Manual tool for precision forming of ear wires for jewelry
US9888750B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 2015 |
| Grant date | Feb 13, 2018 |
| Priority date | — |
| Expiry date | Jan 28, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21F1/06
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A tool is provided for bending wire for use in earrings. The tool has a two handles; an anvil plate; two terraced floating bars; two forming links, each having a stanchion projecting therefrom and a forming link rod projecting from the first forming link; an upper and lower linkage arm; a translating pin; and a planetary gear having an eccentric forming rod projecting from its lower face. The anvil plate has a longitudinal slot and arcuate minor and major forming slots formed therethrough; a circumferential gear formed on one side of the anvil plate, adjacent and exterior to the major forming slot, spanning less than 360°; and a retaining wall and a forming anvil formed on the other side of the anvil plate. The handles are pivotally joined to the anvil plate such that the forming link rod and a stanchion engage a wire lying against the retaining wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.