Drawing-out tool for sheet metal
US11433449B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 2, 2019 |
| Grant date | Sep 6, 2022 |
| Priority date | — |
| Expiry date | Apr 10, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D53/36
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
To provide a drawing-out tool for sheet metal which is less in failure and excellent in the durability and has excellent handling property by evading generation of trouble in an electric system by shielding dust, metal dust, soil dust or the like from mingling in or attaching to the electric system. The drawing-out tool for sheet metal comprises a center shaft (22); a first operation means (20) provided with a bit (25) arranged to an apex part of the center shaft; a second operation means (30) for pulling-up the first operation means; and an energization mechanism (100) for supplying electric current to the bit are provided. The housing (10) for accommodating the illumination unit (70) and the illumination unit for illuminating a sheet metal surface accommodated in the housing are included.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.