US 12,085,370 B2
Bullet
Aki Suvilahti, Espoo (FI); Lasse Levula, Riihimäki (FI); Petteri Roivas, Tampere (FI); Aleksi Mannila, Helsinki (FI); and Jarno Taupila, Hyvinkää (FI)
Assigned to Sako Oy, Riihimäki (FI)
Appl. No. 17/801,789
Filed by Sako Oy, Riihimäki (FI)
PCT Filed Jan. 27, 2021, PCT No. PCT/FI2021/050050
§ 371(c)(1), (2) Date Aug. 23, 2022,
PCT Pub. No. WO2021/170899, PCT Pub. Date Sep. 2, 2021.
Claims priority of application No. 20205207 (FI), filed on Feb. 28, 2020.
Prior Publication US 2023/0093842 A1, Mar. 30, 2023
Int. Cl. F42B 12/74 (2006.01); F42B 12/34 (2006.01)
CPC F42B 12/74 (2013.01) [F42B 12/34 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A bullet, which comprises a bullet body and a bullet tip, which bullet body of the bullet is a solid body bullet body and made of lead-free metal,
which bullet tip of the bullet is made of polymer material, advantageously of POM (polyoxymethylene), which bullet tip of the bullet comprises a tip end part, tip end grooves and a tip end central bridge, wherein
the bullet body of the bullet comprises an inner central opening with inner grooves located radially spaced apart at the circumference of the inner central opening,
the bullet tip is located in the inner central opening of the bullet body such, that the tip end part of the bullet tip is outside the bullet body,
the inner grooves extend a distance in the bullet body, which distance is shorter than the depth of the central opening and the distance is three times the diameter of the central opening, and
the inner grooves have a tapered-like cross section with a rounded end and the tapering angle is 40-50° and the roundup is 0.1-0.3 mm.