Inertia Patents (Class 368/208)
  • Patent number: 9557712
    Abstract: The oscillating weight includes a drive ring and a heavy sector. The drive ring includes an annular transmission portion which has a coaxial toothing and a second annular portion concentric to the annular transmission portion, the heavy sector being fixed to the second annular portion. The drive ring further includes a plurality of connecting elements which are elastically deformable and which connect the annular transmission portion to the second annular portion.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: January 31, 2017
    Assignee: Blancpain S.A.
    Inventors: Marco Rochat, Samuel Cordier
  • Patent number: 9400488
    Abstract: An automatic winding device for a spring of a watch movement including a weight fixed on a support via a bearing including a ring which drives, in only one direction of rotation called the winding direction, a transmission gear in order to wind the mainspring, this winding device wherein, on the one hand, the bearing is of the one-way type and blocks the rotation of the weight in the opposite direction to the winding direction, called the blocking direction and wherein, on the other hand, the device includes a means for decoupling the weight from said bearing in at least the blocking direction when the weight exerts on the bearing a torque higher than a desired value.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: July 26, 2016
    Assignee: Montres Breguet S.A.
    Inventors: Sylvain Marechal, Benoit Junod
  • Patent number: 9146536
    Abstract: The oscillating mass able to be fixed to a frame (1) pivoted on the exterior of a timepiece movement has toothing kinematically connected to the ratchet of a barrel of the timepiece movement. This oscillating mass has, on the one hand, a mount (4) which is annular or is in the form of an annular sector and is able to be fixed to the frame (1) and, on the other hand, a central part (7) located mainly or exclusively in one half of the surface delimited by the mount (4).
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: September 29, 2015
    Assignee: CARTIER CREATION STUDIO SA
    Inventors: Carole Kasapi, Laurent Dechaumont
  • Publication number: 20150117164
    Abstract: The patent application relates to an automatic winding device used for automatic winding watch, which comprises a box body, a rotating seat arranged on the box body and relatively rotatable to the box body, a holding seat fixed on the rotating seat and used for placing the automatic winding watch, a driving mechanism driving the rotating seat to rotate, and a control device controlling the rotating mode of the driving mechanism, wherein the driving mechanism is arranged in the box body. The automatic winding device used for automatic winding watch can be rotatably arranged on the box body through the rotating seat; compared with the existing rotation in a rotating cavity, the patent application reduces the noise, and is beneficial for displaying the watch; the watch is sheathed on the holding seat and then placed on the rotating seat.
    Type: Application
    Filed: October 20, 2014
    Publication date: April 30, 2015
    Inventor: Ming Sang Ng
  • Patent number: 9004749
    Abstract: The oscillating weight for a self-winding watch mechanism is made by molding a plastic material charged with heavy metal particles. Moreover, the plastic material is also charged with fibers, wherein said fibers form between 1.5% and 7% of the total weight of the charged plastic material, and the density of the charged plastic material is greater than 8.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: April 14, 2015
    Assignee: Eta sa Manufacture Horlogère Suisse
    Inventors: Christian Poffet, Xavier Tinguely, Andrés Cabezas Jurin
  • Patent number: 8882340
    Abstract: The oscillating weight is intended to be used in a self winding watch mechanism. It includes a basic part (1) made of composite material and heavy metal elements (9). The basic part includes an inner portion (5) and a peripheral portion (3), with the peripheral portion including housings in which the heavy metal elements are set.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: November 11, 2014
    Assignee: ETA SA Manufacture Horlogere Suisse
    Inventors: Laurent Kaelin, Xavier Tinguely
  • Patent number: 8801269
    Abstract: Device (100) for displaying a magnitude on an oscillating weight (1) for a self-winding timepiece movement (10) comprising a means (20) of displaying said magnitude by comparison to a complementary display means (30). Said display means (20) pivots coaxially to said oscillating weight (1), and is subject to a general pivoting motion resulting from the combination of a first pivoting motion synchronous with that of said oscillating weight (1), and a second pivoting motion resulting from said display means (20) being pivoted by said movement (10) relative to said complementary display means (30) integral with said oscillating weight (1). Oscillating weight (1) including such a device (100). Self-winding watch including an oscillating weight (1) comprising such a device (100), and whose motions are transmitted to a mainspring of said watch.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: August 12, 2014
    Assignee: Blancpain S.A.
