Abstract: A head protection system comprises a helmet shell, a visor mounting for pivotally mounting a visor to the shell to enable the visor to be moved between raised and lowered positions, and a retainer for releasably retaining the visor to the helmet. The system includes a visor adapted for mounting on the shell which comprises a substrate of transparent thermoplastic material and a backing substrate comprising a plurality of layers of high performance, ballistic resistant material. The system may further include a second visor which can be releasably connected to the shell using the same visor mounting and which may have a different construction and primary function.

Abstract: A container comprises a chamber for accommodating one or more components whose temperature is to be controlled, and a heat transfer device for receiving heat transfer fluid for controlling the temperature of the chamber. The chamber has a fluid inlet for introducing a second fluid into the chamber and a fluid inlet permitting the second fluid to exit from the chamber. A fluid impeller is provided for causing the second fluid to flow in heat: exchange relationship with the heat transfer device and into the chamber through the fluid inlet to cool one or more components in the chamber. A fluid coupling is provided for coupling the heat transfer device to a fluid temperature conditioning system installed in a vehicle.

Abstract: A hand protection system for use by individuals involved in de-mining operations to locate and identify buried anti-personnel mines is designed to provide a degree of protection to the hands of the operative while still enabling the hands to perform necessary operations such as manipulating a probe rod, clearing soil by use of the fingers, etc. In one form the hand protector is a trough-shaped shield which tapers to a rounded forward end and is adapted to fit over the back of the hand of the user, the shield being open on its underside so that the user's fingers can be manipulated. In another form the hand protecting shield is of conical shape having a hole through its narrow end through which a probe can be extended and manipulated by a hand received within the protector. The protector includes laminated layers of aramid fibers together with other tough blast resistant materials such as polycabonate.