Gas operated automatic weapon

专利名称：Gas operated automatic weapon发明人：John S. Donovan申请号：US06/220539申请日：19801229公开号：US04450752A公开日：19840529

摘要：A belt-fed, gas-operated automatic weapon of a type in which the gas pressuredeveloped in the barrel bore during firing is ported just forward of the barrel chamber tobe utilized to compress a system of opposing spring sets which in turn operate thevarious mechanisms involved in the automatic or semi-automatic functioning of theweapon, including ammunition feeding and ejection, bolt locking and unlocking, andreciprocation. Dual power cylinders with symmetrically arranged pistons operated by thegas pressure compress all of the springs in the opposing spring sets by engagement witha sliding carriage. The forces exerted on the bolt locking mechanism by the spring setsare greatly reduced during the interval in which the locking mechanism is operated toreduce wear on the mating surfaces and to properly sequence the unlocking afterdischarging a round. Manual actuation of the weapon is also enabled with an automaticlatching of the bolt in the retracted position upon manual actuation and also upon fulldepression of a selector lever and release of the trigger during automatic fire such thatthe bolt remains in the retracted position upon cessation of fire to allow cooling of thebreech and/or feeding of a fresh ammunition belt. A particular interlinked ammunitionbelt is disclosed to advance rounds carried by the belt through the weapon as well as anarrangement for separating each link from the belt after passing through the weapon.

申请人：DONOVAN; JOHN S.

代理人：John R. Benefiel

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