Device for holding a wheel set

Patent metadata

Field	Value
Publication number	US-10120339-B2
Application number	US-201715397956-A
Country	US
Kind code	B2
Filing date	Jan 4, 2017
Priority date	Apr 25, 2016
Publication date	Nov 6, 2018
Grant date	Nov 6, 2018

Abstract

A device for holding a wheel set of a timepiece movement mounted on a main plate includes a lever, intended to be mounted to slide on the main plate of the timepiece movement between a first and a second position and arranged to move in translation between the two positions. The lever includes, at a first end, a locking beak cooperating with a slot of a ring attached to the wheel set to hold and to guide the wheel set in rotation in the first position, and leaving the wheel set free in the second position, the lever being arranged to move in translation, between the retracted position and the deployed position.

First claim

What is claimed is:

1. A device for holding a wheel set of a timepiece movement comprising:
a lever mounted to slide via guide means on a main plate of the timepiece movement between a first and a second position, the lever slides in a linear direction corresponding to a longitudinal axis of the lever,
wherein the lever includes, at a first end, a locking beak cooperating with means for holding the wheel set to hold and to guide the wheel set in rotation in the first position and leaving the wheel set free in the second position, the lever being arranged to move in translation between the first position and the second position, and
wherein the first position is a retracted position and the second position is a deployed position.

2. The device according to claim 1 , wherein the means for holding the wheel set include a ring attached to the wheel set, the ring having a slot arranged to cooperate with the locking beak of the lever.

3. The device according to claim 2 , wherein the slot extends continuously over a circumference of the ring.

4. The device according to claim 1 , wherein the guide means include at least one opening in which engages a first screw being secured to the main plate and arranged to ensure the guiding of the lever.

5. The device according to claim 1 , wherein the guide means include at least a second opening in which engages a second screw being secured to the main plate and arranged to ensure locking of the lever.

6. The device according to claim 1 , wherein the main plate includes a housing configured for receiving a free end of the lever.

7. The device according to claim 6 further comprising elastic return means disposed inside the housing and acting on the free end of the lever to bias the lever to the deployed position.

8. The device according to claim 6 , wherein the free end of the lever includes a manipulation hole for moving the lever.

9. The device according to claim 7 , wherein the free end of the lever includes a manipulation hole for moving the lever.

10. A timepiece comprising the device according to claim 1 .

11. The device according to claim 4 , wherein the lever slides a length of the opening.

Assignees

• Eta Sa Mft Horlogere Suisse
• Eta Sa Mft Horlogere Suisse

Inventors

• Kammer Adrian

Classifications

• G04B35/00

  Adjusting the gear train, e.g. the backlash of the arbors, depth of meshing of the gears {(adjusting the escapement G04B15/12)} · CPC title

• G04B29/04

  Connecting or supporting parts · CPC title

• G04B19/268 Primary

  with indicators for the phases of the moon · CPC title

• G04B13/02 Primary

  Wheels; Pinions; Spindles; Pivots (bearings G04B31/00 {; chain wheels, spindles for chain wheels, also chains and driving weights G04B1/08}) · CPC title

• G04B31/00

  Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor (bearings in general F16C {; manufacture and composition of springs G04B1/145; suspension of oscillating weights G04B5/18; suspension of a pendulum G04B17/02; bearings for electrical measurement apparatus G01R1/10, G01R1/12, G01R11/12, G01R11/14; inserting jewels A44C17/04; inserting cutting diamonds B23P5/00; devices for fixation of bearing jewels, bearing sleeves, or the like G04D3/04}) · CPC title