초록 ▼

Anti-bounce apparatus for an automatic cannon reciprocating bolt assembly which includes a bolt, a bolt carrier and bolt mounted locking lugs, comprises means defining engagement surfaces contoured for enabling the forward moving carrier to cam the lugs into bolt locking relationship with a cannon b

Anti-bounce apparatus for an automatic cannon reciprocating bolt assembly which includes a bolt, a bolt carrier and bolt mounted locking lugs, comprises means defining engagement surfaces contoured for enabling the forward moving carrier to cam the lugs into bolt locking relationship with a cannon breech at increasing velocity, without bouncing, carrier energy loss being thereby minimized and firing of a chambered shell by a carrier mounted firing pin being assured. Further comprising the anti-bounce apparatus is a plurality of inertially actuated locking collets connected to the bolt carrier for causing, responsive to impact of the carrier with the breech at the instant of firing, frictional locking between the carrier and portions of the cannon fixed to the breech, rearward bouncing of the carrier relative to the locking lugs, with consequent premature or erratic bolt unlocking, being thereby prevented.

대표청구항 ▼

For an automatic cannon having a breech and a bolt assembly mounted for axially reciprocating movement to and from the breech, the bolt assembly including a bolt and a bolt carrier mounted thereto for relative axial movement therewith, bolt assembly anti-bounce apparatus, which comprises: bolt-to-br

For an automatic cannon having a breech and a bolt assembly mounted for axially reciprocating movement to and from the breech, the bolt assembly including a bolt and a bolt carrier mounted thereto for relative axial movement therewith, bolt assembly anti-bounce apparatus, which comprises: bolt-to-breech locking means including at least one locking lug pivotally mounted to the bolt, means defining a corresponding recess in the breech for receiving a locking portion of the locking lug, means defining portions of the bolt carrier for engaging corresponding portions of the locking lug to cam the locking portions thereof outwardly into the breech recess in response to continued forward movement of the bolt carrier after the bolt has impacted the breech, and means defining mating engagement surfaces on said bolt carrier and locking lug portions, said engagement surfaces being shaped to cause said bolt carrier and locking lug to maintain engagement during said camming outwardly of the locking portions; a member connected to the bolt carrier for reciprocating movement therewith; frictional locking means disposed, when the bolt carrier is proximate to the breech, between said member and portions of the cannon fixed to the breech; and, inertial means, responsive to forward impact by the bolt carrier with the breech, for causing the frictional locking means to instantaneously lock said member to said portions of the cannon fixed to the breech.