GAP SEAL FOR PROJECTILE LAUNCHING DEVICE

摘要

A projectile launching device includes a barrel with a bore through the barrel, and a breach end opposite of a muzzle end. A feed mechanism, with a chamber to hold a projectile, is positioned at the breach end of the barrel. The feed mechanism is moveable between a first position with the chamber and the barrel unaligned, and a second position with the chamber and the barrel aligned. A receiver is positioned on an opposite side of the feed mechanism from the barrel. The receiver includes a gas duct to convey gas into the chamber to fire the projectile. A sleeve is slidingly coupled to the receiver and is adapted to forcibly slide into a position in contact with the feed mechanism, in response to pressure from the gas conveyed through the gas duct, to seal a first gap between the receiver and the feed mechanism.

主权项

1. A projectile launching device comprising:
a barrel with a bore through the barrel, and a breach end opposite of a muzzle end; a feed mechanism, with a chamber to hold a projectile, positioned at the breach end of the barrel, and moveable between a first position with the chamber and the barrel unaligned, and a second position with the chamber and the barrel aligned; a receiver positioned on an opposite side of the feed mechanism from the barrel, the receiver comprising a gas duct to convey gas into the chamber to fire the projectile; and a sleeve, slidingly coupled to the receiver, and adapted to forcibly slide into a position in contact with the feed mechanism, in response to pressure from the gas conveyed through the gas duct, to seal a first gap between the receiver and the feed mechanism.