초록 ▼

An improved electro-explosive squib device is disclosed with filter/shield characteristics rendering the device substantially immune to electromagnetic environments, thus preventing accidental ignition of the squib device. The invention provides for adapting existing squibs or constructing new squib

An improved electro-explosive squib device is disclosed with filter/shield characteristics rendering the device substantially immune to electromagnetic environments, thus preventing accidental ignition of the squib device. The invention provides for adapting existing squibs or constructing new squibs with immunity to the electromagnetic environments while adding only a minimal amount of material to the device, thus minimizing the possibility of personnel injury caused by debris ejected from rocket propellant ignited by the squib device. These benefits are achieved while maintaining reliability and extended shelf life, and at minimal cost of conversion or manufacture of the squib devices.

대표청구항 ▼

A squib for use in an electromagnetic environment, comprising: a cup-shaped casing; an explosive charge located in the end of said casing; a bridgewire located in said casing adjacent said explosive charge; packing for sealing said bridgewire and said explosive charge in said casing; a first wire co

A squib for use in an electromagnetic environment, comprising: a cup-shaped casing; an explosive charge located in the end of said casing; a bridgewire located in said casing adjacent said explosive charge; packing for sealing said bridgewire and said explosive charge in said casing; a first wire connected to one end of said bridgewire and extending through said packing out of said casing at a first location in said packing; a second wire connected to the other end of said bridgewire and extending through said packing out of said casing at a second location in said packing spaced away from said first wire; first means for filtering out currents induced in said first wire by said electromagnetic environment, said first filter means connected to said first wire near said first location; second means for filtering out currents induced in said second wire by said electromagnetic environment, said second filter means connected to said second wire at said second location; and shield means for preventing said electromagnetic environment from causing currents in said bridgewire or the portion of said first and second wires between said bridgewire and said first and second filter means, respectively, said shield means being electrically connected to said casing and said first and second filter means.