EP0259649B1 - Pièce d'horlogerie permettant de distinguer les heures d'une moitié d'un jour des heures de l'autre moitié de ce jour - Google Patents

Pièce d'horlogerie permettant de distinguer les heures d'une moitié d'un jour des heures de l'autre moitié de ce jour Download PDF

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Publication number
EP0259649B1
EP0259649B1 EP87111858A EP87111858A EP0259649B1 EP 0259649 B1 EP0259649 B1 EP 0259649B1 EP 87111858 A EP87111858 A EP 87111858A EP 87111858 A EP87111858 A EP 87111858A EP 0259649 B1 EP0259649 B1 EP 0259649B1
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EP
European Patent Office
Prior art keywords
sign
day
signs
angle
rotatable element
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Expired - Lifetime
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EP87111858A
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German (de)
English (en)
French (fr)
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EP0259649A1 (fr
Inventor
Pierre-André Noirjean
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ETA SA Manufacture Horlogere Suisse
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Eta SA Fabriques dEbauches
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    • 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
    • G04B19/00—Indicating the time by visual means
    • G04B19/06—Dials
    • G04B19/16—Shiftable dials, e.g. indicating alternately from 1 to 12 and from 13 to 24
    • G04B19/163—Shiftable dials, e.g. indicating alternately from 1 to 12 and from 13 to 24 numbers which are visible alternately from 1 to 12 and from 13 to 24 on the same dial G04B19/085

