U.S. patent application number 11/335402 was filed with the patent office on 2007-07-19 for gas gun having air driving device.
Invention is credited to Yiauguo Gan.
Application Number | 20070163561 11/335402 |
Document ID | / |
Family ID | 38261980 |
Filed Date | 2007-07-19 |
United States Patent
Application |
20070163561 |
Kind Code |
A1 |
Gan; Yiauguo |
July 19, 2007 |
Gas gun having air driving device
Abstract
A compressed gas gun includes an upper housing having a barrel
for receiving projectiles to be fired and having a high pressure
storage chamber, a loading bolt slidably engaged in the upper
housing and movable to feed the projectile forward to a firing
position. A pipe is attached to the loading bolt and includes an
inner space, a conduit having a pathway, and one or more apertures
for communicating the inner space with the barrel. An enclosing
device may be used for selectively enclosing a passage of the
loading bolt to allow the pressure gas to fill the pipe and the
high pressure storage chamber of the barrel, and for selectively
disengaging from the loading bolt and enclosing the conduit to
allow the pressure gas to fire the projectile.
Inventors: |
Gan; Yiauguo; (Taichung,
TW) |
Correspondence
Address: |
CHARLES E. BAXLEY, ESQ.
90 JOHN STREET
THIRD FLOOR
NEW YORK
NY
10038
US
|
Family ID: |
38261980 |
Appl. No.: |
11/335402 |
Filed: |
January 19, 2006 |
Current U.S.
Class: |
124/72 |
Current CPC
Class: |
F41B 11/721
20130101 |
Class at
Publication: |
124/072 |
International
Class: |
F41B 11/02 20060101
F41B011/02 |
Claims
1. A compressed gas gun comprising: an upper housing including a
barrel having a bore, and including a projectile feed tube attached
to said barrel and opened into said bore of said barrel for
supplying projectiles into said bore of said barrel one at a time,
and including a high pressure storage chamber communicating with
said bore of said barrel, a lower housing having a hand grip
extended downwardly for being grasped and held by a user, a loading
bolt slidably engaged in said bore of said upper housing and
movable to engage with said projectile that is supplied into said
bore of said barrel for feeding said projectile forwardly toward a
firing position, said loading bolt including a passage
communicating with said bore of said barrel for supplying pressure
gas to propel or to fire said projectile, a pipe attached to said
loading bolt and including an inner space, and including a
rearwardly extending conduit having a pathway formed in said
conduit and communicating with said inner space of said pipe, said
pipe including at least one aperture communicating said inner space
of said pipe with said high pressure storage chamber of said barrel
and said upper housing and for allowing the pressure gas to flow
from said inner space of said pipe into said high pressure storage
chamber of said barrel and said upper housing, and means for
selectively enclosing said passage of said loading bolt to allow
the pressure gas to flow and to fill said inner space of said pipe
and said pathway of said conduit and said high pressure storage
chamber of said barrel and said upper housing, and for selectively
disengaging from said passage of said loading bolt and enclosing
said pathway of said conduit to allow the pressure gas to flow
through said passage of said loading bolt and to fire said
projectile.
2. The compressed gas gun as claimed in claim 1, wherein said
loading bolt includes a peripheral bulge slidably engaged in said
bore and said high pressure storage chamber of said barrel of said
upper housing.
3. The compressed gas gun as claimed in claim 2, wherein said upper
housing includes an inner peripheral shoulder communicating with
said bore and said high pressure storage chamber of said barrel of
said upper housing, for engaging with said peripheral bulge of said
loading bolt for limiting said loading bolt to move relative to
said upper housing.
4. The compressed gas gun as claimed in claim 2, wherein said upper
housing includes a partition having a port formed therein for
communicating with said bore and said high pressure storage chamber
of said barrel of said upper housing, and for supplying the
pressure gas to flow into said bore and said high pressure storage
chamber of said barrel of said upper housing and to move said
loading bolt rearwardly.
5. The compressed gas gun as claimed in claim 4, wherein a control
device is disposed in said lower housing and includes a hose
coupled to said port for supplying the pressure gas to said bore
and said high pressure storage chamber of said barrel of said upper
housing.
