초록 ▼

A hand guard removably mountable on the barrel of a firearm such as a rifle. The hand guard is formed in two complementary mating housing components joined in a vertical plane which contains the longitudinal axis of the barrel. The housing components together define a convection chamber which envelo

A hand guard removably mountable on the barrel of a firearm such as a rifle. The hand guard is formed in two complementary mating housing components joined in a vertical plane which contains the longitudinal axis of the barrel. The housing components together define a convection chamber which envelops a substantial length of the barrel of the firearm. The joined housing components are generally of pear-shaped cross section having a broadened, flattened bottom member and a narrow, tall chimney member. Heat from the barrel of the firearm creates convection currents in the convection chamber as cooling air is drawn through inlet ports in the bottom member, around the barrel, and out through exhaust ports in sidewalls of the chimney member. A heat shield is carried by each of the housing components and is positioned between the barrel and the outer housing.

대표청구항 ▼

A hand guard for the barrel of a firearm comprising: an elongated housing adapted to be mounted on the barrel for encapsulating a predetermined length of the barrel and defining a convection chamber therein; said housing having a longitudinal axis substantially aligned with the longitudinal axis of

A hand guard for the barrel of a firearm comprising: an elongated housing adapted to be mounted on the barrel for encapsulating a predetermined length of the barrel and defining a convection chamber therein; said housing having a longitudinal axis substantially aligned with the longitudinal axis of the barrel; said housing being generally of pear-shaped cross section having a broadened, flattened, bottom member, a narrow, tall chimney member with a pair of spaced substantially vertically disposed sidewalls, and a transversely extending bridge member joining said sidewalls, and opposed connecting members uniting said bottom member and said sidewalls; said housing having a plurality of longitudinally spaced inlet ports formed in said bottom member and a plurality of longitudinally spaced exhaust ports in each of said sidewalls; whereby heat from the barrel of the firearm creates convection currents in said convection chamber which draw ambient air into said convection chamber through the inlet ports, around the barrel, and out through the exhaust ports, thereby cooling the barrel and directing the heated air away from said bridge member.