US20090107325A1 - Joint between a sound suppressor and a barrel of a firearm - Google Patents

Joint between a sound suppressor and a barrel of a firearm Download PDF

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Publication number
US20090107325A1
US20090107325A1 US12/207,294 US20729408A US2009107325A1 US 20090107325 A1 US20090107325 A1 US 20090107325A1 US 20729408 A US20729408 A US 20729408A US 2009107325 A1 US2009107325 A1 US 2009107325A1
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US
United States
Prior art keywords
end part
adapter
suppressor
joint
forward end
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.)
Abandoned
Application number
US12/207,294
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English (en)
Inventor
Peter Ostergaard POULSEN
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.)
SAI - SMALL ARMS INDUSTRIES APS
Original Assignee
SAI - SMALL ARMS INDUSTRIES APS
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 SAI - SMALL ARMS INDUSTRIES APS filed Critical SAI - SMALL ARMS INDUSTRIES APS
Priority to US12/207,294 priority Critical patent/US20090107325A1/en
Assigned to SAI - SMALL ARMS INDUSTRIES APS reassignment SAI - SMALL ARMS INDUSTRIES APS ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: POULSEN, PETER OSTERGAARD
Priority to US12/410,229 priority patent/US20090193963A1/en
Publication of US20090107325A1 publication Critical patent/US20090107325A1/en
Abandoned 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
    • 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
    • F41A21/325—Mountings for muzzle attachments

