Abstract: A recoil-mitigated projectile-firing device comprising a firing assembly, the firing assembly comprising the projectile-firing device secured within a tube and the recoil-mitigated projectile-firing device further comprising a brake assembly surrounding a portion of the tube. The brake assembly comprising at least one brake shoe supported within a frame and means for urging the at least one brake shoe against the outer surface of the tube. When the projectile-firing device is discharged, the firing assembly moves relative to the brake assembly and the frictional force mitigates the recoil.

Abstract: A recoil-mitigated projectile-firing device comprising a firing assembly, the firing assembly comprising the projectile-firing device secured within a tube and the recoil-mitigated projectile-firing device further comprising a brake assembly surrounding a portion of the tube. The brake assembly comprising at least one brake shoe supported within a frame and means for urging the at least one brake shoe against the outer surface of the tube. When the projectile-firing device is discharged, the firing assembly moves relative to the brake assembly and the frictional force mitigates the recoil.

Abstract: A powered scrub brush having a power head module, a brush head module, and n extension shaft module. The power head module includes a positive-displacement motor and a flow-control valve. The motor may be coupled directly to the brush head module or indirectly through one or more extension shaft modules. The power head module has a liquid discharge port that is connected to a liquid discharge tube on the extension shaft module that in turn is connected to a liquid sprayer having a nozzle on the brush head module. Mechanical power is transferred from the motor to the brush via an output shaft on the motor, a flexible shaft in the extension shaft module, and a shaft in the brush head module on which the brush is removably mounted. The powered scrub brush is manually operated by regulating a flow-control valve that is connected between a pressurized water source and an inlet port on the motor. As pressurized liquid flows through the motor, the brush will rotate and liquid will be discharged via the nozzle.

Abstract: A method, apparatus and system for the ultrasonic detection and evaluation of flaws in annular test objects including an arrangement of ultrasonic transducers that are rotated about the outer surface of the test object and provide an ultrasonic indication fo flaws in the object, and for electronically collecting, storing, and analyzing the flaw data gathered by the ultrasonic transducers, to further provide a predetermined objective indicia of acceptablility concerning the structural integrity of the test object.

Abstract: A diving suit is provided with neck and wrist opening seals each in the f of a right cylindrical annulus of open celled resilient foam rubber having a through passage a portion of which is cylindrical and a portion of which is frustoconical so that part of the annulus wall is of uniform thickness and part is tapered. The tapered portion overlies a conical, opening defining edge portion of the suit fabric and a band of non-stretch tape fixes the tapered edge portion of the annulus to the fabric while allowing the thicker wall portion to expand and contract as a head or hand is pushed through. The outer cylindrical surface beyond the tape is adapted to cooperate with a mask hood or glove cuff.

Abstract: Heat is used to decontaminate toxic agents from the interior contaminated rfaces of combat vehicles and like enclosures. The heat vaporizes the toxic agents, but does not cause heat damage to the interior contaminated surfaces themselves. Hoses are used to convey the heat to the toxic agent to vaporize the same, as well as to remove the vaporized toxic agent away from the interior contaminated surface for discharge outside the enclosure.