Explosive cutting system
US4378844A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1979 |
| Grant date | Apr 5, 1983 |
| Priority date | — |
| Expiry date | Jun 29, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42D1/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed are method and apparatus for cutting tubular members from the inside by use of an explosive-induced shock wave. In a particular disclosed embodiment, an electric detonator is used to initiate two equal lengths of linear explosives, each of which initiates a non-electric detonator, to provide dual simultaneous detonation of both ends of an elongate high explosive charge distribution. The resulting collision of detonation shock fronts at or near the center of the explosive charge diverts the shock energy 90.degree. into a 360.degree. distribution about the axis of the charge distribution in a plane perpendicular to that axis to provide the energy to cut a tubular member circumscribing the explosive charge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.