Definitions

  • the invention relates to a joint between a suppressor and a barrel of a firearm.
  • the joint comprises a substantially cylindrical adapter defining an axis, said adapter has a rear end part coaxially secured to the muzzle of the barrel and a forward end part for receiving the suppressor, a through bore formed in the adapter in line with the bore in the barrel, and a connection element arranged at the rear end part of the suppressor and fits the forward end part of the adapter.
  • a suppressor affects however the operation of the respective firearm with regard to the precision of the firing when the through opening of the suppressor is not sufficiently in line with the through bore of the barrel.
  • the suppressor conventionally is assembled with the outside of the barrel or on the outside of an adapter attached to the barrel. This assembling method causes however difficulties in keeping the through bore of the suppressor sufficiently in line with the through bore of the barrel. Also, such connection is difficult to seal sufficiently with the unfavourable result that gunpowder dust and fouling easily could be blown out of the connection and up into the face of the marksman firing a bullet, thereby harming the marksman and making him more or less unfit for operating the firearm with the preciseness required.
  • US patent application 2007/0095198 discloses an arrangement for attaching a suppressor to an enlarged end portion of the barrel of a firearm by means of an outside connection. This known arrangement involves a slow and troublesome operation of attaching the suppressor on the muzzle of the barrel of a firearm. The arrangement is moreover complicated and costly to produce and maintain. Thus, improvements in these type devices are needed.
  • the joint is used for attaching a suppressor to a barrel of a firearm, in which the gas sealing between the suppressor and the barrel is more effective than hitherto known.
  • the attachment is made by means of which the through opening of the suppressor is exactly in line with the through opening of the barrel.
  • the joint connects and enables the suppressor to be securely retained on the barrel of an firearm and can easily be removed when necessary or desired.
  • the joint allows the suppressor to be easily and quickly attached to a barrel of a firearm.
  • the joint has a simple construction and is inexpensive to produce.
  • the joint includes a connection element that has a disc-shaped forward end part and a tubular rear end part, with the tubular rear end part of the connection element coaxially fitting and receiving the forward end part of the adapter.
  • a through bore is formed in the disc-shaped forward end part of the connection element coaxially with the tubular rear end part.
  • a tube section is coaxially attached to the connection element with a forward end part in contact with the forward end part of the adapter and with a rear end part in the mounted position of the suppressor.
  • the through bore of the suppressor is exactly in line with the through bore of the barrel in the mounted position of the suppressor, and that the joint simultaneously is effectively sealed against discharging of e.g., gunpowder dust and fouling.
  • the rear end part of the tube section can extend into the through bore of the adapter whereby the through opening of the suppressor effectively can be lined up with the through opening of the barrel.
  • the forward part of the through bore of the adapter can be conical and the rear end part of the tube section can have a corresponding conicity whereby the tube section automatically is lined up and sealingly mounted in the through bore of the adapter when mounting the suppressor onto the adapter.
  • the conical part of the through bore could e.g. have an inclining angle of 8° to 14° and in an preferred embodiment the inclination could be 10° to 12°.
  • the forward end part of the tube section can, according to the present invention, be attached to the through bore of the disc-shaped forward end part of the connection element by means of an outer thread on the tube section and an inner thread in the through bore of the forward end part of the connection element.
  • Another advantage consists in that the axial position of the tube section can be adjusted to the actual geometry of the joint by screwing the tube section in or out of the forward end part of the connection element.
  • the securing of the suppressor to the adapter can in an expedient embodiment according to the present invention take place by turning the suppressor in relation to the adapter in the opposite direction of the direction in which the outer thread of the tube section is screwed into the inner thread of the disc-shaped forward end part of the connection element.
  • the suppressor is dismounted by turning it in the opposite direction of the mounting direction whereby the tube section now is screwed into the suppressor end, and the tight connection between the two conical surfaces of the adapter and the tube section is easily released.
  • the adapter can, according to the present invention, be provided with a ring-shaped groove and at least one projection on the inner side of the tubular rear end part of the connection element engaging said ring-shaped groove in the mounted position of the suppressor. Furthermore, the adapter may advantageously be provided with a longitudinally extending slot, arranged so that the at least one projection on the tubular rear end part of the connection element fits slidingly into this slot.
  • the suppressor is then mounted on the adapter by sliding the tubular rear end part of the connection element axially along the adapter with the at least one projection in engagement with said longitudinally extending slot and at the end of the slot turning the suppressor in relation to the adapter so that the at least one projection engages said ring-shaped groove.
  • the suppressor now is securely fastened to the adapter.
  • the suppressor can be easily dismounted by simply reversing the above-mentioned mounting steps.
  • the adapter can in one embodiment be formed as a tube only, but in another embodiment the adapter can be formed as a flash hider directing hot escaping gases from the barrel end and reducing the visibility of the blazing muzzle flash which occurs upon firing.
  • a large variety of suppressors could be mounted onto a barrel or flash hider using the present joint e.g. a flash hider used on M16 series rifles.
  • FIG. 1 shows schematically a fragment of an axial section of a barrel of a firearm being mounted with a suppressor
  • FIG. 2 shows a cross section of the same taken along the line II-II in FIG. 1 ,
  • FIG. 3 shows a cross section of the same taken along the line III-III in FIG. 4 ;
  • FIG. 4 shows schematically a fragment of an axial section of the barrel shown in FIG. 1 with the suppressor in mounted position on the barrel
  • FIGS. 1-4 show a joint 1 between a barrel 2 of a firearm (not shown) and a suppressor 3 .
  • the barrel and the suppressor are shown in fragments only.
  • the barrel is formed with a reduced muzzle 4 .
  • a rear end part 5 of an adapter 6 with a mainly cylindrical outer outline, is firmly attached to said muzzle.
  • a forward end part 7 of the adapter is arranged for removable receiving the suppressor 3 .
  • the suppressor 3 is supported by the forward part 7 of the adapter 6 in order for the suppressor 3 not to be misaligned.
  • the adapter is moreover formed with a through bore 8 with a conical forward end part 9 , three longitudinally extending slots 10 and a ring-formed groove 11 .
  • the suppressor has an elongated forward part 12 having inter alia an expansion chamber and a number of baffles (not shown) and a rear end part in form of a connection element 13 for mounting the suppressor on the forward end part of the adapter.
  • connection element 13 has a disc-shaped forward end part 14 and a tubular rear end part 15 coaxially fitting the forward end part of the adapter.
  • a through bore 16 is formed in the disc-shaped forward end part 14 of the connection element 13 coaxially with the tubular rear end part.
  • An inner thread 17 is formed in said through bore 16 .
  • a tube section 18 has a forward end part 19 and a rear end part 22 .
  • the forward end part 19 is formed with an outer thread 21 fitting the inner thread 17 formed in the through bore 16 of the disc-shaped forward end part 14 of the connection element 13 .
  • the rear end part 22 of the tube section 18 is formed as a cone with the same conicity as the conical forward end part of the through bore in the adapter.
  • the conical inclination could e.g. be 8° to 14° but it is preferred that the match each other in order to ensure at sealingly tight fit.
  • the inner side of the tubular rear end part of the connection element is formed with three projections 23 fitting the three longitudinally extending slot and ring-formed groove formed in the adapter.
  • the suppressor 3 is mounted onto the adapter 6 in the following way.
  • the tube section 18 is screwed somewhat in or out of the forward end part 14 of the connection element 13 until the axial position of the tube section fits the actual geometry of the joint 1 .
  • the tubular rear end part 15 of the connection element 13 then is moved slidingly along the adapter with the three projections 23 in engagement with the longitudinally extending slots 10 .
  • the suppressor is, when arriving the end of the slots, turned in relation to the adapter so that the projections engage the ring-formed groove 11 .
  • the suppressor now is securely fastened to the adapter.
  • the securing turning of suppressor takes place in one direction while the tube section is screwed into the disc-shaped forward end part of the connection element in the opposite direction whereby the conical rear end part of the tube section automatically is driven against the conical forward part of the through bore of the adapter with a relatively large force resulting in that the joint safely is being sealed. If the joint seems to loose for the operator of the firearm it is possible to adjust the tubular section 18 in relation to the connection element 13 of suppressor 3 . Thereby, the tightness of the fit between the conical part 22 of the tube section 18 and the conical part 9 of the adapter is ensured. Visa versa the fit could be loosened if found too tight.
  • the two conical surfaces 9 and 22 of the adapter and the tube section secure that the tube section automatically is lined up and sealed in the through bore of the adapter when mounting the suppressor onto the adapter.
  • the suppressor is by dismounting turned into the opposite direction of the securing direction whereby the tube section now is screwed into connection element of the suppressor and the tight connection between the two conical surfaces of the adapter and the tube section safely is released, that means without damaging the joint in any way.
  • the adapter is formed as a flash hider for directing hot escaping gases from the barrel end and reducing the visibility of the blazing muzzle flash which occurs upon firing.
  • the flash hider is formed with a number of slits 24 extending radially outwards from the through bore of the adapter.
  • the slits 24 can, within the scope of the present invention, have any suitable shape and exist in any suitable numbers. In the present case only one slit can be seen. This slit is debauching into the upper longitudinal extending slot 10 .
  • the slits 24 does however not need to debouch into the slot but can debouch in other areas of the flash hider, preferable in the upper part of the adapter for damping the tendency of the muzzle to move upwards when firing a bullet.
  • the present invention can be used with a wide variety of forearms.
  • M16 rifles are produced in various types and it is obvious that within the scope of the joint of the present invention alterations could be made in order to use a tube section 18 for achieving a sealingly tight fit between an adapter e.g. a flash hider or flash suppressor and a sound suppressor or silencer.
  • an adapter e.g. a flash hider or flash suppressor and a sound suppressor or silencer.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Telescopes (AREA)
  • Prostheses (AREA)
US12/207,294 2007-09-11 2008-09-09 Joint between a sound suppressor and a barrel of a firearm Abandoned US20090107325A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/207,294 US20090107325A1 (en) 2007-09-11 2008-09-09 Joint between a sound suppressor and a barrel of a firearm
US12/410,229 US20090193963A1 (en) 2007-09-11 2009-03-24 Joint between a sound suppressor and a barrel of a firearm

