EP0617786A4 - Hand held grenade launcher. - Google Patents
Hand held grenade launcher.Info
- Publication number
- EP0617786A4 EP0617786A4 EP92921270A EP92921270A EP0617786A4 EP 0617786 A4 EP0617786 A4 EP 0617786A4 EP 92921270 A EP92921270 A EP 92921270A EP 92921270 A EP92921270 A EP 92921270A EP 0617786 A4 EP0617786 A4 EP 0617786A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- adapter
- rod
- receiver
- grenade launcher
- launcher
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41C—SMALLARMS, e.g. PISTOLS, RIFLES; ACCESSORIES THEREFOR
- F41C27/00—Accessories; Details or attachments not otherwise provided for
- F41C27/06—Adaptations of smallarms for firing grenades, e.g. rifle grenades, or for firing riot-control ammunition; Barrel attachments therefor
Definitions
- the present invention relates to grenade launchers and, mo particularly, to a system and method to convert a rif mountable grenade launcher into a hand held stand alo grenade launcher.
- the M79 grenade launcher rifle was the first weapon to co into service which was specifically designed to fire sp
- U.S. Patent 3,507,067 t Into discloses a similar rifle mounted grenade launcher Another rifle mountable grenade launcher, the M203, is als known in the prior art. Hand held stand alone grenad launchers are also known in the prior art including the M7 grenade launcher. Steyr Defense Products of Austria sell M203 type grenade launchers having a folding stock pistol uni without a rifle.
- U.S. Patent 4,733,489 to Kurak discloses method and apparatus for reconfiguring an automatic rifle fo quick attachment and detachment of a grenade launcher.
- the present invention is in regard to an adapter system tha when attached to an unmodified M203 launcher converts it int a stand alone shoulder fired or hand held pistol fired grenad launcher. It is an objective of the present invention t provide a new and improved attachment for a rifle mountabl grenade launcher unit to use the grenade launcher unit as hand held stand alone grenade launcher.
- a grenade launcher comprising a receiver adapter, a launcher unit, and means for fixedly attaching the launcher unit to the receiver adapter.
- the receiver adapter has a recoil surface and an aperture for receiving an adapter rod.
- the launcher unit has a frame, a trigger assembly, and a barrel. A portion of the frame is located adjacent the recoil surface of the receiver adapter.
- the means for fixedly attaching can attach the launcher unit to the receiver adapter and comprises an adapter rod located in both the receiver adapter aperture and a portion of the launcher unit frame.
- a system for converting a rifle mountable grena launcher into a stand alone grenade launcher comprising a receiver adapter, an adapter rod, and a locki screw.
- the receiver adapter has a recoil surface.
- T adapter rod extends from the receiver adapter.
- the locki screw is positionable, at least partially, in a locking scre hole in the adapter rod, spaced from the receiver adapter whereby the adapter rod can be placed into a portion of th grenade launcher unit and the locking screw attached to th rod to sandwich a portion of the grenade launcher unit betwee the receiver adapter and the locking screw.
- method of assembling a grenade launcher comprisin providing a grenade launcher unit having a frame, a barrel and a firing mechanism, the frame having a mounting hol adapted to mount the frame to a barrel of a rifle; inserting rod section of an adapter into the mounting hole of th grenade launcher unit, the rod section having an apertur therein; and inserting a fastening member into the rod sectio aperture to fixedly mount the grenade launcher unit with th adapter.
- Fig. 1 is a side view of a grenade launcher incorporatin features of the present invention shown with a partia cross-sectional view.
- Fig. 2 is an exploded perspective view of components of th grenade launcher shown in Fig. 1.
- Fig. 3 is a cross-sectional view of the receiver adapter o the grenade launcher shown in Fig. 1.
- Fig. 4 is a cross-sectional view of the grenade launche unit's mounting and showing the positions of the adapter rod, locking screw, and roll pin of the embodiment shown in Fig. 1.
- a side view of a grenad launcher 10 incorporating features of the present invention with a partial sectional view.
- the present invention will be described with reference to the single embodiment shown in the drawings, it should be understood that the present invention can be incorporated into different types of embodiments. In addition, any suitable size, shape and type of elements or materials could be used.
- the grenade launcher 10 generally comprises a grenade launcher unit 12, a receiver adapter 14, a pistol grip 16, a buttstock 18, a handguard 20, and connecting rods 22 and 24. However, the buttstock 18 need not be provided.
- the grenade launcher unit 12 is known in the prior art under the military designation M203.
- the unit 12 was originally designed to be mounted to an M16 rifle.
