WO2016205838A1 - Barrel or suppressor cooling device - Google Patents

Barrel or suppressor cooling device Download PDF

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Publication number
WO2016205838A1
WO2016205838A1 PCT/ZA2016/000012 ZA2016000012W WO2016205838A1 WO 2016205838 A1 WO2016205838 A1 WO 2016205838A1 ZA 2016000012 W ZA2016000012 W ZA 2016000012W WO 2016205838 A1 WO2016205838 A1 WO 2016205838A1
Authority
WO
WIPO (PCT)
Prior art keywords
barrel
suppressor
cylinder
cooling device
inner cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/ZA2016/000012
Other languages
French (fr)
Inventor
Johannes Tobias MEIRING
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2016205838A1 publication Critical patent/WO2016205838A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A13/00—Cooling or heating systems; Blowing-through of gun barrels; Ventilating systems
    • F41A13/10—Blowers or turbines for evacuating or cooling guns, e.g. driven by combustion gas pressure or recoil
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
    • F41A21/30—Silencers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
    • F41A21/32—Muzzle attachments or glands

Definitions

  • the present invention relates to barrel or suppressor cooling device. More particularly, the present invention relates to a device including counter-rotating cylinders for air- cooling the barrel or suppressor of a gun.
  • GB118,808 "Improvements in cooling devices for machine guns", GB104,530 “Improvements relating to automatic rifles and other guns", GB197.527 “Improved means for cooling machine guns” and US 1 ,242,890 "Barrel cooling device” describe a cooling device including vanes disposed within the airstream of the barrel muzzle, wherein air exiting the barrel passes the vanes, causing the device to rotate and direct air axially along the radial outer surface of the barrel; GB227.806 “Improvements In or relating to quick firing guns” describes a cooling device that uses recoil energy to drive a fan that directs air over the radial outer surface of the barrel;
  • GB 702,878 "Improvements in or relating to cooling apparatus for guns” describes a cooling device that uses a turbine driven by firing gas passing through the barrel to direct a blast of compressed air through the barrel;
  • a drawback of known air-cooling systems is that rotation of fans, blades or barrels induces torque on the weapon. It is an object of the present invention to address this drawback.
  • a barrel or suppressor cooling device for cooling the barrel or suppressor of a weapon, which device includes: an outer cylinder that is, in use, rotatably secured over the barrel or suppressor of a weapon; an inner cylinder disposed co-axially within the outer cylinder, and sized to form an annular gap therebetween, the inner and outer cylinders being axially rotatable relative to each other, at least one outer vane at or near an axial end of the outer cylinder, which outer vane is arranged, in use, to rotate the outer cylinder in one of: (i) a clockwise; or (ii) an anticlockwise direction, upon firing of the weapon; at least one inner vane at or near an axial end of the inner cylinder, which inner vane is arranged, in use, to rotate the inner cylinder in the other of: (i) a clockwise; or (ii) an anticlockwise direction, upon firing of the weapon; at least one outer scoop or outer blade on the outer
  • the outer cylinder includes at least two outer scoops or outer blades, and defines an aperture at or near each such outer scoop or outer blade to permit fluid communication radially through the outer cylinder; and (ii) the inner cylinder includes at least two inner scoops or inner blades, and defines an aperture at or near each such inner scoop or inner blade to permit fluid communication radially through the inner cylinder.