6. The compressed gas gun as claimed in claim 1, wherein said
enclosing means includes a blocking member slidably received in
said inner space of said pipe and selectively movable to be forced
onto or against said loading bolt to enclose said passage of said
loading bolt and selectively movable to be forced onto or against
said conduit to enclose said pathway of said conduit.
7. The compressed gas gun as claimed in claim 6, wherein said upper
housing includes a partition having a port formed therein for
communicating with said bore and said high pressure storage chamber
of said barrel of said upper housing, and for supplying the
pressure gas to flow into said bore and said high pressure storage
chamber of said barrel of said upper housing and to move said
blocking member to enclose said passage of said loading bolt.
8. The compressed gas gun as claimed in claim 7, wherein said upper
housing includes a rear end cap for blocking said high pressure
storage chamber and said bore of said barrel and said upper
housing, said end cap includes a cavity formed therein and
communicating with said bore of said barrel and an aperture formed
therein and aligned with said port of said partition for
communicating said cavity of said end cap and said bore of said
barrel with said port of said partition.
9. The compressed gas gun as claimed in claim 1, wherein a piston
is slidably engaged onto said conduit of said pipe and movable
toward said pipe and arranged to allow the pressure gas to force
said piston forwardly toward said pipe and to selectively force the
pressure gas to flow from said high pressure storage chamber of
said barrel into said inner space of said pipe and then to flow
into said passage of said loading bolt.
10. The compressed gas gun as claimed in claim 9, wherein said
upper housing includes a spring member engaged with said piston for
moving said piston toward said pipe.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a compressed gas gun, and
more particularly to a compressed gas gun having a simplified
pneumatic or air driving system for simplifying the manufacturing
processes of the compressed gas gun and for reducing the
manufacturing cost of the compressed gas gun.
[0003] 2. Description of the Prior Art
[0004] Typical compressed gas guns comprise a projectile feed tube
for supplying projectiles into a barrel of a gun body one at a
time, and the projectiles are preferably spherical in form and
contain a marking fluid therein, a loading bolt is slidably
disposed in the rear portion of the barrel for engaging with the
one projectile that is supplied or fed into the barrel and for
feeding or loading the projectile slightly forwardly toward a
firing position.
[0005] For example, U.S. Pat. No. 6,371,099 to Lee discloses one of
the typical gas powered guns or paint ball guns also comprising a
loading bolt slidably disposed in a rear portion of a barrel of a
gun body for engaging with the projectile and for feeding or
loading the projectile forwardly toward a firing position to wait
for being fired. Normally, a hammer and a complicated control
device are further required to be provided and attached to the gun
body for moving or operating or actuating the loading bolt to
engage and to feed or load the projectiles.
[0006] However, the loading bolt and the hammer and the control
device form a rather complicated configuration that may not be
easily manufactured and assembled and that may include a greatly
increased manufacturing cost.
[0007] The present invention has arisen to mitigate and/or obviate
the afore-described disadvantages of the conventional compressed
gas guns.
SUMMARY OF THE INVENTION
[0008] The primary objective of the present invention is to provide
a compressed gas gun including a simplified pneumatic or air
driving system for simplifying the manufacturing processes of the
compressed gas gun and for reducing the manufacturing cost of the
compressed gas gun.
