Abstract: The present invention provides a system and method for preparing armor made of para-aramid fibers, including a plurality of rollers feeding an input source of the para-aramid fibers, the fibers being at a first temperature. The system and method include a heating mechanism encapsulating at least a portion of the plurality of rollers, the heating mechanism heating the para-aramid fibers fed by the rollers from the first temperature to a second temperature. The method and system include a press, including a plurality of plates, whereupon the para-aramid fibers reaching the second temperature, the para-aramid fibers are fed into and compressed between the plurality of plates by the press, and heated to a third temperature. The method and system include a cooling section supporting the plurality of plates and the para-aramid fibers compressed therein while the para-aramid fibers cool from the third temperature to a fourth temperature.

Abstract: An improved protective face mask used to filter out hazardous pollution and airborne germs and viruses. Embodiments include a three layer version including a first spunbond TETHYS SHIELD treated layer, a meltblown filtration layer, and a second spunbond layer; a four layer version further including a gasket layer formed of a felt material; and a five layer version further including an activated carbon layer in between the spunbond TETHYS SHIELD treated layer and the meltblown filtration layer.

Abstract: A pre-fabricated assemblies and methods of use for coating substrates are described. The pre-fabricated assembly includes at least two layers in a stack, each layer includes at least one raw material. The raw material in each layer may be a dielectric material. One type of stack has one outer layer as an exposed layer. One type of stack has an exposed portion with each layer, and a portion of all layers is exposed. In use, a stack in a pre-fabricated assembly is positioned in a vacuum chamber system and energy is delivered sequentially to the exposed layer, removing at least a portion of each exposed layer. Each layer becomes an exposed layer and is deposited on the substrate in a sequential manner. The pre-assembled raw material stack is used to fabricate a multi-layered coating, such as a multi-layered coating for an optical or ophthalmic article.

Abstract: Provided is a method of coating a substrate is provided. The method includes providing at least one test substrate, b) a programmed physical thickness (T) for at least one layer of the multi-layered coating, and c) a design file including a target physical thickness and target spectral performance for the at least one layer of the multi-layered coating; depositing the at least one layer onto the test substrate to form an applied layer having an optical thickness; measuring a spectral performance of the applied layer; and comparing the programmed physical thickness (T) to the optical thickness of the applied layer, thereby generating a data set (?T). A system and an optical article produced by the method are also disclosed.

Abstract: A chemical ordnance containment and transport bag is described. The bag may comprise a flexible body, an end portion, a zipper bisecting the flexible body along two longitudinal sides and a lateral side and terminating at the end portion, and a plurality of straps which extend widthwise across the flexible body from each longitudinal portion of the zipper. The flexible body may comprise one or more layers of activated carbon cloth comprising at least one layer of knitted activated carbon cloth and at least one layer of woven activated carbon cloth. Embodiments may also include a method of securing chemical ordnance, comprising providing a chemical ordnance containment and transport bag, placing a chemical ordnance item inside the bag, and closing the zipper and adjusting the straps to secure the chemical ordnance item inside the bag.

Abstract: Vapor deposition apparatuses, systems, and methods for selectively coating, with one or more functional layers, a substrate through the use of moveable shutters are described. Embodiments of the present disclosure can be useful for coating eyeglass lenses. Still other embodiments are described.

Abstract: A chemical ordnance containment and transport bag is described. The bag may comprise a flexible body, an end portion, a zipper bisecting the flexible body along two longitudinal sides and a lateral side and terminating at the end portion, and a plurality of straps which extend widthwise across the flexible body from each longitudinal portion of the zipper. The flexible body may comprise one or more layers of activated carbon cloth comprising at least one layer of knitted activated carbon cloth and at least one layer of woven activated carbon cloth. Embodiments may also include a method of securing chemical ordnance, comprising providing a chemical ordnance containment and transport bag, placing a chemical ordnance item inside the bag, and closing the zipper and adjusting the straps to secure the chemical ordnance item inside the bag.

Abstract: A pre-fabricated assemblies and methods of use for coating substrates are described. The pre-fabricated assembly includes at least two layers in a stack, each layer includes at least one raw material. The raw material in each layer may be a dielectric material. One type of stack has one outer layer as an exposed layer. One type of stack has an exposed portion with each layer, and a portion of all layers is exposed. In use, a stack in a pre-fabricated assembly is positioned in a vacuum chamber system and energy is delivered sequentially to the exposed layer, removing at least a portion of each exposed layer. Each layer becomes an exposed layer and is deposited on the substrate in a sequential manner. The pre-assembled raw material stack is used to fabricate a multi-layered coating, such as a multi-layered coating for an optical or ophthalmic article.

Abstract: A flashlight that includes contacts that close a circuit when the flashlight is in water. The closed circuit provides a connection between batteries and a lamp, lighting the lamp. The flashlight is sealed so that it floats when dropped in the water.

Abstract: A flashlight that includes contacts that close a circuit when the flashlight is in water. The closed circuit provides a connection between batteries and a lamp, lighting the lamp. The flashlight is sealed so that it floats when dropped in the water.

Abstract: A two stroke internal combustion engine includes a cylinder with a piston slidably sealed in the cylinder, a plurality of transfer ports open into the cylinder and at least one exhaust port leads from the cylinder, the transfer ports are connected to a common inlet manifold and a common valve member is provided to regulate the flow of air from the inlet manifold to the transfer ports and to vary the flow of air through one transfer port relative to the flow of air through at least one other transfer port.