  • the outer scoops or outer blades may extend radially from the outer radial surface of the outer cylinder; and the inner scoops or inner blades may extend radially from the outer radial surface of the inner cylinder.
  • the inner radial surface of the outer cylinder is spaced from the outer radial surface of the inner cylinder by at least the distance that the inner scoops or blades extend radially from the outer radial surface of the inner cylinder.
  • the inner cylinder may be rotatably secured to the outer cylinder with a bearing disposed therebetween.
  • relative rotation of the inner and outer cylinders causes the inner scoops or blades and the outer scoops or blades to direct air radially inwards.
  • the inner cylinder is rotatably secured to a barrel or suppressor of a weapon with the inner radial surface of the inner cylinder radially spaced from the outer radial surface of the barrel or suppressor, in use to permit air to travel axially between the barrel or suppressor on the one hand and the inner cylinder on the other hand.
  • the barrel or suppressor cooling device further defines an outlet, in use, to permit discharge of air from between the barrel or suppressor on the one hand and the inner cylinder on the other hand.
  • Figure 1 is a perspective view of a barrel or suppressor cooling device according to a preferred embodiment of the invention, secured to the barrel of a rifle;
  • Figure 2 is an exploded view of the barrel or suppressor cooling device in Figure 1;
  • a barrel or suppressor cooling device 10 includes inner and outer cylinders 12 and 14 that are rotatable relative to each other.
  • the inner cylinder 12 is right circular cylindrical in shape and includes inner vanes 16 at or near a first axial end.
  • the inner vanes 16 are shaped to cause the inner cylinder 12 to rotate about its axis (i.e. in a clockwise or anti-clockwise direction) as air traveling axially along the inner cylinder 12 (i.e. along a barrel or suppressor) exits the inner cylinder 12 at the first axial end.
  • a series of inner scoops / blades 18 are regularly spaced along and around the inner cylinder 12.
  • the inner cylinder 12 defines an aperture 20 adjacent each inner scoop / blade 18.
  • each inner scoop / blade 18 extends axially between 90 mm and 110mm along the inner cylinder 12.
  • the outer cylinder 14 is similarly right circular cylindrical in shape and includes outer vanes 22 at or near a first axial end.
  • the outer vanes 22 are shaped to cause the outer cylinder 14 to rotate about its axis (in a direction opposite to the first cylinder 12) as air traveling axially along the outer cylinder 14 (i.e. along a barrel or suppressor) exits the outer cylinder 14 at the first axial end.
  • a series of outer scoops / blades 24 are regularly spaced along and around the outer cylinder 14.
  • the outer cylinder 14 defines an aperture 26 adjacent each outer scoop / blade 24.
  • each outer scoop / blade 24 extends axially between 90 mm and 110mm along the outer cylinder 14.
  • FIGS 1 and 2 show the barrel or suppressor cooling device 10 securable to the barrel of a weapon 27, with the inner cyBnder 12 located cc-axially over the barrel 28.
  • the barrel cooling device 10 is secured to the weapon 27 such that the inner cylinder 12 is rotatable relative to the barrel 28.
  • the inner cylinder 12 is sized such that the inner radial surface of the inner cylinder 12 is spaced from the outer radial surface of the barrel 28, to define an annular gap therebetween.
  • the outer cylinder 14 is sized such that the inner radial surface of the outer cylinder 14 is spaced from the outer radial surface of the inner cylinder 12, to define an annular gap therebetween.
