U.S. patent application number 12/790821 was filed with the patent office on 2011-12-01 for gun with long sight radius and short barrel.
This patent application is currently assigned to MARVIN GLENN WONG. Invention is credited to MARVIN GLENN WONG.
Application Number | 20110289815 12/790821 |
Document ID | / |
Family ID | 45020907 |
Filed Date | 2011-12-01 |
United States Patent
Application |
20110289815 |
Kind Code |
A1 |
WONG; MARVIN GLENN |
December 1, 2011 |
GUN WITH LONG SIGHT RADIUS AND SHORT BARREL
Abstract
This invention consists of an extended sight radius on a gun
that fires a single projectile at a time. The sights may be mounted
on extensions to get the required sight radius length. The gun has
a short barrel to minimize the bullet residence time in the barrel
during firing, which minimizes bullet launch trajectory errors due
to gun movement during firing.
Inventors: |
WONG; MARVIN GLENN; (Happy
Valley, OR) |
Assignee: |
WONG; MARVIN GLENN
Happy Valley
OR
|
Family ID: |
45020907 |
Appl. No.: |
12/790821 |
Filed: |
May 29, 2010 |
Current U.S.
Class: |
42/111 |
Current CPC
Class: |
F41G 1/425 20130101;
F41G 1/01 20130101 |
Class at
Publication: |
42/111 |
International
Class: |
F41G 1/01 20060101
F41G001/01 |
Claims
1. Extensions to hold the front and/or rear sights on a gun that
fires a single projectile at a time.
2. The combination of the sight extensions in claim 1 combined with
a short gun barrel that fires a single projectile at a time.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] No text.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
[0002] No text.
REFERENCE TO SEQUENCE LISTING, A TABLE, OR A COMPUTER PROGRAM
LISTING COMPACT DISC APPENDIX
[0003] No text.
BACKGROUND OF THE INVENTION
[0004] This invention is concerned with improving the inherent
accuracy of iron-sighted firearms. Generally, with iron-sighted
firearms, the front sight is attached at the distal end of the
barrel and the rear sight is near the rear of the firearm for
pistols and near the rear of the receiver for rifles. This
arrangement limits the relation between the distance between the
front and rear sight "sight radius" and the barrel length. This is
important because the barrel length is a parameter that controls
residence time of the bullet in the barrel and if the gun is moved
while the bullet is transiting the barrel, the initial bullet
trajectory error will be increased, leading to a loss of accuracy.
At the same time, it is desirable to have the sight radius as long
as practical so that the precision of aiming will be as great as
possible.
BRIEF SUMMARY OF THE INVENTION
[0005] This invention provides a gun with a short barrel and an
elongated sight radius so that high sighting accuracy may be
combined with short residence time of the bullet in the barrel so
that bullet launch trajectory errors due to gun movement upon
recoil may be lessened. The sights may be mounted on ribs that
extend distally or proximally.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING
[0006] FIG. 1 shows the side view of an embodiment of this
invention on a pistol. The front sight is mounted on a rib that
extends distally. The distance between the front sight and rear
sight "sight radius" is significantly longer than the barrel.
DETAILED DESCRIPTION OF THE INVENTION
[0007] This invention is concerned with improving the inherent
accuracy of iron-sighted firearms. Generally, with iron-sighted
firearms, the front sight is attached at the distal end of the
barrel and the rear sight is near the rear of the firearm for
pistols and near the rear of the receiver for long guns.
[0008] In U.S. Pat. No. 4,130,958 Gutridge teaches the use of an
elongated front sight and a rib feature with surfaces of
contrasting colors between the front and rear sight to make easier
fast and accurate sighting of a pistol, rifle, or other small arm.
In this invention, the front sight is elongated toward the rear
sight by at least 20% of the distance between the front and rear
sight. In U.S. Pat. No. 5,394,633 Alessandri teaches the use of a
rib attached to a choke receiving seat that holds a front sight and
extends longitudinally forward on a shotgun enabling more accurate
sighting on a shotgun having a short barrel so it has improved
handling and dynamic characteristics for some types of shooting
requiring a fast response. In the use of this invention, the
shotgun is in motion tracking a moving target when fired, and since
a pattern of shot is launched, less accuracy is needed than if a
single projectile were launched.
[0009] In the applications in which a single projectile is fired
from a gun, the distal end of the front sight is no farther from
the rear sight than the distal end of the barrel, limiting the
sight radius and the accuracy of the alignment of the sights. If
the barrel is elongated to lengthen the sight radius and improve
the accuracy of sight alignment, the residence time of the bullet
in the barrel is increased, leading to larger errors in bullet
launch trajectory due to gun movement upon recoil. In the
application in which a shotgun has an extended front sight and
short barrel, a shotgun with a practical length barrel of at least
14 inches will still have significant barrel movement due to recoil
while the shot load is still traveling down the barrel. This is
usually insignificant for a shotgun because the several shot
pellets launched simultaneously separate in flight and provide
several spatially separated opportunities to strike the target
independently, lessening the accuracy requirements.
[0010] This invention combines a long sight radius for precise
aiming with a short barrel for short bullet residence time during
firing and less initial bullet trajectory error due to gun movement
while the bullet is transiting the barrel. The long sight radius
may be implemented by mounting the front sight, the rear sight, or
both on extensions to increase the separation between them from the
distance available by mounting them directly on the gun barrel and
receiver or frame. The preferred embodiment is to mount the rear
sight at its customary position at the rear of the long gun
receiver or the rear of the top of the pistol. The preferred
mounting of the front sight is to mount it near the end of a rib
that extends distally past the end of the barrel. A typical
extension length is 2 to 16 inches past the distal end of the
barrel. The preferred embodiment for the barrel is the shortest
practical barrel from an accuracy or legal perspective. There is
currently no legal minimum length for a pistol barrel. The minimum
length for accuracy will be in the range of 3 inches. For a rifle,
if the barrel is less than 16 inches long in the US, a special
license will be needed. If the short barrel is licensed, it may be
as short as 10 inches. The preferred length for a rifle barrel will
be between 10 and 24 inches. The preferred embodiment will use a
rifled barrel.
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