US 7,069,861 B1 · Micro-scale firetrain for ultra-miniature electro-mechanical safety and arming device

Abstract

A microscale firetrain for a safe and arm device having a safe position and an armed position, the firetrain including an input explosive column having a longitudinal axis; a transfer charge having a longitudinal axis and first and second ends and movable from a safe position to an armed position; a receptor charge having a longitudinal axis that is non-collinear with and substantially parallel to the longitudinal axis of the input explosive column; wherein, in the safe position, the transfer charge is remote from both the input explosive column and the receptor charge; and wherein, in the armed position, the input explosive column is adjacent the first end of the transfer charge to thereby initiate the transfer charge, the longitudinal axis of the input explosive column is substantially perpendicular to the longitudinal axis of the transfer charge, the second end of the transfer charge is adjacent the receptor charge to thereby initiate the receptor charge and the longitudinal axis of the receptor charge is substantially perpendicular to the longitudinal axis of the transfer charge.

Claims27

Dependent claims

A firetrain for a safe and arm device having a safe position and an armed position, the firetrain comprising:

an input explosive column having a longitudinal axis;
a transfer charge having a longitudinal axis and first and second ends and movable from the safe position to the armed position;
a receptor charge having a longitudinal axis that is non-collinear with and substantially parallel to the longitudinal axis of the input explosive column;
wherein, in the safe position, the transfer charge is remote from both the input explosive column and the receptor charge;
and
wherein, in the armed position, the input explosive column is adjacent the first end of the transfer charge to thereby initiate the transfer charge, the longitudinal axis of the input explosive column is substantially perpendicular to the longitudinal axis of the transfer charge, the second end of the transfer charge is adjacent the receptor charge to thereby initiate the receptor charge and the longitudinal axis of the receptor charge is substantially perpendicular to the longitudinal axis of the transfer charge.

3 more elements

A safe and arm assembly having a safe position and an armed position, comprising:

an input explosive column having a longitudinal axis;
a transfer charge having a longitudinal axis and first and second ends and movable from the safe position to the armed position;
a receptor charge having a longitudinal axis that is non-collinear with and substantially parallel to the longitudinal axis of the input explosive column;
wherein, in the safe position, the transfer charge is remote from both the input explosive column and the receptor charge;
and
wherein, in the armed position, the input explosive column is adjacent the first end of the transfer charge to thereby initiate the transfer charge, the longitudinal axis of the input explosive column is substantially perpendicular to the longitudinal axis of the transfer charge, the second end of the transfer charge is adjacent the receptor charge to thereby initiate the receptor charge and the longitudinal axis of the receptor charge is substantially perpendicular to the longitudinal axis of the transfer charge;
a spot charge disposed adjacent the input explosive column, for initiating the input explosive column;
an initiator chip disposed adjacent the spot charge, for initiating the spot charge;
an
output charge disposed adjacent the receptor charge, the receptor charge initiating the output charge;
a base assembly having the output charge and a first portion of the receptor charge disposed therein;
a safe and arm device layer disposed atop the base assembly, the safe and arm device layer including an arming mechanism movable between the safe position and the armed position, the transfer charge being disposed in the arming mechanism and a second portion of the receptor charge being disposed in the safe and arm device layer;
a cover plate assembly disposed atop the safe and arm device layer and having the input explosive column disposed therein;
and
an initiator board assembly disposed atop the cover plate assembly and having the spot charge and the initiator chip disposed therein.

12 more elements

A safe and arm assembly having a safe position and an armed position, comprising:

an input explosive column having a longitudinal axis;
an input charge having a longitudinal axis and first and second ends, the input explosive column being substantially perpendicular to and adjacent the first end of the input charge;
a transfer charge having a longitudinal axis and first and second ends and movable from the safe position to the armed position;
a receptor charge having a longitudinal axis that is substantially collinear with the longitudinal axis of the input charge;
wherein, in the safe position, the transfer charge is remote from both the input charge and the receptor charge;
and
wherein, in the armed position, the second end of the input charge is adjacent the first end of the transfer charge to thereby initiate the transfer charge, the longitudinal axis of the input charge is substantially collinear with the longitudinal axis of the transfer charge, the second end of the transfer charge is adjacent the receptor charge to thereby initiate the receptor charge and the longitudinal axis of the receptor charge is substantially collinear with the longitudinal axis of the transfer charge;
a spot charge disposed adjacent the input explosive column, for initiating the input explosive column;
an initiator chip disposed adjacent the spot charge, for initiating the snot charges;
an
output charge disposed adjacent the receptor charge, the receptor charge initiating the output charge at the output;
a base assembly;
a safe and arm device layer disposed atop the base assembly, the safe and arm device layer including an arming mechanism movable between the safe position and the armed position, the transfer charge being disposed in the arming mechanism and the input charge and receptor charge being disposed in the safe and arm device layer;
a cover plate assembly disposed atop the safe and arm device layer and having the input explosive column disposed therein;
and
an initiator board assembly disposed atop the cover plate assembly and having the spot charge and the initiator chip disposed therein.

13 more elements

A safe and arm assembly having a safe position and an armed position, comprising:

an input explosive row having a longitudinal axis;
a transfer charge having a longitudinal axis and first and second ends and movable from the safe position to the armed position;
a receptor charge having a longitudinal axis that is substantially collinear with the longitudinal axis of the input explosive row;
wherein, in the safe position, the transfer charge is remote from both the input explosive row and the receptor charge;
and
wherein, in the armed position, the input explosive row is adjacent the first end of the transfer charge to thereby initiate the transfer charge, the longitudinal axis of the input explosive row is substantially collinear with the longitudinal axis of the transfer charge, the second end of the transfer charge is adjacent the receptor charge to thereby initiate the receptor charge and the longitudinal axis of the transfer charge is substantially collinear with the longitudinal axis of the receptor charge;
a spot charge disposed adjacent and perpendicular to the input explosive row, for initiating the input explosive row;
an initiator chip disposed adjacent the spot charge, for initiating the spot charge;
an
output charge disposed adjacent the receptor charge, the receptor charge initiating the output charge;
an output housing that contains the output charge;
and
a safe and arm device layer disposed in the output housing, the safe and arm device layer including an arming mechanism movable between the safe position and the armed position, the transfer charge being disposed in the arming mechanism, the input explosive row and the receptor charge being disposed in the safe and arm device layer;
and an initiator board assembly disposed atop the safe and arm device layer and having the spot charge and the initiator chip disposed therein.

11 more elements

Dependencies are inferred from the claim text.

Micro-scale firetrain for ultra-miniature electro-mechanical safety and arming device

Life of this patent

Micro-scale firetrain for ultra-miniature electro-mechanical safety and arming device

Life of this patent

Abstract

Claims27