Explosive and thermic compositions or charges – Processes of making
Reexamination Certificate
2005-04-19
2005-04-19
Felton, Aileen (Department: 3641)
Explosive and thermic compositions or charges
Processes of making
C149S015000
Reexamination Certificate
active
06881284
ABSTRACT:
A cartridge primer which utilizes an explosive that can be designed to become inactive in a predetermined period of time: a limited-life primer. The explosive or combustible material of the primer is an inorganic reactive multilayer (RML). The reaction products of the RML are sub-micron grains of non-corrosive inorganic compounds that would have no harmful effects on firearms or cartridge cases. Unlike use of primers containing lead components, primers utilizing RML's would not present a hazard to the environment. The sensitivity of an RML is determined by the physical structure and the stored interfacial energy. The sensitivity lowers with time due to a decrease in interfacial energy resulting from interdiffusion of the elemental layers. Time-dependent interdiffusion is predictable, thereby enabling the functional lifetime of an RML primer to be predetermined by the initial thickness and materials selection of the reacting layers.
REFERENCES:
patent: 4190000 (1980-02-01), Shaull et al.
patent: 5266132 (1993-11-01), Danen et al.
patent: 5490911 (1996-02-01), Makowiecki et al.
patent: 5505799 (1996-04-01), Makowiecki
patent: 5525170 (1996-06-01), Stark et al.
patent: 5606146 (1997-02-01), Danen et al.
patent: 5717159 (1998-02-01), Dixon et al.
patent: 5773748 (1998-06-01), Makowiecki et al.
Makowiecki Daniel M.
Rosen Robert S.
Felton Aileen
Scott Eddie E.
Tak James S.
The Regents of the University of California
Thompson Alan H.
LandOfFree
Limited-life cartridge primers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Limited-life cartridge primers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Limited-life cartridge primers will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3390715