    Inventors: Bernhard Grossenbacher, Nicolas Debaud
  • Publication number: 20140153372
    Abstract: The oscillating mass able to be fixed to a frame (1) pivoted on the exterior of a timepiece movement has toothing kinematically connected to the ratchet of a barrel of the timepiece movement. This oscillating mass has, on the one hand, a mount (4) which is annular or is in the form of an annular sector and is able to be fixed to the frame (1) and, on the other hand, a central part (7) located mainly or exclusively in one half of the surface delimited by the mount (4).
    Type: Application
    Filed: July 12, 2012
    Publication date: June 5, 2014
    Applicant: Cartier Creation Studio SA
    Inventors: Carole Kasapi, Laurent Dechaumont
  • Patent number: 8550701
    Abstract: A mechanical watch comprises a motive spring in a first spring barrel and a mechanical and/or automatic winding device. A second spring barrel and a differential having three drive trains are provided, wherein the train connected to the winding device acts on the first and second spring barrels in the same direction.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: October 8, 2013
    Assignee: Eterna AG Uhrenfabrik
    Inventors: Patrick Kury, Stephan Kussmaul
  • Patent number: 8506157
    Abstract: A vertical type uncoupling device, in particular in an automatic watch winding mechanism that includes an oscillating mass and a gear train connecting the oscillating mass to a barrel (9), wherein a gear train includes a direction reverser device (11, 12), a reduction gear (13, 14, 15, 16) and the uncoupling device (20). The uncoupling device includes two coaxial wheels (17, 7) that can be coupled in rotation in one direction owing to respective Breguet toothings (21, 22) arranged on the opposite flanks of the wheels. The coaxial wheel (17), which is mobile in the axial direction, is secured to a sliding arbour (18), which is mounted so as to rotate and slide in fixed bearings (24, 25). A return spring (26) includes an elastic strip that abuts against one end of the sliding arbour (18) to tend to engage and keep meshed the Breguet toothings. This design reduces friction and saves space. Other applications of this type of uncoupling device in a watch movement are described.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: August 13, 2013
    Assignee: Monet Jaquet Droz S A
    Inventors: Raphaël Courvoisier, Alphonse Bron
  • Publication number: 20130114381
    Abstract: The oscillating weight is intended to be used in a self winding watch mechanism. It includes a basic part (1) made of composite material and heavy metal elements (9). The basic part includes an inner portion (5) and a peripheral portion (3), with the peripheral portion including housings in which the heavy metal elements are set.
    Type: Application
    Filed: November 5, 2012
    Publication date: May 9, 2013
    Applicant: ETA SA Manufacture Horlogere Suisse
    Inventor: ETA SA Manufacture Horlogere Suisse
  • Patent number: 8342740
    Abstract: The invention concerns an oscillating weight (1) for an automatic winding watch, including a power reserve indicator device (100) integrated in said oscillating weight (1) and including means (20) for displaying the power reserve by comparison to complementary display means (30), said display means (20) and complementary display means (30) being integrated in said oscillating weight (1). Said display means (20) and complementary display means (30) are movably mounted to rotate synchronously, at a given moment, relative to said oscillating weight (1). The invention also concerns an automatic winding watch including an oscillating weight (1) of this type, whose movements are transmitted to a mainspring of said watch.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: January 1, 2013
    Assignee: Blancpain S.A.
    Inventors: Vincent Beccia, Vincent Calabrese, Sébastien Graf
  • Patent number: 8305848
    Abstract: A timepiece movement comprising a coupling mechanism including first and second coupling wheel sets, whereby the rotation of the first coupling wheel set causes the second coupling wheel set to rotate, whereby the coupling mechanism is a centrifugal coupling mechanism including an inertial click secured to the hub of the first coupling wheel set, and meshing with stop members secured to the second coupling wheel set.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: November 6, 2012
    Assignee: The Swatch Group Research and Development Ltd
    Inventors: Jean-Jacques Born, Cédric Nicolas
  • Publication number: 20120243387
    Abstract: Oscillating weight for automatic watch movement, having a massive peripheral ring in the shape of an arc of circle, a connecting element connecting the peripheral ring to the weight's pivoting center, wherein the connecting element is set with a plurality of stones.
    Type: Application
    Filed: January 6, 2012
    Publication date: September 27, 2012
    Applicant: CHRISTIAN DIOR COUTURE SA
    Inventors: Mathieu JAMIN, Mathieu FERRAND, Etienne LEBRETON
  • Publication number: 20120195173
    Abstract: The oscillating weight for a self-winding watch mechanism is made by moulding a plastic material charged with heavy metal particles. Moreover, the plastic material is also charged with fibres, wherein said fibres form between 1.5% and 7% of the total weight of the charged plastic material, and the density of the charged plastic material is greater than 8.
