Firearm bolt
AssigneeRemington Arms Company, Inc.
InventorsMarlin R. Jiranek, II, Michael D. Keeney
Life of this patent
Estimating the term…
Abstract
A firearm bolt prepared from an alloy of tungsten, nickel and iron having a density of about from 14.1 g/cc to 18.0 g/cc. The alloy preferably also contains at least one of molybdenum, cobalt, rhenium, tantalum and gold. The alloy is preferably manufactured by standard powder metallurgical techniques followed by a liquid phase sinter and vacuum anneal. The bolt can also be manufactured using solid state sintering. The bolt can also be manufactured by mechanically working the material after sintering, after annealing, or after both sintering and annealing.
Claims16
A firearm bolt end comprising, elementally, in parts by weight, about from 70 to 98% tungsten, the balance comprising nickel and iron, wherein the ratio of nickel to iron is about from 1.5:1 to 5:1, the bolt further comprising up to about 20% by weight of at least one metal selected from the group consisting of molybdenum, cobalt, rhenium, tantalum and gold.
A firearm bolt comprising tungsten, nickel, and iron in weight percentages to yield a density in a sintered form of about from 14.1 g/cc to 18.0 g/cc.
A process for manufacturing a firearm bolt comprising the steps of:
- admixing about from 70 to 98% by weight tungsten, the balance comprising nickel and iron, wherein the ratio of nickel to iron is about from 1.5:1 to 5:1, to form a powder metal mixture;
- pressing the powder metal mixture to form a green bolt blank compact;
- sintering the green bolt blank compact to form a sintered bolt blank;
- and
- finishing the sintered bolt blank to form a finished firearm bolt.
Dependencies are inferred from the claim text.