Detonator assembly

Abstract

A detonator assembly which includes first and second cable coils, a detonator which is connected to one end of the first cable coil, a first connector which connects an opposing end of the first cable coil to one end of the second cable coil, a second connector which is connected to an opposing end of the second cable coil, and confinement structure around the first and second cable coils.

1 - 20 . (canceled)  
   
   
       21 . A detonator assembly which includes a first cable coil with first and second ends, a second cable coil with third and fourth ends, a detonator connected to the first end of the first cable coil, a first connector connected to the second end of the first cable coil and to the third end of the second cable coil, and a second connector connected to the fourth end of the second cable coil and wherein a first variable length of cable, extending from the first end, can be drawn from the first cable coil without materially moving the first connector and a second variable length of cable, extending from the fourth end, can be drawn from the second cable coil without materially moving the first connector.  
   
   
       22 . A detonator assembly according to  claim 21  wherein the first cable coil is provided in the form of a first tubular roll.  
   
   
       23 . A detonator assembly according to  claim 22  wherein the first end is inside the first tubular roll.  
   
   
       24 . A detonator assembly according to  claim 21  wherein the second cable coil is in the form of a second tubular roll.  
   
   
       25 . A detonator assembly according to  claim 24  wherein the fourth end is inside the second tubular roll.  
   
   
       26 . A detonator assembly according to  claim 21  wherein each cable coil is at least partly enclosed in sheet material.  
   
   
       27 . A detonator assembly according to  claim 21  wherein the cable coils are co-axially aligned with each other.  
   
   
       28 . A detonator assembly according to  claim 21  which includes confinement structure for maintaining the cable coils in a desired configuration.  
   
   
       29 . A detonator assembly according to  claim 28  wherein the confinement structure is a housing which is made from rigid sheet material.  
   
   
       30 . A detonator assembly according to  claim 28  wherein the confinement structure comprises flexible sheet material.  
   
   
       31 . A detonator assembly according to  claim 30  wherein the flexible sheet material is shrunk onto the cable coils.  
   
   
       32 . A detonator according to  claim 28  wherein the first connector is accessible without removing the confinement structure.  
   
   
       33 . A detonator according to  claim 28  wherein the confinement structure includes first and second compartments for the first and second cable coils respectively.  
   
   
       34 . A detonator assembly according to  claim 30  wherein the confinement structure is circular cylindrical.  
   
   
       35 . A detonator assembly according to  claim 30  wherein each cable coil comprises a plurality of windings which are arranged in over-lying layers around a hollow core and which form a circular cylindrical shape, with the first end extending from an innermost winding of the first cable coil, and the fourth end extending from an innermost winding of the second cable coil, the detonator assembly including confinement structure around the cable coils.