U.S. patent application number 13/760011 was filed with the patent office on 2014-08-07 for suppressor for firearm.
The applicant listed for this patent is David Larry Butler. Invention is credited to David Larry Butler.
Application Number | 20140216237 13/760011 |
Document ID | / |
Family ID | 51258138 |
Filed Date | 2014-08-07 |
United States Patent
Application |
20140216237 |
Kind Code |
A1 |
Butler; David Larry |
August 7, 2014 |
Suppressor For Firearm
Abstract
A firearm noise and recoil suppressor having a plurality of
ported channels in fluid contact with the barrel to redirect some
of the firing gasses for the purpose of distributing the firing
propellant gasses out the discharge end of the firearm. The
channels redirect part of the propellent gasses to exit the barrel
at times other than when the main projectile discharge occurs thus
reducing peak pressure, thus reducing noise and recoil. The
channels are contained within the tubular device, being in fluid
communication with the projectile passageway through ports that
regulate the amount of gas flow. The channels direct gasses to exit
the device through apertures at the projectile exit end of the
device in at an angle of between parallel to the projectile to up
to perpendicularly.
Inventors: |
Butler; David Larry; (Nampa,
ID) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Butler; David Larry |
Nampa |
ID |
US |
|
|
Family ID: |
51258138 |
Appl. No.: |
13/760011 |
Filed: |
February 5, 2013 |
Current U.S.
Class: |
89/14.4 |
Current CPC
Class: |
F41A 21/36 20130101;
F41A 21/30 20130101 |
Class at
Publication: |
89/14.4 |
International
Class: |
F41A 21/30 20060101
F41A021/30 |
Claims
1. An suppressor for connection to a distal end of a muzzle of a
weapon, the device comprising: a main body having a distal end, a
proximal end for connection to, or integration into, the muzzle, a
longitudinal projectile passageway extending through the main body
from the proximal end to the distal end so that the passageway is
an aperture for allowing a weapon projectile to exit from muzzle
through the main body; and a plurality of smaller channels in the
main body comprising conduits extending from, and in fluid
communication with the projectile passageway, to the outer surface
of the main body at the distal end; wherein the additional channels
of said main body are drilled or cast to redirect some discharge
gasses through additional apertures at the distal end of the device
in a manner that disperses the discharge pressure wave of said
weapon over a greater time than normal.
2. An accessory as in claim 1, wherein said plural channels connect
to the projectile passage through open ports of equal or smaller
diameter than that of the channel.
3. An accessory as in claim 1, wherein said plural ports may
connect to the projectile passageway at different locations
relative to each other.
4. An accessory as in claim 1, wherein said plural channels may
traverse the device in differentiable length paths relative to each
other.
5. An accessory as in claim 1, wherein each aperture extends
generally forward from said projectile passageway at an angle to
said longitudinal axis, said angle being in the range of 0-85
degrees.
6. An accessory as in claim 1, wherein the said exhaust apertures
are capable of being oriented for directing gasses from discharge
of the weapon generally upward relative to the muzzle so that the
muzzle is forced downward.
7. An accessory as in claim 1, wherein the said exhaust apertures
are capable of being oriented for directing gasses from discharge
of the weapon in a generally circular motion, radially relative to
the axis of the muzzle so that the muzzle is forced to rotate in a
direction opposite that of the radial forces of the discharge.
8. An accessory as in claim 1, wherein a method of manufacture
would be formed by drilling all ports, channels and apertures from
an external direction to the center of the invention, then plugging
by welding or use of plugs, the resulting external passage holes,
with the exception of the ports and apertures.
9. An accessory to claim 1, wherein a method of manufacture would
by lost wax casting.
10. An suppressor for connection to a distal end of a muzzle of a
weapon, the device comprising: a main body having a distal end, a
proximal end for connection to, or integration into, the muzzle, a
longitudinal projectile passageway extending through the main body
from the proximal end to the distal end so that the passageway is
an aperture for allowing a weapon projectile to exit from muzzle
through the main body; and a plurality of smaller channels in the
main body comprising conduits extending from, and in fluid
communication with the projectile passageway, to the outer surface
of the main body at the distal end; wherein the additional channels
of said main body are formed by a combination of two pieces, an
internal tube or barrel and an encasement sleeve, to redirect some
discharge gasses through additional apertures at the distal end of
the device in a manner that disperses the discharge pressure wave
of said weapon over a greater time than normal.