    Type: Application
    Filed: January 19, 2012
    Publication date: August 2, 2012
    Applicant: ETA SA MANUFACTURE HORLOGÈRE SUISSE
    Inventors: Christian POFFET, Xavier TINGUELY, Andrés CABEZAS JURIN
  • Publication number: 20110205857
    Abstract: The invention concerns an oscillating weight (1) for an automatic winding watch, including a power reserve indicator device (100) integrated in said oscillating weight (1) and including means (20) for displaying the power reserve by comparison to complementary display means (30), said display means (20) and complementary display means (30) being integrated in said oscillating weight (1). Said display means (20) and complementary display means (30) are movably mounted to rotate synchronously, at a given moment, relative to said oscillating weight (1). The invention also concerns an automatic winding watch including an oscillating weight (1) of this type, whose movements are transmitted to a mainspring of said watch.
    Type: Application
    Filed: February 16, 2011
    Publication date: August 25, 2011
    Applicant: BLANCPAIN S.A.
    Inventors: Vincent Beccia, Vincent Calabrese, Sébastien Graf
  • Publication number: 20110149697
    Abstract: Timepiece movement 1 including an energy source 36 coupled to an oscillating weight 2 by a first kinematic chain 3 for automatically winding the movement 1, the timepiece movement 1 being characterized in that the energy source 36 is also coupled to an actuation device 41 and a vibrating element 42 via a second kinematic chain 4 to form a vibrating alarm mechanism that can be released at a predetermined time.
    Type: Application
    Filed: December 21, 2010
    Publication date: June 23, 2011
    Applicant: THE SWATCH GROUP RESEARCH AND DEVELOPMENT LTD
    Inventors: Jean-Jacques Born, Cédric Nicolas
  • Patent number: 7946756
    Abstract: The oscillating weight (2) is for automatically winding a timepiece movement; it pivots off-center relative to the center of the movement and is made of a single heavy material. The weight (2) is carried by a shock absorber (1) that takes the form of a plate (4), one end of which is secured to the weight and the other end of which is secured to a tube (5) arranged to rotate about an arbour (6) forming the axis of rotation of the weight.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: May 24, 2011
    Assignee: Montres Jaquet Droz SA
    Inventors: Raphaël Courvoisier, Alphonse Bron
  • Patent number: 7896542
    Abstract: The invention concerns a timepiece movement that includes first and second energy sources, wherein the first energy source is coupled to an oscillating weight by a first kinematic chain for automatically winding the movement, and the second energy source is coupled both to an activating device, and to a vibrating element by a second kinematic chain, to form a vibrating alarm mechanism that can be activated at a predetermined time. In addition, for the timepiece movement, the vibrating element of the vibrating alarm mechanism is the oscillating weight.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: March 1, 2011
    Assignee: The Swatch Group Research and Development Ltd
    Inventors: Jean-Jacques Born, Cédric Nicolas
  • Patent number: 7857502
    Abstract: The present invention relates to a self-winding watch including an oscillating mass (8), the movements of which are transmitted to a spring barrel of the watch, this watch likewise including a device for indicating the power reserve comprising means (2) for displaying the power reserve, characterised in that the means (2) for displaying the power reserve are mounted on the oscillating mass (8).
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: December 28, 2010
    Assignee: Blancpain S.A.
    Inventor: Marco Rochat
  • Patent number: 7837381
    Abstract: Automatic mechanical winding device for the driving spring of a mechanical clockwork of a wristwatch with an eccentric mass that can be swiveled on a joint, said mass having a center of mass that is radially offset from the axis of the joint, with gear means for converting the swivel or rotary motion of the eccentric mass into a motion that winds the driving spring.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: November 23, 2010
    Inventor: Konrad Damasko
  • Publication number: 20100278018
    Abstract: A timepiece has a basic movement including at least one barrel (12) and a set of hands (14) for displaying the time now, the set of hands being situated at a first level, a mechanism for a supplementary function connected to at least one hand (18a) for displaying the supplementary function, the hand being situated at a second level and on a different axis from the set of hands (14), and an automatic winding mechanism for the barrel (12), including an oscillating mass (24) consisting of a carrier (24a) and a heavy sector (24b) situated at the periphery of the carrier. The carrier (24a) pivots in a plane situated between the first and second levels.