  • the annular gap defined between the inner and outer cylinders 12 and 14 is at least as great as the radial protrusion of the inner scoops / blades 18 from the outer radial surface of the inner cylinder 12.
  • a bearing (not shown) is disposed between the inner and outer cylinders 12 and 14 to facilitate relative rotation of the cylinders 12 and 14.
  • the outer vanes 22 are located at or near the muzzle of the barrel 28, projecting into the airstream that escapes the barrel 28 during firing of the weapon 27.
  • the inner vanes 16 are located at or near the muzzle of the barrel 28, disposed between the barrel 28 and the outer vanes 22, and project into the airstream that escapes the barrel 28 during firing of the weapon 27. It will be appreciated that during firing of the weapon 27. the outer and inner vanes 22 and 16 are subjected to highly pressurised air. It is important that the outer and inner vanes 22 and 16 are sufficiently robust to withstand such pressures.
  • the thickness of the outer and inner vanes 22 and 16 may even be greater than the thickness of the inner and outer cylinder 12 and 14 walls.
  • the added weight of the outer and inner vanes 22 and 16 may also assist in maintaining the rotational momentum of the cylinders 12 and 14 during firing of the weapon 27.
  • the outer vanes 122 may extend axialty away from the weapon 127 to act as a flash suppressor.
  • firing of the weapon 27 causes air to exit the muzzle of the barrel 28, which air passes the inner and outer vanes 16 and 22, causing the inner and outer cylinders 12 and 14 to counter-rotate.
  • Rotation of the outer cylinder 14 causes the outer scoops / blades 24 to direct air radially inwards, from outside the outer cylinder 14, via the apertures 26 defined by the outer cylinder 14, into the annular gap between the inner and outer cylinders 12 and 14.
  • rotation of the inner cylinder 12 causes the inner scoops / blades 18 to direct air radially inwards, from the annular gap between the inner and outer cylinders 12 and 14, via the apertures 20 defined by the inner cylinder 12, into the annular gap between the inner cylinder 12 and barrel 28.
  • the barrel cooling device 10 includes counter-rotating cylinders for driving air relative to the barrel 28, the torque generated by angular acceleration of the inner cylinder 12 cancels, to a degree, the opposite torque generated by angular acceleration of the outer cylinder 14, thereby reducing the net torque applied to the weapon 27 by the barrel cooling device 10.
  • the barrel cooling device 10 i.e. the inner and outer cylinders 12 and 14
  • the barrel cooling device 10 is axially movable between: (i) a first position, in which the barrel cooling device 10 is distal the weapon 27 / in which the inner and outer vanes 16 and 22 are distal the barrel 28 muzzle; and (ii) a second position, in which the barrel cooling device 10 is proximal the weapon 27 / in which the inner and outer vanes 16 and 22 are proximal the barrel 28 muzzle.
  • a biasing means in the form of a spring biases the barrel cooling device 10 towards the second position. Firing of the weapon 27 causes the weapon to recoil and the barrel cooling device 10 to move forwards, towards the first position against the bias of the spring.
  • the spring is preferably disposed at the second axial end of the inner and outer cylinders 12 and 14, between the barrel cooling device 10 and the body of the weapon 27. Such relative axial movement of the barrel cooling device 10 and barrel 28 is expected to absorb some of the recoil energy during firing of the weapon 27.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