Definitions

  • the present invention relates to a timepiece of the kind comprising a timepiece movement, a dial, display means driven in rotation about an axis by said movement at the rate of one revolution in twelve hours and cooperating with said dial to indicate during a first round the hours of the first half of a day and during a second round consecutive to said first round the hours of the second half of the day, and means making it possible to distinguish said hours from a first half of a day of said hours of the second half of the day comprising a first transparent zone formed in said dial at a first angular position corresponding to the angular position occupied by said display means at a first hour determined during said first half of one day and at a second determined hour separated from said first hour determined by an interval of twelve hours, a movable element rotating around said axis and arranged under said dial, a first group of signs arranged on said movable element facing said dial at the same distance from said axis as said first transparent area and comprising a first sign representing the number of said first determined hour and a second
  • a device making it possible to know whether the time displayed by a timepiece is in the first or in the second half of a day is useful, for example, when this timepiece includes a calendar or an alarm clock whose The trigger time can be adjusted to any of the twenty-four hours of a day.
  • This device makes it possible to reset such a timepiece to the time, after it has stopped, without risking seeing its calendar indications change at noon instead of midnight, or hear its alarm go off twelve hours too early or too late.
  • a timepiece comprising such a device is described in patent DE-C 873 520. But this timepiece is of a different kind from that which has been defined above, because it is its dial which is mobile, the hour numbers 1 to 12 and 13 to 24 being carried by a fixed disc located under the dial and visible through openings in the latter. The mechanism of the timepiece drives the dial in successive 18 ° steps every twelve hours, the hour numbers on the fixed disc and the holes in the dial being arranged so that the numbers 1 to 12 and 13 to 24 are alternately visible for twelve consecutive hours.
  • Timepieces of the kind defined above that is to say in which the dial is fixed and a member bearing the hour numbers is movable behind this dial, are described in numerous documents such as, for example , patents CH-A 7,197, CH-A 18,199 and CH-A 22,282.
  • timepieces include hour and minute display hands which are rotated in front of the dial by a clockwork movement at the rate of one revolution in twelve hours and one revolution in one hour respectively.
  • the dial does not bear the traditional signs designating the hour numbers, but it is pierced with twelve counters arranged in the locations where these signs are normally found.
  • a mobile disc placed under the dial has numbers 1 to 12 regularly distributed around its periphery and numbers 13 to 24 also regularly arranged between the previous numbers.
  • a mechanism linked to the movement of the timepiece moves the disc alternately in one direction and in the other, so that each number 1 to 12 appears behind one of the dial windows between one in the morning and one in the afternoon, and that each number 13 to 24 appears between one o'clock in the afternoon and one o'clock in the morning
  • the mobile disc bears the numbers 0 to 11 which are visible from midnight to noon, and the numbers 12 to 23 which are visible from noon to midnight.
  • a second movable disc bearing the numbers 0, 12, 12 and 24 regularly distributed around its periphery is disposed between the reciprocating movement disc mentioned above and the dial, so that one of these last four numbers appears in the window located at the location where the numeral 12 is inscribed in conventional timepieces.
  • This second disc is driven so that the number 0 appears in this window between midnight and one in the morning, the first number 12 between one in the morning and noon, the second number 12 between noon and one in the afternoon , and number 24 between one o'clock in the afternoon and midnight.
  • the purpose of the present invention is to provide a timepiece of the kind defined above which does not have this drawback, that is to say in which the drive mechanism of the disc bearing the hour numbers is more simple to realize that in the known timepieces described above and makes it easier to guarantee that the movements of this disc are made at very precise times.
  • timepiece described in patent CH-B 453 216 which also includes a fixed dial pierced with twelve openings distributed regularly around its periphery, and a movable disc bearing signs and located at this dial. But this timepiece is also of a different kind from that which has been defined above because the signs carried by the movable disc and visible through the holes in the dial do not represent the hour numbers.
  • these signs consist of simple spots, all having the same shape, a first series of twelve spots, visible from 6 am to 6 pm, being spots of ordinary paint, black for example, and a second series of twelve spots, each placed between two of the previous spots and visible from 6 o'clock in the evening to 6 o'clock in the morning, being spots of luminescent paint comprising for example tritium.
  • the timepiece according to the invention comprises a timepiece movement 1 which drives the display hands for hours 2 and minutes 3 as well as, optionally, a second hand not shown rotating around a common axis 4 in front of a dial 5.
