Variable-geometry timepiece display mechanism with resilient hand
US11860577B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2019 |
| Grant date | Jan 2, 2024 |
| Priority date | — |
| Expiry date | Aug 2, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04B13/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A variable timepiece display mechanism includes a resilient hand with two drive pipes integral with a one-piece flexible strip includes a tip or an index, with a driver for driving the pivoting of the pipe, and a stressor for stressing the strip so as to vary the position of the tip relative to the axis of the pipes, which includes an accelerator or decelerator device arranged such that it accelerates, or stabilizes the speed of, or slows down the first pipe and/or the second pipe over at least part of the angular travel thereof, which includes a device with a first differential gear on the drive gear train of the first pipe and/or a second differential gear on the drive gear train of the second pipe, and at least one cam forming an input of a differential gear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.