US3518464A - Electromagnetic driving mechanism - Google Patents

Electromagnetic driving mechanism Download PDF

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Publication number
US3518464A
US3518464A US786620A US78662068A US3518464A US 3518464 A US3518464 A US 3518464A US 786620 A US786620 A US 786620A US 78662068 A US78662068 A US 78662068A US 3518464 A US3518464 A US 3518464A
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United States
Prior art keywords
magnetic
driven wheel
driven
parts
magnetic pole
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Expired - Lifetime
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US786620A
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English (en)
Inventor
Tsuneta Kawakami
Hitoshi Ikeno
Masami Sato
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Hattori Tokeiten KK
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Hattori Tokeiten KK
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • H02K7/065—Electromechanical oscillators; Vibrating magnetic drives
    • 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
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/02—Devices allowing the motion of a rotatable part in only one direction
    • G04B11/04—Pawl constructions therefor, e.g. pawl secured to an oscillating member actuating a ratchet
    • 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
    • G04C3/08—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 mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically
    • G04C3/10—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 mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means
    • G04C3/101—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 mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means constructional details
    • G04C3/104—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 mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means constructional details of the pawl or the ratched-wheel
    • G04C3/105—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 mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means constructional details of the pawl or the ratched-wheel pawl and ratched-wheel being magnetically coupled
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1502—Escapement
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1526—Oscillation or reciprocation to intermittent unidirectional motion
    • Y10T74/1553—Lever actuator
    • Y10T74/1555—Rotary driven element

Definitions

  • Magnetic driving mechanism comprises a driven wheel, a magnetic pole unit having at least three spaced magnetic poles, and exciting means to oscillate said magnetic pole unit whereby said driven wheel is rotated unidirectionally in a self-starting manner.
  • the present invention relates to magnetic driving mechanism of the self-starting type adapted to be generally used in clocks or watches.
  • Known magnetic driving mechanisms of the selfstarting type generally comprises a rotating wheel made of a magnetic substance and provided with circumferentially spaced teeth each having a tooth profile asymmetric with respect to the radial direction of said rotating wheel, and an oscillating element provided with a magnetic pole acting magnetically on the teeth upon the oscillating element being excited, so as to rot-ate the rotating wheel in a self-starting manner.
  • the teeth of the rotating wheel involve an extremely complicated tooth profile and require high precision which cannot be obtained by usual press works, none has heretofore come into commercial use.
  • employment of such prior magnetic driving mechanism as an escapement mechanism has a tendency to adverse effects on the frequency of the oscillating element, caused by the asymmetric tooth profile. It will thus be apparent that an escapement mechanism of this type is lacking in isochronism.
  • magnetic driving mechanism comprising a driven wheel having at a peripheral part thereof a magnetically neutral circle, and magnetic driven parts arranged on opposite sides of said magnetically neutral circle in an alternately staggered relation to each other; at least one magnetic pole driving unit having at least three magnetic poles located in opposed relation to said magnetic driven parts; and exciting means to oscillate said magnetic pole driving unit in a direction across said magnetically neutral circle, the sum total of rotating energy exerted on said magnetic driven par-ts by magnetic attractive forces of said magnetic pole driving unit at the time when said magnetic pole driving unit is offset toward one of its alternative amplitude positions being larger in magnitude than the sum total of rotating energy exerted on said magnetic driven par-ts by magnetic 3,518,464 Patented June 30, 1970 ice attractive forces of said magnetic pole driving unit at the time when said magnetic pole driving unit is offset toward the other amplitude position, and further the former rotating energy and the latter rotating energy acting in opposite directions to each other at least at the time when said driven wheel starts to rotate.
  • the magnetic pole units made an oscillatory movement under a condition in which the driven wheel is within a magnetically stable angular zone.
  • the driven wheel will make a rotational displacement alternately in opposite directions.
  • the driven wheel may be rotated into a new and adjoining magnetically stable zone by the larger rotating energy.
  • the driven wheel is naturally subjected to external loads of various types and, therefore, the driven wheel upon its movement into a new stable zone may follow the magnetic poles with an inevitable phase lag with respect to the latter.
