Installation apparatus for attaching a fastener to a panel
US5722139A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 1995 |
| Grant date | Mar 3, 1998 |
| Priority date | — |
| Expiry date | May 11, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/9428
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An improved installation apparatus and method of attaching a female fastener element, such as a self-riveting nut fastener, to a metal panel, wherein a small hole is first formed in the panel and the annular riveting portion of the fastener is driven through the hole and locked to the panel. The improved method of this invention includes locating the fastener on the panel, then driving a tapered punch through the fastener board to pierce a small hole in the panel, then driving a conical exterior surface of the punch through the hole, to enlarge the hole, and substantially simultaneously driving the fastener riveting portion against the panel and through the panel opening into a die member to lock the fastener on the panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.