  • a disc 6 movable in rotation about the axis 4 is placed under the dial 5. It is driven by a mechanism 7 forming part of the movement 1, in a manner which will be specified from case to case. Movement 1 and its connection with hands 2 and 3 will not be described in detail, since they can be of any kind and have no direct relation to the present invention. It should simply be noted that movement 1 drives hands 2 and 3 at the traditional speeds of one revolution in twelve hours and one revolution in one hour.
  • the dial 5 is opaque, except in one or more zones where it is transparent.
  • these transparent areas consist, by way of nonlimiting example, of apertures drilled in the dial 5 whose arrangement will be specified from case to case.
  • timepieces according to the invention are obviously intended to be mounted in a box or cabinet.
  • the means for this assembly will not be shown or described, because they can also be of any kind and also have no direct connection with the present invention.
  • the position of one of these elements will be called the position of a point located substantially in the center of the space it occupies on the dial 5 or on the disc 6.
  • the two angles formed by the spokes joining the axis of rotation 4 to two elements of the dial 5 or the disc 6, that is to say according to the above convention, the two angles formed by the spokes joining the axis 4 at the points located at the centers of the spaces occupied by these elements, will be designated as the angles formed by these two elements on this dial 5 or on this disc 6.
  • one of these two angles will be distinguished from the 'other by specifying that it is measured in one direction, which will be indicated, from one of the elements, which will also be indicated.
  • the twelve angular positions to which the hour numbers are written on the dial of a traditional timepiece will be designated by the references P1 to P12, the position P1 being that where the number 1 is located, the position P2 that where the number 2 is located, etc., up to position P12 which is where the number 12 is located.
  • each group will include at least a first sign representing the number of the time it is in the first half of a day when the hand 2 occupies the same angular position as the corresponding window, and at least a second sign representing the number of the time it is in the second half of the day when the hand 2 again occupies the same angular position as the corresponding window.
  • the dial 5 has a single window, designated by the reference g1 and located at the angular position P12.
  • the disc 6 therefore carries a single group of signs, comprising in this example a single first sign s1 representing the number 12, and a single second sign s2 representing the number 24.
  • These signs s1 and s2 are arranged on the periphery of the face of the disc 6 which is turned towards the dial 5, and form between them two angles of 180 ° both designated by the reference A.
  • the dimensions of the signs s1 and s2, the distance chet g1 are chosen so that these signs s1 and s2 appear successively through this window g1 when the disc 6 rotates.
  • the mechanism 7 for driving the disc 6 is arranged so that, each day, the latter remains stationary between midnight and noon in the position where the sign s1 is visible through the window g1, that the disc 6 then spins very quickly, at noon just, at an angle equal to the angle A, that is 180 ° in this example, that the disc 6 remains stationary from noon to midnight in its new position, where the sign s2 appears in the window g1 and, finally that the disc 6 rotates again by an angle equal to the angle A, that is 180 °, at just midnight, so that the sign s1 appears in the window g1.
  • the number 12 appears in the counter g1 between midnight and midday, and the number 24 between midday and midnight.
  • the user of the timepiece therefore always knows in which half of the day the time displayed by hands 2 and 3 is found.
  • the disc 6 can always rotate in the same direction, which can be either the direction of rotation of the needles of a watch or the opposite direction.
  • the mechanism 7 for driving this disc 6 can therefore be produced in a simpler way than that which alternately drives in one direction and in the other the disc bearing the hour numbers in the timepieces described in the CH- patents. A-7197, CH-A-18199 and CH-A-59451 mentioned above.
  • the mechanism 7 for driving the disc 6 has not been shown in detail since its production does not pose any particular problem for those skilled in the art who have the choice between several possibilities for building it.
  • This mechanism 7 can, for example, be entirely mechanical and be connected to the gear train ensuring the rotation of the hour hand 2.
  • this mechanism 7 may for example include one of the well-known devices which drive the ring bearing the numbers of the days of the month in timepieces with a so-called jumping calendar.
  • the mechanism 7 must of course be connected to the clockwork movement 1 so that this device operates every twelve hours, and not every twenty-four hours as in timepieces with a calendar. In addition, the mechanism 7 must be arranged so that the disc 6 rotates 180 ° each time this device operates.
  • movement 1 comprises a stepping motor powered by a source of electrical energy, such as a battery, and driving hands 2 and 3 in response to periodic driving pulses supplied by a generator.
  • a source of electrical energy such as a battery
