Fuse apparatus

Claim 2

Fuse apparatus for initiation of an acceptor explosive, comprising: a housing member defining a longitudinal chamber, said member including a frangible partition closing one end of said chamber, said partition being crushable by the inertia of said housing member at setback, said member further defining at least one port connecting said chamber at a point near said partition to the exterior of said member; detonator means disposed within said chamber, spaced from said partition, for initiating said acceptor explosive outside said chamber proximate said partition; a fluid barrier material disposed within said chamber between said detonator means and said partition to prevent initiation of said acceptor explosive; spring means urging said detonator against said barrier material and said partition; and means for sealing said port until a predetermined arming environment is experienced, said material tending to flow out of said chamber, whereby said barrier material provides ''''safing'''' until said environment causes expulsion of said barrier material over a time interval.

Claim 3

The apparatus of claim 1 wherein said detonator is an electric detonator having electrical contact means at the end distal proximate said partition, and including electrical shorting means for shorting said electrical contact means until said barrier material is expelled and said spring moves said detonator toward said partition.

Claim 4

Fuse apparatus, comprising; a detonator positioned along the spin axis of a projectile; a sleeve surrounding said detonator, having orifices through the walls near one end; housing means, surrounding said sleeve, for closing said orifices; a booster explosive located to the rear of said housing means; a booster cup surrounding said booster explosive, said booster cup having a crushable bubble extending forward of said booster cup and against the end of said sleeve having orifices and against the end of said housing means; a bulkhead located forward of said aluminum housing; a fluid barrier material located within the cavity formed near said orifices by said detonator, said crushable bubble, and said sleeve; and spring means urging said detonator along said axis of said projectile toward said booster cup, through said sleeve, against said fluid barrier material, whereby, upon setback, said housing member causes said crushable bubble to deflect, allowing said spring to open said orifices, said fluid barrier material being expelled whereupon said detonator is in a position to actuate said booster explosive.

Claim 5

Fuse apparatus, comprising; a detonator positioned along the spin axis of a projectile; a sleeve surrounding said detonator, having orifices through the walls near one end; housing means, surrounding said sleeve, for closing said orifices; a booster explosive located to the rear of said housing means; a booster cup surrounding said booster explosive, said booster cup having a crushable bubble extending forward of said booster cup and against the end of said sleeve having orifices and against the end of said housing means; a bulkhead located forward of said aluminum housing; a fluid barrier material located within the cavity formed near said orifices by said detonator, said crushable bubble, and said sleeve; and spring means urging said detonator along said axis of said projectile toward said booster cup, through said sleeve, against said fluid barrier material, whereby, upon setback, said housing member causes said crushable bubble to deflect, allowing said spring to open said orifices, said fluid barrier material being expelled whereupon said detonator is in a position to actuate said booster explosive.