US 6,606,934 B1Granted

Ergonomic gas operated gun barrel and method of shortening a gas operated gun

AssigneeRinky-Dink Systems, Inc.

InventorsMichael B. Rock, James E. Ribordy

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Abstract

Presented is a gas operated, semi-automatic rifle having a shortened barrel. For actuating a receiver to provide the semi-automatic feature, the rifle has a gas system including a gas cylinder assembly attached to the barrel at a second angular position relative to the barrel. For linking the gas cylinder assembly with the receiver, an operating rod is provided having a charging arm engaging the receiver and a distal end located at a first angular position relative to the barrel. The gas cylinder assembly and the distal end are hence coextensive to each other, eliminating the length of the barrel otherwise necessary to position the gas cylinder assembly and the distal end in a linear relationship. To provide for interaction between the gas cylinder assembly and the operating rod, an abutment block is attached to the operating rod and positioned at the second angular location.

Claims17

Dependent claims

A gas operated gun, comprising:

a receiver;
a bolt slidable within the receiver;
an elongated barrel mounted to the receiver, the barrel defining a bore extending forwardly from the receiver along a longitudinal axis toward a discharge end;
an operating rod including a charging handle portion and a guide rod portion, the operating rod movable relative to the bolt and the barrel to actuate the bolt, the charging handle portion including a manual operator lever, the guide rod portion disposed at a first angular position relative to the longitudinal axis and extending forwardly toward a distal end;
a spring supported by the receiver urging the operating rod toward the discharge end of the barrel;
a gas cylinder assembly including a housing and a piston, the housing including an internal piston chamber and a fluid passageway in fluid communication with the bore, the piston being reciprocally movable within the internal piston chamber;
a contact interface between the operating rod and the piston at an intermediate position between the operator lever and the distal end, the contact interface being disposed at a second angular position angularly offset from said first angular position of the guide rod portion.

4 more elements

Dependencies are inferred from the claim text.