US3654757A - Amplitude adjuster in an electronic timepiece - Google Patents

Amplitude adjuster in an electronic timepiece Download PDF

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Publication number
US3654757A
US3654757A US64716A US3654757DA US3654757A US 3654757 A US3654757 A US 3654757A US 64716 A US64716 A US 64716A US 3654757D A US3654757D A US 3654757DA US 3654757 A US3654757 A US 3654757A
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United States
Prior art keywords
resistor
elements
electronic timepiece
conducting
amplitude
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 - Lifetime
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US64716A
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English (en)
Inventor
Hirotoki Takamune
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.)
Citizen Watch Co Ltd
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Citizen Watch Co Ltd
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Filing date
Publication date
Priority claimed from JP7826169U external-priority patent/JPS4829491Y1/ja
Priority claimed from JP7855569U external-priority patent/JPS4829492Y1/ja
Priority claimed from JP8059969U external-priority patent/JPS4829493Y1/ja
Application filed by Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Application granted granted Critical
Publication of US3654757A publication Critical patent/US3654757A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • G04C3/067—Driving circuits with distinct detecting and driving coils
    • G04C3/068—Driving circuits with distinct detecting and driving coils provided with automatic control
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B18/00—Mechanisms for setting frequency
    • G04B18/04—Adjusting the beat of the pendulum, balance, or the like, e.g. putting into beat
    • 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
    • G04C3/067—Driving circuits with distinct detecting and driving coils
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
    • H05K1/167—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor incorporating printed resistors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0286—Programmable, customizable or modifiable circuits
    • H05K1/0293—Individual printed conductors which are adapted for modification, e.g. fusable or breakable conductors, printed switches
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10015—Non-printed capacitor
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/1003—Non-printed inductor
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10166—Transistor
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/17—Post-manufacturing processes
    • H05K2203/171—Tuning, e.g. by trimming of printed components or high frequency circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/17—Post-manufacturing processes
    • H05K2203/175—Configurations of connections suitable for easy deletion, e.g. modifiable circuits or temporary conductors for electroplating; Processes for deleting connections