[0009] In accordance with one aspect of the invention, there is
provided a compressed gas gun comprising an upper housing including
a barrel having a bore, and including a projectile feed tube
attached to the barrel and opened into the bore of the barrel for
supplying projectiles into the bore of the barrel one at a time,
and including a high pressure storage chamber communicating with
the bore of the barrel, a lower housing having a hand grip extended
downwardly for being grasped and held by a user, a loading bolt
slidably engaged in the bore of the upper housing and movable to
engage with the projectile that is supplied into the bore of the
barrel for feeding the projectile forwardly toward a firing
position, the loading bolt including a passage communicating with
the bore of the barrel for supplying pressure gas to propel or to
fire the projectile, a pipe attached to the loading bolt and
including an inner space, and including a rearwardly extending
conduit having a pathway formed in the conduit and communicating
with the inner space of the pipe, the pipe including at least one
aperture communicating the inner space of the pipe with the high
pressure storage chamber of the barrel and the upper housing and
for allowing the pressure gas to flow from the inner space of the
pipe into the high pressure storage chamber of the barrel and the
upper housing, and an enclosing device for selectively enclosing
the passage of the loading bolt to allow the pressure gas to flow
and to fill the inner space of the pipe and the pathway of the
conduit and the high pressure storage chamber of the barrel and the
upper housing, and for selectively disengaging from the passage of
the loading bolt and enclosing the pathway of the conduit to allow
the pressure gas to flow through the passage of the loading bolt
and to fire the projectile.
[0010] The loading bolt includes a peripheral bulge slidably
engaged in the bore and the high pressure storage chamber of the
barrel of the upper housing. The upper housing includes an inner
peripheral shoulder communicating with the bore and the high
pressure storage chamber of the barrel of the upper housing, for
engaging with the peripheral bulge of the loading bolt for limiting
the loading bolt to move relative to the upper housing.
[0011] The upper housing includes a partition having a port formed
therein for communicating with the bore and the high pressure
storage chamber of the barrel of the upper housing, and for
supplying the pressure gas to flow into the bore and the high
pressure storage chamber of the barrel of the upper housing and to
move the loading bolt rearwardly. A control device is disposed in
the lower housing and includes a hose coupled to the port for
supplying the pressure gas to the bore and the high pressure
storage chamber of the barrel of the upper housing.
[0012] The enclosing device includes a blocking member slidably
received in the inner space of the pipe and selectively movable to
be forced onto or against the loading bolt to enclose the passage
of the loading bolt and selectively movable to be forced onto or
against the conduit to enclose the pathway of the conduit.
[0013] The upper housing includes a partition having a port formed
therein for communicating with the bore and the high pressure
storage chamber of the barrel of the upper housing, and for
supplying the pressure gas to flow into the bore and the high
pressure storage chamber of the barrel of the upper housing and to
move the blocking member to enclose the passage of the loading
bolt.
[0014] The upper housing includes a rear end cap for blocking the
high pressure storage chamber and the bore of the barrel and the
upper housing, the end cap includes a cavity formed therein and
communicating with the bore of the barrel and an aperture formed
therein and aligned with the port of the partition for
communicating the cavity of the end cap and the bore of the barrel
with the port of the partition.
[0015] A piston is slidably engaged onto the conduit of the pipe
and movable toward the pipe and arranged to allow the pressure gas
to force the piston forwardly toward the pipe and to selectively
force the pressure gas to flow from the high pressure storage
chamber of the barrel into the inner space of the pipe and then to
flow into the passage of the loading bolt. The upper housing
includes a spring member engaged with the piston for moving the
piston toward the pipe.
[0016] Further objectives and advantages of the present invention
will become apparent from a careful reading of the detailed
description provided hereinbelow, with appropriate reference to the
accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] FIG. 1 is a partial cross sectional view of a compressed gas
gun in accordance with the present invention;
[0018] FIG. 2 is a partial exploded view of a loading device of the
compressed gas gun;
[0019] FIG. 3 is a perspective view illustrating a flexible or
resilient control member of the compressed gas gun;
[0020] FIG. 4 is a partial cross sectional view similar to FIG. 1,
illustrating the operation of the compressed gas gun; and
[0021] FIGS. 5, 6 are further partial cross sectional views similar
to FIGS. 1 and 4, illustrating the operation of the loading bolt of
the compressed gas gun.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0022] Referring to the drawings, and initially to FIGS. 1-2, a
compressed gas gun 1 in accordance with the present invention
comprises an upper housing 10, and a lower housing 30 having a hand
grip 31 extended downwardly therefrom for being grasped or held by
the users. The upper housing 10 includes a barrel 11 provided or
extended forwardly therefrom, and a projectile feed tube 12
attached to the barrel 11 and opened into the barrel 11 for feeding
or supplying projectiles 80 into a bore 13 of the barrel 11 one at
a time. The bore 13 may be formed in the barrel 11 and/or in the
upper housing 10.