  • the driven wheel after having moved into saidadjoining stable zone, is not kept in said zone but is rotated afresh in the same direction by the succeeding oscillation of the magnetic pole units so that the driven wheel may start to rotate in a fixed direction in a self-starting manner.
  • the driven wheel Once the driven wheel starts rotating, it may continue its steady and unidirectional rotation due to said larger rotating energy which acts on the driven wheel in the rotating direction of the latter.
  • At least one pitch provided between any adjacent two of at least three magnetic poles is somewhat larger than an integer times the pitch between any adjacent two parts .of said driven parts, while another pitch provided between two adjacent magnetic poles is somewhat smaller than an integer times said pitch of said driven parts.
  • the driven wheel may be made from either a disc in which the inner and outer driven parts, each being symmetrical 'with respect to the radial direction of the disc, are arranged in a continuously sinuous manner, or a modified disc in which the inner and outer driven parts are arranged in discontinuous manner.
  • another modification of the driven wheel comprises a disc of gear wheel type having therearound a plurality of circumferentially spaced first driven parts, and another disc of gear wheel type having therearound a plurality of circumferentially spaced second driven parts, the two discs being superposed one over another.
  • the driven parts provided in the driven wheel of this invention can be easily fabricated by conventional press works.
  • An object of the present invention is the provision of magnetic driving mechanism to steadily rotate the driven wheel in a fixed direction, which is easy to fabricate and moderate in price.
  • FIG. 1 is a plan view illustrating a preferred embodiment of magnetic driving mechanism according to the present invention
  • FIG. 2v is a side view, with a part thereof broken away, of the magnetic driving mechanism of FIG. 1;
  • FIG. 3 is an enlarged perspective view showing a magnetic pole unit
  • FIG. 4 is an enlarged diagrammatic view illustrating a positional relationship between the driven parts and the magnetic poles in their stable positions
  • FIG. 5 is a schematic illustrating sine wave forms which 'will assist in understanding the relative displacement of the magnetic poles to the driven wheel;
  • FIG. 6 is a graph illustrating variation of the rotating torque through a complete cycle of the relative displacement shown in FIG. 5;
  • FIG. 7 is a side view illustrating a modified embodiment of the driven wheel
  • FIG. 8 is a side view showing another embodiment of the driven wheel.
  • FIG. 9 is a side view illustrating still another embodiment of the driven wheel.
  • FIGS. 1 to 3 showing a preferred embodiment which is provided with magnetic pole units each having three magnetic poles.
  • Oppositely spaced parallel base plates 1 support on their foremost extremities a traverse shaft 2 in a freely rotatable manner.
  • Fixed on the shaft 2 is a driven wheel 3.
  • a damper disc 4 of brass is mounted for rotation on the shaft 2.
  • the base plates 1 are integral with each other at their rearmost ends through a connecting portion on which is mounted by screws 5 the rearmost end of an oscillating spring element 6 extending tangentially of the driven wheel 3.
  • a C-shaped permanent magnet 7 Secured to the free or foremost end of the oscillating element 6 is a C-shaped permanent magnet 7 by means of screws 8.
  • the magnet 7 includes oppositely spaced arms the forward ends of which are formed with a pair of oppositely facing magnetic pole driving units 9.
  • the driven wheel 3 comprises a disc, preferably made of magnetic substance such as Permalloy which has high magnetic permeability.
  • the disc of the driven wheel 3 comprises a magnetically neutral portion 20 of annular configuration, magnetic outer driven parts 10 extending radially of the disc and arranged around the outer periphery of the neutral portion 20 at a fixed circumferential pitch and separated by notches 11 which are provided between adjacent outer driven parts, and magnetic inner driven parts 12 extending radially of the disc and arranged along the inner periphery of the neutral portion 20 at a fixed circumferential pitch with apertures 13 provided between adjacent inner driven parts.
  • the outer and inner driven parts 10 and 12 are of rectangular contour symmetrical with respect to the radial direction of the driven wheel 3.
  • the inner driven parts .12 are located between adjacent outer driven parts 10, that is to say, the inner driven parts 12 are located in a staggered relation to the outer driven parts 10.