Definitions

  • SHEET 3 [IF 4 AMPLITUDE ADJUSTER IN AN ELECTRONIC TIMEPIECE This invention relates generally to improvements in a battery-driven electronic watch, and more specifically it relates to improvements in and relating to the adjuster mechanism for proper setting of the amplitude of the mechanical vibrator commonly employed in this kind of electronic watch and formed mostly and rcpresentatively into a balance wheel, tuning fork, tuning lead or the like oscillatory member.
  • the mechanical vibrator is controlled in its electromagnetically driven oscillatory motion by means of at least a semiconductor switching circuit element.
  • Unavoidable variation will be encountered in the characteristic data or constants of these switching elements and other related circuit parts when manufactured on an industrial scale, which invites naturally a corresponding deviation of the oscillation amplitude of the mechanical vibrator from its design value, even though a sincere attention is given to the selection of the precisely manufactured circuit elements.
  • This kind of operational fluctuation of the mechanical vibrator is invited further by the unavoidable inferior workmanship of the magnets, coils and the like which constitute in combination the electromechanical motion converter mechanism, as well as by the loading variation in general of the conventional watch gear train acting, as the load to the converter.
  • a conventional measure is to employ a variable resistor inserted in the electronic circuit. But, it has been experienced with a substantial limitation in miniaturizing such type of resistors so as to adapt them for use in smaller size timepieces, especially smaller electronic watches.
  • variable resistors with inferior electrical contact which result in a faulty operation of the electronic timepiece.
  • variable resistors A further drawback inherent in the employment of these variable resistors resides in the insufficient resistance to outside shocks to which the timepiece would frequently be subjected in practical use thereof by its wearer. The unsatisfactory shockproofness will require frequent readjustment of the once set resistance value for recovery thereof.
  • Another conventional technique for performing occasionally required adjustment of the amplitude of a mechanical vibrator of an electronic timepiece is to reduce the amplitude from a certain high value to an optimal one by modifying an adjustable resistance circuit comprising a plurality of resistance elements and connected in series with the drive coil of the motion converter, for increasing its overall resistance value to a selected higher value.
  • the main object of the present invention is to provide an improved electronic circuit assembly capable of substantially the aforementioned conventional various drawbacks.
  • a further object of the invention is to provide an electronic circuit assembly for increasing or decreasing the overall resistance of the adjustable resistance circuit, or to increase or decrease the practical amplitude of the mechanical vibrator as desired to a certain limited range.
  • FIG. 1 is a plan view of a battery-driven movement of an electronic timepiece, embodying the principles of the inven tion.
  • FIG. 2 is a schematic convection diagram of an electronic circuit employed in the circuit assembly according to the invention.
  • FIG. 3 is an enlarged plan view of a part of the timepiece movement shown in FIG. 1, showing a main unit comprising several main working circuit elements of the circuit assembly according to the invention.
  • FIG. 4 is a back surface view of the unit shown in FIG. 3.
  • FIG. 5 is a side view of the unit shown in FIGS. 3 and 4.
  • FIG. 6 is an enlarged plan view of a modification of the amplitude adjusting resistor from that contained in the circuit shown in FIG. 2.
  • FIG. 7 is a modified circuit from that shown in FIG. 2, wherein the amplitude adjusting resistor has been somewhat modified and two transistors in place of the sole one shown in the foregoing has been connected into a multivibrator.
  • FIG. 8 is a still further modified circuit arrangement from that shown in FIG. 7, wherein, however, two sets of amplitude adjusting resistors have been embodied.
  • FIG. 9 is a plan view of the front surface of a specifically constructed circuit unit representing the wiring connections shown in FIG. 8.
  • FIG. 10 is a plan view of the rear surface of the circuit unit shown in FIG. 9.
  • FIG. 11 is a side view of the circuit unit shown in FIG. 9 and 10.
  • FIG. 12 is a plan view of part of an electronic watch, embodying a circuit assembly as a second embodiment of the invention.
  • FIG. 13 is an example of an imaginary amplitude adjuster circuit stading outside of the framework of the invention.
  • FIG. 14 is a still further modified circuit from that shown in FIG. 2.
  • FIG. 15 is a circuit of which a dotted line block includes the circuit elements shown in FIG. 12.
  • FIG. 16 is a rear side view of the circuit unit shown in FIGS. 12 and 15.
  • FIGS. 1-5 a first embodiment of the present invention will be described in detail.
  • the numeral 11 represents a disc-type battery which is mounted in a corresponding recess 12 formed on the conventional plate 13 of the watch, said battery being held in position by means of a retainer strip 14 which is attached firmly, yet detachably to the plate 13 by means of fixing screws 15 and
  • the numeral 17 represents a printed plastic, ceramic or the like insulator board which is firmly mounted in a correspondingly shaped recess 18 formed on the plate 13 by means of fixing screws 19 and 20 passing through the corresponding reception holes 27 and 28 formed through the plastic board 17.
  • a transistor 21 is fixedly attached by means of its conducting leads 23, 24 and 38.
  • a condenser 22 is fixedly attached to the board 17 by means of its leads 25 and 26.
  • the numeral 29 is a coil carrier made into an insulator plate such as plastic, ceramic or the like which carries combined coil assembly comprising a sensing coil element 30 and a drive coil element 31 of the conventional design shown schematically in FIG. 2, although not specifically shown in FIG. 1, these coils being so designed and arranged to electromagnetically cooperate with a sensing and a drive permanent magnet shown at and 136, respectively, and carried rigidly by a balance wheel 32.