[0023] A loading device 50 includes a loading bolt 51 slidably
disposed or engaged in the upper housing 10 or in the bore 13 of
the barrel 11, and movable to engage with the projectile 80 that is
supplied or fed into the barrel 11 (FIGS. 1, 4) and for feeding or
loading the projectile 80 forwardly toward a firing position (FIG.
4). The loading bolt 51 includes a passage 52 formed therein and
communicating with the bore 13 of the barrel 11 for supplying
pneumatic air or high pressure gas to propel or to fire the
projectile 80. The pneumatic air or high pressure gas source, such
as the typical gas bottle (not shown) or the like may be attached
to the lower housing 30 for supplying the pneumatic air or high
pressure gas to the compressed gas gun 1.
[0024] The upper housing 10 includes a high pressure storage
chamber 14 formed in an intermediate or middle portion of the upper
housing 10 and communicating with the bore 13 of the barrel 11 or
of the upper housing 10, and includes an end cap 15 attached to the
rear portion of the upper housing 10 for blocking or enclosing the
high pressure storage chamber 14 and the bore 13 of the barrel 11
or of the upper housing 10. The compressed gas gun 1 further
includes a partition 20 formed or provided between the upper
housing 10 and the lower housing 30 and having one or more, such as
two ports 21, 23 formed therein for communicating the bore 13 of
the barrel 11 or of the upper housing 10 with the lower housing
30.
[0025] It is preferable that the end cap 15 includes a cavity 16
formed therein and communicating with the bore 13 of the barrel 11
or of the upper housing 10, and further includes an aperture 17
formed therein and aligned with one of the ports 21 of the
partition 20 for communicating the cavity 16 of the end cap 15 and
thus the bore 13 of the barrel 11 or of the upper housing 10 with
the lower housing 30. A control device 40, such as a solenoid
valve, a microswitch, a three-way or four-way control valve 40 or
the like is disposed in the lower housing 30 and coupled to the
ports 21, 23 of the partition 20 with such as hoses 41, 43
respectively, and also coupled to the typical gas bottle (not
shown) or the like for controlling the pneumatic air or high
pressure gas to flow to the bore 13 of the barrel 11 or of the
upper housing 10.
[0026] A typical trigger 32 is pivotally attached to the lower
housing 30 and preferably arranged within a trigger guard 33, for
engaging with the control device 40 in order to actuate the control
device 40 to selectively control or supply the pneumatic air or
high pressure gas directly to the bore 13 of the barrel 11 or of
the upper housing 10 or indirectly through the cavity 16 and the
aperture 17 of the end cap 15 via either of the ports 21, 23 of the
partition 20 and the hoses 41, 43 respectively. The upper housing
10 includes an inner peripheral shoulder 18 formed therein and
communicating with the bore 13 or the high pressure storage chamber
14 of the barrel 11 or of the upper housing 10.
[0027] The loading bolt 51 of the loading device 50 includes a
piston or an enlarged peripheral bulge 53 extended radially and
outwardly therefrom and slidably engaged in the bore 13 or the high
pressure storage chamber 14 of the barrel 11 or of the upper
housing 10, and the inner peripheral shoulder 18 of the upper
housing 10 may be engaged with the enlarged peripheral bulge 53 of
the loading bolt 51 for limiting the movement of the loading bolt
51 relative to the upper housing 10, and for locating the
peripheral bulge 53 of the loading bolt 51 behind the front port 23
of the partition 20, and arranged to allow the pneumatic air or
high pressure gas supplied to the front port 23 of the partition 20
to force the peripheral bulge 53 and thus the loading bolt 51
rearwardly toward the end cap 15 (FIGS. 5, 6).
[0028] As shown in FIGS. 1 and 2, the loading bolt 51 includes a
threaded portion or an outer thread 54 formed or provided on the
middle portion thereof and located or arranged behind the
peripheral bulge 53, and further includes an extension 55 extended
rearwardly and having an outer diameter smaller than that of the
loading bolt 51 and the outer thread or the threaded portion 54.
