Abstract: The present invention comprises an exoskeletal packaging arrangement for electronic circuitry and components employed in downhole tools such as are deployed in the bores of oil and gas wells. The invention includes a monocoque structure comprising interlocked bulkheads and shell plates, within which the electronic circuitry and components are protected in substantial isolation from vibration and shock. Also included in the invention is a coupling for providing an environmentally sealed electrical connection between adjacent tool housings containing the aforesaid bulkhead/shell plate monocoque structure.

Abstract: The present invention comprises a quick change coupling for hostile environment including means to assure alignment of electrical connectors carried by mating male and female components of said coupling, seal means between said components, and biasing means to assure the continued, non-damaging engagement of said electrical connectors.