  • a magnetically neutral circle 14 is positioned substantially halfway of the radial width of the annular neutral portion 20, as shown by a dotted line in FIG. 2.
  • each of the magnetic pole driving units 9 comprises three magnetic poles 15a, 15b and 15c of a rectangular configuration, said magnetic poles being disposed in parallel and spaced relation to each other and also in opposed relation to said neutral circle 14 of the driven wheel 3.
  • the magnetic poles are, moreover, arranged in such a manner that a first pitch P provided between a first pair of adjacent magnetic poles 15a and 15b is longer than a pitch P measured along the neutral circle 14 between any adjacent outer driven parts 10, and that a second pitch P provided between a second pair of adjacent magnetic poles 15b and 15c is shorter than the above-mentioned pitch P.
  • a first pitch P provided between a first pair of adjacent magnetic poles 15a and 15b is longer than a pitch P measured along the neutral circle 14 between any adjacent outer driven parts 10
  • a second pitch P provided between a second pair of adjacent magnetic poles 15b and 15c is shorter than the above-mentioned pitch P.
  • the driven wheel has an outer diameter of 12. mm., a neutral circle diameter of 1011 mm., the pitch P measured along the neutral circle between and adjacent outer. driven parts 10 of 0.79 mm. and the number of outer driven parts is 40, the *first pitch P of the magnetic pole unit may be 0.87 mm. and the second pitch P may be 0.64 mm. It should be noted that the magnetic poles 15a, 15b and are equal in width to the width of the outer driven parts 10.
  • Driving means for actuating the oscillating element 6 may be of the conventional type which comprises a cylindrical magnet core 16 projecting upwardly from the upper surface of the forward end of said oscillating element 6, and a hollow cylindrical coil 17 adapted to receive the magnet core 16.
  • the coil 17 is mounted on a holder 18 which is fixed to the base plates 1.
  • the driven wheel 3 may be at a standstill in its magnetically stable position.
  • the centers 19a, 19b and of the magnetic poles 15a, 15b and 15c are all located on the neutral circle 14 so that the resultant of magnetic attractive forces of the three magnetic poles 15a, 15b and 150, applied to their associated three outer driven parts 10, and the resultant of magnetic attractive forces, applied to'their associated three inner driven parts 12, are equal in magnitude but acting in opposite directions to each other.
  • the driven wheel 3 is maintained at a standstill.
  • the oscillating element 6 will commence oscillating the magnetic pole units 9 in a direction radially of the driven wheel 3 across the neutral circle 14 and also such oscillatory movement of the magnetic pole units 9 will gradually increase in amplitude.
  • the resultant of magnetic attractive forces acting on the outer driven parts 10 is greater in magnitude than the resultant of magnetic attractive forces acting on the inner driven parts 11 with the result that the driven wheel 3 may rotate in a counterclockwise direction (as viewed in FIG. 4) through a limited angle.
  • the driven wheel 3 may conversely make a clockwise rotation through a limited angle. From the foregoing, it will be apparent that the driven wheel 3 is permitted to rotate alternatively forwards and backwards within a limited angle.
  • Such alternative rotational displacement of the driven Wheel 3 in opposite directions is defined within the angular range in which the driven wheel 3 may be restored to its original, magnetically stable position, that is to say, within a magnetically stable angular zone, and moreover the driven parts of the driven wheel 3 may follow the magnetic pole units with some phase lag with respect to the latter, because of loads due to inertia and bearing friction of the driven wheel or due to gear trains intermeshed with the driven wheel.
  • the sum total of rotating energy applied to the outer driven parts 10 at the time when the magnetic pole units are oifset radially outwardly is larger in magnitude than the sum total of energy applied to the inner driven parts 12 at the time when the magnetic pole units are offset radially inwardly, whereby the rotational displacement of the driven wheel 3 at the time when the magnetic pole units are offset radially outwardly is larger in angular amount than when the magnetic pole units are offset radially inwardly.
  • the driven wheel 3 after having thus gotten away from a magnetically stable angular zone, will move into a new and adjoining stable position and at this time the driven parts of the driven wheel, rotated by virtue of the magnetic attractive forces of the magnetic poles, may follow the magnetic poles with somewhat of a phase lag with respect to the latter by the reason of the loads, as described above, applied to the driven wheel.