  • the watch is provided naturally with a conventional gear train, although not shown, several gears of which are rotatably supported respective bearings 129-132 rigidly mounted in a mounting plate 33, the latter being fixedly attached to the plate 13 by means of a plurality of set screws 134.
  • Coil carrier 29 is rigidly attached to the plate 13 by means of a set screw shown at 35.
  • the gear train is adapted to be driven from the balance wheel 32, as is commonly known in the conventional balance wheel type electronic watch.
  • sensing coil 30 is electrically connected at its one side through lead 36, junction 34, lead 26, condenser 22, lead 25, junction 37 and lead 38 to the base electrode of the transistor 21.
  • the opposite side of the sensing coil 30 is electrically connected through lead 39, junction 40, lead 41, junction 42 and lead 43 to the positive side of the battery 11.
  • the negative side of the latter is electrically connected through lead 44, junction 45 and lead 24 to the emitter electrode of transistor 21, while the collector electrode of the latter is connected through lead 23, junction 48 and lead 49 to an amplitude adjusting resistor generally shown only schematically in FIG. 2 at 50.
  • resistor 50 The opposite side of the resistor 50 is connected through lead 51, junction 52 and lead 53 to one side of the drive coil 31, the opposite side of which is connected through a lead 54 to a junction 42.
  • Bias resistor 55 is connected at its both side through respective leads 56 and 57 to junctions 37 and 40, respectively.
  • the junction 40 shown in FIG. 2 is constituted by said set screw 20 in practice in the case of the present embodiment.
  • the leads 39 and 54 shown in FIG. 2 is constituted in common by the set screw 35 in the present embodiment.
  • the lead 43 is constituted by the retainer strip 14 and the junction 42 is constituted by the screws and 16.
  • Lead 41 is constituted a part of the plate 13.
  • Resistors 50 and 55 have been formed on the insulator board 17 by printing or evaporatively depositing a kind of conventional resistance paste comprising, as an example, palladium, silver and metal oxide, and baking at 700800 C.
  • Leads or conducting parts such as at 49, 56 and 57 and conducting parts contained in the amplitude adjusting resistor 50 to be described have been formed as shown by the conventional circuit printing process on the insulator board 17 with a known conducting paste containing silver, gold, platinum or the like and then again baked at a temperature between 700 and 800 C.
  • the baking temperature can be modified depending upon the nature and kind of the material of the insulator boards.
  • one or more lateral cuts are mechanically formed, yet in a non-interrupting way.
  • the amplitude adjusting resistor 50 comprises a conducting part generally shown at 60 and an elongated resisting part generally shown at 61.
  • the former part 60 comprises a series of axial conducting elements a which may be continuous as seen at the right-hand half thereof when seen in FIG. 3 or may be interrupted at c as seen at the left-hand half thereof.
  • each of said axial conductive elements a is united with a lateral conductive element b which has an ample length so as to cross the resistor strip 61.
  • the resistor elements 11,, d and d are excluded, in this case, from the circuit by virtue of the electrical connection of the related conductor elements a" connected in the longitudinal direction one after another and as shown, thereby providing a branch-off resistor comprising said resistor elements d -d
  • the remaining resistance elements u and u are included in the circuit by virtue of two interrupted points c between the related longitudinal conductive elements a.
  • the number of the resistor elements d,--a and u,u are only illustrative and may be increased or decreased as desired at the production stage.
  • the overall resistance of the resistor 50 may be correspondingly increased for decreasing the oscillatory amplitude of the balance wheel 32.
  • the number of the interruptions c may be correspondingly reduced by fusing the gap or gaps as desired by applying thereat the conducting paste.
  • a resistance value 500 ohms may correspond to a variation of amplitude angle 20 in a practical electronic watch.
  • the amplitude angle of the balance wheel may be reduced 20 by providing an open gap at the conductive element a" corresponding to (1,. When opened at the initial two successive conductive elements a corresponding to d, and d the amplitude will be reduced by 40, and so on.
  • the amplitude will be increased by 20 by closing conductingly one of the open gaps c. A closure of two gaps c, the amplitude will be increased by 40 and so
  • opened resistor elements u -u having interrupted longitudinal respectively, are connected in series with a series of closed resistor elements d -d by means of the two continuous conducting leads 62 and 63.
  • Central lead 63 extends to the junction 48, while the outer lead 62 extends to the junction 52.
  • the interrupted series of resistor elements u,-u is excluded in effect from the circuit, while the parallel connected series of resistor elements ti -d are included in effect in the circuit.
  • the areas of these resistor elements represent respective and thus different resistance values.
  • the oscillation amplitude will be correspondingly decreased by interrupting in the aforementioned way the resistor elements a -d
  • the number of the resistor elements can be increased or decreased so as to meet with occasional demands, as the case may be.
  • the closure or opening a resistor element will affect substantially more effectively upon the modifying effect to the oscillation amplitude of the mechanical vibrator represented representatively by the balance wheel 32.
  • two transistors 21a and 21b, two bias resistors 55a and 55b, and two condensers 22a and 22b are employed, in place of the corresponding singular elements 21, 22 and 55.
  • Battery is shown at 11a.
  • These circuit elements are arranged to provide a multivibrator as known per se.
  • coils 30a and 31a are arranged and mounted as shown in FIG. 1 at 30;3 l, but these coils act in the present embodiment as sensing means and drive means in an alternating way by virtue of the multivibrator connection as above mentioned.
