With Overwind Prevention Patents (Class 368/209)
  • Patent number: 8579499
    Abstract: A device for winding watches, particularly manually-wound watches, comprising a containment structure which accommodates a motor, transmission means and a motor controller. The transmission means transfer the rotation of the motor, provided with power supply means, to a coupling which can be associated with the crown of the watch to be wound. The rotation is controlled by the controller. The device comprises a seat for stably accommodating the watch to be wound, the seat being defined on a surface of the containment structure.
    Type: Grant
    Filed: January 4, 2011
    Date of Patent: November 12, 2013
    Assignee: MCM Milano S.R.L.
    Inventors: Alberto Moroni, Mario Moroni, Fabrizio Ceraolo
  • Patent number: 6439762
    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: Grant
    Filed: January 31, 2001
    Date of Patent: August 27, 2002
    Assignee: Seiko Epson Corporation
    Inventors: Tatsuo Hara, Yoshihiko Momose
  • Patent number: 6422739
    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: Grant
    Filed: April 14, 1999
    Date of Patent: July 23, 2002
    Assignee: Seiko Epson Corporation
    Inventors: Tatsuo Hara, Yoshihiko Momose