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US 11,933,593 B2Granted
Biodegradable shotshell components
AssigneeFederal Cartridge Company
InventorsAlex R. Schmieg, Robert A. Strange, Anthony C. Stockey, Steven P. Schommer, Adam J. Moser
Life of this patent
Estimating the term…
Abstract
Devices and methods for shotshell cartridges, particularly shotshell cartridges with biodegradable components. One or more of the casing, shot wad, spacer, and powder wad may be formed of biodegradable materials. A biodegradable shot wad is manufactured of cellulosic fibers and wax to provide obturation and gas seal properties at high pressures with high reliability.
Claims20
A shotgun shell cartridge comprising:
- a casing comprising a primer;
- a shot wad positioned in the casing;
- a biodegradable fiber powder wad comprising wax evenly distributed through a cellulosic fiber located inside the casing, rearward of the shot wad, the biodegradable fiber powder wad having an annular depression in a rearward-facing axial end and a ring located radially outward from the annular depression;
- wherein the wax comprises a first wax and a second wax, the first wax and second wax being comprised of different materials;
- and
- a propellant in the casing rearward of the biodegradable fiber powder wad.
3 more elements
A shotgun shell cartridge comprising:
- a casing comprising a primer;
- a shot wad positioned in the casing;
- a biodegradable spacer comprising corn byproduct, the spacer being located within a rearward portion of the shot wad;
- a biodegradable fiber powder wad comprising wax evenly distributed through a cellulosic fiber located inside the casing, rearward of the shot wad, the biodegradable fiber powder wad having an annular depression in a rearward-facing axial end and a ring located radially outward from the annular depression;
- and
- a propellant housed in the casing, rearward of the fiber powder wad.
3 more elements
A shotgun shell cartridge comprising:
- a casing comprising a primer;
- a shot wad positioned in the casing;
- a biodegradable spacer comprising corn byproduct, the spacer being located within a rearward portion of the shot wad;
- a biodegradable fiber powder wad comprising wax evenly distributed through a cellulosic fiber located inside the casing, rearward of the shot wad, the biodegradable fiber powder wad having an annular depression in a rearward-facing axial end and a ring located radially outward from the annular depression;
- the biodegradable fiber powder wad comprising at least 40% cellulosic fiber by weight;
- and
- a propellant housed in the casing, rearward of the fiber powder wad.
4 more elements
Dependencies are inferred from the claim text.