Ordnance – Automatic – Blow back breech block
Reexamination Certificate
2008-06-24
2008-06-24
Hayes, Bret (Department: 3641)
Ordnance
Automatic
Blow back breech block
C042S014000, C042S016000
Reexamination Certificate
active
07389719
ABSTRACT:
A firearm such as a semiautomatic pistol or handgun includes a barrel and a slide with a front aperture for rearward movement of the slide around the barrel during cycling of the slide between forward and rearward positions. A wire bushing is provided between the outer diameter of the barrel and the inner diameter of the aperture of the slide for positioning the barrel within the aperture during cycling. The wire bushing is a spring-like, generally round or O-shaped member (e.g., a bent metal wire) mounted within a groove provided in the slide aperture, with portions of the bushing being bent to lie out of the groove for contacting the barrel. The wire bushing reduces the tolerances between the slide and the barrel, thereby improving operation of the firearm, improves re-location of the barrel within the slide, provides for easier maintenance, and reduces mass, cost, and complexity.
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Hayes Bret
McCormick Paulding & Huber LLP
Smith & Wesson Corp.
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