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US 3,946,637 AGranted
Mortar with variable vent for adjusting velocity of a single charge cartridge
AssigneeThe United States of America as represented by the Secretary of the Army
InventorsCarl J. Campagnuolo, Paul A. Curto
Life of this patent
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Abstract
A variably adjusted vent communicates with the interior of a mortar tube. adjusting the vent setting, the velocity of a single charge cartridge can be varied. In one embodiment of the invention, the vent discharge is exhausted below the base plate of the mortar to stabilize the mortar during firing.
Claims4
A mortar device comprising:
- a mortar tube for receiving a cartridge, the tube having an exhaust slot formed therein;
- a second tube radially larger that the mortar tube surrounding the mortar tube and creating an annular passageway between the tubes;
- arcuate vent valve means positioned in the passageway for sliding displacement over the slot to adjust exposed slot area which communicates with the passageway;
- and
- means connected to the the valve means for moving the valve means to a selected position corresponding to a predetermined exposed slot area;
- thereby permitting the exhaust of cartridge gas from the mortar tube to the atmosphere, via the slot and passageway.
3 more elements
Dependencies are inferred from the claim text.