The loading device 50 further includes a pipe 60 having an inner
thread 61 formed therein for threading with the outer thread or the
threaded portion 54 of the loading bolt 51 and for attaching or
securing the pipe 60 to the loading bolt 51.
[0029] The pipe 60 includes a reduced conduit 62 extended
rearwardly therefrom and slidably engaged into the cavity 16 of the
end cap 15 and having a pathway 63 formed therein for communicating
with the cavity 16 of the end cap 15 and an inner space 64 of the
pipe 60 and for allowing the pneumatic air or high pressure gas to
flow from the hose 41 and the port 21 of the partition 20 and the
cavity 16 and the aperture 17 of the end cap 15 into the pathway 63
of the conduit 62 and then into the inner space 64 of the pipe 60,
best shown in FIG. 4. The pipe 60 includes one or more apertures 65
formed therein for communicating the inner space 64 of the pipe 60
with the high pressure storage chamber 14 of the barrel 11 or of
the upper housing 10 and for allowing the pneumatic air or high
pressure gas to flow from the inner space 64 of the pipe 60 into
the high pressure storage chamber 14 of the barrel 11 or of the
upper housing 10.
[0030] The loading device 50 further includes a blocking or
enclosing member 70 slidably received in the inner space 64 of the
pipe 60 and movable to be forced onto or against the extension 55
of the loading bolt 51 (FIG. 4) by the pneumatic air or high
pressure gas that flows into the inner space 64 of the pipe 60 in
order to selectively block or enclose the passage 52 of the loading
bolt 51, and thus to allow the pneumatic air or high pressure gas
to flow into and to be filled within the inner space 64 of the pipe
60 and the pathway 63 of the conduit 62 and the high pressure
storage chamber 14 of the barrel 11 or of the upper housing 10. It
is preferable that the blocking member 70 is made of soft,
resilient, or spring rubber or other synthetic materials.
[0031] The loading device 50 further includes a piston 75 slidably
engaged onto the conduit 62 or the pipe 60 and movable between the
pipe 60 and the end cap 15 (FIGS. 4-6), and engageable with the end
cap 15 for limiting the movement of the piston 75 relative to the
upper housing 10 and the pipe 60 and the end cap 15. A spring
member 77 is located or disposed behind the piston 75 or engaged
between the piston 75 and the end cap 15 to force the piston 75
forwardly toward the pipe 60 and the loading bolt 51 and away from
the end cap 15 (FIG. 5), and to selectively force the pneumatic air
or high pressure gas to flow from the high pressure storage chamber
14 of the barrel 11 or of the upper housing 10 into the inner space
64 of the pipe 60 and then to flow into the passage 52 of the
loading bolt 51 and to propel or to fire the projectile 80, best
shown in FIG. 5.
[0032] In operation, as shown in FIG. 4, when the compressed gas
gun 1 is initialized or energized or actuated by such as pulling
the trigger 32 once and by the user, for example, the control
device 40 may actuate or control the pneumatic air or high pressure
gas to flow into the hose 41 and then into the port 21 of the
partition 20 and the cavity 16 and the aperture 17 of the end cap
15 and then into the pathway 63 of the conduit 62 and into the
inner space 64 of the pipe 60, for allowing the pneumatic air or
high pressure gas to flow into and to be filled within the inner
space 64 of the pipe 60 and the pathway 63 of the conduit 62 and
the high pressure storage chamber 14 of the barrel 11 or of the
upper housing 10. The blocking member 70 may be moved and forced
onto or against the extension 55 of the loading bolt 51 by the
pneumatic air or high pressure gas in order to block or enclose the
passage 52 of the loading bolt 51.
[0033] As shown in FIG. 5, the control device 40 may then switch
off or open the rear hose 41 to control or to release the pneumatic
air or high pressure gas to flow out of the rear hose 41. When the
rear hose 41 is released or opened, and the pneumatic air or high
pressure gas in the high pressure storage chamber 14 of the barrel
11 or of the upper housing 10 may force the blocking member 70 to
move rearwardly toward and onto or against the conduit 62 of the
pipe 60 in order to block or enclose the pathway 63 of the conduit
62.