    Type: Application
    Filed: October 24, 2008
    Publication date: November 4, 2010
    Inventor: Frederic Jouvenot
  • Publication number: 20100254229
    Abstract: A mechanical watch comprises a motive spring in a first spring barrel and a mechanical and/or automatic winding device. A second spring barrel and a differential having three drive trains are provided, wherein the train connected to the winding device acts on the first and second spring barrels in the same direction.
    Type: Application
    Filed: October 22, 2008
    Publication date: October 7, 2010
    Applicant: ETERNA AG UHRENFABRIK
    Inventors: Patrick Kury, Stephan Kussmaul
  • Publication number: 20100226216
    Abstract: The invention concerns a vertical type uncoupling device, in particular in an automatic watch winding mechanism that includes an oscillating mass and a gear train connecting the oscillating mass to a barrel (9), wherein said gear train includes a direction reverser device (11, 12), a reduction gear (13, 14, 15, 16) and the uncoupling device (20). The uncoupling device includes two coaxial wheels (17, 7) that can be coupled in rotation in one direction owing to respective Breguet toothings (21, 22) arranged on the opposite flanks of said wheels. The coaxial wheel (17), which is mobile in the axial direction, is secured to a sliding arbour (18), which is mounted so as to rotate and slide in fixed bearings (24, 25). A return spring (26) includes an elastic strip that abuts against one end of the sliding arbour (18) to tend to engage and keep meshed the Breguet toothings. This design reduces friction and saves space. Other applications of this type of uncoupling device in a watch movement are described.
    Type: Application
    Filed: March 2, 2010
    Publication date: September 9, 2010
    Applicant: Montres Jaquet Droz S A
    Inventors: Raphaël COURVOISIER, Alphonse BRON
  • Publication number: 20100128573
    Abstract: Mechanical clockwork assembly, comprising a drive mechanism, a mechanical control device comprising a mechanical oscillator and a first transmission device for providing a transmission between the drive mechanism and the mechanical oscillator, an electric generator and a second transmission device for providing a transmission between the drive mechanism and the generator, wherein the generator is spaced apart from the mechanical oscillator. In one embodiment the clockwork assembly comprises a sensor for determining a timing of the mechanical oscillator, an actuator for adapting a timing of the mechanical oscillator, an electronic control device connected to the sensor and the actuator, wherein the control device comprises an entry for a reference signal for controlling the timing of the mechanical oscillator on the basis of the reference signal, and wherein at least the control device is connected to the generator for supplying the control device with electric energy from the generator.
    Type: Application
    Filed: July 5, 2007
    Publication date: May 27, 2010
    Inventors: Bernardus Johannes Meijer, Petrus Matheus Josephus Knapen
  • Publication number: 20090257322
    Abstract: The oscillating weight (2) is for automatically winding a timepiece movement; it pivots off-centre relative to the centre of the movement and is made of a single heavy material. The weight (2) is carried by a shock absorber (1) that takes the form of a plate (4), one end of which is secured to the weight and the other end of which is secured to a tube (5) arranged to rotate about an arbour (6) forming the axis of rotation of the weight.
    Type: Application
    Filed: April 15, 2009
    Publication date: October 15, 2009
    Applicant: Montres Jacquet-Droz S.A.
    Inventors: Raphael Courvoisier, Alphonse Bron
  • Patent number: 7547136
    Abstract: The oscillating weight includes a primary oscillating weight (10) secured to a drive arbor (6) and at least one secondary oscillating weight (20), which is mobile relative to the primary weight to cause the initial impulse. The secondary weight (20) is formed by a part assembled to the primary weight (10) from the exterior, while being able to have a travel between two stop members (12a, 12b) of a guide means (14, 18) located on the periphery of the primary weight (10).
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: June 16, 2009
    Assignee: The Swatch Group Management Services AG
    Inventors: Paulo Bravo, Nicolas Ehrsam
  • Publication number: 20090129211
    Abstract: The present invention relates to a self-winding watch including an oscillating mass (8), the movements of which are transmitted to a spring barrel of the watch, this watch likewise including a device for indicating the power reserve comprising means (2) for displaying the power reserve, characterised in that the means (2) for displaying the power reserve are mounted on the oscillating mass (8).