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP07116152A EP2037204A1 (fr) 2007-09-11 2007-09-11 Joint entre un silencieux et le canon d'une arme à feu
EPEP07116152.5 2007-09-11
US2270608P 2008-01-22 2008-01-22
US12/207,294 US20090107325A1 (en) 2007-09-11 2008-09-09 Joint between a sound suppressor and a barrel of a firearm

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/410,229 Continuation-In-Part US20090193963A1 (en) 2007-09-11 2009-03-24 Joint between a sound suppressor and a barrel of a firearm

Publications (1)

Publication Number Publication Date
US20090107325A1 true US20090107325A1 (en) 2009-04-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
US12/207,294 Abandoned US20090107325A1 (en) 2007-09-11 2008-09-09 Joint between a sound suppressor and a barrel of a firearm

Country Status (2)

Country Link
US (1) US20090107325A1 (fr)
EP (1) EP2037204A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100282056A1 (en) * 2008-01-16 2010-11-11 Troika International Co., Ltd. Gun flash hider
US10612878B1 (en) 2018-09-06 2020-04-07 Savage Arms, Inc. Muzzle device, firearm barrel, and method of attachment

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011010639B4 (de) * 2011-02-09 2015-07-23 Oliver Fischer Schalldämpfer für eine Handfeuerwaffe

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5433133A (en) * 1994-03-07 1995-07-18 La France; Timothy F. Quick detachable gun barrel coupling member
US6973863B1 (en) * 2003-03-12 2005-12-13 Fn Herstal Adaptor for firing blank ammunition

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1354416A (en) * 1919-10-21 1920-09-28 Oliver Stacy Silencer-coupling
CZ3358U1 (cs) * 1994-10-14 1995-05-30 Bohumil Ing. Planka Zařízení k upevnění úsfového nástavce na válcovou hlaveň střelné zbraně
DE19935929C1 (de) * 1999-07-30 2001-02-15 Heckler & Koch Gmbh Halterung zur Befestigung eines Schalldämpfers am Lauf einer Handfeuerwaffe

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5433133A (en) * 1994-03-07 1995-07-18 La France; Timothy F. Quick detachable gun barrel coupling member
US6973863B1 (en) * 2003-03-12 2005-12-13 Fn Herstal Adaptor for firing blank ammunition

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100282056A1 (en) * 2008-01-16 2010-11-11 Troika International Co., Ltd. Gun flash hider
US7870815B2 (en) * 2008-01-16 2011-01-18 Troika International Co., Ltd. Gun flash hider
US10612878B1 (en) 2018-09-06 2020-04-07 Savage Arms, Inc. Muzzle device, firearm barrel, and method of attachment

Also Published As

Publication number Publication date
EP2037204A1 (fr) 2009-03-18

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SAI - SMALL ARMS INDUSTRIES APS, DENMARK

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:POULSEN, PETER OSTERGAARD;REEL/FRAME:022016/0843

Effective date: 20080908

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION