publication Date
GB1432536A true GB1432536A (en) 1976-04-22

Family

ID=12725697

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1729674A Expired GB1432536A (en) 1973-04-24 1974-04-19 Quartz crystal timepiece

Country Status (9)

Country Link
JP (1) JPS49133066A (en)
BR (1) BR7403258D0 (en)
CH (2) CH591111A (en)
DD (1) DD111255A1 (en)
DE (1) DE2417852A1 (en)
ES (1) ES425641A1 (en)
FR (1) FR2227570B1 (en)
GB (1) GB1432536A (en)
IT (1) IT1004259B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2286066A (en) * 1994-02-01 1995-08-02 Wellgain Precision Products Li Watch

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6015891B2 (en) * 1974-04-04 1985-04-22 セイコーエプソン株式会社 Gear train structure of battery clock
JPS52154673A (en) * 1976-06-18 1977-12-22 Seiko Instr & Electronics Ltd Wheel train mechanism of analog crystal watch
JPS5388766A (en) * 1976-12-21 1978-08-04 Seiko Epson Corp Wheel train for electronic watch
JPS54115271A (en) * 1978-02-28 1979-09-07 Matsushita Electric Works Ltd Watch device
FR2481019A1 (en) * 1980-04-18 1981-10-23 Cetehor MOTOR STEP NOT ESPECIALLY FOR ELECTRONIC WATCH

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2286066A (en) * 1994-02-01 1995-08-02 Wellgain Precision Products Li Watch

Also Published As

Publication number Publication date
BR7403258D0 (en) 1974-11-19
FR2227570B1 (en) 1977-10-28
DD111255A1 (en) 1975-02-05
DE2417852A1 (en) 1974-11-07
JPS49133066A (en) 1974-12-20
ES425641A1 (en) 1976-06-16
FR2227570A1 (en) 1974-11-22
CH591111B5 (en)
CH591111A (en) 1977-09-15
CH561474A4 (en) 1977-02-15
IT1004259B (en) 1976-07-10

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Legal Events

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

Effective date: 19930419