    Type: Application
    Filed: February 7, 2007
    Publication date: May 21, 2009
    Inventor: Marco Rochat
  • Patent number: 7520664
    Abstract: A timepiece apparatus (10) comprising: a rotatable shaft (30) operatively connected to a magnet (40); a magnetic detection device (50) to detect a magnetic field of the magnet (40) when proximal to the magnetic detection device (50); wherein if a predetermined sequence of magnetic fields is detected by the magnetic detection device (50), a predetermined operation is performed.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: April 21, 2009
    Assignee: National Electronics & Watch Co. Ltd.
    Inventor: Kwong Yuen Wai
  • Publication number: 20080304371
    Abstract: Automatic mechanical winding device for the driving spring of a mechanical clockwork of a wristwatch with an eccentric mass that can be swiveled on a joint, said mass having a center of mass that is radially offset from the axis of the joint, with gear means for converting the swivel or rotary motion of the eccentric mass into a motion that winds the driving spring.
    Type: Application
    Filed: May 30, 2008
    Publication date: December 11, 2008
    Inventor: Konrad Damasko
  • Patent number: 7347618
    Abstract: An automatic pawl winding mechanism for a watch movement has a rotor solidly attached to a rotor wheel and oscillating about the axis of a rotor pivot, a pawl wheel to which an oscillating motion of rotor is transmitted by the rotor wheel being pivoted about the axis of a pawl wheel shaft, at least one pawl being eccentrically attached to the pawl wheel shaft, and an automatic wheel cooperating with the pawl or pawls. The oscillating motion of the rotor wheel is thus transformed into a unidirectional rotary motion of the automatic wheel, and this rotary motion is transmitted to a ratchet wheel via a transformation gear train. The rotor, the gear train from the rotor with rotor wheel to the pawl wheel with the pawl or pawls is mounted on an independent rotor bridge while no other organ of the mechanism is mounted on this bridge.
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: March 25, 2008
    Assignee: Richemont International S.A.
    Inventors: Jean-François Mojon, Norberto Perucchi
  • Patent number: 6485172
    Abstract: A movement 100 of a self-winding watch has a main plate 102, a train wheel bridge 104, a center wheel bridge 106, a third wheel bridge 107 and a transmission bridge 108. An oscillating weight 160 is rotatably attached to a third bridge 107. A first transmission intermediate gear 178a is structured to mesh with a first transmission gear 180a and oscillation weight pinion 176. An eccentric shaft-part 180d is provided on the first transmission wheel 180. A pawl lever 182 is assembled between the third wheel bridge 107 and the center wheel bridge 106. The pawl lever 182 has a guide hole 182a rotatably assembled on the eccentric shaft part 180d. The eccentric motion of pawl lever 182 winds up a spiral spring.
    Type: Grant
    Filed: August 29, 2000
    Date of Patent: November 26, 2002
    Assignee: Seiko Instruments Inc.
    Inventors: Masaaki Takahashi, Takeshi Tokoro
  • Patent number: 6441516
    Abstract: The device includes a barrel (2) inserted in the kinematic chain between the rotor (11) of the generator (1) and the oscillating weight (3). The barrel includes a spiral coiled spring (4) and a sliding strip (6), wound in the same direction as the spiral coiled spring over the length of a turn, without any mechanical connection with the spring, but forming a protective envelope in the open position in case of shock. The shockproof device can be applied to the generator of a wristwatch.
    Type: Grant
    Filed: September 14, 2000
    Date of Patent: August 27, 2002
    Assignee: Eta Sa Fabriques D'ebauches
    Inventors: Laurent Kaelin, Jean-Philippe Rebeaud
  • Publication number: 20010005339
    Abstract: A timepiece, whose hands move by mechanical energy of a mainspring transmitted through a wheel train, includes a winding-up portion for accumulating energy in the mainspring, an addition and subtraction wheel train driven by addition and subtraction of accumulated energy corresponding to an amount by which the mainspring is wound up and unwound, respectively, an addition and subtraction wheel, disposed in the addition and subtraction wheel train, that rotates in correspondence with an amount by which the mainspring is wound up and unwound, and a lock mechanism actuated in response to the rotation of the addition and subtraction wheel to limit winding up and unwinding of the mainspring to a selected range of windings of the mainspring. This controls the torque output by the mainspring to a fixed range. The addition and subtraction wheel train allows efficient use of space, and can be incorporated in a watch.
