Bae Systems, Inc.

Thomas Mark Plucinski

Richard John Harper

Samuel David Charles Parfitt

Stephen William McLaren

A tamper-resistant lock assembly comprising a plate having a slot for receiving a key, the slot extending through the plate from an opening in a front face thereof to an exit in an opposing rear face thereof, the opening having a first profile and the exit having a second, different profile, the key comprising a shaft having a bit extending therefrom, the bit being formed of a shape memory material and being pre-configured such that its cross-sectional shape in its temporary form matches the first profile and the bit can be inserted through the slot via the opening and, upon application of a predetermined external stimulus, returns to a permanent form in which its cross-sectional shape matches the second profile and the bit can be retracted from the slot via the exit.

Lock for a tamper resistant assembly

A waveguide comprising first and second waveguide sections, each waveguide section comprising a main body portion () and a connecting portion () at its distal end, said first and second waveguide sections being longitudinally aligned to define a conduit therethrough with a butted interface () therebetween, the connecting portion of each waveguide section having: (i) a first circumferential ridge () on its outer surface located adjacent its distal end, (ii) a second circumferential ridge () on its outer surface spaced apart from the first circumferential ridge, and (iii) a third circumferential ridge () on its outer surface located between said first and second circumferential ridges, such that a first respective recess () is defined between said second and third circumferential ridges and a second respective recess () is defined between said first and third circumferential ridges; the waveguide further comprising a sleeve member () over said butted interface (), such that a respective first cavity () is defined between an inner surface of said sleeve member () and each said first recess () and a respective second cavity is defined between the inner surface of said sleeve member () and each said second recess (), each said first cavity () having a chemical adhesive therein operative to join said first and second waveguide sections together by means of said sleeve member ().

Apparatus for connecting first and second waveguide sections comprising an adhesive disposed in cavities between circumferential ridges and a sleeve member

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Chelmsford, United Kingdom

Thomas Mark Plucinski