A barrel or suppressor cooling device (10) for cooling the barrel or suppressor of a weapon includes: (i) an outer cylinder (14) that is, in use, rotatably secured over the barrel or suppressor of a weapon; (ii) an inner cylinder (12) disposed co-axially within the outer cylinder (14), and sized to form an annular gap there between, the inner and outer cylinders (12, 14) being axially rotatable relative to each other; (iii) at least one outer vane (22) at or near an axial end of the outer cylinder (14), which outer vane is arranged, in use, to rotate the outer cylinder in one of: (a) a clockwise; or (b) an anticlockwise direction, upon firing of the weapon; (iv) at least one inner vane (16) at or near an axial end of the inner cylinder (12), which inner vane (16) is arranged, in use, to rotate the inner cylinder (12) in the other of: (a) a clockwise; or (b) an anticlockwise direction, upon firing of the weapon; (v) at least one outer scoop or outer blade (24) on the outer cylinder (14) for directing air relative to the barrel or suppressor upon rotation of the outer cylinder (14); and (vi) at least one inner scoop or inner blade (18) on the inner cylinder (12) for directing relative to the barrel or suppressor upon rotation of the inner cylinder (12).

Description

BARREL OR SUPPRESSOR COOLING DEVICE BACKGROUND
The present invention relates to barrel or suppressor cooling device. More particularly, the present invention relates to a device including counter-rotating cylinders for air- cooling the barrel or suppressor of a gun.
Systems for air-cooling gun barrels are known. For instance:
GB118,808 "Improvements in cooling devices for machine guns", GB104,530 "Improvements relating to automatic rifles and other guns", GB197.527 "Improved means for cooling machine guns" and US 1 ,242,890 "Barrel cooling device" describe a cooling device including vanes disposed within the airstream of the barrel muzzle, wherein air exiting the barrel passes the vanes, causing the device to rotate and direct air axially along the radial outer surface of the barrel; GB227.806 "Improvements In or relating to quick firing guns" describes a cooling device that uses recoil energy to drive a fan that directs air over the radial outer surface of the barrel;
GB 702,878 "Improvements in or relating to cooling apparatus for guns" describes a cooling device that uses a turbine driven by firing gas passing through the barrel to direct a blast of compressed air through the barrel; and
US 6,679,156 "Weapon with rotating barrel" describes a rotating barrel with blades extending from its radial outer surface, wherein firing of the weapon causes the barrel to rotate and dissipate heat into the surrounding air.
A drawback of known air-cooling systems is that rotation of fans, blades or barrels induces torque on the weapon. It is an object of the present invention to address this drawback. SUMMARY OF THE INVENTION
According to a preferred embodiment of the present invention, there is provided a barrel or suppressor cooling device for cooling the barrel or suppressor of a weapon, which device includes: an outer cylinder that is, in use, rotatably secured over the barrel or suppressor of a weapon; an inner cylinder disposed co-axially within the outer cylinder, and sized to form an annular gap therebetween, the inner and outer cylinders being axially rotatable relative to each other, at least one outer vane at or near an axial end of the outer cylinder, which outer vane is arranged, in use, to rotate the outer cylinder in one of: (i) a clockwise; or (ii) an anticlockwise direction, upon firing of the weapon; at least one inner vane at or near an axial end of the inner cylinder, which inner vane is arranged, in use, to rotate the inner cylinder in the other of: (i) a clockwise; or (ii) an anticlockwise direction, upon firing of the weapon; at least one outer scoop or outer blade on the outer cylinder for directing air relative to the barrel or suppressor upon rotation of the outer cylinder, and at least one inner scoop or inner blade on the inner cylinder for directing relative to the barrel or suppressor upon rotation of the inner cylinder.
Typically, (i) the outer cylinder includes at least two outer scoops or outer blades, and defines an aperture at or near each such outer scoop or outer blade to permit fluid communication radially through the outer cylinder; and (ii) the inner cylinder includes at least two inner scoops or inner blades, and defines an aperture at or near each such inner scoop or inner blade to permit fluid communication radially through the inner cylinder. The outer scoops or outer blades may extend radially from the outer radial surface of the outer cylinder; and the inner scoops or inner blades may extend radially from the outer radial surface of the inner cylinder. Generally, the inner radial surface of the outer cylinder is spaced from the outer radial surface of the inner cylinder by at least the distance that the inner scoops or blades extend radially from the outer radial surface of the inner cylinder.
