Tool for piercing nut
US7269893B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 5, 2002 |
| Grant date | Sep 18, 2007 |
| Priority date | — |
| Expiry date | Sep 23, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53522
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A tool for piercing nuts that includes a die part, a punch part and a piercing nut feeder incorporated into the punch part. The piercing nut feeder is adapted to feed piercing nuts into a piercing nut holder in the punch part so that these nuts, when the punch part is pressed against the die part by a press, are to punch holes in and be attached to a metal sheet inserted between the punch part and the die part. A gas spring is arranged between the press and the punch part, which gas spring has at least one cylinder and a piston which is movably arranged in said cylinder and which is aligned with the press. The pressure in the cylinder to adjust the pressure exerted upon the piercing nut by the punch part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.