Patent ID: 11933574
Assignee: SAVAGE ARMS, INC.
Field: Other special machines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A semiautomatic shotgun, comprising:
a receiver defining a receiver interior;
a breech block positioned in the receiver interior, the breech block having an in-battery position and an open position;
a barrel attached to a forward portion of the receiver, the barrel having a barrel wall extending forwardly from the receiver, the barrel wall defining a barrel bore with a barrel axis;
a piston and piston cylinder positioned proximate the barrel and defining a piston chamber, the piston chamber fluidly connected to the barrel bore, the piston being operatively coupled to the breech block for selectively moving the breech block between the in-battery position and the open position; and
a pair of pressure regulators fluidly connected to the piston chamber, the pressure regulators allowing combustion gases to escape when an applied pressure is greater than a preselected relief pressure associated with the pair of pressure regulators;
wherein the breech block has a pair of legs extending forwardly and connecting to an annular slider slidingly positioned on a magazine tube, and wherein the piston is an annular piston extending about the magazine tube.