The inner cylinder may be rotatably secured to the outer cylinder with a bearing disposed therebetween.
Preferably, relative rotation of the inner and outer cylinders causes the inner scoops or blades and the outer scoops or blades to direct air radially inwards.
Typically, the inner cylinder is rotatably secured to a barrel or suppressor of a weapon with the inner radial surface of the inner cylinder radially spaced from the outer radial surface of the barrel or suppressor, in use to permit air to travel axially between the barrel or suppressor on the one hand and the inner cylinder on the other hand.
Generally, the barrel or suppressor cooling device further defines an outlet, in use, to permit discharge of air from between the barrel or suppressor on the one hand and the inner cylinder on the other hand.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be described in more detail, by way of an examples only, with reference to the accompanying drawings in which:
Figure 1 is a perspective view of a barrel or suppressor cooling device according to a preferred embodiment of the invention, secured to the barrel of a rifle; and
Figure 2 is an exploded view of the barrel or suppressor cooling device in Figure 1;
and is a perspective view of a barrel or suppressor cooling device according to an alternative embodiment of the invention, secured to the barrel of a rifle, with axially extending outer vanes further acting as a flash suppressor. DESCRIPTION OF THE INVENTION
With reference to Figures 1 and 2 of the drawings, a barrel or suppressor cooling device 10 according to a preferred embodiment of the invention includes inner and outer cylinders 12 and 14 that are rotatable relative to each other.
The inner cylinder 12 is right circular cylindrical in shape and includes inner vanes 16 at or near a first axial end. The inner vanes 16 are shaped to cause the inner cylinder 12 to rotate about its axis (i.e. in a clockwise or anti-clockwise direction) as air traveling axially along the inner cylinder 12 (i.e. along a barrel or suppressor) exits the inner cylinder 12 at the first axial end. A series of inner scoops / blades 18 are regularly spaced along and around the inner cylinder 12. Furthermore, the inner cylinder 12 defines an aperture 20 adjacent each inner scoop / blade 18. Preferably, each inner scoop / blade 18 extends axially between 90 mm and 110mm along the inner cylinder 12.
The outer cylinder 14 is similarly right circular cylindrical in shape and includes outer vanes 22 at or near a first axial end. The outer vanes 22 are shaped to cause the outer cylinder 14 to rotate about its axis (in a direction opposite to the first cylinder 12) as air traveling axially along the outer cylinder 14 (i.e. along a barrel or suppressor) exits the outer cylinder 14 at the first axial end. A series of outer scoops / blades 24 are regularly spaced along and around the outer cylinder 14. Furthermore, the outer cylinder 14 defines an aperture 26 adjacent each outer scoop / blade 24. Preferably, each outer scoop / blade 24 extends axially between 90 mm and 110mm along the outer cylinder 14.
The inner and outer scoops / blades 18 and 24 extend radially from the outer radial surfaces of the inner and outer cylinders 12 and 14, respectively, in a similar manner as a cheese grater. Figures 1 and 2 show the barrel or suppressor cooling device 10 securable to the barrel of a weapon 27, with the inner cyBnder 12 located cc-axially over the barrel 28. The barrel cooling device 10 is secured to the weapon 27 such that the inner cylinder 12 is rotatable relative to the barrel 28. The inner cylinder 12 is sized such that the inner radial surface of the inner cylinder 12 is spaced from the outer radial surface of the barrel 28, to define an annular gap therebetween. The outer cylinder 14 is sized such that the inner radial surface of the outer cylinder 14 is spaced from the outer radial surface of the inner cylinder 12, to define an annular gap therebetween. The annular gap defined between the inner and outer cylinders 12 and 14 is at least as great as the radial protrusion of the inner scoops / blades 18 from the outer radial surface of the inner cylinder 12.
