US20050066954A1

US20050066954A1 - Paintball gun barrel with compression chamber

Info

Publication number: US20050066954A1
Application number: US10/662,800
Authority: US
Inventors: Dan Williams
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-09-12
Filing date: 2003-09-12
Publication date: 2005-03-31

Abstract

A paintball gun barrel with compression chamber that increases the distance and accuracy of shots fired from a paintball gun. An outer tube (2) with portholes (15) is placed over an inner tube (13) with portholes (15) and connects to the inner tube (13) via threads (14). The outer tube (2) is lined with a spongy filter (16). Thus, when a shot is fired, the CO₂used to propel a paintball is released from the compression chamber at a much slower rate of speed as compared to traditional paintball guns, thereby increasing the range of a paintball. Additionally, the spirally scored inner tube (13) imparts a spin to the paintball for even better accuracy.

Description

BACKGROUND OF THE INVENTION

This invention relates to paintball guns, more specifically, a paintball gun barrel with compression chamber which is used to obtain more distance and greater accuracy of paintball shots.
Paintball is a recreational activity deemed “the sport of the new millennium.” In its most basic form, paintball brings together two opposing teams competing at a game of capture the flag. A pneumatic air gun is used which propels a gelatin capsule filled with water soluble paint at opposing players. When a person is shot with the capsule, he or she is then removed from the game. The game is won when a player successfully returns the opponents flag to their own team's flag station. Thus, highly accurate shooters are valuable for a team's defense.
Conventional paintball guns used by players use compressed carbon dioxide (CO₂) to fire the paintballs. The barrels of the guns are honed smooth on the inside and have helically-ported holes through which the CO₂is released rapidly. Unfortunately, the smooth inside barrels causes the paintballs to bounce within the barrel when the shots are fired, thus resulting in lower shooting accuracy. In addition, the rapid release of CO₂reduces the distance traveled by the paintball.
Thus, the present invention helps to increase the accuracy and distance of the paintball shots fired by the user by utilizing an outer tube with a filter and discharge holes for CO₂.

The prior art includes the following United States patents:



Patent No.	Inventor	Filing Date	Issue Date

5,228,427	Gardner, Jr.	May 06, 1991	Jul. 20, 1993
5,136,923	Walsh, Jr.	Jul. 08, 1991	Aug. 11, 1992
1,127,250	Humm	May 23, 1914	Feb. 02, 1915
2,043,731	Bourne	Feb. 17, 1936	Jun. 09, 1936
2,448,382	Mason	Oct. 26, 1944	Aug. 31, 1948
984,750	Craven	Feb. 01, 1910	Feb. 21, 1911
2,503,491	Janz	Mar. 29, 1948	Apr. 11, 1950
1,487,214	Dezendorf	Mar. 18, 1921	Mar. 18, 1924

Although some of the above prior art disclosures silencers having a similar structure with inner and outer perforated tubes and packing between them, none is exactly like the present invention in which there is a spirally scored barrel and a compression chamber having an inner tube with holes, a sponge filter and an outer tube with discharge holes for increasing distance and accuracy of the paintball shots fired.

SUMMARY OF THE INVENTION

The primary object of the present invention is to provide a paintball gun barrel with compression chamber which increases the distance of the paintball shots fired.
A further object of the present invention is to provide a paintball gun barrel with compression chamber which increases the accuracy of the paintball shots fired.
The present invention fulfills the above and other objects by providing a paintball gun barrel with compression chamber for a paintball gun which is spirally scored, and having a compression chamber made up of an outer tube and an inner tube. Both the outer and inner tubes have port holes for the release of CO₂. However, the outer tube also has an internal filter which essentially slows the release of the CO₂, thus providing greater accuracy and distance when firing paintball shots.
The above and other objects, features, and advantages of the present invention should become even more readily apparent to those skilled in the art upon a reading of the following detailed description in conjunction with the drawings wherein there is shown and described illustrative embodiments of the invention.

BRIEF DESCRIPTION OF DRAWINGS

This invention is described by appended claims in relation to a description of a preferred embodiment with reference to the following drawings which are explained briefly as follows:
FIG. 1 is a side view of the present invention installed on a paintball gun;
FIG. 2 is a side view of the inner tube component of the present invention;
FIG. 3 is a side view of the outer tube of the present invention;
FIG. 4 is a cross sectional view along lines 4-4 of the embodiment of FIG. 1;
FIG. 5 is a cross sectional view along lines 5-5 of the embodiment of FIG. 3; and
FIG. 6 is a cross sectional view along lines 6-6 of the embodiment of FIG. 1.

DESCRIPTION OF PREFERRED EMBODIMENT

Listed numerically below with reference to the drawings are terms used to describe features of this invention. These terms and numbers assigned to them designate the same features throughout this description.