  • condensers 22a;22b and resistors 55a;55b act as time constant elements as will be easily supposed by any person skilled in the art.
  • a block shown in chain-dotted line represents an amplitude adjusting resistor which corresponds to that shown at 50in FIG. 2 and at 70 in FIG. 6.
  • This resistor unit 100 comprises a series of resistor elements r r r and r, which are connected laterally with longitudinal conductor elements a,, a a and a, by lateral conductor elements b b b and b., respectively.
  • the overall resistance of the unit 100 will be substantially nil by virtue of all the longitudinal conductive elements a -a, conductive in combination.
  • the resistor elements r,-r are included in effect in the circuit and relative to the coil 30a when the latter acts as drive means and in a successive manner.
  • these resistor elements are also included in effect in the circuit relative to the same coil 30a when the latter operates as sensing means.
  • the oscillation amplitude will become decreased correspondingly with increase of the resistance value at 100, and vice versa.
  • resistors 55a and 55b corresponding to those denoted 55a and 55b in FIG. 7 are connected in parallel to condensers 22a and 22b, respectively, for simplifying the respective connections.
  • the function is substantially same, however, as before.
  • Transistors 21a and 21b are connected to the plate 13 through manual switch 71 and battery 11b.
  • the relative operation between the adjusting resistor 100a and the coil 31a is perfectly same as before.
  • the remaining coil 30a is also influenced by the newly provided resistor 10% in the similar manner. Therefore, the amplitude adjusting function is doubled in this case in comparison with that obtainable with the foregoing arrangement shown in FIG. 7.
  • resistor elements were set in the following way:
  • switch 71 serves for interruption of the circuit in case of non-use of the watch, thereby preventing an excess and meaningless power consumption.
  • the amplitudeadjusting circuit comprises a sensing coil 30a" and a drive coil 31a", a condenser 220, a resistor 550, an adjusting resistor unit 1000, a switch 710 and a transistor 21c are provided and arranged as shown.
  • the structure and function can be substantially understood by reference of the corresponding foregoing reference numerals 21, 30, 31, 22, 55, 71 and and their related foregoing disclosure.
  • junctions 34c, 45c, 52c and 72 in FIG. 15 are shown also in FIG. 16. These functions 34c, 45c and 520 are similar to those shown at 34, 4,5 and 52 in the foregoing, while a new junction 72 is shown only in FIGS. 15 and 16. Battery and switch 71a will serve as before as was illustrated in the foregoing at 11 and 71, respectively.
  • FIG. 13 An imaginary circuit arrangement standing outside of the framework of the invention is shown in FIG. 13.
  • the constituents 11c, 21c, 22c, 30a and 550 are same in their structure and function, as was referred to FIG. 15.
  • the amplitude adjusting resistor unit is shown at 100d. From this figure, it will be seen even by adapting any possible way for interrupting the related conductive elements, the overall resistance of the unit will become modified only in the resistance increasing direction.
  • FIG. 14 The arrangement shown in FIG. 14 is substantially similar to that shown in FIG. 5.
  • the resistor 55c and the battery 11c are differently'connected from the arrangement in FIG. 15, but the function is substantially similar.
  • the interrupting direction A will provide the same results as those in the case of A.
  • the reversed operation in the direction B will produce similar results as was referred to in the case of B.
  • an electronic timepiece of the type comprising a mechanical vibrator, permanent magnet means carried thereby, a transistor drive circuit having a transistor means, a sensing coil and a driving coil with said coils being electromagnetically coupled with said permanent magnet means
  • the improvements comprising an amplitude adjusting resistor unit inserted in said circuit and comprising an insulator base, at least a series of film resistor elements and a series of conducting film elements arranged parallel thereto and deposited on said base, each of said resistor elements being electrically connected by a laterally arranged and equally deposited conducting film connector with a corresponding one of said series of conducting film elements, said conducting connectors being so arranged that by interrupting them selectively the amplitude of said vibrator may be modified in a stepped manner in the desired direction of amplitude increase or decrease.
  • said series of conducting elements are originally provided with a plurality of interruptions between said conducting elements, whereby when a selected number of these interruptions are closed by the application of a conducting paste the overall resistance of said resistor unit is reduced to increase the practiselam lwls siths e s rt lyibetea 3.
  • said series of conducting elements are originally provided with a plurality of conducting joints between said conducting elements, whereby when a selected number of these joints are opened mechanically, the overall resistance of said resistor unit is increased to decrease the practical amplitude of the mechanical vibrator.
  • the drive circuit comprises two transistors which are connected into a multivibrator with each other such that the two coils which are provided in the circuit each act as the sensor and the driver in an alternating way.
  • said resistor unit is connected at one end to the collector electrode of one of the transistors and the opposite end of said resistor unit is connected to the base electrode of the remaining resistor as well as one of said coils.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electric Clocks (AREA)
US64716A 1969-08-18 1970-08-18 Amplitude adjuster in an electronic timepiece Expired - Lifetime US3654757A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP7826169U JPS4829491Y1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1969-08-18 1969-08-18
JP7855569U JPS4829492Y1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1969-08-20 1969-08-20
JP8059969U JPS4829493Y1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1969-08-25 1969-08-25

