Timepiece balance spring stud-holder with no screws
AssigneeETA SA Manufacture Horlogere Suisse
InventorRaphael Courvoisier
Life of this patent
Estimating the term…
Abstract
An assembly for holding or supporting a timepiece balance spring includes a balance spring stud and a stud-holder. The stud-holder includes a device to secure the stud-holder to an escapement mechanism. The balance spring stud includes a lateral bearing surface defining a direction of holding or supporting the balance spring. The stud-holder is in two parts, and includes a rigid structure carrying the securing device, and a strip spring pressed against this rigid structure and including at least one elastic lip defining, with this structure, a chamber for receiving this stud and cooperating with this lateral bearing surface of this stud to hold this stud in an indexed locking position.
Claims20
An assembly for holding or supporting a timepiece balance spring, comprising:
- a balance spring stud and a stud-holder, said balance spring stud being a separate part from the stud-holder, said stud-holder includes means of securing said stud-holder to an escapement mechanism, said balance spring stud including at least one lateral bearing surface defining a direction of holding or supporting a said balance spring,
- wherein said stud-holder is only two separate parts, and includes a rigid structure carrying said securing means, and a strip spring pressed against said rigid structure and including at least one elastic lip defining, with said structure, a chamber for receiving said stud and cooperating with said at least one lateral bearing surface of said stud to hold said stud in an indexed locking position.
An assembly for holding or supporting a timepiece balance spring, comprising:
- a balance spring stud and a stud-holder, said stud-holder includes means of securing said stud-holder to an escapement mechanism, said balance spring stud including at least one lateral bearing surface defining a direction of holding or supporting a said balance spring,
- wherein said stud-holder is in two parts, and includes a rigid structure carrying said securing means, and a strip spring pressed against said rigid structure and including at least one elastic lip defining, with said structure, a chamber for receiving said stud and cooperating with said at least one lateral bearing surface of said stud to hold said stud in an indexed locking position, and
- wherein said rigid structure and/or said strip spring includes an insertion ramp for the tangential insertion of said balance spring stud between said rigid structure and said strip spring and the insertion thereof into said chamber against the elastic return force of said strip spring.
Dependencies are inferred from the claim text.