1.	paintball gun
2.	outer tube
3.	breech end
4.	muzzle end
5.	receiver
6.	butt
7.	CO₂cartridge
8.	grip
9.	trigger
10.	breech
11.	ball retainer
12.	barrel
13.	inner tube
14.	thread
15.	porthole
16.	filter
17.	lip
18.	endpiece

With reference to FIG. 1, a side view of the present invention installed on a paintball gun 1 is shown. The barrel 12 has a breech end 3 and a muzzle end 4. A typical paintball gun 1 also has a receiver 5 in a butt 6 of the paintball gun 1 for receiving a CO₂cartridge 7 which powers the firing of the paintballs from the paintball gun 1. The paintball gun 1 also has a grip 8 and a trigger 9. A breech 10 is located above the trigger 9 and a ball retainer 11 feeds paintballs into the breech 10 for firing. The outer tube 2 has portholes 15 dispersed across the surface to aid in the release of CO₂when shots are fired. The portholes 15 are tear-shaped so as to impart a spin to the paintball for even better accuracy.
In FIG. 2, a side view of the inner tube 13 component of the present invention is shown. The inner tube 13 has tear-shaped portholes 15 dispersed across the surface to promote the release of CO₂. Two sets of threads 14 are located on the barrel 12. An endpiece 18 is located on the inner tube 13 at the muzzle end 4.
With reference to FIG. 3, a side view of the outer tube 2 of the present invention is shown. The outer tube 2 has tear-shaped portholes 15 dispersed across its surface.
Referring to FIG. 4, a cross sectional view along the lines 4-4 of the embodiment of FIG. 1 is shown. The outer tube 2 has an internally located filter 16, which preferably has a spongy consistency and is permeable. The outer tube 2 and filter 16 surround the inner tube 13.
With reference to FIG. 5, a cross sectional view along the lines 5-5 of the embodiment of FIG. 3 is shown. The outer tube 2 has a filter attached within. The outer tube 2 also has a lip 17 located on the muzzle end 4 and threads 14 located on the breech end 3. Because the filter 16 is spongy and porous, the portholes 15 dispersed across the surface of the outer tube 2 are visible in this cross-sectional view.
Referring to FIG. 6, a cross sectional view of the present invention along lines 6-6 of the embodiment of FIG. 1 is shown. When the present invention is installed on a barrel 12, the endpiece 18 of the inner tube 13 is pressed against the lip 17 of the inner tube 13 and extends slightly past the muzzle end 4 of the outer tube 2.
To secure the outer tube 2 onto the inner tube 13, the user places the outer tube 2 over the inner tube 13 until the outer tube 2 is resting on the threads 14 of the inner tube 13. The user then rotates the outer tube 2 clockwise so as the threads 14 on the outer tube 2 secure to the threads 14 on the inner tube 13. A compression chamber is now formed for increasing distance and accuracy of shots from a paintball gun 1.
The use of the present invention will permit CO₂to exit the barrel 12 at a slower rate of speed compared to conventional paintball guns by using the outer tube 2 having a filter 16 and portholes 15. This reduction of CO₂released speed will increase the accuracy of the firing of the paintballs. In addition, the spirally scored inner tube 13 will impart a spin to the paintball for even better accuracy.
It is to be understood that while a certain form of the invention is illustrated, it is not to be limited to the specific form or arrangement of parts herein described and shown. It will be apparent to those skilled in the art that various changes may be made without departing from the scope of the invention and the invention is not to be considered limited to what is shown and described in the specification and drawings.

Claims

1. A paintball gun barrel with compression chamber comprising:

an inner tube having a breech end and a barrel end;

said inner tube having a first length measured from said breech end to said barrel end;

said inner tube having a muzzle end located between said breech end and said barrel end;

said inner tube having a second length measured from said breech end to said muzzle end;

said inner tube having a plurality of tear-shaped portholes located between said breech end and said muzzle end;

an outer tube having a breech end and a muzzle end;

said outer tube having a length measured from said breech end to said muzzle end;

said outer tube sized to accommodate a width of said inner tube;

said outer tube having a plurality of tear-shaped portholes located between said breech end and said muzzle end;

said outer tube having an inner surface and an outer surface; and

said outer tube having a filter lining said inner surface.

2. The paintball gun barrel with compression chamber of claim 1 wherein:

said inner tube portholes are dispersed as parallel helixes; and

said inner tube portholes extend from said breech end to said muzzle end.

3. The paintball gun barrel with compression chamber of claim 1 wherein:

said outer tube portholes are dispersed as parallel helixes; and

said outer tube portholes extend from said breech end to said muzzle end.

4. The paintball gun barrel with compression chamber of claim 1 wherein:

said filter is porous;

said filter is spongy; and

said filter extends from said outer tube breech end to said outer tube muzzle end.

5. The paintball gun barrel with compression chamber of claim 1 wherein:

said inner tube has external threads located at said breech end;

said outer tube has internal threads located at said breech end; and

said outer tube internal threads match said breech end external threads of said inner tube so that the outer tube is removably and rotatably attachable to said inner tube.

6. The paintball gun barrel with compression chamber of claim 1 wherein:

said outer tube length is equal to said inner tube second length.