Pallet lever mechanism for timepiece escapement
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United States of America Patent
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Apr 12, 2016
Grant Date -
Aug 6, 2015
app pub date -
Nov 6, 2013
filing date -
Nov 9, 2012
priority date (Note) -
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Abstract
A pallet lever mechanism for an escapement mechanism including a structure carrying a balance and an escape wheel, the pallet lever including pallet stones cooperating with the escape wheel, and a flexible, multistable element, and the pallet lever cooperates with the balance with horns of a first portion of the pallet lever connected by one such flexible element to the structure or to a second portion of the pallet lever carrying the pallet stones connected by one such flexible element to the fixed structure or to the first portion. One flexible element includes a prestressed beam buckled in an S or Z shape, the pallet lever mechanism including a pivot forcing the beam to have a node at the middle thereof.
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