Abstract: A vehicle designed to survive mines exploding underneath it has an impact absorbing seat assembly for holding a human occupant of the vehicle. The assembly includes a seat having lower and upper seat members and includes a mechanism connected to the floor and the seat for absorbing the impact of the vehicle floor's buckling upward due to a mine blast. A plate is connected to the lower seat member just behind the legs of the occupant, and the plate swings on a hinge mounted to the lower seat member. In its normal position, the plate forms an acute angle with the floor and a lip of the plate contacts the floor such that the lip curves away from the seat. When the floor buckles upward, the plate swings outward relative to the seat, carrying the occupant's legs with it, thereby avoiding a vertical load transferring from the floor up the occupant's legs to the occupant's knees.

Abstract: A vehicle designed to survive mines exploding underneath it has an impact absorbing seat assembly for holding a human occupant of the vehicle. The assembly includes a seat having lower and upper seat members and includes a mechanism connected to the floor and the seat for absorbing the impact of the vehicle floor's buckling upward due to a mine blast. A plate is connected to the lower seat member just behind the legs of the occupant, and the plate swings on a hinge mounted to the lower seat member. In its normal position, the plate forms an acute angle with the floor and a lip of the plate contacts the floor such that the lip curves away from the seat. When the floor buckles upward, the plate swings outward relative to the seat, carrying the occupant's legs with it, thereby avoiding a vertical load transferring from the floor up the occupant's legs to the occupant's knees.

Abstract: Disclosed is a launch element seater for repeatably placing projectiles or ther launch package elements at an exact location within a breech of a gun. The seater includes a tube closely fit and slidable in the breech and a plate for precisely locating the tube on the breech, the plate encircling the tube and opposing a reference surface on the breech. An internally threaded terminus of the tube threads with a rod entering the tube, and the rod joins a seat member fit closely and slidably in the breech. A positionable set nut threaded on the rod outside the tube locates the innermost position of the rod relative to the tube and thereby locates the seat member and a projectile engaged thereto within the breech.

Abstract: A testing implement that can be electrically connected to a test-alarm pa in a vehicle fire-suppression system for verifying the integrity of the panel circuitry. The testing implement can be used with the test-alarm panel installed in a vehicle or outside the vehicle (i.e., bench testing). The implement can also be used to test the integrity of electrical cables used in the fire-suppression system.