Ordnance – Automatic – Blow back breech block
Reexamination Certificate
1999-02-23
2001-05-22
Jordan, Charles T. (Department: 3644)
Ordnance
Automatic
Blow back breech block
C089S195000
Reexamination Certificate
active
06234059
ABSTRACT:
BACKGROUND OF THE INVENTION
U.S. Pat. No. 5,669,169 discloses a pistol having a cross-sectionally U-shaped frame which is made of a plastic material and which includes a formed-on grip and trigger guard. The pistol further includes two inserts positioned in the front and the rear of the frame. Both inserts have lateral guide rails for guiding the longitudinally displaceable slide. The inserts are, immediately after an injection molding of the frame, inserted into the frame when the latter is still warm. As a result, the frame shrinks onto the inserts and thus the frame and the inserts become an inseparable unit.
SUMMARY OF THE INVENTION
It is an object of the invention to provide an improved pistol of the above-outlined type which is simple to service.
This object and others to become apparent as the specification progresses, are accomplished by the invention, according to which, briefly stated, the pistol includes a cross-sectionally U-shaped frame which has first and second opposite side walls, a formed-on grip, a formed-on trigger guard, a first through bore provided in the first side wall and a second through bore provided in the second side wall in alignment with the first through bore. A structural unit is removably accommodated in the frame above the trigger guard and includes bilateral guide rails and a through aperture aligned with the first and second through bores. The structural unit is received in the frame with a form fit for preventing longitudinal displacements of the structural unit relative to the frame. A removable pin passes through the first and second through bores and the through aperture of the structural unit for removably securing the structural unit to the frame. A slide is received in the frame for forward and rearward reciprocating motions relative to the frame. The rails of the structural unit cooperate with the slide for guiding the slide during its reciprocating motions. A pistol barrel is displaceably received in the slide, and a barrel guiding arrangement guides the barrel in the slide. A closing spring is received in the frame underneath the barrel for urging the slide in a forward direction.
REFERENCES:
patent: 4602450 (1986-07-01), Hoenig
patent: 4709497 (1987-12-01), Resca
patent: 4825744 (1989-05-01), Glock
patent: 5309815 (1994-05-01), Möller et al.
patent: 5406731 (1995-04-01), Stevens
patent: 5586545 (1996-12-01), McCaslin
patent: 5669169 (1997-09-01), Schmitter et al.
patent: 365866 (1922-12-01), None
patent: 0 979 986 (2000-02-01), None
patent: 2 380 526 (1978-09-01), None
patent: 29279 (1912-07-01), None
patent: 465941 (1937-04-01), None
patent: 97/29337 (1997-08-01), None
Fuchs Rudolf
Osterrath Michael
Jordan Charles T.
Kelemen Gabor J.
Nelson Judith A.
SIG Arms International AG
Venable
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