Horology: time measuring systems or devices – Escapements – With oscillating or reciprocating means
Reexamination Certificate
2006-09-29
2008-12-02
Miska, Vit W (Department: 2833)
Horology: time measuring systems or devices
Escapements
With oscillating or reciprocating means
C368S129000
Reexamination Certificate
active
07458717
ABSTRACT:
An escapement for a timepiece movement includes a toothed escape wheel, a balance and a detent respectively pivoted on rotation axes. The detent supports a pallet lock that interacts with the first tooth of the escape wheel along a certain length of penetration in order to block it in an idle phase during which the balance executes a free arc of oscillation. An impulse pallet rotationally driven by the balance interacts with a second tooth when the detent is pivoted in order to release the escape wheel, this wheel turning by a forward pitch before being blocked again by the pallet lock by interaction with the second tooth. The escapement also includes a limiting plate, which is coaxial and rotationally secured to the balance, has a periphery including a substantially circular main portion and a cutout positioned facing the pallet lock in the release phase.
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patent: 3299 (1891-03-01), None
Baumberger Peter
Mojon Jean-François
Baumberger Peter
Miska Vit W
Young & Thompson
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