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US3654757A true US3654757A (en) 1972-04-11

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US64716A Expired - Lifetime US3654757A (en) 1969-08-18 1970-08-18 Amplitude adjuster in an electronic timepiece

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US (1) US3654757A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH (1) CH1232970A4 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2042102A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2058363B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1326054A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778999A (en) * 1972-12-13 1973-12-18 Girard Perregaux Sa Electronic wristwatch
US3787783A (en) * 1971-04-21 1974-01-22 E Ketterer Time-keeping device with transistor control using oscillating magnet
US4079436A (en) * 1976-06-28 1978-03-14 Facet Enterprises, Inc. 5,000 Hour blocking oscillator for an electromagnetic fuel pump
WO2014090830A3 (fr) * 2012-12-11 2014-10-02 Richemont International Limited Organe régulateur pour montre-bracelet

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2707234A (en) * 1952-08-22 1955-04-26 American Time Products Inc Tuning fork oscillators
US3351833A (en) * 1962-06-29 1967-11-07 Diehl Compensated transistorized electric clock circuit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3441804A (en) * 1966-05-02 1969-04-29 Hughes Aircraft Co Thin-film resistors
CH1066066A4 (de) * 1966-07-22 1968-04-30 Biviator Sa Elektrische Uhr
FR1517282A (fr) * 1967-03-30 1968-03-15 Citizen Watch Co Ltd Perfectionnements aux dispositifs moteurs pour mouvements d'horlogerie électriques

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2707234A (en) * 1952-08-22 1955-04-26 American Time Products Inc Tuning fork oscillators
US3351833A (en) * 1962-06-29 1967-11-07 Diehl Compensated transistorized electric clock circuit

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3787783A (en) * 1971-04-21 1974-01-22 E Ketterer Time-keeping device with transistor control using oscillating magnet
US3778999A (en) * 1972-12-13 1973-12-18 Girard Perregaux Sa Electronic wristwatch
US4079436A (en) * 1976-06-28 1978-03-14 Facet Enterprises, Inc. 5,000 Hour blocking oscillator for an electromagnetic fuel pump
WO2014090830A3 (fr) * 2012-12-11 2014-10-02 Richemont International Limited Organe régulateur pour montre-bracelet
CN105143997A (zh) * 2012-12-11 2015-12-09 里奇蒙特国际股份有限公司 用于腕表的调节本体
US9746831B2 (en) 2012-12-11 2017-08-29 Richemont International Sa Regulating body for a wristwatch
CN105143997B (zh) * 2012-12-11 2018-09-04 里奇蒙特国际股份有限公司 用于腕表的调节本体

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Publication number Publication date
FR2058363A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1971-05-28
GB1326054A (en) 1973-08-08
FR2058363B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1973-10-19
DE2042102A1 (de) 1971-03-04
CH1232970A4 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1973-04-13

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