Abstract: Embodiments of a jumper tube connection assembly generally include a retention clip having beveled and locking surfaces, a retention clip frame, and a biasing means, wherein the clip is restrained partially within the frame and is pivotable in response to a jumper connector contacting the beveled surface during shunt tube engagement therewith, and wherein the biasing means positions the locking surface to prevent jumper connector reverse movement. Other embodiments generally include a retention clip having a locking component, a retention clip support, and a biasing means, wherein the clip is restrained partially within the support and is pivotable in response to force biasing the locking component away from a shunt tube during jumper connector engagement therewith, wherein upon force cessation the biasing means positions the locking component in engagement with a jumper connector orifice, thereby preventing disengagement thereof from the shunt tube. Methods of utilizing the embodiments are also provided.

Abstract: Embodiments of a jumper tube connector assembly generally include a jumper tube, one or more fasteners affixed to and biased toward the exterior thereof, and two connectors slideable thereon, wherein each fastener is biased against a connector exterior, whereby upon slidably engaging each connector with a shunt tube, biases cease and a fastener end surface prevents connector backsliding. Embodiments of a jumper tube connection assembly generally include a retention clip having a locking surface, or a pin-locking retention clip having a pin, wherein the retention clip/pin-locking retention clip is affixed to a shunt tube, wherein upon slidably engaging a connector therewith, reverse axial connector movement is prevented by the locking surface/pin. Embodiments of a leak-off tube retention system generally include a leak-off tube having one or more spring-loaded buttons and adapted to releasably engage upper and lower retainer fittings via orifices therein. Methods of using these embodiments are also provided.

Abstract: A gun carrying case that comprises a pair of side panels that define a gun receiving compartment with one side of the panels defining an opening to the gun receiving compartment. The gun case includes a first locking device for locking a closure zipper in a closed condition, and a second locking device in the form of a metal cable trained in serpentine fashion between the side panels below the zipper for redundantly locking the side panels in a closed condition notwithstanding unauthorized opening or tampering with the zipper. The bottom of the gun receiving compartment is defined in part by a U-shaped bullet penetration resistant layer, and a gun is securable within the case with a muzzle pointed downwardly into the U-shaped layer for retaining any errant discharge that might occur from the gun while in the case.

Abstract: A gun case that facilitates safe handling of a gun to be contained therein. The gun case includes a pair of side walls with at least one of the side walls being formed with a ballistic resistant layer and one of the side walls being formed with a target indicia on an outer side thereof. During handling of the gun, the gun muzzle is held in close proximity to and pointed toward the target indicia such that an accidentally discharged bullet from the gun during handling will impact the ballistic resistant layer to prevent or minimize bodily injury or property damage.

Abstract: A vertical rotary shooting target having a stand with a horizontally extending axial which supports a rotary target structure. The vertical rotary target structure includes a hub rotatably mounted on the axial, a pair of target impact plates, and a support structure connecting the impact plates radially outwardly on diametrically opposed sides of the said hub and in horizontally spaced relation for enhanced shooting difficulty. Alternative embodiments of impact plate support structures are disclosed which minimize potentially harmful and damaging splashback of bullets striking the impact plates.

Abstract: A gun case that facilitates safe handling of a gun to be contained therein. The gun case includes a pair of side walls with at least one of the side walls being formed with a ballistic resistant layer and one of the side walls being formed with a target indicia on an outer side thereof. During handling of the gun, the gun muzzle is held in close proximity to and pointed toward the target indicia such that an accidentally discharged bullet from the gun during handling will impact the ballistic resistant layer to prevent or minimize bodily injury or property damage.

Abstract: A vertical rotary shooting target having a stand with a horizontally extending axial which supports a rotary target structure. The vertical rotary target structure includes a hub rotatably mounted on the axial, a pair of target impact plates, and a support structure connecting the impact plates radially outwardly on diametrically opposed sides of the said hub and in horizontally spaced relation for enhanced shooting difficulty. Alternative embodiments of impact plate support structures are disclosed which minimize potentially harmful and damaging splashback of bullets striking the impact plates.

Abstract: A continuous steel casting system having a mold into which molten steel of different grades may be successively introduced and from which a casting continuously emerges. A grade separator device is provided that is positionable into the mold inlet opening immediately following completion of the introduction of a first grade of molten steel and before the introduction of a second grade for forming a separating barrier between the first and second grades of molten steel and for enhancing cooling and solidification at the juncture between the first and second grades of molten steel.