  • driving hands 2 and 3 in response to periodic driving pulses supplied by a generator.
  • a generator generally comprising an oscillator and a frequency divider circuit.
  • the mechanism 7 for driving the disc 6 can be entirely mechanical, like that which has been described above. It can also include a second stepping motor supplied by the same source of electrical energy as the first, and driving the disc 6 in response to other driving pulses supplied by the same electronic circuit.
  • This electronic circuit is arranged in this case so as to supply this second motor with a predetermined number of driving pulses successively rapidly at just midday and at midnight just.
  • the gear train connecting this second motor to the disc 6 is of course arranged so that the disc 6 rotates 180 ° in response to these driving pulses.
  • the timepiece according to the invention comprises a movement 1 and hands 2 and 3 similar to those of the embodiment shown in FIG. 1. In order not to unnecessarily load the drawings, this movement 1 and these hands 2 and 3 have not been shown in the figures used to describe these other embodiments.
  • the dial 5 has three windows g2, g3 and g4 located respectively at positions P12, P4 and P8 and therefore forming, each with each of the other two, a 120 ° angle.
  • disc 6 carries three groups of signs.
  • the signs s3 and s4 forming the first group are intended to appear in the counter g2 and represent the numbers 12 and 24 respectively.
  • the signs s5 and s6 forming the second group are intended to appear in the counter g3 and respectively represent the number 4 and the number 16.
  • the signs s7 and s8 forming the third group are intended to appear in the window g4 and represent the number 8 and the number 20.
  • the first sign of each group forms with the first sign of each of the other groups an angle of 120 °.
  • first and second signs of each group form an angle of 180 ° between them, also designated by the reference A.
  • the drive mechanism 7 for the disc 6, which is not shown in FIG. 2, is arranged so that this disc 6 remains stationary between midnight and noon in the position shown in FIG. 2, which it rotates rapidly at just at noon, at an angle equal to angle A, or 180 ° , then it remains stationary until just midnight, and it turns again quickly from an angle equal to angle A, or 180 °, at this hour.
  • the numbers and digits 12, 4 and 8 appear respectively in the counters g2, g3 and g4 between midnight and noon. Between noon and midnight, the numbers 24, 16 and 20 appear respectively in these counters g2, g3 and g4. The user of the timepiece therefore always knows in which half of the day the time indicated by hands 2 and 3 is located.
  • the mechanism 7 for driving the disc 6 of the timepiece of FIG. 2 will not be described in detail, because it is similar to that which has been described in the case of FIG. 1 and can be produced in the same way way that the latter.
  • the direction of rotation of the disc 6 is also indifferent, since the angle A formed by the two signs of each group is equal to 180 °.
  • FIG. 3 illustrates another embodiment of the timepiece according to the invention, in which six windows can be provided in the dial 5.
  • the dial 5 of the timepiece comprises a first set of three counters g5 to g7, arranged in the same way as the counters g2 to g4 of FIG. 2.
  • the dial 5 further comprises a second set of three windows g8 to g10 located respectively at the angular positions P2, P6 and P10, at a distance from the axis 4 less than the distance from the windows g5 to g7 from this same axis 4.
  • the dial 5 therefore has a total of six windows.
  • the disc 6 of this embodiment carries six groups of signs.
  • the first three of these groups are formed by the signs s9 to s14 which are respectively identical to the signs s3 to s8 in FIG. 2 and are arranged like the latter.
  • the fourth group is formed by the signs s15 and s16. These are arranged respectively at the same angular positions as the signs s14 and s13, at the same distance from the axis 4 as the counters g8 to g10. They respectively represent the number 2 and the number 14 and are intended to appear in the g8 window.
  • the fifth group is formed by the signs s17 and s18, which are arranged respectively at the same angular positions as the signs s10 and s9, at the same distance from the axis 4 as the counters g8 to g10. They respectively represent the number 6 and the number 18, and are intended to appear in the g9 window.
  • the sixth group is formed by the signs s19 and s20, which are arranged respectively at the same angular positions as the signs s12 and s11, at the same distance from the axis 4 as the counters g8 to g10. They represent the numbers 10 and 22 respectively, and are intended to appear in the g10 window.
  • the angle A formed by the first and the second sign of each group is therefore equal to 180 ° , as in the case of FIG. 2.
  • the drive mechanism 7 for the disc 6 is therefore identical to that of FIG. 2, that is to say that it rotates this disc 180 ° at just midday and at midnight just so that the numbers and numbers 12, 2, 4, 6, 8 and 10 appear respectively in the counters g5 to g10 between midnight and noon, and the numbers 24, 14, 16, 18, 20 and 22 appear respectively between noon and midnight.
  • FIG. 4 illustrates another form of execution of the timepiece according to the invention, in which the counters are higher in number than in the case of FIG. 2, while being regularly arranged at the periphery of the dial 5 and all at the same distance from axis 4.
