Smoke exhaust device for gun barrels

A smoke exhaust device for gun barrels, comprising:

• a hollow cylinder arranged around the gun barrel and connected to the gun barrel in a gas tight manner;
• a blow-off bore extending obliquely with respect to a longitudinal axis of the gun barrel, said blow-off bore connecting a caliber bore of the gun barrel to the hollow cylinder;
• a valve bore arranged between the caliber bore of the gun barrel and the smoke exhaust device, said valve bore starting at said caliber bore of the gun barrel and including two oblique inlet openings extending in opposite directions in the shape of a Y, said inlet openings extending at a low angle with respect to said longitudinal axis of the gun barrel;
• and, check valve means for admitting gas under pressure to said valve bore, said check valve means comprising an assembly of layered leaf springs fastened at a center to said caliber bore and including a lower layered leaf spring in contact with an outer surface of said caliber bore having a dimension large enough for covering said inlet openings and including a plurality of additional leaf spring elements having dimensions smaller than said first leaf spring for extending over only a portion of said inlet openings.

A smoke exhaust device for gun barrels, comprising:

• a hollow cylinder arranged around the gun barrel and connected to the gun barrel in a gas tight manner;
• a blow-off bore extending obliquely to a longitudinal axis of the gun barrel, said blow-off bore connecting a caliber bore of the gun barrel to the hollow cylinder;
• a valve bore arranged between the caliber bore of the gun barrel and the smoke exhaust device, said valve bore starting at said caliber bore of the gun barrel and including two oblique inlet openings extending in opposite directions in the shape of a Y, said inlet openings extending at a low angle with respect to a longitudinal axis of the gun barrel to define an inlet opening region on an outer surface of said gun barrel, said inlet opening region having a dimension defined by said inlet openings;
• and, check valve means for admitting gas under pressure to the valve bore, said check valve comprising an assembly of layered leaf springs including a first leaf spring in contact with said gun barrel outer surface, said first leaf spring having a dimension larger than said inlet opening region for extending over each of said inlet openings, and a plurality of leaf springs each having a dimension smaller than said first leaf spring and being successively smaller in dimension than a leaf spring positioned immediately below.