Patent ID: 6314670
Filing Date: 2001-11-13
Classification: F41C

Abstract:
A muzzle loader firearm comprising:a gun barrel having a breech end and a muzzle end, the breech end of the gun barrel supporting a removable breech plug having a primer cavity for supporting a desired primer for discharging the firearm, and the primer cavity communicating with an interior space of the breech end of the gun barrel via an ignition bore to facilitate discharge of the firearm when desired;the primer having a sufficiently tight fit with the primer cavity so that upon detonation of the primer, an exterior casing of the primer expands to form a fluid tight seal with an inwardly facing surface of the primer cavity to minimize the passage of any gas therebetween, upon discharge of the firearm;a firing pin assembly being provided for striking the primer, when desired, and discharging the firearm;a trigger mechanism being coupled to the firing pin assembly to control actuation thereof;a stock supporting at least the trigger mechanism, the firing pin assembly and the breech end of the gun barrel;said firearm having a sufficiently small head space, being provided between a striking surface of the primer facing the firing pin assembly and an adjacent surface of the firing pin assembly, to prevent the primer from being forced sufficiently rearwardly, upon detonation of the primer, and compromising the fluid tight seal formed between the primer casing and the primer cavity;the primer cavity communicates with the ignition bore via an oxygen recess which is sized to accommodate a sufficient quantity of oxygen to facilitate burning of a primer charge of the primer and facilitate substantially complete burning of gun powder loaded within the breach end of the barrel; andsaid ignition bore is substantially smaller than both said primer cavity and said oxygen recess, a tapered transition interconnects the oxygen recess with the ignition bore, and the tapered transition funnels the blast from the discharged primer through the ignition bore directly into gun powder supported by the breech end of the barrel to facilitate a complete and substantially instantaneous burning of the gun powder located therein.