Abstract: An apparatus for providing electrical power to and communicating data and/or control signals to a helmet accessory device includes a control module attachable to the helmet and including a processor, power supply interface, and one or more control module connectors. One or more helmet side rail assemblies have a plurality of interface slots. At least one insert includes a connector element and is adapted for operative coupling with the helmet accessory device. The processor includes a communication interface for exchanging data and/or control signals with the helmet accessory device via the insert connector element. At least one cable comprises a first connector end adapted to couple a control module connector and a second connector end configured to couple to the insert connector element. Each of the one or more helmet side rail assemblies has an internal space configured for routing at least a portion of the cable.

Abstract: An apparatus for providing electrical power and communication of data and control signals to a weapon rail interface includes a controller with a battery adaptor for attaching a power supply. A connector element on the controller allows devices to interface with the controller via a cable connection. Additional devices can be connected in sequential manner via daisy chaining, using inserts chainable together and configured to mechanically attach to slots on a legacy slot rail interface.

Abstract: A stencil printing method and apparatus for printing paste material in a given pattern on a substrate from a paste dispenser through a stencil to define the stencil pattern on a substrate. The apparatus is provided with a cleaning module that can be moved against the printing face of the stencil and moved, along a given path beneath the stencil, for cleaning the printing face of the stencil. The cleaning module includes a blade assembly mounted there on transverse to the path of movement of the cleaning module. The print apparatus further including selectively operable means for actuating the blade assembly during a select cleaning cycle to engage the leading end of its blade with the underside of the stencil as the cleaning module is passed beneath said stencil whereby the leading edge of the blade scrapes debris from the underside of said stencil.