Method of assembling threaded insert bushing within a working material
US4481702A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 30, 1982 |
| Grant date | Nov 13, 1984 |
| Priority date | — |
| Expiry date | Sep 30, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/557
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An insert assembly includes a frustoconically shape cone nut (10), a cylindrical shell (20) and a bolt (36). The cone nut (10) has a longitudinal bore (12) which is tapped to accept the threads on the bolt. The shell (20) has projecting barbs (28) arranged in a helical pattern on the shell's outer surface. The assembly, comprising the bolt through the shell and threaded into the smaller diameter end of the nut cone, is driven into a bore in the work piece. The bolt is then rotated causing the cone nut to penetrate the shell resulting in radial expansion of the shell whereby the barbs become embedded in the work piece. A keying feature between the nut and the shell prevents nut rotation with the bolt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.