Patent ID: 8602637
Filing Date: 2013-12-10
Classification: G04B

Abstract:
1. An anti-trip device for an escape mechanism arranged to cooperate with a balance pivoting about a first pivot axis whose position is fixed relative to a plate, wherein said device includes a pivoting wheel set, pivotally moveable about a second pivot axis parallel to said first pivot axis and in a fixed position relative to said plate, said pivoting wheel set including guide means, said device also including a roller arranged to be secured to said balance and to pivot integrally therewith, said roller including complementary guide means arranged to cooperate with said guide means, and further wherein said guide means, or respectively said complementary guide means, includes a cam arranged to move said pivoting wheel set closer to said first pivot axis when said balance is pivoting in a first direction of pivoting, and to move said pivoting wheel set away from said first pivot axis when said balance is pivoting in a second direction of pivoting opposite to said first direction of pivoting, whereas said complementary guide means, or respectively said guide means includes a fixed finger arranged to cooperate with said cam.