  • the dial 5 comprises four apertures g11 to g14 respectively located at positions P12, P3, P6 and P9, all at the same distance from the axis 4 of hands 2 and 3.
  • Disc 6 carries four groups of signs.
  • the first of these groups comprises signs s21 and s22 respectively representing the numbers 12 and 24.
  • the second group comprises signs s23 and s24 representing respectively the number 3 and the number 15.
  • the third group comprises signs s25 and s26 representing respectively the number 6 and the number 18.
  • the fourth group includes signs s27 and s28 respectively representing the number 9 and the number 21.
  • the first signs of these four groups are arranged every 90 ° at the periphery of the disc 6, of so as to appear respectively in the windows g11, g12, g13 and g14 when the disc 6 is in the position shown in FIG. 5.
  • the first sign, s21, s23, s25 or s27, and the second sign, s22, s24, s26 or s28 form an angle A1 of 135 ° , this angle being measured clockwise from the first sign.
  • the drive mechanism 7 for the disc 6 arranged so that the disc 6 remains stationary in the position shown in FIG. 4 from midnight to noon, that it rotates rapidly by an angle equal to the angle A1, that is 135 ° , anti-clockwise at just midday, that it remains in this new position until just midnight, and that , at this hour, it turns rapidly by an angle A2 equal to (360 ° - A1), that is to say 225 ° , also in an anticlockwise direction.
  • Disc 6 therefore occupies from midnight to noon, the position represented in FIG. 4, where the numbers or numbers 12, 3, 6 and 9 appear respectively in the counters g11 to g14, and from noon to midnight a second position where the numbers 24, 15, 18 and 21 appear respectively in these counters.
  • the user of the timepiece therefore always knows whether the time displayed by hands 2 and 3 is located in the first or in the second half of the day.
  • the mechanism 7 for driving the disc 6 of the embodiment of FIG. 4 can be entirely mechanical. In this case, it may for example include a device similar to that which is shown in FIG. 5.
  • the device of FIG. 5 is derived from those which are well known under the name of Maltese cross devices and will not be described in detail.
  • the arms 8a to 8f of the driven wheel 8 do not form angles between them equal, but angles having alternately 45 ° and 75 ° , and the driving wheel 9 has two diametrically opposite drive fingers 9a and 9b.
  • the driven wheel 8 is connected to the disc 6 of FIG. 4 by a gear train, not shown, having a multiplication ratio of three.
  • the driving wheel 9 is connected to the clockwork movement 1 by a mechanism, also not shown, which makes it perform a very rapid U-turn every day at just midday and just midnight.
  • a mechanism can be similar to the mechanism 7 described above in the case of FIG. 1.
  • the gear train and the mechanism mentioned above are arranged so that the wheel 8 is stationary from midnight to noon of each day, that it rotates by 45 ° in response to the U-turn made by the wheel 9 at noon , that it then remains stationary from noon to midnight, and that it turns 75 ° in response to the U-turn made by the wheel 9 at midnight.
  • These 45 ° and 75 ° rotations of the wheel 8 respectively cause the 135 ° and 225 ° rotations of the disc 6 mentioned above.
  • the mechanism 7 for driving the disk 6 of the embodiment of FIG. 4 may comprise a stepping motor connected to the disk 6 by a gear train and receiving d an electronic circuit for controlling a first number of driving pulses at midday and a second number of driving pulses at midnight.
  • This gear train and these numbers of drive pulses are of course determined so that the disc 6 makes, at noon and midnight, the rotations of 135 ° and 225 ° mentioned above.
  • the number of these counters can only be a sub-multiple of 12, i.e. 1, 2 , 3, 4, 6 or 12.
  • A1 and A2 are respectively the angle of rotation of the disc 6 at noon and midnight, and AG ⁇ , j is the angle formed fapr any two wickets gi and gj.
  • Equation 1 expresses the fact that disk 6 must make one complete revolution per day.
  • the inequalities 2 and 3 express the fact that any sign normally appearing in a given window must never appear in another window except in a fleeting manner, during a rotation of the disc 6.
  • equation 1 and these inequalities 2 and 3 show, for example, that it is not possible to produce a timepiece according to the invention of the kind defined above in which the number of counters is even and the angles A1 and A2 are equal. Indeed, if A1 and A2 are equal, equation 1 implies that they are both 180 °. If in addition the number of apertures is even, there is always one or more angles AG ⁇ , j equal to 180 °. The inequalities 2 and 3 would therefore not be verified in such a case.
  • the dial 5 has three windows arranged like those of the embodiment of Figure 2 and designated by the same references g2 to g4.
  • the disc 6 carries three groups of signs, each comprising two first and two second signs.
  • the first and second signs of each group are respectively identical to the first and second signs of each of the groups of signs in FIG. 2, and are designated by the same references s3 to s8.
  • each first and each second sign of a group forms respectively with a first and a second sign of each of the other two groups an angle of 120 ° .
  • each first sign of each group forms with the two second signs of the same group angles A of 90 ° .
  • the drive mechanism 7 for driving the disc 6 of FIG. 6 is of course arranged so that the disc 6 rotates by an angle equal to the angle A below: sus, that is 90 °, at just midday and at midnight fair. This mechanism 7 will not be described in detail since it can be easily deduced from that which has been described in the case of FIG. 2.
