Gravity Patents (Class 368/152)
  • 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: 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
  • Patent number: 7217030
    Abstract: An oscillating weight for an automatic watch is arranged to carry a bearing defining an axis of rotation (A—A) and is intended to be mounted on the frame of the watch. The mass member of the weight has a center of gravity (G) shifted with respect to the axis of rotation. In this weight, this mass member includes two parts that can be moved one (10, 18) in relation to the other (24), and arranged such that their relative movement causes a radial movement of the center of gravity (G) of the mass member. The mass member also has a securing device (13, 14, 16b) cooperating with the first and second parts, capable of occupying a first state in which the parts can be moved with reference to each other, and a second state in which the parts are rigidly secured to each other.
    Type: Grant
    Filed: February 4, 2004
    Date of Patent: May 15, 2007
    Assignee: Vaucher Manufacture Fleurier S.A.
    Inventor: Alberto Papi
  • Patent number: 6409379
    Abstract: A self-winding watch includes a self-winding mass having a central part surrounded by raceways of a ball bearing. One raceway is integral with the central part. Another raceway is integral with means for positioning and means for removably fastening to watch frame. A reduction gear train for connects the self-winding mass to a barrel arbor. A reversing mechanism converts the two-directional rotational movement of said self-winding mass into a one-directional rotational movement. Two first pinions of the reversing mechanism freely pivot, concentrically, with said central part. Each of the first pinions meshes with a planet pinion. The pivot pin is integral with the central part and the toothing is shaped so as to allow only unidirectional rotations of said first pinions in two opposed respective directions of rotation. The first pinions are integral with two second respective moving parts of the gear train, the directions of rotation of which are opposite, one with respect to the other.
    Type: Grant
    Filed: April 3, 2000
    Date of Patent: June 25, 2002
    Assignee: Montres Rolex S.A.
    Inventors: Jacques Gabathuler, Cédric Jacot, Christophe Lyner, David Nicolet
  • 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