  • phase lag causes the driven wheel to rotate continuously and unidirectionally whereby the driven wheel 3 is made to rotate with a counter-clockwise rotational movement in a self-starting manner.
  • the damper disc 4 has for its object to smooth out the rotational movement of the driven wheel.
  • FIG. 5 Illustrated in FIG. 5, is a curve G showing the relative displacement of the center 19b of the intermediate magnetic pole 15b to the driven wheel 3 which makes a steady rotation in a counter-clockwise direction, including the above-mentioned phase lag h. It will be seen that the curve G is of substantially sine wave form. While the relative displacement in connection with the remaining magnetic poles 15a and 15c may be also shown by sine wave forms substantially similar to said curve G, these additional sine wave forms are omitted in FIG. 5.
  • FIG. 6 is a graph showing variation of the resultant of rotating torques exerted on the driven wheel 3 by the three magnetic poles 15a, 2151; and 150 during a complete cycle period of the sine wave form G shown in FIG. 5.
  • a torque curve T indicates that almost all of the rotating toruqes are applied to the driven wheel 3 in the forward or counter-clockwise direction, whereas the rotating torque exerted on the driven wheel 3 in the backward or clockwise direction is small in magnitude and also extremely short in period so that the driven wheel 3 may take a steady and unidirectional rotation.
  • a magnetic pole unit may be provided in which the first pitch P is 0.94 mm. and the second pitch P is 0.71 mm.
  • FIG. 7 shows a modified driven wheel 103 which has a neutral portion reduced in its radial width as compared with that of FIG. 2.
  • components indicated at 102, 110, 111, 112 and 113 are substantially identical in their functions with the corresponding parts shown in FIG. 2.
  • FIG. 8 shows a further modified driven wheel 203 which comprises a disc of synthetic resin on which are embedded outer and inner driven parts 210 and 212 with no neutral portion being provided therebetween, said outer and inner driven parts 210 and 212 being made of magnetic substance having high magnetic permeability.
  • the neutral circle is coincident with the inner portions of the outer drivcn parts 210 and the outer portions of the inner driven parts 212.
  • the magnetic attractive forces exerted by the magnetic poles on the driven wheel is increased in magnitude with the result that the self-start ing performance of the driven wheel may be improved.
  • FIG. 9 there is shown another modified driven wheel 303 comprising a disc 303a of gear wheel type having therearound a plurality of circumferentially spaced first driven parts 310, and a disc 303b of gear wheel type having therearound a plurality of circumferentially spaced second driven parts 311, said discs 303a and 303b being equal in diameter and superposed one on the other in such a manner that the first driven parts 310 are staggered in relation to the second driven parts 311.
  • the discs 303a and 3031) are spaced or not depending on whether a neutral portion is desired between the two sets of driven parts. In either event the neutral circle is between the discs.
  • a magnetic pole unit 309 used in cooperation with this driven wheel 303 is caused to oscillate in the axial direction of the traverse shaft 302 on which discs 303a and 303b are fixed.
  • Components indicated at 306, 307 and 308 in FIG. 9 are substantially identical in their functions with the counter parts shown in FIGS. 1 and 2.
  • the magnetic poles should be arranged in such a manner that at least one pitch among pitches provided between any adjacent magnetic poles is somewhat larger than an integer times the pitch P provided between the driven parts while at least one other pitch between adjacent magnetic poles is somewhat smaller than an integer times said pitch P.
  • Magnetic driving mechanism comprising a driven wheel having at its periphery a first set and a second set of magnetic driven parts disposed respectively on opposite sides of a magnetically neutral circle, the magnetic driven parts of each said set being spaced circumferentially from one another and the magnetic driven parts of said second set being staggered relative to the magnetic driven parts of said first set, at least one magnetic pole driving unit having at least three magnetic poles located in opposed relation to said magnetic driven parts, and exciting means for oscillating said magnetic pole driving units in a direction across said magnetically neutral circle to apply rotating energy alternately to said two sets of magnetic driven parts, one pitch between two of the poles of said driving units being greater than an integer times the pitch of said driven parts measured along said neutral circle and another pitch between two of the poles of said driving unit being less than an integer times said pitch of said driven parts, the sum total of rotating energy exerted on said magnetic driven parts by said magnetic pole driving unit at a time when said driving unit is at one of its amplitude positions being larger than the sum total of rotating energy exerted on said magnetic driven
  • Magnetic driving mechanism in which said two sets of magnetic parts comprise an outer set of said magnetic parts at the periphery of said driven wheel and an inner set of said magnetic parts disposed radially inwardly of said outer set, said driving unit oscillating radially of said Wheel.
