A method of making a transparent article includes mixing an oxygen source, a nitrogen source, a magnesium source, a silicon source and a calcium source. The oxygen source, the nitrogen source, the magnesium source, the silicon source, and the calcium source are milled and heated to form a molten oxynitride glass modified by calcium and magnesium. The molten oxynitride glass modified by calcium and magnesium is then cooled to form a transparent body having ballistic resistance with a level of performance satisfying Level IV of National Institute of Justice Standard 0108.01. Transparent articles having transparent bodies formed from the oxynitride glass are also described.

An anti-ballistic protection system for protecting a space in a building or vehicle comprising a protective blind including plurality of slats or a sheet of a laminated material having a plurality of layers of lightweight, flexible, ballistic resistant material which are secured together using a glue, heat weld, or stitching. The system may include an automated control system operably configured to cause a change in state of the blind from a retracted state to a protective deployed state, which may include a sensing system operably configured to detect a threatening event, wherein the sensing system upon sensing the threatening event triggers the blind to transition from the retracted state to the deployed protective state such that in the protective state, the blinds are adapted to be resistant to penetration by high-speed ballistic objects such as bullets.

Methods and apparatus are provided for a removable ballistic resistant windshield for vehicle egress. The windshield includes a ballistic resistant glass panel in a rectangular windshield frame with a perimeter portion configured to fit within a rectangular opening in a vehicle cab. The windshield frame may further include an exterior flange configured to overlay an outside surface of the opening in the vehicle cab, and an interior flange extending from the windshield frame opposite the exterior flange. The exterior and interior flanges define an open channel on a first side of the windshield frame configured to fit around a vertical portion of the opening in the vehicle cab when the windshield is seated in the opening. A spring-loaded latch on the windshield frame is operable from inside the vehicle cab to release a second, opposite side of the windshield frame from the opening in the vehicle cab.

A system for mitigating an impact force is provided. The system a helmet having a face mask attached thereto, and the face mask includes a first portion; and a second portion. The first portion and the second portion are separated by a gap and held together via a biasing member. A force received by the first portion is at least partially transferred to the second portion via the biasing member, wherein a fraction of the transferred force is returned to the first portion, the fraction being less than the force received.

A system for mitigating an impact force is provided. The system a helmet having a face mask attached thereto, and the face mask includes a first portion; and a second portion. The first portion and the second portion are separated by a gap and held together via a biasing member. A force received by the first portion is at least partially transferred to the second portion via the biasing member, wherein a fraction of the transferred force is returned to the first portion, the fraction being less than the force received.

An armored window drive mechanism includes a window unit containing a bullet resistant glass, composite or polymeric material window positioned within a window frame of a vehicle. A motorized window mechanism is connected to a door structure of the vehicle and acts to raise or lower the window unit. A mechanism connector is adapted to convert an axial rotational force generated by the window mechanism to a lifting and a lowering force acting directly at a lower face of the window frame.

An Anti-Ballistic Panel having a first structural layer, a second structural layer, a first Anti-Ballistic layer disposed between the first structural layer and the second structural layer; and an elastomeric layer disposed between the first structural layer and the Anti-Ballistic layer is described. Applications of the Anti-Ballistic Panel are also described.

A patrol vehicle protection system with a quick release bullet resistant transparent panel system that requires no permanent modifications to the patrol vehicle, offers head impact safety protection, and may be used as a handheld protective shield. The system includes a bullet resistant transparent panel that temporarily attaches to a mounting mechanism mounted inside the door window opening. The mechanism includes upper and lower brackets that engage the window tracks around the door window opening. An optional vertical brace may be used to hold the brackets in place. The transparent panel is securely held between the two brackets with magnets that allow release of the panel in a side impact collision. The system includes at lateral force generating device mounted to a bracket that is activated when a side impact is detected forcing the transparent panel outward. The system also includes a quick release handle configured to be selectively attached to the transparent panel enabling to be removed and used as a protective shield.

Vehicle window security shield assemblies and related methods of use and/or installation. In some embodiments, an insert-shield assembly may comprise an insert-shield with or without a separate inner shield, one or both of which may comprise a ballistic-rated, transparent material. The assembly may be mounted in and/or to one or more existing windows or other openings of a vehicle. In some embodiments, an inner shield of the shield assembly may be removeable from the assembly. In some embodiments, the entire assembly or a portion thereof may be removed to allow an officer or other user to use the removed portion as a portable shield. The removed portion may be returned to the vehicle following use to enhance the protection of the vehicle.

A stile and rail ballistic security door containing bullet proof materials within a metal or synthetic material frame including a plurality of window panes and thermal break means to eliminate condensation problems therein. The door contains a multi-layer exterior core providing extra strength and rigidity.