A bearing (not shown) is disposed between the inner and outer cylinders 12 and 14 to facilitate relative rotation of the cylinders 12 and 14. The outer vanes 22 are located at or near the muzzle of the barrel 28, projecting into the airstream that escapes the barrel 28 during firing of the weapon 27. Similarly, the inner vanes 16 are located at or near the muzzle of the barrel 28, disposed between the barrel 28 and the outer vanes 22, and project into the airstream that escapes the barrel 28 during firing of the weapon 27. It will be appreciated that during firing of the weapon 27. the outer and inner vanes 22 and 16 are subjected to highly pressurised air. It is important that the outer and inner vanes 22 and 16 are sufficiently robust to withstand such pressures. The thickness of the outer and inner vanes 22 and 16 may even be greater than the thickness of the inner and outer cylinder 12 and 14 walls. The added weight of the outer and inner vanes 22 and 16 may also assist in maintaining the rotational momentum of the cylinders 12 and 14 during firing of the weapon 27.
With reference to Figure 3, according to an alternative embodiment of the barrel cooling device 110, the outer vanes 122 may extend axialty away from the weapon 127 to act as a flash suppressor.
In use, firing of the weapon 27 causes air to exit the muzzle of the barrel 28, which air passes the inner and outer vanes 16 and 22, causing the inner and outer cylinders 12 and 14 to counter-rotate. Rotation of the outer cylinder 14 causes the outer scoops / blades 24 to direct air radially inwards, from outside the outer cylinder 14, via the apertures 26 defined by the outer cylinder 14, into the annular gap between the inner and outer cylinders 12 and 14. In turn, rotation of the inner cylinder 12 causes the inner scoops / blades 18 to direct air radially inwards, from the annular gap between the inner and outer cylinders 12 and 14, via the apertures 20 defined by the inner cylinder 12, into the annular gap between the inner cylinder 12 and barrel 28. Air driven into the annular gap between the inner cylinder 12 and barrel 28 travels axialty along the barrel 28 towards: (i) outlet ports 30 defined by the first axial end of the inner and/or outer cylinders 12 and/or 14; and/or (ii) the gap between the barrel 28 and inner cylinder 12, through which outlet ports 30 and/or gap the air is discharged from the barrel cooling device 10.
The passing of air over the barrel 28 cools the barrel 28. It will also be appreciated that the outer cylinder 14 provides a relatively cool surface to facilitate handling of the weapon
27 in use.
Since the barrel cooling device 10 includes counter-rotating cylinders for driving air relative to the barrel 28, the torque generated by angular acceleration of the inner cylinder 12 cancels, to a degree, the opposite torque generated by angular acceleration of the outer cylinder 14, thereby reducing the net torque applied to the weapon 27 by the barrel cooling device 10.
Although the Figures show the barrel or suppressor cooling device 10 secured to the barrel 28 of a weapon 27, it will be appreciated that the barrel or suppressor cooling device 10 may similarly be secured to a suppressor that extends from the end of a barrel
28 (not shown) to direct air towards, and thereby cool the suppressor.
In a further alternative embodiment (not shown), the barrel cooling device 10 (i.e. the inner and outer cylinders 12 and 14) are slidably mounted to the barrel 28 so as to permit relative axial movement between the barrel cooling device 10 and the barrel 28. The barrel cooling device 10 is axially movable between: (i) a first position, in which the barrel cooling device 10 is distal the weapon 27 / in which the inner and outer vanes 16 and 22 are distal the barrel 28 muzzle; and (ii) a second position, in which the barrel cooling device 10 is proximal the weapon 27 / in which the inner and outer vanes 16 and 22 are proximal the barrel 28 muzzle. A biasing means (not shown) in the form of a spring biases the barrel cooling device 10 towards the second position. Firing of the weapon 27 causes the weapon to recoil and the barrel cooling device 10 to move forwards, towards the first position against the bias of the spring. The spring is preferably disposed at the second axial end of the inner and outer cylinders 12 and 14, between the barrel cooling device 10 and the body of the weapon 27. Such relative axial movement of the barrel cooling device 10 and barrel 28 is expected to absorb some of the recoil energy during firing of the weapon 27.