  • Magnetic driving mechanism in which there are two said magnetic pole driving units disposed on opposite sides of said wheel and facing each other.
  • said driven wheel comprises a disc of magnetically permeable material, said magnetic parts of said outer set being spaced by notches in the periphery of said disc and said magnetic parts of said second set being spaced by apertures in said disc.
  • Magnetic driving mechanism in which said driven wheel comprises a disc of non-mag- 8 netic material and said magnetic driven parts comprise spaced portions of magnetically permeable material set in said disc.
  • Magnetic driving mechanism according to claim 5, in which said disc is formed of synthetic resin material.
  • Magnetic driving mechanism in which said driven wheel comprises two discs fixed on a common shaft, sad first set of magnetic driven parts comprising spaced teeth on one said disc and said second set of magnetic driven parts comprising spaced teeth on the other said disc, said magnetic poled driving unit being oscillated in a direction parallel to the axis of said discs.
  • one said pitch of the poles of said magnetic pole driving unit is from 1.1 to 1.2 times said pitch of said driven parts and another said pitch of said magnetic pole driving unit is from 0.8 to 0.9 times said pitch of said driven parts.
  • Magnetic driving mechanism according to claim 1, further comprising damper means connected with said driven wheel to smooth the rotation of said wheel.
  • Magnetic driving mechanism in which said means for oscillating said magnetic pole driving unit comprises a solenoid and means for periodically exciting said solenoid.
  • Magnetic driving mechanism in which each of said magnetic driven parts is symmetrical with respect to a radius of said driven wheel bisecting said driven part.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnetism (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
  • Transmission Devices (AREA)
US786620A 1967-12-30 1968-12-24 Electromagnetic driving mechanism Expired - Lifetime US3518464A (en)

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3671825A (en) * 1970-08-07 1972-06-20 Armec Corp Timing motor with resonant members
US3690191A (en) * 1970-10-22 1972-09-12 Siemens Ag Device for converting a reciprocating motion into a stepwise rotary motion
US3917965A (en) * 1970-06-24 1975-11-04 Omega Brandt & Freres Sa Louis Transmission device for a horological mechanism
US4559456A (en) * 1983-06-15 1985-12-17 Matsushita Electric Works, Ltd. Battery powered electric appliance
US4793199A (en) * 1985-12-19 1988-12-27 Messerschmitt-Bolkow-Blohm Gmbh Electromagnetic precision rotary drive
US5025428A (en) * 1990-12-17 1991-06-18 Wit Jarochowski Electromagnetic escapement for mechanically driven watch or clock
US20050256549A1 (en) * 2002-10-09 2005-11-17 Sirius Implantable Systems Ltd. Micro-generator implant
US20090171404A1 (en) * 2006-03-17 2009-07-02 Leland Standford Junior University Energy generating systems for implanted medical devices
US8556122B2 (en) * 2007-08-16 2013-10-15 S.C. Johnson & Son, Inc. Apparatus for control of a volatile material dispenser
EP2887157A1 (de) * 2013-12-23 2015-06-24 The Swatch Group Research and Development Ltd. Optimierte Uhrhemmung
CN104730898A (zh) * 2013-12-23 2015-06-24 斯沃奇集团研究和开发有限公司 用于包括磁性擒纵机构的钟表机芯中的轮副的角速度调节装置
