Muzzle loading rifle with breech plug having gas seal facility

Details Muzzle loading rifle with breech plug having gas seal facility Muzzle loading rifle with breech plug having gas seal facility

2006-01-17

2010-10-19

Johnson, Stephen M (Department: 3641)

Firearms

Muzzle loaders

C089S001300, C089S019000, C089S026000

Reexamination Certificate

active

07814694

ABSTRACT:
A muzzle loading firearm has a barrel with a bore on a bore axis, and the barrel has a muzzle end and a breech end. A frame is connected to the barrel, and has a breech face. The frame moves between an open position in which the breech face is away from the breech end of the barrel, and a closed position in which the breech face abuts the breech end of the barrel. A breech plug is removably attached to the barrel. The breech plug including a seal element closely received by the bore. The seal element may be a set of piston rings that are received in a circumferential groove about a forward end of the plug, or may be a cup at the forward end, with a forward rim that flares under pressure to provide a gas seal.

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