[0034] When the pathway 63 of the conduit 62 is blocked or enclosed
by the blocking member 70 and when the blocking member 70 is moved
away from the extension 55 of the loading bolt 51, the pneumatic
air or high pressure gas in the high pressure storage chamber 14 of
the barrel 11 or of the upper housing 10 and the inner space 64 of
the pipe 60 may be guided to flow into the passage 52 of the
loading bolt 51 and to propel or to fire the projectile 80. At this
moment, the piston 75 may also be forced to move forwardly toward
the pipe 60 and the loading bolt 51 and to further force the
pneumatic air or high pressure gas to further forcefully propel or
fire the projectile 80.
[0035] As shown in FIG. 6, after the projectile 80 has been
propelled or fired, the control device 40 may then be switched or
actuated to control the pneumatic air or high pressure gas to flow
into the further or front hose 43 and then into the front port 23
of the partition 20, and then to force and to move the peripheral
bulge 53 and thus the loading bolt 51 rearwardly toward the end cap
15, and thus for allowing the other projectile 80 to be fed or
supplied into the bore 13 of the barrel 11. As shown in FIG. 4, the
control device 40 may then be switched or actuated to control the
pneumatic air or high pressure gas to flow into the rear hose 41
and the rear port 21 of the partition 20 again.
[0036] When the pneumatic air or high pressure gas flows into the
rear hose 41 and the rear port 21 of the partition 20 again, the
blocking member 70 again may be moved to force onto or against the
extension 55 of the loading bolt 51 in order to selectively block
or enclose the passage 52 of the loading bolt 51 again, and thus to
allow the pneumatic air or high pressure gas to flow into and to be
filled within the inner space 64 of the pipe 60 and the pathway 63
of the conduit 62 and the high pressure storage chamber 14 of the
barrel 11 or of the upper housing 10. The pneumatic air or high
pressure gas may also cause the loading bolt 51 to move the
projectile 80 forwardly toward the firing position again, and may
also force the piston 75 to move rearwardly and to engage with the
end cap 15 again (FIG. 4).
[0037] It is to be noted that, when the trigger 32 is pulled once
by the user, the control device 40 may be actuated or controlled to
first supply the pneumatic air or high pressure gas to the rear
hose 41 (FIG. 4) in order to fill the pneumatic air or high
pressure gas in the inner space 64 of the pipe 60 and the pathway
63 of the conduit 62 and the high pressure storage chamber 14 of
the barrel 11 or of the upper housing 10, and the control device 40
may then switch off the rear hose 41 (FIG. 5) in order to fire the
projectile 80, and then to supply the pneumatic air or high
pressure gas to the front hose 43 (FIG. 6) in order to move the
loading bolt 51 and the piston 75 rearwardly to the original
position as shown in FIG. 4.
[0038] As best shown in FIGS. 3 and 5, it is preferable that the
blocking member 70 includes a peripheral groove 71 formed therein
for forming or defining an outer peripheral flap 72 and for
allowing the outer peripheral flap 72 to be slightly enlarged or
expanded to suitably block the inner space 64 of the pipe 60 and
the pathway 63 of the conduit 62 when the rear hose 41 may be
released or opened. The blocking member 70 may thus be acted or
used as a blocking means or device for selectively blocking the
passage 52 of the loading bolt 51 or the inner space 64 of the pipe
60 or the pathway 63 of the conduit 62.
[0039] Accordingly, the compressed gas gun in accordance with the
present invention includes a simplified pneumatic or air driving
system for simplifying the manufacturing processes of the
compressed gas gun and for reducing the manufacturing cost of the
compressed gas gun.
[0040] Although this invention has been described with a certain
degree of particularity, it is to be understood that the present
disclosure has been made by way of example only and that numerous
changes in the detailed construction and the combination and
arrangement of parts may be resorted to without departing from the
spirit and scope of the invention as hereinafter claimed.
* * * * *