Stop pawl for horological movement
AssigneeETA SA Manufacture Horlogere Suisse
InventorJulien Christan
Life of this patent
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Abstract
A stop pawl for a horological movement, including a body provided on the periphery with a lug for latching with the toothing of a ratchet; a hub intended to cooperate freely in rotation with a fixed rod according to an angular displacement between an active position meshing the lug with the toothing of the ratchet and an inactive position, via intermediate positions; wherein the pawl includes at least one device for returning the pawl during its angular displacement, from the inactive position to the active position; and wherein the return device and the body are made in one piece. A horological movement and timepiece can include such a pawl.
Claims13
A stop pawl for a horological movement, comprising:
- a body provided with a lug for latching with the toothing of a ratchet, and a hub configured to cooperate freely in rotation with a fixed rod according to an angular displacement between an active position meshing said lug with the toothing of said ratchet and an inactive position, via intermediate positions;
- and
- one means for returning said stop pawl during its angular displacement, from the inactive position to the active position,
- wherein:
- said return means and said body are made in one piece,
- said return means comprises at least one elastic blade with one end integral with said body and a free opposite end,
- the body includes a groove extending between an inner face of said elastic blade and said body from the end integral with said body and to the free end of said elastic blade,
- the free end of said elastic blade includes an overhang protruding on the inner face,
- said groove includes, facing the overhang, a notch for receiving said overhang,
- the lug is located on an outer peripheral surface of the body at a position spaced apart from the at least one elastic blade.
Dependencies are inferred from the claim text.