11. An accessory as in claim 10, wherein said plural channels
connect to the projectile passage through open ports of equal or
smaller diameter than that of the channel.
12. An accessory as in claim 10, wherein said plural ports may
connect to the projectile passageway at different locations
relative to each other.
13. An accessory as in claim 10, wherein said plural channels may
traverse the device in differentiable length paths relative to each
other.
14. An accessory as in claim 10, wherein each aperture extends
generally forward from said projectile passageway at an angle to
said longitudinal axis, said angle being in the range of 0-85
degrees.
15. An accessory as in claim 10, wherein the said exhaust apertures
are capable of being oriented for directing gasses from discharge
of the weapon generally upward relative to the muzzle so that the
muzzle is forced downward.
16. An accessory as in claim 10, wherein the said exhaust apertures
are capable of being oriented for directing gasses from discharge
of the weapon in a generally circular motion relative to the axis
of the muzzle so that the muzzle is forced to rotate in a direction
opposite that of the radial forces of the discharge.
17. An accessory as in claim 10, wherein a method of manufacture
would be by machining all ports, channels and apertures in the
internal portion, or barrel. Then the sleeves is attached to encase
the inner portion, or barrel, wherein the internal diameter of the
sleeve is equal to the exterior diameter of the inner portion or
barrel. The sleeve is attached to the inner portion, or barrel, by
means of welding or treading.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to firearm noise and recoil
suppressors. When a firearm is fired, a large sharp pressure front
is produced that is the dominate cause of noise and recoil. The
invention is a device that attaches to the barrel of a firearm,
with the purpose of reducing muzzle noise and recoil by venting
gasses through different size ports and different length channels
so that the gasses exit the muzzle at different time intervals, so
as to reduce the peak muzzle pressure.
[0003] 2. Related Art
[0004] Conventional firearm suppressors are typically generally
tubular cylinders, with an inner and an outer wall, with several
expansion chambers or baffles between the walls. This assembly is
attached to a firearm barrel. Upon discharge of the weapon some of
the gasses flow through holes in the inner wall of the suppressor,
then through the expansion chambers or baffles, therefore, allow
the exhaust gas to expand inside the suppressor, then to be vented
through holes in the outside wall. Optionally, conventional devices
may include additional material such as washers, screens or "steel
wool" type material inside the device to further suppress the noise
of the discharge. These devices are typically large in both cross
sectional diameter and length.
SUMMARY OF THE INVENTION
[0005] When a conventional firearm is fired, cartridge propellent
is ignited and then converts to an expanding gas that propels the
projectile through the barrel. When the projectile exits the
barrel, the largest amount of this gas exits the barrel immediately
afterward, causing a large sharp pressure wave. In typical cases,
this wave is the dominant contribution to noise and recoil.
Distributing this pressure wave over a longer time will reduce the
peak pressure, thus suppressing noise and distributing recoil. This
can be achieved by bypassing some of the exhaust gas and
redirecting it to exit the device before and/or after the
projectile has left the device. The end result is that, although
the total volume of gas released is unchanged, the distribution of
said gas is such that the peak pressure wave is reduced. Thus a
longer gas exit time is achieved, and thus lower peak pressure is
achieved. With distributed pressure, recoil is likewise distributed
so as to deliver more of a "push" than "kick" to the shooter.
Unlike traditional suppressors, this is achieved by using variable
length channels that redirect the exhaust gasses.
