Armor steel products and method for making same
US9671199B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 2014 |
| Grant date | Jun 6, 2017 |
| Priority date | — |
| Expiry date | Mar 30, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41H5/045
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for making steel armor products for use, for example as body armor. The steel armor product made has a compound curve and is made from a flat blank of armor steel by high-temperature annealing an armor steel blank to slightly above its austenitizing temperature, then followed by a slow, temperature-controlled cooling it, over-pressing the annealed blank to a first configuration so it springs back to a second configuration approximating the desired product shape when released from the press, and then heat-treating the product back to its austenitizing temperature, quenching it, and tempering it at a low temperature. The tool is conveniently made by lamination, using a series of thin plates of tool steel each cut to produce an approximation of the desired die.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.