Method of shaping a muzzle-loading firearm barrel
US5974641A · kind A · utility
1Cited by
7References
1Claims
0Family size
Inventor
Key dates
| Filing date | Jun 14, 1993 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Jun 14, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/303808
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A firearm barrel having a barrel bore in a barrel bore entrance end is arranged to receive a conical milling tool directed to shape the conical entrance into the barrel bore entrance end, with a counter-bore drill followed by a second conical milling tool directing an annular seat at an interface of the counter-bore and the conical bore to receive a load tool cylinder onto the seat for ease of directing a charge into the barrel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.