Method for manufacturing an ornamental hard material part provided with a polymer coating
US12235610B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2021 |
| Grant date | Feb 25, 2025 |
| Priority date | — |
| Expiry date | Apr 9, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04D3/0064
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ornamental part, for example for a timepiece, jewellery or telephone, in particular a watch case middle, and its manufacturing method, the part at least partly including a hard material having a Vickers hardness greater than 1000 HV, the method including the following main steps: a step of producing a precursor from a mixture of at least one powder material with a binder, a step of injecting the precursor into a mould in order to form a green body, a step of sintering the green body in order to form a body of the future part from the hard material, and a step of depositing a polymer material coating on one face of the part, the deposition being carried out by moulding on the body, in particular by injection into a mould, the coating and the hard material being inseparable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.