System of polishing external pieces for a timepiece
AssigneeComadur SA
InventorsJean-Paul Tassetti, Gilles Derriey, Patrice Dumont
Life of this patent
Estimating the term…
Abstract
A system of polishing a concave surface of an external piece for a timepiece, including a securing device including a support that carries the piece, and a grinding device including an abrasive mechanism rotatably mounted along a first axis and configured to polish the piece along a first curvature. The securing device further includes a moving mechanism of the support so that the support imparts a back-and-forth motion along a second axis and a contact surface of the abrasive mechanism is curved to polish the piece along a second curvature in addition to the first curvature. The system can be applied to the field of crystals for a timepiece.
Claims10
1-6. (canceled)
A system of polishing a concave surface of an external piece for a timepiece comprising:
- a securing device including a support that carries only the external piece;
- and
- a grinding device including an abrasive means formed by a disc rotatably mounted along a first axis to polish the external piece along a first curvature;
- wherein the securing device further includes moving means of the support so that the support imparts a back-and-forth motion along a second axis;
- and
- wherein a contact surface of the abrasive means formed on a peripheral wall of the disc is curved to polish the piece along a second curvature in addition to the first curvature.
Dependencies are inferred from the claim text.