Suppressor with reduced gas back flow
AssigneeSig Sauer, Inc.
InventorKrzysztof J. Kras
Life of this patent
Estimating the term…
Abstract
A suppressor for a firearm includes a baffle stack having an outer surface, the baffle stack comprising a plurality of baffles that define an inner chamber extending along a central axis of the baffle stack and a projectile pathway through the baffle stack along the central axis. An outer housing is around the baffle stack and has an inner surface separated from and confronting the outer surface of the baffle stack. An outer chamber is defined between the inner surface of the outer housing and the outer surface of the baffle stack. Flow-directing structures are in the outer chamber and are arranged to direct gases into or out of the inner chamber.
Claims20
A suppressor comprising:
- a hollow tubular housing extending longitudinally along a central axis from a proximal end to a distal end;
- a baffle stack within the hollow tubular housing and extending along the central axis from a proximal baffle stack end to a distal baffle stack end, the baffle stack comprising an annular baffle wall and a plurality of baffle cones connected to an inside of the baffle wall, each of the baffle cones extending rearward to a central opening, wherein the baffle stack defines a projectile pathway along the bore axis, an inner volume inside of the annular baffle wall, and an outer volume between the annular baffle wall and the hollow tubular housing;
- and
- flow-directing structures in the outer volume, the flow-directing structures including pairs of converging vanes and pairs of diverging vanes;
- wherein the annular baffle wall defines inlet ports in an upper half of the annular baffle wall, the inlet ports positioned between pairs of converging vanes;
- and
- wherein the annular baffle wall defines outlet ports in a lower half of the annular baffle wall, the outlet ports positioned between pairs of diverging vanes.
A suppressor comprising:
- a baffle stack having a cylindrical wall around an inner volume and extending along a central axis and a plurality of baffle cones connected to the cylindrical wall, individual baffle cones having a conical taper extending rearwardly to a central opening;
- an outer housing around the baffle stack, the outer housing having an inner surface spaced from and confronting the cylindrical wall, the inner surface of the outer housing and the outer surface of cylindrical wall defining an outer volume therebetween;
- a plurality of vanes in the outer volume, wherein the plurality of vanes includes pairs of diverging vanes and pairs of converging vanes with respect to gases flowing distally through the suppressor;
- and
- an end cap connected to a distal end of the outer housing, the end cap defining a central opening aligned with the central axis.
Dependencies are inferred from the claim text.