[0006] The invented device connects to the muzzle end of a firearm
and has a longitudinal passageway adapted to allow a projectile to
exit the muzzle through the invented device. The device consists of
a longitudinal tube or assembly that includes an inner passageway
for the projectile exit. The projectile exit is at the outer
(distal) end of the longitudinal passageway. The body of the device
typically consists of a tube of some thickness, that within contain
the channels. The ports connect the inner projectile passage to the
channels. The channels traverse the device, with the channels being
fully enclosed within the device, except at the ports and the
apertures. The channels connect to the apertures at the projectile
exit end of the device. The ports, channels and apertures are all
open (hollow) to allow for the flow of gasses. The invented device
has a plurality of ports and channels with apertures in fluid
communication with the projectile passageway for directing gasses
from the weapon discharge in desired directions and desired time
intervals. Said ports, channels and apertures are preferably
circular, oval, or otherwise-shaped conduit extending from the
projectile passageway to open at an upper or forward, outer surface
of the device. Said apertures preferably extend in a direction that
has a forward component, however said apertures may comprise exits
that are slanted at some angle up to perpendicular, relative to the
longitudinal axis of the bore of the muzzle/barrel and, hence, the
longitudinal axis of the projectile passageway. We define the
longitudinal axis of the device and the projectile passageway as
being the same. Therefore, one may describe the additional
apertures as comprising exits that extend at angles ranging from
acute angles to somewhat obtuse angles relative to the forward
longitudinal axis. Preferably, the additional apertures comprise
surfaces/conduits that extend in a range from forward at an angle
of 0 degrees, up to 85 degrees.
[0007] Said ports and channels and apertures are integrated into
the device in such a way that the gasses are not all released from
the projectile passageway opening, but rather they redirect some
gas through the additional apertures by means of the channels. This
redirection typically, but not necessarily, includes the use of
ports, at the inlet of the channels that are sized and formed to
allow a calibrated amount of gas to flow through each channel. Each
channel is typically of different lengths and/or have a different
routing. Multiple ports and channels are typically used, each of
which said ports and channels could be of different size, length
and direction. The multiple ports and channels allow for multiple
differential delays in the exit of the gasses from the device.
[0008] The ports and channels and apertures are integrated in an
arrangement that is conducive to the desired functionality of the
preferred noise suppression and recoil reduction, while minimizing
size. The ports are on the surface of the projectile passageway
and, opened to the projectile passageway on an inner (lower) end
and open to the air above the muzzle brake at an outer (distal)
end, they provide the desired suppressor functionality, that is,
providing a distributed pressure force on the muzzle end. The
gas-directing apertures may be sized, and may have surface
curvature, for fine-tuning the forces applied to the muzzle by the
gasses, and/or for controlling noise and recoil directed back to
the shooter. For example, applying several ports at different
locations on the lower end of the device, and connecting the ports
to several channels, and routing the channels such that they
increase the length of the path of the gas to exit, and connecting
those to apertures at the muzzle end of the barrel, will provide a
path for some amount of the gasses to exit the barrel at times
other than the normal peak firing wavefront, thus providing the
said benefit of a reduced pressure wave, which will provide for
reduced noise and recoil. Also, depending on the chosen size, shape
and radial orientation (perpendicular, or forward, or slanting) of
the apertures, additional forces on the muzzle may be created. For
example, if said apertures are perpendicular to the longitudinal
axis and in an upward orientation, forces from impingement of gases
on the perpendicular surfaces are expected to serve as anti-recoil
forces, by forcing the muzzle downward by the upward "jet" of
gasses, serving as anti-muzzle-climb forces. This sizing and
curvature may be determined by one of skill in the art without
undue experimentation.
[0009] The preferred embodiment does not include baffles or
expansion chambers inside the device, but baffles, and/or expansion
chambers, or other structure may be added as an option.
[0010] The projectile passageway may be a generally tubular or
cylindrical surface, or other surface forming a hollow space
extending generally from one end of the device to the other, from
which the gas-directing ports and channels branch off The preferred
embodiment of the projectile passageway is a slightly larger
diameter than the bore axis. The projectile passageway may be
smooth, or may have some texture, such as lands and groves, or
spirals, for example.
[0011] The preferred embodiment of the invention is typically of
smaller cross sectional area, relative to the bore axis, when
compared to conventional baffled suppressors. This is due to the
general use of only channels in the invention, instead of baffles
or chambers. Channels are smaller in diameter than the bore of the
specific firearm application, thus making for a smaller diameter
device. This invention should be suitable for use with firearms of
.22 caliber to .50 caliber.
