Percussion Primer for Cartridge Actuated Devices.
Abstract
A percussion primer for cartridge actuated devices is disclosed. A moisture/oil resistant disc retains, supports, and environmentally seals the explosive charge within a cavity against the closed end of the primer cup. The disc, is retained against the charge by a support ring having flash holes that allow the burning gases to escape into an expansion chamber to initiate a pyrotechnic charge. A retaining ring is press fit into the open end of the primer cup to retain the support ring and disc. The support ring, retaining ring and disc provide environmental and vibration resistance, stable assembled height of the primer, and no requirement to reconsolidate the charge when the primer is assembled into the cartridge. The support ring also functions as a flat anvil to initiate functioning of the explosive charge. Two alternative embodiments incorporate either an extension of, or a spike-like projection into, the cavity to pinch the charge, or to concentrate at a point, the impact force exerted by the firing pin on the primer. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 24, 1981
- Accession Number
- ADD008812
Entities
People
- Bryan F. Beard
- Frank J. Valenta
Organizations
- United States Department of the Navy