Ordnance – Automatic – Gas piston type
Reexamination Certificate
2007-04-18
2010-11-16
Lee, Benjamin P (Department: 3641)
Ordnance
Automatic
Gas piston type
C089S193000, C042S095000
Reexamination Certificate
active
07832326
ABSTRACT:
A firearm has a body with a bolt assembly reciprocating within the body. A barrel having a bore extends from the body. A gas block with an elongated chamber is connected to the barrel, and a gas passage connects the barrel bore to the gas block chamber. An operating rod has a forward end portion closely received in the gas block chamber and a rear end positioned to operably engage the bolt assembly. The gas block chamber has a forward portion closely receiving the forward end portion of the rod, and the gas block chamber has a rear portion with a profile larger than the forward portion. The forward portion of the rod may be a cylinder, and the rear portion of the gas block chamber may be fluted to provide clearance for flushing out contaminants. The rod may rotate freely to prevent accumulation of contaminants.
REFERENCES:
patent: 3982468 (1976-09-01), Browning
patent: 3990347 (1976-11-01), Junker
patent: 4244273 (1981-01-01), Langendorfer et al.
patent: 4324170 (1982-04-01), Healy
patent: 5351598 (1994-10-01), Schuetz
patent: 6848351 (2005-02-01), Davies
patent: 7461581 (2008-12-01), Leitner-Wise
patent: 2007/0199435 (2007-08-01), Hochstrate et al.
patent: 2008/0276797 (2008-11-01), Leitner-Wise
patent: 2009/0223357 (2009-09-01), Herring
Langlotz Bennet K.
Langlotz Patent & Trademark Works, Inc.
Lee Benjamin P
LandOfFree
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