Patent ID: 8087337

Claim:
A recoil compensator and climb arrester ( 10 ) secured to the muzzle end ( 16 ) of a gun barrel ( 14 ), comprising: an axially-elongated hollow casing ( 18 ) extending between a rear end formed with muzzle-engaging formations ( 12 ) and a front end ( 73 ), said casing ( 18 ) further having a sidewall ( 40 ) having an inner surface ( 65 ) defining an interior duct, said sidewall ( 40 ) further having a radially spaced top and bottom as well as a pair of radially spaced sides; a plurality of baffles ( 61 - 63 ) having central apertures and fixed inside the duct longitudinally spaced apart from one another to partition the duct into a plurality of longitudinally-distributed gas-expansion chambers ( 31 - 33 ); wherein the plurality of baffles ( 61 - 63 ) are aligned such that the central apertures thereof define a central bore which is coaxial with the bore of the gun barrel ( 14 ); each baffle ( 61 - 63 ) having a convex rear surface ( 81 - 83 ) for deflection of gases, each convex rear surface ( 81 - 83 ) meeting the sidewall's ( 40 ) inner surface ( 65 ) in an endless crease ( 80 ); the sidewall ( 40 ) being formed with at least three ports ( 41 , 51 ; 42 , 52 ˜ 43 , 53 ) per expansion chamber ( 31 - 33 ) for exhaust of gases, and comprising at least one top port ( 51 - 53 ) in the top of the sidewall ( 40 ) as well as a pair of opposite side ports ( 41 - 40 ) in the spaced sides of the sidewall ( 40 ); each port ( 41 - 43 , 51 - 53 ) being angularly elongated in the sidewall ( 40 ) between angularly spaced closed-ends spacing an axially-spaced sill ( 84 - 85 ) and brow ( 90 ); the sidewall ( 40 ) being defined with at least three knee-wall portions ( 94 - 95 ) per chamber ( 31 - 33 ), each knee-wall portion ( 94 - 95 ) being defined on the side wall ( 40 ) as axially extending between the sill ( 84 , 85 ) of the respective port ( 41 - 43 , 51 - 53 ) and the axially forward crease ( 80 ); whereby the expansion of the gases of a muzzle blast in the expansion chambers ( 31 - 33 ) deflect in part off convex rear surfaces ( 81 - 83 ) of the baffles ( 61 - 63 ) and get checked in part by the knee-wall portions ( 94 - 95 ) of each port ( 41 - 43 , 51 - 53 ) ensuing the exhausting of the gases through ports ( 41 - 43 , 51 - 53 ) across the sills ( 84 - 85 ) thereof; wherein the plurality of chambers ( 31 - 33 ) progress from the rear end (˜ 12 ) of the casing ( 18 ) to the front end ( 73 ) between a first chamber ( 31 ) and a last chamber ( 33 ); correspondingly, for each of the top ports ( 51 - 53 ), the sill ( 85 ) and knee wall ( 95 ) angular and axial lengths, respectively, get progressively smaller from first chamber ( 31 ) to the last chamber ( 33 ).