- the unit 12 has a mounting 26 with a channel 27 therethrough originally designed to receive a portion of the barrel of the M16 rifle.
- the unit 12 further includes a firing mechanism 28 inside a frame or housing 29 with a trigger 30, a trigger guard 32, and a barrel 34.
- the barrel 34 can be moved forward relative to the frame 29 for loading, unloading, and ejecting spent grenade casings.
- the handguard 20 is also known in the prior art used with M203 grenade launcher.
- the buttstock 18 and pistol grip 16 are similar to those used with the M16 rifle and are generally known in the art.
- any suitable type of pistol grip or buttstock could be provided including a pistol grip and/or buttstock that is integrally formed with t adapter 14.
- the receiver adapter 14 generally comprised of a suitable material such as metal plastic.
- the adapter 14 has a rear end 36, a front end 3 and a bottom section 40.
- the rear end 36 has two holes and 44 for connecting the buttstock 18 to the rear end 3
- the bottom section 40 has a threaded hole 46 for attaching t pistol grip 16 to the adapter 14, and a slot 48 adapted receive a rear end of the trigger guard 32.
- the front end 3 of the adapter 14 generally comprises an adapter rod hole 5 a recoil surface 52, a handguard recess 54, and a slot 56 f a portion of the grenade launcher unit frame 29.
- the adapt 14 also has a hole 58 extending from the adapter rod hole to an exterior side of the adapter 14. The hole 58 provided for a pin 59 to fixedly mount the adaptor rod 22 the adapter 14.
- the adapter rod 22 is preferably made of metal and has general rod shape.
- the adapter rod 22 has a first end 60 an a second end 62.
- the first end 60 is located in the adapte hole 50 and has a pin hole 64 for receiving a portion of pi 59.
- the pin 59 is press-fit into the holes 58 and 64 t interlock the adapter rod with the adapter.
- an suitable type of means to mount the rod 22 to the adapter 1 could be provided.
- the adapte rod 22 may be integrally formed with the adapter 14.
- Th second end 62 of the adapter rod 22 includes an axial hole 6 which is threaded to fixedly, but removably connect th handguard rod 24 with the adapter rod 22.
- the handguard rod 24 may be integrally formed with the adapte rod 22.
- located between an transverse to the holes 64 and 66 is a a locking screw hole 6 that is threaded and extends entirely through the adapter ro 22.
- the locking screw hole 68 has a locking screw 70 locate therein for fixedly attaching the mounting 26 of the grenad launcher unit 12 with the adapter rod 22.
- the top of the mounting 26 is open such that th adapter rod 22 and mounting 26 can first be positione relative to each other and then the locking screw 70 connecte to the adapter rod 22.
- the length of the screw 70 is large than the diameter of the adapter rod 22.
- the mounting 26 has a slot 74 at th bottom of channel 27 for receiving the bottom 72 of th locking screw 70.
- a roll pi 76 which has a general "C" shaped cross-section.
- the roll pi 76 is mounted to the mounting 26 and acts as a stop surface t stop the leading edge of the locking screw 70.
- the leadin edge of the locking screw is advanced until it is stopped b the roll pin 76. Compression of the roll pin 76 by th locking screw 70 provides a locking torque to the lockin screw to prevent it from backing out.
- a portion 80 of the mounting 26 is located between th bottom 72 of locking screw 70 and the adapter 14.
- Thi arrangement prevents the mounting 26 from axiall longitudinally sliding on the adapter rod 22.
- th mounting 26 and adapter rod 22 are effectively locke together.
- the rear end of the frame 29 is also located in slot 56. This prevents the grenade launcher unit 12 from axially rotating about the adapter rod 22.
- the unit 12 is stationarily fixed to the adapter 14.
- a rear surface 82 of the frame 29 of the grenade launcher unit 12 is located adjacent the recoil surface 52.
- the recoil surface includes areas 84.
- the grenade launcher unit 12 has a barrel bore center axis A that intersects the recoil surface 52 and, the rear surface 82 makes contact with recoil surface 52 at this intersection su that an axis of recoil is provided approximate to the barr bore axis. This minimizes moment forces between the adapt
- the center axis A need not intersect the reco surface 52.
- An area of the barrel bore may be partial aligned in front of the recoil surface 52, or the barrel bo may be totally offset from alignment with the recoil surface
- the handguard 20 is connected to the adapter 14 by use of t handguard rod 24 which has a guide bushing 86 thereon, an e cap 88 mounted to a first end 90 of the rod 24, and a seco end that has threads.
