Firearms – Implements – Sight devices
Reexamination Certificate
2000-05-22
2001-12-25
Carone, Michael J. (Department: 3641)
Firearms
Implements
Sight devices
C042S120000, C042S121000, C042S136000
Reexamination Certificate
active
06332286
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of The Invention
The present invention relates a gun tube calibrator, and especially to a gun tube calibrator comprising a calibration lens, a sliding seat, and a block, which can be adjusted according to the sizes of the gun tube calibrator to be linearly aligned with the front sight of a gun tube.
2. Description of the Prior Art
For calibrating the front sight of a prior art gun, a target is placed at a proper distance, then by shooting, the distance between the hole on the target and the center of the target is measured and then the displacement adjustment is performed according to the scale of a telescopic gun sight lens. Then a further shooting is performed to check whether the position of the hole on the target is matched with the center of the target. If a deviation is still existed, then the process is performed repeatedly until the hole is aligned with the center of the target.
However, such way for calibration the front sight of a gun is not effective, and not economical. Moreover, it is not matched the current tend.
In order to improve the above defects, some improvements of gun tube calibrator are developed, such as that shows in FIG.
1
. The gun tube calibrator
1
includes a calibration lens
11
, a fixing seat
12
being installed below the calibration lens
11
, a through hole
13
being installed in the center of the fixing seat
12
for being inserted by a straight pin
14
of the gun tube. An adjusting screw
15
is installed at the lower end of the fixing seat
12
for fixing. In assembly, as that shown in
FIG. 2
, the straight pin
14
is inserted into the through hole
13
of the fixing seat
12
. Then, an adjusting screw
15
serves to tighten and fix. In calibration, as shown in
FIG. 13
, another end of the straight pin is inserted into the gun tube
16
so that the calibration lens
11
is positioned at the upper end. Then, by the telescopic gun sight lens
17
original installed at the upper end of the gun tube, the calibration of the gun tube is achieved.
Although aforesaid gun tube calibrator provide a convenient way for calibrating a gun tube, there are many kinds of gun tube calibrators are invented, which have different sizes and specifications for matching the requirement of different telescopic gun sight lens. Not only the calibration work is complex, but also the manufacturing cost is high.
SUMMARY OF THE INVENTION
Accordingly, the primary object of present invention is to provide a gun tube calibrator comprising a calibration lens, a sliding seat and a block, Therefore, gun tube calibrator can be applied to telescopic gun sight lenses of different sizes and a calibration head can be adjusted to a proper height.
Another object of the present invention is to provide a gun tube calibrator. The defect in the prior art, such as different gun tube calibrators are necessary for suiting gun tubes of different sizes, is improved. Moreover, the cost is reduced greatly.
A further object of the present invention is to provide gun tube calibrator. It can be applied to telescopic gun sight lenses of different sizes. The calibration head can be adjusted to a proper height. Thus, the telescopic gun sight lens of different sizes can be suited. An optimum shooting rate can be adjusted. Therefore, the present invention is practical in use and is convenient.
The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing.
REFERENCES:
patent: 2367288 (1945-01-01), Klopp et al.
patent: 3112567 (1963-12-01), Flanagan
patent: 3908282 (1975-09-01), Steffan
patent: 4057905 (1977-11-01), Piaja
patent: 4534116 (1985-08-01), Davis
patent: 5150527 (1992-09-01), Knoster
patent: 5222302 (1993-06-01), Debatty et al.
patent: 5396708 (1995-03-01), Whitley
patent: 5486913 (1996-01-01), Aharon
patent: 5813279 (1998-09-01), Farley
patent: 6176019 (2001-01-01), Frear, Jr.
Carone Michael J.
Dougherty & Troxell
Long Perng Co., Ltd.
Semunegus Lulit
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