Shaped primer
US4982662A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1990 |
| Grant date | Jan 8, 1991 |
| Priority date | — |
| Expiry date | Feb 28, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42B3/10
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A primer for explosives comprises a shaped charge of detonating material for use with an initiator such as a detonator or fuse cord which penetrates into the charge at least about as far as its center of mass, wherein said primer has a cavity for receiving said initiator and a shock attenuator in the form of an insert of inert material of lower density than the detonating material which extends from the surface of the charge into the charge to a desired detonation region and has a portion surrounding at least a part of the length of the cavity and defining an inlet for insertion of said initiating means, the density of the insert relative to the detonating material and shape thereof providing for improved detonation of the primer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.