Patent ID: 8333153

Claim:
A launching device for a sub-caliber artillery projectile, said launching device comprising: a base that incorporates a sliding band at the periphery of a projectile, said base containing a rear part of said projectile and incorporating a thrust surface cooperating with a matching surface at the rear of said projectile; at least two cylinder sectors surrounding said projectile to ensure guidance by means of exterior ring-shaped support bands, said sectors being in contact by at least one interior support shape with said projectile; and said cylinder sectors including: at least one hinge materializing an instantaneous axis, said hinge being detachable during flight, said hinge linking said base to one of said cylinder sectors, said hinge including: at least one notch on said base, said notch being delimited to the fore by a plane inclined surface and to the rear by a stop surface perpendicular to the longitudinal axis of said projectile, and at least one tooth linked to one of said sectors, wherein said notch cooperating with a matching support surface on said tooth, an edge of said tooth being in contact with said stop surface and constituting said instantaneous axis, said tooth and said notch having a geometry such that said tooth pivots when one of said sectors opens around said instantaneous axis without interfering with said inclined surface.