- the end cap 88 is fixed to the fir end 90 by means of a pin (not shown) .
- the second end 92 c be screwed into and out of the adapter rod front hole 66 rotating the end cap 88 which rotates the handguards rod 2
- the guide bushing 86 is captured by the standard M203 fro mounting bracket 94 to control vertical orientation of t handguard assembly.
- a sight assembly 96 has been provid that uses a flip up front sight blade in conjunction with t standard M203 flip up rear sight leaf within the single comm sight base 98 of the assembly 96.
- the blades are not seen Fig. 1 because they are located in a down position, but th pivotally move at pins 100 and 101.
- the sight assembly 96 fixedly mounted to the top front of the handguard 20.
- T handguard 20 has a rear tapered portion that is received adapter recess 54.
- the handguard rod assembly is then screw into the adapter rod 22.
- the front end of the handguard 20 contacted by the handguard rod assembly to apply a locki screw force on the front of the handguard 20 and there fixedly, but removably lock the handguard 20 to the adapter and grenade launcher unit 12.
- the rear end 102 of the trigger guard 32 is captured within area or slot 48 in the adapter 14 and is held in place friction and a mechanical advantage caused by its bein slightly compressed and the location of its pivotal connectio to frame 29.
- the trigger guard 32 is capable of being place in the open position by applying sufficient downward force t overcome the mechanical advantage and friction of slot 48 fo purposes such as when the user is wearing gloves on his han that otherwise would prevent the user from positioning finger in front of the trigger 30.
- the presen invention has various characteristics.
- the method o attaching the adapter and M203 grenade launcher unit is significantly different from previous grenade launche designs.
- the adapter mounting method of mounting the adapter 14 with the grenade launcher unit 12 does not require the use of the M203 front mounting threads.
- the front mounting threads are merely used, in the embodiment shown, for connecting the handguard 20 to the unit 12. Therefore, if the threaded holes are not used on the handguard 20, such as when the handguard is not provided or a different type of handguard is provided, these threaded holes can be utilized for mounting other accessories.
- the M203 unit is not modified and may be readily detached from the adapter and attached to an M16 rifle.
- the size and weight the present design is very close to the M79, thereby providing similar handling characteristics.
- the system recoil is absorbed in line with the barrel bore. Therefore, muzzle climb is minimized.
- the present design can replace the M79 and, because it utilizes M203 grenade launcher units, parts are readily available.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US81171691A | 1991-12-20 | 1991-12-20 | |
US781171 | 1991-12-20 | ||
PCT/US1992/007933 WO1993013379A1 (en) | 1991-12-20 | 1992-09-22 | Hand held grenade launcher |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0617786A1 EP0617786A1 (en) | 1994-10-05 |
EP0617786A4 true EP0617786A4 (en) | 1995-04-19 |
Family
ID=25207355
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92921270A Ceased EP0617786A4 (en) | 1991-12-20 | 1992-09-22 | Hand held grenade launcher. |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0617786A4 (en) |
WO (1) | WO1993013379A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO318240B1 (en) * | 1997-09-11 | 2005-02-21 | R M Equipment Inc | Method and apparatus for attaching a supplementary device to an unaltered host weapon |
FR2840397B1 (en) | 2002-06-03 | 2004-09-10 | Philippe Jean Denis Courty | BI-CANON CHASSIS FOR INDIVIDUAL WEAPONS |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US183993A (en) * | 1876-10-31 | Thomas m | ||
BE355803A (en) * | 1927-11-22 | |||
BE369702A (en) * | 1929-08-12 | |||
US1948511A (en) * | 1932-08-02 | 1934-02-27 | Richard C Coupland | Discharger |
US3557482A (en) * | 1969-02-04 | 1971-01-26 | Us Army | Means for controlling the headspacing of grenade cartridges in a single-shot launcher |
US4788785A (en) * | 1987-09-29 | 1988-12-06 | Napco Industries, Inc. | Foldable stock extension for firearm |
-
1992
- 1992-09-22 WO PCT/US1992/007933 patent/WO1993013379A1/en not_active Application Discontinuation
- 1992-09-22 EP EP92921270A patent/EP0617786A4/en not_active Ceased
Non-Patent Citations (2)
Title |
---|
No further relevant documents disclosed * |
See also references of WO9313379A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1993013379A1 (en) | 1993-07-08 |
EP0617786A1 (en) | 1994-10-05 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 19940617 |
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17Q | First examination report despatched |
Effective date: 19960814 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
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18R | Application refused |
Effective date: 19970904 |