Movement for timepiece with retrograde display

Details Movement for timepiece with retrograde display Movement for timepiece with retrograde display

2011-07-05

2011-07-05

Miska, Vit W (Department: 2833)

Horology: time measuring systems or devices

Chronological

With mechanical or electromechanical driven display

C368S220000, C368S228000

Reexamination Certificate

active

07974156

ABSTRACT:
A movement for a timepiece having a retrograde display member displaying at least one time division, includes a going train, elements for driving the display member including a wheel unit driven by the going train and carrying a first cam sharing the same axis of rotation. The movement also includes a rocker supporting a probe held against the edge of the first cam by deformable elastic elements undergoing a deformation of variable amplitude. This results in the application of a corresponding force on the rocker in proportion to the distance between the probe and the axis of rotation of the first cam. The movement also includes drive members to connect the rocker to a retrograde display member. A force-regulating device is interposed between the elastic elements and the rocker.

REFERENCES:
patent: 3696609 (1972-10-01), Dubois
patent: 5043955 (1991-08-01), Dubois et al.
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patent: 6327226 (2001-12-01), Russi
patent: 2005/0162982 (2005-07-01), Suzuki
patent: 2006/0126436 (2006-06-01), Watanabe et al.
patent: 2008/0159082 (2008-07-01), Hiraga et al.
patent: 691 833 (2001-10-01), None
patent: 694 349 (2004-11-01), None
patent: 743 618 (1933-04-01), None

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