Display mechanism for watches
AssigneeETA SA Manufacture Horlogere Suisse
InventorsRaphael Balmer, Pascal Lagorgette
Life of this patent
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Abstract
Timepiece display mechanism comprising a centre pipe fixed on a plate, this centre pipe comprising a main bore or a main guide bearing surface for receiving and guiding in rotation, about a main axis, a display wheel set internal or external to the centre pipe, and this display mechanism comprises an axial stop arranged to limit to a predetermined value the axial play in the direction of the main axis between the centre pipe and the display wheel set, and which is an added axial stop which is either captively mounted between the centre tube and the display wheel set, or fixed to the display wheel set.
Claims7
A timepiece display mechanism comprising a centre pipe fixed on a plate, said centre pipe comprising at least one main bore or one main guide bearing surface for receiving and guiding in rotation, about a main axis, a display wheel set internal or external to said centre pipe, wherein said display mechanism comprises at least one axial stop arranged to limit to a predetermined value axial play in a direction of said main axis between said centre pipe and said display wheel set, and wherein said at least one axial stop is either a protruding surface of said centre pipe or of said display wheel set, or an added axial stop, which is either captively mounted between said centre pipe and said display wheel set, or fixed to said display wheel set, wherein said axial stop is the added axial stop comprising a retaining ring, housed both inside an outer groove comprised in said centre pipe and inside an inner groove comprised in said wheel set.
Dependencies are inferred from the claim text.