The Perkin-elmer Corporation

Excelitas Technologies Corp.

Eg&g Star City, Inc.

Robert J Tomasoski

Barry T Neyer

John T Adams

Paul Thomas Moore

Daniel Raymond Knick

Barry Neyer

Daniel R Knick

James C Edwards

George Papadopoulos

T Andrew Demana

Robert Tetreault

An initiator including a housing adapted to be received in an igniter or rocket motor, at least one charge at a distal end of the housing, an electro-explosive device behind the charge for detonating the charge when subject to a voltage HV, and a pressure bulkhead behind the electro-explosive device. An electronic subsystem in the housing is connected to the electro-explosive device through the bulkhead and includes a lead for providing the voltage HV to the electro-explosive device to initiate it, and a switch in the lead which does not conduct if errant voltages are present on the lead to prevent initiation of the electro-explosive device until the correct voltage HV is present.

Initiator

A chip slapper including a substrate, a sticking layer on the substrate, a conductive layer on the sticking layer in the shape of two lands separated by a bridge portion between the two lands, a buffer material on the conductive layer, a protective coating on the buffer layer extending across at least a substantial portion of the two lands but absent from the bridge portion, and a flyer layer over the bridge portion. The buffer layer prevents migration of the material of the coating into the material of the conductive layer and vice versa and better adheres the flyer layer on the bridge portion where the coating is absent.

Multilayer chip slapper

A disarmable firing module with a firing module housing having an opening therein; a detonator holder received in the firing module housing via the opening in the firing module housing, the detonator holder including a cavity therein; a detonator disposed in the cavity of the detonator holder; and a detonator electronics assembly housed within the firing module housing. The detonator holder is removably secured within the housing which allows the detonator to be separated from the detonator electronics assembly to disarm the firing module.

Disarmable firing module

A detonator with a base portion including opposing electrical leads; an exploding foil initiator on the base portion, the exploding foil initiator including two conductive lands separated by a bridge portion therebetween; and a connecting barrel of a predetermined thickness on the exploding foil initiator for optimizing the spacing between the exploding foil initiator and an explosive charge and for robustly interconnecting the lands of the exploding foil initiator with the electrical leads of the base portion.

Detonator

A detonator with a base portion including a header wall terminating in a support surface; an initiator on the support surface; an explosive charge spaced from the initiator; and a cap having an interior top surface and an enclosure wall extending downward from the interior top surface and surrounding the initiator and the explosive charge. The wall terminates in a rim secured at a location along the header wall corresponding to the thickness of the initiator, the spacing between the initiator and the explosive charge, and the thickness of the explosive charge thereby ensuring that the explosive charge is in communication with the interior top surface of the cap.

Growing community of inventors

Centerville, OH, United States of America

Robert J Tomasoski