Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
352 words
An electrically initiated squib allowing reduced loading and assembling procedures while attaining improved reliability for igniting, said electrically initiated squib comprising in combination: (i) a pair of electrically insulated lead members positioned in a spaced apart relationship and extending through an insulating plug member, said lead members having terminated ends outside said insulating plug member; (ii) a bridgewire fastened between said terminated ends of said lead members, said bridgewire constructed of a bimetallic composite selected from the group consisting of palladium and aluminum, platinum and aluminum, and ruthenium-palladium alloy and aluminum, said bridgewire having the capability of igniting an appropriate charge loosely confined within a holder member, said charge being spaced from said bridgewire and within a throw pattern of said bridgewire; and, (iii) a housing member for containing said insulating plug member, said lead members, and said bridgewire, said housing member and said plug member when in combination additionally defining a holder member that contains a predetermined quantity of said appropriate charge as a loose, easily-ignitable composition within the throw pattern of said bridgewire after said bridgewire is brought to its ignition temperature by the application of electrical current, said ignition temperature causing a violent exothermic reaction that is accompanied by a deflagration or a throwing out of the high temperature constituents of said bimetallic bridgewire, said easily-ignitable composition being a composition selected from the group of easily-ignitable compositions specified under pyrotechnic groups A-C as follows: Pyrotechnic group A: metal fuel-oxidizer, composition 1: magnesium 60% by weight and polytetrafluoroethylene 40% by weight; composition 2: boron 23.7%±2% by weight, potassium nitrate 70.7%±2% by weight, and binder 5.6% by weight; composition 3: zirconium 10 microns particle size 45% by weight and potassium perchlorate 6 to 17 microns particle size 55% by weight; and composition 4: aluminum flake 17 to 44 microns particle size 45% by weight and potassium perchlorate 6 to 17 microns particle size 55% by weight; Pyrotechnic group B: primary explosive, composition 1: lead azide; and composition 2: lead styphnate; Pyrotechnic group C: propellants, composition 1: double-base propellants; composition 2: single-base propellants; composition 3: composite propellants; and composition 4: black powders.
Claim 2
Dependent Claim
352 words
An electrically initiated squib allowing reduced loading and assembling procedures while attaining improved reliability for igniting, said electrically initiated squib comprising in combination: (i) a pair of electrically insulated lead members positioned in a spaced apart relationship and extending through an insulating plug member, said lead members having terminated ends outside said insulating plug member; (ii) a bridgewire fastened between said terminated ends of said lead members, said bridgewire constructed of a bimetallic composite selected from the group consisting of palladium and aluminum, platinum and aluminum, and ruthenium-palladium alloy and aluminum, said bridgewire having the capability of igniting an appropriate charge loosely confined within a holder member, said charge being spaced from said bridgewire and within a throw pattern of said bridgewire; and, (iii) a housing member for containing said insulating plug member, said lead members, and said bridgewire, said housing member and said plug member when in combination additionally defining a holder member that contains a predetermined quantity of said appropriate charge as a loose, easily-ignitable composition within the throw pattern of said bridgewire after said bridgewire is brought to its ignition temperature by the application of electrical current, said ignition temperature causing a violent exothermic reaction that is accompanied by a deflagration or a throwing out of the high temperature constituents of said bimetallic bridgewire, said easily-ignitable composition being a composition selected from the group of easily-ignitable compositions specified under pyrotechnic groups A-C as follows: Pyrotechnic group A: metal fuel-oxidizer, composition 1: magnesium 60% by weight and polytetrafluoroethylene 40% by weight; composition 2: boron 23.7%±2% by weight, potassium nitrate 70.7%±2% by weight, and binder 5.6% by weight; composition 3: zirconium 10 microns particle size 45% by weight and potassium perchlorate 6 to 17 microns particle size 55% by weight; and composition 4: aluminum flake 17 to 44 microns particle size 45% by weight and potassium perchlorate 6 to 17 microns particle size 55% by weight; Pyrotechnic group B: primary explosive, composition 1: lead azide; and composition 2: lead styphnate; Pyrotechnic group C: propellants, composition 1: double-base propellants; composition 2: single-base propellants; composition 3: composite propellants; and composition 4: black powders.
Claim 3
Dependent Claim
30 words
The electrically initiated squib as defined in claim 1 wherein said housing member is provided with an end cap which in combination with said housing member defines said holder member.
Claim 4
Dependent Claim
37 words
The electrically initiated squib as defined in claim 1 wherein a spacer member is employed in combination with said housing member to define said holder member, said housing member being in the form of a unitary construction.