CN104730907A (zh) * 2013-12-23 2015-06-24 斯沃奇集团研究和开发有限公司 调节装置
WO2015096979A2 (fr) 2013-12-23 2015-07-02 The Swatch Group Research And Development Ltd Echappement naturel
WO2015097172A3 (fr) * 2013-12-23 2016-01-07 The Swatch Group Research And Development Ltd Dispositif regulateur de la vitesse angulaire d'un mobile dans un mouvement horloger comprenant un echappement magnetique
CN105849653A (zh) * 2013-12-23 2016-08-10 尼瓦洛克斯-法尔股份有限公司 磁性和/或静电谐振器
JP2016540987A (ja) * 2013-12-23 2016-12-28 ウーテーアー・エス・アー・マニファクチュール・オロロジェール・スイス 計時器用同期機構
US9927773B2 (en) 2013-12-23 2018-03-27 The Swatch Group Research And Development Ltd Natural escapement

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SU1278994A1 (ru) * 1974-07-05 1986-12-23 Киевский Ордена Ленина Политехнический Институт Им.50-Летия Великой Октябрьской Социалистической Революции Пьезоэлектрический двигатель

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US2913905A (en) * 1953-11-07 1959-11-24 Horstmann Magnetics Ltd Magnetically coupled oscillatory and rotary motions
US2946183A (en) * 1955-06-14 1960-07-26 Horstmann Magnetics Ltd Self-starting magnetic escapement mechanisms
US3148497A (en) * 1961-06-01 1964-09-15 Cecil F Clifford Synchronised magnetic escapement
US3171991A (en) * 1962-01-08 1965-03-02 Baumer Herbert Electromagnetically actuated tuning fork drive adapted for clockwork

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US2913905A (en) * 1953-11-07 1959-11-24 Horstmann Magnetics Ltd Magnetically coupled oscillatory and rotary motions
US2946183A (en) * 1955-06-14 1960-07-26 Horstmann Magnetics Ltd Self-starting magnetic escapement mechanisms
US3148497A (en) * 1961-06-01 1964-09-15 Cecil F Clifford Synchronised magnetic escapement
US3171991A (en) * 1962-01-08 1965-03-02 Baumer Herbert Electromagnetically actuated tuning fork drive adapted for clockwork

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3917965A (en) * 1970-06-24 1975-11-04 Omega Brandt & Freres Sa Louis Transmission device for a horological mechanism
US3671825A (en) * 1970-08-07 1972-06-20 Armec Corp Timing motor with resonant members
US3690191A (en) * 1970-10-22 1972-09-12 Siemens Ag Device for converting a reciprocating motion into a stepwise rotary motion
US4559456A (en) * 1983-06-15 1985-12-17 Matsushita Electric Works, Ltd. Battery powered electric appliance
US4793199A (en) * 1985-12-19 1988-12-27 Messerschmitt-Bolkow-Blohm Gmbh Electromagnetic precision rotary drive
US5025428A (en) * 1990-12-17 1991-06-18 Wit Jarochowski Electromagnetic escapement for mechanically driven watch or clock
US20050256549A1 (en) * 2002-10-09 2005-11-17 Sirius Implantable Systems Ltd. Micro-generator implant
US20090171404A1 (en) * 2006-03-17 2009-07-02 Leland Standford Junior University Energy generating systems for implanted medical devices
US8556122B2 (en) * 2007-08-16 2013-10-15 S.C. Johnson & Son, Inc. Apparatus for control of a volatile material dispenser
US9061821B2 (en) 2007-08-16 2015-06-23 S.C. Johnson & Son, Inc. Apparatus for control of a volatile material dispenser
WO2015096979A2 (fr) 2013-12-23 2015-07-02 The Swatch Group Research And Development Ltd Echappement naturel
EP2891930A3 (de) * 2013-12-23 2016-07-13 The Swatch Group Research and Development Ltd. Vorrichtung zur Regulierung der Winkelgeschwindigkeit einer Triebfeder in einem Uhrwerk, das einen magnetischen Hemmungsmechanismus umfasst
