Split wedge/breechblock and sealing means for gun

Details Split wedge/breechblock and sealing means for gun Split wedge/breechblock and sealing means for gun

1996-02-12

1996-12-31

Johnson, Stephen M.

Ordnance

Breech closures

Transverse

89 26, F41A 374

Patent

active

055896561

ABSTRACT:
A split wedge/breechblock for inserting and extracting the bridge seal from he powder chamber of a gun tube. The device includes a sealing mechanism for the sliding surfaces between the wedge and the breechblock, a bridge seal for use in the XM 297 gun system, and an improved stepped wedge and breechblock design which eliminates adverse downward forces during gun firing.

REFERENCES:
patent: 203797 (1878-05-01), Tufts
patent: 1576962 (1926-03-01), Froelich
patent: 4548121 (1985-10-01), Janssen et al.
patent: 5042361 (1991-08-01), Janssen et al.

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