  • the dial 5 has four windows arranged like those of the embodiment of Figure 4 and designated by the same references g11 to g14.
  • the disc 6 carries four groups of signs each comprising three first and three second signs.
  • the first and second signs of each group are respectively identical to the first and second signs of each of the groups of signs in FIG. 4, and are designated by the same references s21 to s28.
  • a first sign of each group forms with a first sign of two of the other three groups an angle of 90 ° , and with a first sign of the third of the other groups an angle of 180 ° , so that when a first sign s21 of the first group appears in the first window g11, a first sign s23 of the second group, a first sign s25 of the third group and a first sign s27 of the fourth group appear respectively in the counters g12, g13 and g14.
  • the drive mechanism 7 for driving the disk 6 of FIG. 7 is of course arranged so that this disk 6 rotates in an anticlockwise direction by an angle equal to the angle A1 above, either 45 ° , at midday just, and at an angle equal to the angle A2 above, or 75 °, at midnight just.
  • This mechanism 7 will not be described in detail, because it can be easily deduced from that which has been described in the case of FIG. 4.
  • FIGS. 6 and 7 are by far not the only ones which can be produced by placing several identical signs on the disc 6.
  • the number of counters can only be a sub-multiple of 12 if the counters are distributed regularly on the periphery of the dial 5.
  • A1 and A2 are respectively, as above, the angles of rotation of the disc 6 at noon and midnight, and AGi, j is the angle formed by any two wickets gi and gj .
  • N is the number of first signs, or second signs, of each group of signs
  • k is a first whole number such as 0 ⁇ k * N
  • j is a second whole number equal to k or kt1 and further such that 0 ⁇ j ⁇ N.
  • Equation 4 expresses the fact that the disc 6 must turn one full revolution every N days
  • equation 5 expresses the fact that any sign normally appearing in a given window must never appear in another window other than fleetingly during rotation of the disc 6.
  • Equation 4 and inequality 5 again show that if the windows are distributed regularly around the periphery of the dial 5 and their number is even, that is 2, 4, 6 or 12, it is not possible to choose equal values for angles A1 and A2.
  • an angle AGi, j at least is equal to 180 ° .
  • the inequality 5 can be written (k + j). 180 ° / N 180 °.
  • the counters provided in the dial 5 are distributed regularly around the periphery of the latter.
  • FIG. 8 represents, by way of nonlimiting example, a timepiece according to the invention in which the dial 5 is pierced by four apertures g15 to g18 respectively arranged in the angular positions P12, P2, P7 and P9.
  • the disc 6 carries four groups of signs each comprising three first signs s29, s31, s33 and s35 and three second signs s30, s32, s34 and s36. These signs s29 to s36 respectively represent the digits and numbers 12, 24, 2, 14, 7, 19, 9 and 21 and are arranged in the manner shown in FIG. 8.
  • the angles A1 and A2 formed respectively by each first sign with the two second signs which are adjacent to it have values of 45 ° and 75 ° .
  • the mechanism 7 for driving the disc 6 is therefore similar to that of FIG. 7.
  • the signs carried by the disc 6 must be chosen so as to represent the hour numbers indicated by the hand 2 when it is at the same angular position as the counters.
  • the angular position P12 is not necessarily occupied by a window.
  • the shape of the counters may be different from that which has been shown.
  • the windows can be replaced by openings made in an opaque layer disposed on one side of a dial 5 made of a transparent material such as glass.
  • the signs representing the number 24 may be replaced by signs representing the number 0.
  • the order of the signs on the disc 6 can be reversed, the mechanism 7 then being arranged so as to rotate this disc in the opposite direction to the one that was mentioned.
  • the mechanism 7 can be arranged so as to make turn the disc 6 in the opposite direction to that mentioned from an angle A2 at noon and an angle A1 at midnight, the order of the signs on the disc 6 remaining as shown in these figures.
  • the mechanism 7 can be arranged so as to rotate the disc 6 in the direction which has been mentioned, but also from an angle A2 at noon and an angle A1 at midnight, the order of the signs on the disc 6 then being inverted with respect to that which is represented.
  • the mechanism 7 can also be arranged so that the disc 6 rotates at other hours than noon and midnight, for example at six in the morning and at six in the evening. In this case, the signs carried by the disc 6 are of course modified accordingly.
  • the disc 6 itself can be replaced by a crown similar to that which bears the numbers of the days of the month in most calendar timepieces.
  • the hands 2 and 3 as well as the seconds hand if necessary, can be replaced by discs or other elements rotating around the axis 4 and bearing any index.
  • the signs representing the hour numbers can be arranged on the disc 6 so that, when the latter is stationary, they appear that, when the latter is stationary, they appear in all the windows in a normal vertical position, and not more or less inclined or even upside down as has been represented in FIGS. 2 to 4 and 6 to 8.