CN104730907A (zh) * 2013-12-23 2015-06-24 斯沃奇集团研究和开发有限公司 调节装置
CN104730897A (zh) * 2013-12-23 2015-06-24 斯沃奇集团研究和开发有限公司 优化的擒纵机构
US20150177698A1 (en) * 2013-12-23 2015-06-25 The Swatch Group Research And Development Ltd Angular speed regulating device for a wheel set in a timepiece movement including a magnetic escapement mechanism
US20150177690A1 (en) * 2013-12-23 2015-06-25 The Swatch Group Research And Development Ltd. Optimized escapement
US20150177696A1 (en) * 2013-12-23 2015-06-25 The Swatch Group Research And Development Ltd Regulating device
US20150177697A1 (en) * 2013-12-23 2015-06-25 The Swatch Group Research And Development Ltd Angular speed regulating device for a wheel set in a timepiece movement including a magnetic escapement mechanism
EP2887157A1 (de) * 2013-12-23 2015-06-24 The Swatch Group Research and Development Ltd. Optimierte Uhrhemmung
EP2911015A2 (de) 2013-12-23 2015-08-26 The Swatch Group Research and Development Ltd. Natürliche Entlüftung
WO2015097172A3 (fr) * 2013-12-23 2016-01-07 The Swatch Group Research And Development Ltd Dispositif regulateur de la vitesse angulaire d'un mobile dans un mouvement horloger comprenant un echappement magnetique
US9292002B2 (en) * 2013-12-23 2016-03-22 The Swatch Group Research And Development Ltd. Optimized escapement
US9389591B2 (en) * 2013-12-23 2016-07-12 The Swatch Group Research And Development Ltd Regulating device
CN104730898A (zh) * 2013-12-23 2015-06-24 斯沃奇集团研究和开发有限公司 用于包括磁性擒纵机构的钟表机芯中的轮副的角速度调节装置
CN105849653A (zh) * 2013-12-23 2016-08-10 尼瓦洛克斯-法尔股份有限公司 磁性和/或静电谐振器
US9465366B2 (en) * 2013-12-23 2016-10-11 The Swatch Group Research And Development Ltd Angular speed regulating device for a wheel set in a timepiece movement including a magnetic escapement mechanism
CN106030422A (zh) * 2013-12-23 2016-10-12 斯沃奇集团研究和开发有限公司 用于调整包括磁性擒纵器的钟表机芯中的运动件的角频率的装置
US9483026B2 (en) * 2013-12-23 2016-11-01 The Swatch Group Research And Development Ltd. Angular speed regulating device for a wheel set in a timepiece movement including a magnetic escapement mechanism
JP2016540987A (ja) * 2013-12-23 2016-12-28 ウーテーアー・エス・アー・マニファクチュール・オロロジェール・スイス 計時器用同期機構
CN104730907B (zh) * 2013-12-23 2017-05-24 斯沃奇集团研究和开发有限公司 调节装置
CN104730897B (zh) * 2013-12-23 2017-06-30 斯沃奇集团研究和开发有限公司 优化的擒纵机构
US9715217B2 (en) 2013-12-23 2017-07-25 The Swatch Group Research And Development Ltd Device intended to control the angular speed of a train in a timepiece movement and including a magnetic escapement
CN104730898B (zh) * 2013-12-23 2017-11-17 斯沃奇集团研究和开发有限公司 用于包括磁性擒纵机构的钟表机芯中的轮副的角速度调节装置
CN105849653B (zh) * 2013-12-23 2017-11-24 尼瓦洛克斯-法尔股份有限公司 磁性和/或静电谐振器
US9927773B2 (en) 2013-12-23 2018-03-27 The Swatch Group Research And Development Ltd Natural escapement
RU2660530C2 (ru) * 2013-12-23 2018-07-06 Те Свотч Груп Рисерч Энд Дивелопмент Лтд Естественный спусковой механизм
CN106030422B (zh) * 2013-12-23 2018-10-16 斯沃奇集团研究和开发有限公司 用于调整包括磁性擒纵器的钟表机芯中的运动件的角频率的装置
RU2670236C2 (ru) * 2013-12-23 2018-10-19 Те Свотч Груп Рисерч Энд Дивелопмент Лтд Устройство регулирования угловой скорости колесного узла в часовом механизме, включающем магнитный спусковой механизм

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GB1197660A (en) 1970-07-08
DE1815728C3 (de) 1980-04-30
CH514170A (fr) 1971-11-30
DE1815728B2 (de) 1979-08-16
DE1815728A1 (de) 1969-07-17
CH1937068A4 (de) 1971-03-15

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