[0012] Additionally, the ports, channels and gas exit apertures,
can be designed with parameters (diameter, shape, routing and
length) that are specific to a single applicable firearm and
cartridge. For example, a specific high power rifle that is
shooting a particular standard rifle cartridge, may be calculated
to best benefit from the application of a specific number of
channels that are each of a specific lengths, diameter and exit
aperture direction.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013] FIG. 1 is a cross sectional view of one embodiment of the
invention, showing the projectile exiting the projectile passage
and gasses leaving the passage and apertures.
[0014] FIG. 2 is a cross sectional view of an alternate embodiment
of the invention, showing the projectile exiting the projectile
passage and gasses leaving the passage and apertures.
[0015] FIG. 3 is a view off the internal portion of the alternate
embodiment in FIG. 2 that includes the ports and channels.
[0016] FIG. 4 is a view of the hollow cylindrical sleeve that
encases the internal portion of the alternative embodiment shown in
FIG. 2.
[0017] FIG. 5 is a cross sectional view of the alternative
embodiment in FIG. 2, with the sleeve of FIG. 4 encasing the
internal portion shown in FIG. 3.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0018] In FIG. 1, there is shown one embodiment of the present
invention and is designated generally by the number 10. The
invention housing is indicated by 11 with the invention being
connected to the distal end of the muzzle at the portion 12, by
various mean, for example, a threaded connection or a pinned
connection or other means, including conventional connections for
suppressors. The device may be built already attached or integral
with the barrel. The main projectile passageway is 13. The bullet
exits the device through the muzzle port 14, with an illustration
of the projectile shown 15. The main functions of the invented
device comprise exiting of the projectile via a passageway through
the device, while exiting and directing some portion of the gasses
through the ports 16 and channels 17 and finally through the
apertures 18. The channels shown are of different lengths, to
represent just one example of the many possible implementations.
This embodiment could be manufactured by casting, or by drilling
the ports and channels externally then subsequently filling the
external openings, by welding or plugging, except leaving the ports
and apertures open. In this example only two ports 16, channels 17
and apertures 18 are shown for simplicity, where the preferred
embodiment of the invention could include from two to ten of said
ports 16, channels 17 and apertures 18.
[0019] In FIG. 2 is shown another possible embodiment of the
present invention. Again the invention is connected to the distal
end of the muzzle at the portion 12, by various mean, for example,
a threaded connection or a pinned connection or other means,
including conventional connections for suppressors. The main
projectile passageway is 13. The bullet exits the device through
the muzzle port 14, with an illustration of the projectile shown
15. In this case where the ports 16 and channels 17 are machined
into the outside cylindrical section of the inner portion of the
device, which could be the barrel itself The channels are
lengthened by spiraling them around the inner portion to increase
their length, thus increasing the exhaust gas exit delay out the
apertures 18. In this example only one port 16, channel 17 and
aperture 18 is shown for simplicity, where the preferred embodiment
of the invention could include from two to ten of said ports 16,
channels 17 and apertures 18.
[0020] In FIG. 3 is shown the internal portion 21 of the invention
shown in FIG. 2. This portion could be the barrel itself In this
case the ports 16 and channels 17 are machined into the outside
cylindrical section of the inner portion 21 of the device. The
channels 17 are lengthened by spiraling them around the inner
portion to increase their length, thus increasing the exhaust gas
exit delay out the apertures 18.
[0021] In FIG. 4 is the cylindrical sleeve 20 that will encase the
internal portion 21 of FIG. 3 which will provide an external
containment of the channels.
[0022] In FIG. 5 is shown a partial cross sectional the inner
portion 21 of the second embodiment encased within the cylindrical
sleeve 20, such that the sleeve 20 is cross sectioned. These two
portions assembled show the encased embodiment shown in FIG. 2.
This embodiment allows for the internal portion that includes the
ports to be drilled and the channels to be machined on the exterior
of a sleeve, or the barrel itself. This portion is then encased
with the sleeve to complete the containment of the channels. This
method allows for simple construction and customization of the port
size and channel lengths, as well as the apertures.
* * * * *