Raymond T Overstrom

US Patent:

20130112098, May 9, 2013

Filed:

Mar 9, 2011

Appl. No.:

13/582880

Inventors:

Tyson J. Plitt - Barkhamsted CT, US
Mark Dorman - North Granby CT, US
Raymond T. Overstrom - Glastonbury CT, US
John Childs - Shelburne VT, US

Assignee:

DYNO NOBEL INC. - Salt Lake City UT

International Classification:

C06C 5/06

US Classification:

102276

Abstract:

A gas-impermeable sealer element () for a detonator or other explosive initiation device includes a non-reactive sleeve () having a channel () formed therein. A reactive material strip () is sealed within the channel for transmission of an explosive's initiation signal through the sealer element (), either alone or in cooperation with transfer charges located at the input and/or output end of the non-reactive sleeve (). The reactive material strip () comprises a reactive metal wire or other substrate () having on one or both sides thereof a layer of reactive material (), either reactive metal foils which react exothermically when ignited, or a deposited fuel-oxidizer reactive material. The reactive materials, upon being energized, react exothermically in the absence of atmospheric oxygen or other extraneous oxidizer and so may be encapsulated, sealed or otherwise isolated from the atmosphere in use.

US Patent:

55223184, Jun 4, 1996

Filed:

Jan 20, 1995

Appl. No.:

8/376063

Inventors:

Ernest L. Gladden - Granby CT
Thomas A. Nadeau - Granby CT
Raymond T. Overstrom - Glastonbury CT

Assignee:

The Ensign-Bickford Company - Simsbury CT

International Classification:

F42B 316

US Classification:

10220213

Abstract:

An improved detonator includes a housing having an open end and an opposite, closed end and defining an axially-extending channel of the housing. A cushion element containing at least one aperture is disposed within the channel and is provided with a resilient, pliable and shock absorbent surface for contacting and retaining explosive material at the closed end of the detonator housing. The cushion element has a signal communicating membrane covering its at least one aperture for passage therethrough of an initiating signal to the explosive material. A method for assembling the detonator includes inserting explosive material into the axially extending channel of the detonator housing, inserting a cushion element having a signal communicating membrane into the channel, and pressing the cushion element towards the closed end of the housing for compacting the explosive material between the cushion element and the closed end of the housing.