Claims

1. A barrel or suppressor cooling device for cooling the barrel or suppressor of a weapon, the device including: an outer cylinder that is, in use, rotatably secured over the barrel or suppressor of a weapon; an inner cylinder disposed co-axialty within the outer cylinder, and si2ed to form an annular gap therebetween, the inner and outer cylinders being axially rotatable relative to each other; at least one outer vane at or near an axial end of the outer cylinder, which outer vane is arranged, in use, to rotate the outer cylinder in one of: (t) a clockwise; or (ii) an anticlockwise direction, upon firing of the weapon; at least one inner vane at or near an axial end of the inner cylinder, which inner vane is arranged, in use, to rotate the inner cylinder in the other of: (i) a clockwise; or (ii) an anticlockwise direction, upon firing of the weapon; at least one outer scoop or outer blade on the outer cylinder for directing air relative to the barrel or suppressor upon rotation of the outer cylinder, and at least one inner scoop or inner blade on the inner cylinder for directing relative to the barrel or suppressor upon rotation of the inner cylinder.
2. A barrel or suppressor cooling device according to claim 1, wherein: (i) the outer cylinder includes at least two outer scoops or outer blades, and defines an aperture at or near each such outer scoop or outer blade to permit fluid communication radially through the outer cylinder; and (ii) the inner cylinder includes at least two inner scoops or inner blades, and defines an aperture at or near each such inner scoop or inner blade to permit fluid communication radially through the inner cylinder.
3. A barrel or suppressor cooling device according to claim 2, wherein: (i) the outer scoops or outer blades extend radially from the outer radial surface of the outer cylinder; and (ii) the inner scoops or inner blades extend radially from the outer radial surface of the inner cylinder.
4. A barrel or suppressor cooling device according to claim 3, wherein the inner radial surface of the outer cylinder is spaced from the outer radial surface of the inner cylinder by at least the distance that the inner scoops or blades extend radially from the outer radial surface of the inner cylinder.
5. A barrel or suppressor cooling device according to claim 4, wherein the inner cylinder is rotatably secured to the outer cylinder.
6. A barrel or suppressor cooling device according to claim 5, wherein a bearing is disposed therebetween.
7. A barrel or suppressor cooling device according to claim 6, wherein relative rotation of the inner and outer cylinders causes the inner scoops or blades and the outer scoops or blades to direct air radially inwards 8. A barret or suppressor cooling device according to claim 7, with the inner cylinder is rotatably secured to a barrel or suppressor of a weapon with the inner radial surface of the inner cylinder radially spaced from the outer radial surface of the barrel or suppressor, in use to permit air to travel axially between the barrel or suppressor on the one hand and the inner cylinder on the other hand. 9. A barrel or suppressor cooling device according to claim 8 further defining an outlet, in use, to permit discharge of air from between the barrel or suppressor on the one hand and the inner cylinder on the other hand.
PCT/ZA2016/000012 2015-06-17 2016-06-08 Barrel or suppressor cooling device Ceased WO2016205838A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA201504384 2015-06-17
ZA2015/04384 2015-06-17

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WO2016205838A1 true WO2016205838A1 (en) 2016-12-22

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11480405B2 (en) * 2017-10-23 2022-10-25 In Ovation Llc Firearm turbine suppressor
US12228360B2 (en) 2021-09-01 2025-02-18 In Ovation Llc Firearm compensator
US12247797B2 (en) 2023-02-15 2025-03-11 Eck Fabrication LLC Cooling device for a gun barrel

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5367940A (en) * 1993-06-03 1994-11-29 Taylor; Henry A. Combined muzzle brake, muzzle climb controller and noise redirector for firearms
US6308609B1 (en) * 1998-12-08 2001-10-30 Robert Bruce Davies Suppressor
US20050262997A1 (en) * 2004-01-20 2005-12-01 John Brixius Gun barrel assembly
WO2011084118A1 (en) * 2010-01-06 2011-07-14 Flodesign, Inc. Controlled-unaided surge and purge suppressors for firearm muzzles
US20120291614A1 (en) * 2011-05-16 2012-11-22 George Koumbis Noise suppressor for firearms

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5367940A (en) * 1993-06-03 1994-11-29 Taylor; Henry A. Combined muzzle brake, muzzle climb controller and noise redirector for firearms
US6308609B1 (en) * 1998-12-08 2001-10-30 Robert Bruce Davies Suppressor
US20050262997A1 (en) * 2004-01-20 2005-12-01 John Brixius Gun barrel assembly
WO2011084118A1 (en) * 2010-01-06 2011-07-14 Flodesign, Inc. Controlled-unaided surge and purge suppressors for firearm muzzles
US20120291614A1 (en) * 2011-05-16 2012-11-22 George Koumbis Noise suppressor for firearms

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11480405B2 (en) * 2017-10-23 2022-10-25 In Ovation Llc Firearm turbine suppressor
US12228360B2 (en) 2021-09-01 2025-02-18 In Ovation Llc Firearm compensator
US12247797B2 (en) 2023-02-15 2025-03-11 Eck Fabrication LLC Cooling device for a gun barrel

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