Abstract: Bar armor currently provides a means of providing partial protection of vehicles and structures against certain types of Rocket Propelled Grenades (RPGs). However, the individual bars must provide enough strength to cut through or deform the outer ogive of an RPG and cause electrical contact with the inner ogive. This in turn imposes constraints on the overall effectiveness of the system and how light it can be made. These constraints can be eased by providing cross-attachments for the bars, provided that the cross-attachments themselves are mutually supporting and of low enough density and sufficient frangibility to avoid detonating the RPG when they are struck by the RPG nosepiece, which contains a piezoelectric element that causes the fuse of the RPG to function. Through this means, bar armor can be made lighter, more effective, and easier to see through.

Abstract: Bar armor currently provides a means of providing partial protection of vehicles and structures against certain types of Rocket Propelled Grenades (RPGs). However, the individual bars must provide enough strength to cut through or deform the outer ogive of an RPG and cause electrical contact with the inner ogive. This in turn imposes constraints on the overall effectiveness of the system and how light it can be made. These constraints can be eased by providing cross-attachments for the bars, provided that the cross-attachments themselves are of low enough density and sufficient frangibility to avoid detonating the RPG when they are struck by the RPG nosepiece, which contains a piezoelectric element that causes the fuse of the RPG to function. Through this means, bar armor can be made lighter, more effective, and easier to see through.

Abstract: An outrigger edge enhances ability to turn and maintain control of a ski or snowboard on ice or snow. The outrigger edge is provided outside and above the normal edge of a ski so it only makes contact with the snow or ice when the ski is tilted through a sufficient angle with respect to the surface of the snow or ice. The angle is preferably in the range from about 30 to about 60 degrees, more preferably around 45 degrees, to reduce or avoid contact during skiing on flat terrain but to allow contact when needed on ice.

Abstract: An outrigger edge enhances ability to turn and maintain control of a ski or snowboard on ice or snow. The outrigger edge is provided outside and above the normal edge of a ski so it only makes contact with the snow or ice when the ski is tilted through a sufficient angle with respect to the surface of the snow or ice. The angle is preferably in the range from about 30 to about 60 degrees, more preferably around 45 degrees, to reduce or avoid contact during skiing on flat terrain but to allow contact when needed on ice.