Abstract: A ball turret includes a turret shell having a rear portion and a front portion. The rear portion and the front portion are assembled to form the turret shell. The shell includes a block assembly configured to mount to a mounting element of a weapon system, and a yoke carriage assembly configured to receive and mount to the block assembly. A number of guide rods within the turret shell are configured to mount the yoke carriage assembly thereto and to provide a recoil shock absorber in response to a discharge of the weapon system. The yoke carriage assembly is releasably mounted to the block assembly.

Abstract: A ball turret includes a turret shell having a rear portion and a front portion. The rear portion and the front portion are assembled to form the turret shell. The shell includes a block assembly configured to mount to a mounting element of a weapon system, and a yoke carriage assembly configured to receive and mount to the block assembly. A number of guide rods within the turret shell are configured to mount the yoke carriage assembly thereto and to provide a recoil shock absorber in response to a discharge of the weapon system. The yoke carriage assembly is releasably mounted to the block assembly.

Abstract: Acoustical voice-feedback systems include headsets connected through a connector or central hub for vocalizing and sound formation assistance. A user's voice is conveyed directly into his or her own ear as well as the ears of each connected user. A central hub allows selective connection of one or more headsets to each other, or allows an instructor to selectively connect an instructor headset to one or more instructee headsets.

Abstract: Acoustical voice-feedback systems include headsets connected through a connector or central hub for vocalizing and sound formation assistance. A user's voice is conveyed directly into his or her own ear as well as the ears of each connected user. A central hub allows selective connection of one or more headsets to each other, or allows an instructor to selectively connect an instructor headset to one or more instructee headsets.

Abstract: A photothermographic element comprising a support bearing an image forming system comprising:(a) a photosensitive silver halide(b) an organic silver compound(c) a polymer binder and(d) a reducing agent for the organic silver compound, characterized in that the reducing agent comprises a redox-dye-releasing compound of the general formula: ##STR1## in which: R represents an organic group which may be oxidatively cleaved to a thermally immobile form,A represents a bond or a divalent linking group having a chain consisting of up to 12 atoms, which is linked to the carbonyl group via a carbon atom or an oxygen atom, andD represents the chromophore of a thermally mobile dye.

Abstract: A photothermographic element comprising a substrate having coated thereon a photothermographic medium comprising a binder having dispersed therein an organic silver salt or complex, a photocatalyst and a reducing agent, characterized in that the photothermographic medium contains as an antifoggant, in the absence of mercury compounds, an effective antifogging amount of a compound of the general formula: ##STR1## characterized in that: X.sup.1 and X.sup.2 independently represent halogen atoms,X.sup.3 represents a halogen atom or an electron withdrawing substituent, andZ represents the necessary atoms to complete a ring system which may comprise a single ring or a fused ring system which rings may bear substituents.