Self-flanging nut and joint construction
US4018257A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 1975 |
| Grant date | Apr 19, 1977 |
| Priority date | — |
| Expiry date | Dec 15, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4992
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A self-flanging nut construction utilizing a tubular body having a laterally extending flange at one end and an opening therethrough, said opening having a first portion and a second portion of differing cross sectional areas, the first portion being formed with a thread and the second portion defining a riveting flange. A plurality of circumferentially spaced serrations or ribs are provided on the periphery of said body adjacent said flange. When the nut is placed adjacent a sheet metal body having an opening therein with the opening in alignment with the opening in the nut and the nut is forced against said plate, the metal surrounding said opening in said plate is first deformed axially of the opening to form a tubular portion and thereafter the riveting flange is deformed laterally outwardly over the end of the tubular portion formed on said plate. The circumferential spacing, width and thickness, and length of the ribs is such that the metal is deformed outwardly at the ribs while the metal between the ribs remains substantially as formed into the tubular portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.