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Class Information
Number: 89/194
Name: Ordnance > Automatic > Blow back breech block
Description: Guns in which a breech block, having rectilinear motion only, is not locked, but is resiliently held in breech closing position solely by its own inertia and its recoil or return spring.

Sub-classes under this class:

Class Number Class Name Patents
89/197 Box magazine 23
89/195 Pistol grip magazine 13

Patents under this class:

Patent Number Title Of Patent Date Issued
8117958 Firearm with gas operating system Feb. 21, 2012
7938055 Law enforcement carbine with one piece receiver May. 10, 2011
7779741 Semi-automatic firing closed bolt-type carbine anti-jamming cartridge loading system Aug. 24, 2010
7775150 Law enforcement carbine with one piece receiver Aug. 17, 2010
7451683 Pistol Nov. 18, 2008
7055422 Reduced recoil anti-armor gun Jun. 6, 2006
7047686 Versatile M1911-style handgun and improved magazine for rifles and handguns May. 23, 2006
6931978 Rebound attenuation device for automatic firearms Aug. 23, 2005
6761102 Recoil control mechanism for a weapon Jul. 13, 2004
6595103 Inertial breechblock gun system Jul. 22, 2003
6357331 Two-piece barrel for low-energy training ammunition Mar. 19, 2002
6112636 Gas-operated pistol Sep. 5, 2000
5974942 Ejection-assist mechanism for automatic firearms Nov. 2, 1999
5854440 Shoulder-launched multi-purpose assault weapon Dec. 29, 1998
5835978 Shoulder-launched multiple-purpose assault weapon Nov. 10, 1998
5710389 Breech bolt and lock assembly Jan. 20, 1998
5664357 Weapon bolt assembly having premature ignition-preventing means Sep. 9, 1997
5388500 Delayed blow-back for firearms Feb. 14, 1995
4930239 Dual action (function) integral target rifle Jun. 5, 1990
4889032 Automatic firearm Dec. 26, 1989
4803911 Semi-automatic target pistol Feb. 14, 1989
4704944 Semi-automatic pistol Nov. 10, 1987
4649800 Self-contained blowback-type firing unit Mar. 17, 1987
4575962 Unitary bolt face and firing pin device Mar. 18, 1986
4003292 Rifle Jan. 18, 1977

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