    Type: Application
    Filed: January 31, 2001
    Publication date: June 28, 2001
    Inventors: Tatsuo Hara, Yoshihiko Momose
  • Patent number: 6023446
    Abstract: A timepiece comprising a generator (1) for generating a supply voltage of a first predetermined value U.sub.1, a barrel with a spring (5, 6), a winding mechanism (5') and a set of hands (7 to 9). The electronic circuit (11, 12) of the timepiece requires a minimum limited supply voltage having a second predetermined value U.sub.2. This circuit comprises a timebase (12) and a regulating circuit (11) for regulating the rotational speed of the generator. According to the invention, a voltage regulator (25) is connected between the generator and said electronic circuit for adjusting its output voltage to said limited second value U.sub.2. The ratio between the absolute value U.sub.1 of the predetermined first value U.sub.1 and the second predetermined value satisfies the relationship U.sub.1 =k.multidot.U.sub.2, k being a factor corresponding at least to the maximum expected variation rate of the absolute value U.sub.1 when the timepiece is worn.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: February 8, 2000
    Assignee: Asulab S.A.
    Inventors: Pierre-Andre Farine, Jean-Jacques Born
  • Patent number: 6021098
    Abstract: A device for limiting the acceleration which an oscillating weight (1) used to drive or wind a power generator powering an instrument of small volume, can undergo, includes a bearing raceway (2) against which such weight abuts when it undergoes an acceleration substantially exceeding that occurring in normal use of the instrument. For this purpose, the weight (1) is elastically mounted on a moving support member (4) so as to move in the plane of such weight which is then braked by the bearing raceway (2) when the weight undergoes an acceleration which exceeds a certain maximum value.
    Type: Grant
    Filed: November 6, 1998
    Date of Patent: February 1, 2000
    Assignee: Eta Sa Fabriques D'Ebauches
    Inventor: Jean-Philippe Rebeaud
  • Patent number: 5867454
    Abstract: An automatic watch, a complete barrel 30 is disposed on the side opposite from the dial of a main plate 22, i.e. on the front side, and has the center of rotation thereof within a first domain 310 or a fourth domain 340 of the main plate 22. An escape wheel & pinion 50, a pallet fork 60 and a balance 70 have their center of rotation within a third domain 330 or a fourth domain 340, respectively. A setting lever 120 and a yoke 130 are disposed on the front side of the main plate 22 and have their center of oscillation within the second domain 320, respectively. A yoke holder 140 holds a part of the setting lever 120 and a part of the yoke 130, respectively.
    Type: Grant
    Filed: August 19, 1997
    Date of Patent: February 2, 1999
    Assignee: Seiko Instruments Inc.
    Inventors: Masaaki Takahashi, Mitsuru Ishii
  • Patent number: 4809250
    Abstract: In this reverser mechanism the winding wheel is assembled on a common axis with two ratchet wheels each assigned to one of the pivoting direction of the oscillating mass.The winding wheel is pierced by rivets which bear respectively a pawl and a spring. The spring which is thus mounted on a pivot means of a pawl cooperating with one of the ratchet wheels loads the pawl which cooperates with the other ratchet wheel.The mechanism is for use with timepieces having automatic winding of the mainspring.
    Type: Grant
    Filed: January 29, 1988
    Date of Patent: February 28, 1989
    Assignee: Fabrique Ebel, Societe Anonyme
    Inventor: Willy Meier
  • Patent number: 4500213
    Abstract: The watch has a winding weight comprising an arm 10a and an oscillating mass 10b. The arm is mounted for pivotal movement about the axis of a toothed ring 12 by way of which the spring barrel 20 is kept wound and which axis is offset with respect to the watch hand axis X, X'. The oscillating mass 10a is at the same level relative to the case back 6 as the spring barrel 20. The length L' of the winding weight is greater than the offset L and more than half the largest dimension of the case 6. The oscillating mass 10b thus occupies substantially half the casing of the watch and is almost as thick as the distance between the glass and the back 6 which is also the rear plate of the movement.
    Type: Grant
    Filed: October 19, 1981
    Date of Patent: February 19, 1985
    Assignee: Ebauches, S.A.
    Inventor: Maurice Grimm
  • Patent number: 4213293
    Abstract: A receiving unit for timepieces, especially an improved receiving unit for a self-winding mechanism of self-winding timepieces. The receiving unit comprises guide portions and springs which are formed together as a unitary structure using resin.
    Type: Grant
    Filed: October 10, 1978
    Date of Patent: July 22, 1980
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Hiroshi Mabuchi, Isao Yabe