Injection-molding apparatus for attaching end fittings to detonating cords
US3990367A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 16, 1975 |
| Grant date | Nov 9, 1976 |
| Priority date | — |
| Expiry date | Jun 16, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42D1/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A typical end fitting arrangement includes a sleeve-like bearing member riving an end of the explosive cord and a coupling member, such as a threaded nut, slipped axially over the cord into a fixed position relative to the sleeve. To securely bind together the cord and the sleeve, a void is provided radially inwardly of the nut and a thermosetting material is directly injected into the void to flow over and around the components. Upon hardening, all components are locked together as an integral body. The injected material further provides a significantly-improved, hermetic seal. Special thermosetting materials having short glass fiber fillers are used to assure load-bearing strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.