Threaded insert
US4288189A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 10, 1979 |
| Grant date | Sep 8, 1981 |
| Priority date | — |
| Expiry date | Aug 10, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B37/122
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A threaded insert and method for making same which is particularly usable when fixedly positioned within a base material which itself is molded about the threaded insert, the threaded insert comprising a generally cylindrical body which is preferably knurled about the exterior thereof to provide a means for fixed securement between the insert and the surrounding base material, the cylindrical body including a central bore extending part way or completely through the insert, the central bore being threaded such that each individual thread includes a burnished end thereof such as to provide an arcuate surface immediately adjacent the mold or immediately adjacent the pin extending through the central bore to prevent the seepage of base material when under pressure during molding past the threads to foul the threads by having base material therein, the dimension of the burnishing on the tips of the threads being of such small dimension that the first placement of a threaded male member into the threaded central bore of the insert will immediately scrape off the burnished edges and thereby assume the normal threaded configuration, the threaded inserts being of either a closed end or ope…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.