# US 10,120,339 B2 · Device for holding a wheel set > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,120,339 B2 - Document ID: US10120339B2 - Status: Granted - Kind: B2 - Application number: 15/397,956 - Filed: 2017-01-04 - Published: 2017-10-26 - Granted: 2018-11-06 - Earliest claimed: 2016-04-25 - Assignees: ETA SA Manufacture Horlogere Suisse - Applicants: ETA SA Manufacture Horlogere Suisse - Inventors: Adrian Kammer - Web page: https://patentgrep.com/patent/US10120339B2 ## CPC - G04B 19/268: {with indicators for the phases of the moon} - G04B 13/02: Wheels; Pinions; Spindles; Pivots (bearings G04B31/00 {; chain wheels, spindles for chain wheels, also chains and driving weights G04B1/08}) - G04B 15/14: Component parts or constructional details, e.g. construction of the lever or the escape wheel {(assembly and manufacture of the spring G04B1/145; assembly and manufacture of components, e.g. pinions, spindles G04B13/02; lubrication of clockwork bearings G04B31/008; oils for clockwork bearings in general G04B31/08)} - G04B 29/04: Connecting or supporting parts - G04B 31/00: 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}) - G04B 35/00: Adjusting the gear train, e.g. the backlash of the arbors, depth of meshing of the gears {(adjusting the escapement G04B15/12)} - G04B: MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS (spring- or weight-driven mechanisms in general F03G; electromechanical clocks or watches G04C; electromechanical clocks with attached or built-in means operating any device at pre-selected times or after predetermined time intervals G04C23/00; clocks or watches with stop devices G04F7/08) ## 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. ## Claims ### Claim 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. ### Claim 2 (depends on 1) 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. ### Claim 3 (depends on 2) The device according to claim 2, wherein the slot extends continuously over a circumference of the ring. ### Claim 4 (depends on 1) 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. ### Claim 5 (depends on 1) 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. ### Claim 6 (depends on 1) The device according to claim 1, wherein the main plate includes a housing configured for receiving a free end of the lever. ### Claim 7 (depends on 6) 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. ### Claim 8 (depends on 6) The device according to claim 6, wherein the free end of the lever includes a manipulation hole for moving the lever. ### Claim 9 (depends on 7) The device according to claim 7, wherein the free end of the lever includes a manipulation hole for moving the lever. ### Claim 10 (depends on 1) A timepiece comprising the device according to claim 1. ### Claim 11 (depends on 4) The device according to claim 4, wherein the lever slides a length of the opening.