Tourbillion

Details Tourbillion Tourbillion

2005-01-25

2005-01-25

Miska, Vit W. (Department: 2841)

Horology: time measuring systems or devices

Escapements

With oscillating or reciprocating means

C368S146000, C368S190000

Reexamination Certificate

active

06846104

ABSTRACT:
A tourbillon for a watch having a setting device for setting the hands of the watch includes a circular balance wheel that can swivel about a swivel axis. In addition, an escapement is provided that consists of a pallet and an escape wheel, the balance wheel and the escapement arranged on a base plate. A balance wheel shaft of the balance is rotationally mounted with its one end on the base plate and with its other end on a cage that surrounds the balance wheel like a basket. The cage comprises, outside of the radially encircling periphery of the balance wheel, a number of interspaced pillars fastened to the base plate and forms, with the base plate, a rotating mount which can be rotationally driven about rotation axis that is coaxial to the swivel axis by a seconds drive of the watch. A stop device can be actuated by the setting device and swiveling movement of the balance wheel can be blocked by the stop device. The stop device has an approximately V-shaped double-arm spring, which can be moved out of a normal position while being radially displaced outside of the encircling movement path of the pillars and into a blocking position in which it can rest in a flexible manner against the radially encircling contour of the balance wheel via contact areas and on both end areas of both of its spring arms that are oriented in and counter to the encircling direction of the contour of the balance wheel.

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patent: 0 727 721 (1996-08-01), None
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Das Tourbillon: Faszination der Drehung laute Bewunderung und viele leise Fragen, Uhren Komplikationen UJS DEc. 1992.

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