US 12,313,360 B2
Suppressor for a firearm
Harri Sjögren, Hietanen (FI)
Assigned to SILENT STEEL OY, Hietanen (FI)
Appl. No. 18/248,480
Filed by SILENT STEEL OY, Hietanen (FI)
PCT Filed Oct. 15, 2021, PCT No. PCT/FI2021/050687
§ 371(c)(1), (2) Date Apr. 10, 2023,
PCT Pub. No. WO2022/079358, PCT Pub. Date Apr. 21, 2022.
Claims priority of application No. 20206017 (FI), filed on Oct. 15, 2020.
Prior Publication US 2023/0392893 A1, Dec. 7, 2023
Int. Cl. F41A 21/30 (2006.01)
CPC F41A 21/30 (2013.01) 15 Claims
OG exemplary drawing
 
1. A suppressor for a firearm, comprising
a first end comprising a bullet entry opening,
an outer casing,
a baffle element comprising a bullet passageway,
a bullet channel for a propagation of a bullet,
expansion chambers for a cooling of gas, and
a second end comprising a bullet exit opening and at least one gas exhaust opening,
which suppressor is adapted to direct a propellant gas discharged from the firearm out of the suppressor through the at least one gas exhaust opening at least the second end, and
which first end, outer casing, and second end define the expansion chambers so that a first expansion chamber is formed between the first end and the baffle element, and the bullet channel and a second expansion chamber are formed between the baffle element and the second end,
wherein the baffle element is adapted to direct, through a space between the baffle element and outer casing, a portion of the propellant gas discharged from the firearm into the second expansion chamber, onto an inner surface of the outer casing to cool the propellant gas so that the cooled propellant gas can flow out of the suppressor via the at least one exhaust opening and the bullet channel in connection with the exit opening, and
wherein a surface structure of the baffle element facing the first expansion chamber is a turbine-like surface structure, which is adapted to cause at least the portion of the propellant gas discharged into the first expansion chamber and impinging on the surface structure to move along the inner surface of the outer casing in a circulatory flowing motion to enhance cooling in the second expansion chamber.