Abstract: In a military vehicle having an upright fuel tank, an improved hollow panel ontaining pressurized fire-suppressant, the panel being located so that the suppressant sprays through an opening formed in the panel by an enemy projectile after its passage through the fuel tank. The hollow panel is reinforced against premature bursting forces by the provision of internal partitions running parallel to the major axis of the panel; the major walls of the panel are curved or bowed parallel to the minor axis of the panel to further reinforce the panel against premature bursting.

Abstract: Artillery weapon equilibrator assemblies comprising a plurality of coaxia aligned springs, the individual load response rate of which is programmed so that the cumulative load response rate of the plurality of springs simulates a curvilinear force supply curve corresponding substantially to the curvilinear load demand curve of the weapon's tipping parts which includes the gun tube to compensate for force load changes caused by variations in the position of the center of mass of the tipping parts at any degree of elevation throughout the full range of elevation and depression of the tipping parts.

Abstract: It is known to equip military vehicles with acutely angled louvers or slats ounted outboard of the vehicle walls to intercept enemy projectiles before such projectiles reach the vehicle; the louvers are desirably formed of hardened material to exert a fragmentization force on the projectiles. Under the present invention the louvers are specially connected and mounted to reduce weight without sacrificing ballistic effectiveness.

Abstract: A worm-wheel assembly wherein anti-friction balls are recirculated through elical grooves in the worm to increase the efficiency of the driving operation. This driving system is believed to have the advantages of good distribution of load forces, smooth and silent operation, very great speed reduction, high force transmission efficiency, and long service life.

Abstract: Apparatus to remove dust particles accumulating within the air cleaner of a ehicle engine, particularly an off-the-road vehicle of the military type. The apparatus includes a nozzle arranged to traverse the surface of the filter element within the cleaner, said nozzle being effective to blow or draw air through the pores of the filter element, thereby dislodging dust particles located on or in the filter element. The nozzle and filter element rotate relative to one another, whereby the nozzle traverses the entire peripheral dimension of the element; additionally the nozzle opening can be arranged to move in the direction of the filter element axis. By means of the combined axial and rotary movements the nozzle cleans the entire surface of the filter element.