Method and device for assembling a movement to a watch case
AssigneeETA SA Manufacturing Horlogere Suisse
InventorsThierry Altenhoven, Andre Kaltenrieder, Stephane Leoni
Life of this patent
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Abstract
A device for attachment of a timepiece movement to a watch case, including a peripheral attachment element of the movement positioned in abutment on an axial bearing surface of the case. The device includes thermoformed studs integral with the case having a mushroom shape at an end thereof providing an axial retaining surface acting as a rivet to hold the peripheral attachment element of the movement against the axial bearing surface of the case.
Claims10
A method for attaching a timepiece movement to a watch case, the method comprising:
- mounting a peripheral attachment element integral with the movement to abuttingly engage on an axial bearing surface of the case, the peripheral attachment element projecting in a peripherally outward manner relative to the movement and including orifices;
- inserting studs integral with the case into the orifices;
- and
- thermoforming the studs to locally deform an end of each stud to form a rivet including an axial retaining surface that vertically retains the peripheral attachment element of the movement against the axial bearing surface of the case.
A device for attachment of a timepiece movement to a watch case, the device comprising:
- a peripheral attachment element integral with the movement, the peripheral attachment element projecting in a peripherally outward manner relative to the movement and including orifices;
- and
- studs being integral with the case and be inserted into the orifices,
- wherein the studs are thermoformed to form a mushroom-shaped end having an axial retaining surface acting as a rivet to hold the peripheral attachment element of the movement against the axial bearing surface of the case.
A device for attachment of a timepiece movement to a watch case, the device comprising:
- a peripheral attachment element of the movement positioned in abutment on an axial bearing surface of the case and including through holes;
- thermoformable studs integral with the case, the studs being thermoformed after being inserted in the through holes, and the thermoformed studs including a mushroom-shaped end including an axial retaining surface acting as a rivet to hold the peripheral attachment element of the movement against the axial bearing surface of the case;
- and
- a retaining ring, the movement further including a shoulder, the axial retaining surface of the studs pressing the retaining ring against an upper surface of the shoulder.
Dependencies are inferred from the claim text.