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EP87111858A 1986-09-09 1987-08-17 Pièce d'horlogerie permettant de distinguer les heures d'une moitié d'un jour des heures de l'autre moitié de ce jour Expired - Lifetime EP0259649B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3623/86 1986-09-09
CH362386A CH665326GA3 (enrdf_load_stackoverflow) 1986-09-09 1986-09-09

Publications (2)

Publication Number Publication Date
EP0259649A1 EP0259649A1 (fr) 1988-03-16
EP0259649B1 true EP0259649B1 (fr) 1990-10-24

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EP87111858A Expired - Lifetime EP0259649B1 (fr) 1986-09-09 1987-08-17 Pièce d'horlogerie permettant de distinguer les heures d'une moitié d'un jour des heures de l'autre moitié de ce jour

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US (1) US4740934A (enrdf_load_stackoverflow)
EP (1) EP0259649B1 (enrdf_load_stackoverflow)
JP (1) JPS6370189A (enrdf_load_stackoverflow)
CH (1) CH665326GA3 (enrdf_load_stackoverflow)
DE (1) DE3765729D1 (enrdf_load_stackoverflow)

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EP0389732B1 (fr) * 1989-03-30 1993-02-24 PINKO S.r.L. Dispositif d'affichage numérique-analogique pour pièce d'horlogerie
CH681265B5 (enrdf_load_stackoverflow) * 1989-08-29 1993-08-31 Stefano Gori
US5349572A (en) * 1993-05-10 1994-09-20 Jaroslay Belik Clock dial
DE19833595C2 (de) * 1998-07-25 1999-11-11 Iacov Grinberg Mechanische Uhr
DE10050557C1 (de) * 2000-10-12 2001-11-08 Walter Haselberger Uhrenanzeigevorrichtung
US20060268666A1 (en) * 2005-05-31 2006-11-30 Lizzi Ronald S Electronic device with view-inhibitable display
US9459590B1 (en) 2013-04-22 2016-10-04 Donald J. Lecher Methods and devices using a series of sequential timekeeping periods
US9612577B2 (en) 2013-04-22 2017-04-04 Donald J. Lecher Device displaying a series of sequential timekeeping periods
EP3800513B1 (fr) * 2019-10-04 2023-08-09 ETA SA Manufacture Horlogère Suisse Pièce d'horlogerie comprenant des moyens d'indication am-pm
PL245929B1 (pl) * 2023-07-17 2024-11-04 Lubelska Polt Zegar wskazówkowy z ruchomą tarczą do wskazywania okresów czasu, oraz sposób i program komputerowy do jego wskazywania
PL245930B1 (pl) * 2023-07-17 2024-11-04 Lubelska Polt Zegar wskazówkowy z ruchomym pierścieniem do wskazywania okresów czasu, oraz sposób i program komputerowy do jego wskazywania

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CH7197A (fr) * 1893-10-27 1894-02-15 Couleru Meuri Chs Nouvelle montre 24 heures
CH18199A (fr) * 1898-12-13 1899-11-15 Camille Robert Montre à vingt-quatre heures
CH22282A (fr) * 1900-08-25 1902-01-15 Laurent Roux dispositif aux piéces d'horlogerie dont l'aiguille des heures fait un tour en 12 heures, permettant la lecture de 1 à 24 heures
CH59451A (fr) * 1912-04-09 1913-05-16 Gaspar Roth & Cie Mécanisme adaptable à une pièce d'horlogerie pour indiquer automatiquement et alternativement les heures de minuit à midi, puis de midi à minuit
GB510739A (en) * 1938-01-17 1939-08-08 Peter Guenther Wachtel Improvements in or relating to clocks and watches
DE1478890U (enrdf_load_stackoverflow) * 1939-03-04 1939-12-21
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CH453216A (fr) * 1966-03-24 1968-06-14 Gruen Watch Mfg Co S A Pièce d'horlogerie
DE2132540A1 (de) * 1971-06-30 1973-01-11 Karl Ehredt 24-stunden-uhr in der bisherigen 12er teilung

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CH665326GA3 (enrdf_load_stackoverflow) 1988-05-13
US4740934A (en) 1988-04-26
DE3765729D1 (de) 1990-11-29
EP0259649A1 (fr) 1988-03-16
JPS6370189A (ja) 1988-03-30

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