Self-attaching female fasteners and method of forming female fastener elements
US7011584B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2003 |
| Grant date | Mar 14, 2006 |
| Priority date | — |
| Expiry date | Mar 22, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B37/062
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of forming a female fastener including rolling a body portion strip having a midportion and flange portions on opposed sides of the midportion, piercing spaced openings through the midportion, cutting the strip to length between the openings, cold forming a separate generally cylindrical pilot portion having a length greater than the width of the midportion and a diameter greater than the opening through the midportion, preferably including radial splines, and press fitting the pilot portion through the opening in the midportion. The self-attaching female fastener thus includes a rectangular body portion and a generally cylindrical pilot portion having an end face spaced above a plane of the midportion and may be formed of a harder metal than the body portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.