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US 9,248,531 B2Granted
Annealing system for cartridge casings
AssigneeVista Outdoor Operations LLC
InventorJames Eveland
Life of this patent
Estimating the term…
Abstract
A portion of a work-hardened essentially tubular work piece such as a metallic firearm cartridge case is annealed by contact with solid or granular tooling material which has been heated to a temperature approximately that of the appropriate annealing temperature, thereby reducing the possibility of overheating the work piece, and also thereby permitting the annealing of only that portion of the work piece contacted or in close proximity to the point(s) of contact.
Claims13
A system for annealing a portion of a cartridge casing having an open mouth end and a closed head end, the system comprising:
- a heat transfer element having a plurality of shape adapting structures movable to approximate the shape and diameter of the portion of the casing to be annealed such that the heat transfer element substantially contacts the entire exterior of the portion of the casing to be annealed;
- and
- a heating element contacting the heat transfer element to heat the heat transfer element to a predetermined temperature.
Dependencies are inferred from the claim text.