Cartridge case flash hole finishing tool
US5066174A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 3, 1990 |
| Grant date | Nov 19, 1991 |
| Priority date | — |
| Expiry date | May 3, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/8925
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A tool for finishing the aperture in the base of a cartridge case. The typical cartridge case has a cylindrical neck and the aperture is located on the axis that extends from the cylindrical neck. A pilot is provided on the shank of an aperture cutting tool coaxial with a cutter on the tool. A limit stop is provided above the pilot and the combination is adjustable and lockable at a desired position on the shank. The combination pilot and limit stop is positioned relative to the cutter so that as the pilot enters the neck, the cutter is guided into the aperture. The stop limit provides the exact amount of cutter entry for removing burrs but without enlarging the aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.