Reduced drag projectiles
US11378368B2 · kind B2 · utility
2Cited by
15References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2020 |
| Grant date | Jul 5, 2022 |
| Priority date | — |
| Expiry date | Jun 12, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42B12/74
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A cartridge comprising an elongate rifle bullet with a plurality of circumferential grooves having overmolded polymer therein defining embedded polymer rings. The cartridge further having a case and propellant. The polymer rings have an outer surface that is flush with, that is, conforming to the outer surface of the body. The polymer may have be selected to have a favorable coefficient of friction with respect to the barrel. The bands offering reduction of the metal to metal contact between the bullet and the barrel while not diminishing the ballistic coefficient of the bullet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.