US 5,969,286 A · Low impedence slapper detonator and feed-through assembly

Abstract

A slapper detonator includes an explosive pellet disposed within a detonator housing and a bridge chip disposed within a pocket defined between a pair of printed circuit boards. One of the printed circuit boards is disposed between the bridge chip and the explosive pellet and includes an opening centered over the bridge element to permit a flyer to accelerate before impacting the explosive pellet. The printed circuit board with the opening also establishes a connection between the bridge contact pads and metalized patterns or pads on the other printed circuit board which are, in turn, connected with metalized patterns or pads on an opposite side of the board. Various input contacts can be attached to the metalized pads, including an adapter board which converts side-by-side pads to concentric pads to permit coaxial connectors to be used. The slapper detonator can be used with a hermetic feed-through assembly having a feed-through housing which connects to a fuze housing in hermetically sealed relation and output contacts which mate in a detachable manner with the input contacts on the slapper detonator to permit removal of the detonator from the fuze electronics for periodic inspection and testing.

Claims18

Dependent claims

A slapper detonator comprising

a detonator housing having first and second ends;
an explosive pellet disposed within said detonator housing adjacent said first end;
a bridge chip including a surface with a metalized portion defining a pair of contact pads connected by a bridge element, and a flyer disposed between said bridge element and said explosive pellet;
a header assembly including a first printed circuit board disposed between said bridge chip and said explosive pellet, a second printed circuit board disposed between said bridge chip and said second end of said detonator housing, and a pocket defined between said first and second printed circuit boards for receiving said bridge chip;
said second printed circuit board including a first surface with a pair of metalized pads facing said first printed circuit board and a second surface with a pair of metalized pads connected with said pads on said first surface;
and
said first printed circuit board including a first surface with a pair of metalized pads facing said second printed circuit board, each metalized pad of said first printed circuit board overlapping a contact pad of said bridge chip and a metalized pad on said first surface of said second printed circuit board to create a connection therebetween and with said metalized pads on said second surface of said second printed circuit board.

4 more elements

Dependencies are inferred from the claim text.

Low impedence slapper detonator and feed-through assembly

Life of this patent

Low impedence slapper detonator and feed-through assembly

Life of this patent

Abstract

Claims18