Gun attachment
AssigneeOrdnance Developments Limited
InventorCraig Anderson Bamber
Life of this patent
Estimating the term…
Abstract
A blank firing attachment for a recoil operated gun. The attachment comprises a barrel (10) having in its length an external shoulder (12). A gas cylinder in the form of a sleeve (13) is slidingly fitted onto the barrel (10) and located over the external shoulder (12). An internal shoulder (14) of the sleeve is located opposite the external shoulder (12) such that the shoulders (12 and 14) together with the surface of the barrel (10) and the sleeve (13) form a gas chamber (24). At least one gas transfer passage (11) connects the gas chamber (24) to the bore (10′) of the barrel (10). A mounting flange (15) with fastenings (19) and locking lugs (20) fix the gas cylinder (13) to a receiver section (23) of a gun.
Claims26
A blank firing attachment for a recoil operated gun, the attachment comprising a barrel with an internal bore, the barrel having in its length an external shoulder, a gas cylinder in the form of a sleeve slidingly fitted onto the barrel and located over the external shoulder, the sleeve incorporating an internal shoulder which is located opposite and spaced from said external shoulder, a gas chamber formed by said sleeve, internal shoulder, external shoulder and surface of the barrel, at least one gas transfer passage in the barrel connecting said gas chamber to the internal bore, and a fixing device having anchors which are engageable with a receiver section of a gun to fix the gas cylinder to the gun.
A blank firing attachment for a recoil operated gun, the attachment comprising a barrel with an internal bore, the barrel having in its length an external shoulder, a gas cylinder in the form of a sleeve slidingly fitted onto the barrel and located over the external shoulder, the sleeve incorporating an internal shoulder which is located opposite and spaced from said external shoulder, a gas chamber formed by said sleeve, internal shoulder, external shoulder and surface of the barrel, at least one gas transfer passage in the barrel connecting said gas chamber to the internal bore, a fixing device having anchors which are engageable with a receiver section of a gun to fix the gas cylinder to the gun, and a gas restrictor device mountable at a muzzle end of the gun barrel,
- wherein the gas restrictor includes a pair of counter bores at the muzzle end of the barrel and a restrictor plug screw threaded into one of said counterbores, the restrictor plug having a portion which locates in the other of said counterbores, the restrictor plug having a passageway coaxial with the bore of the barrel, at least one transfer port leading from the passageway communicating with a relief hole in the barrel.
A blank firing attachment for a recoil operated gun, the attachment comprising:
- a barrel with an internal bore and an external surface that has an annular shoulder spaced from an end of said barrel;
- a sleeve slidingly arranged on said barrel over said annular shoulder, said sleeve having an internal shoulder opposite said annular shoulder;
- a gas chamber defined by said internal shoulder, said annular shoulder, said external surface of said barrel, and an internal surface of said sleeve;
- a gas transfer passage extending transversely through said barrel from said internal bore to said external surface of said barrel that defines said gas chamber;
- and
- anchors that are adapted to attach said sleeve to a receiver section of a gun.
Dependencies are inferred from the claim text.