U.S. patent application number 11/378321 was filed with the patent office on 2006-12-07 for device for coupling a grenade launcher with an automatic rifle.
This patent application is currently assigned to FABBRICA D' ARMI PIETRO BERETTS S.p.A.. Invention is credited to Ulrich Zedrosser.
Application Number | 20060272193 11/378321 |
Document ID | / |
Family ID | 34981657 |
Filed Date | 2006-12-07 |
United States Patent
Application |
20060272193 |
Kind Code |
A1 |
Zedrosser; Ulrich |
December 7, 2006 |
Device for coupling a grenade launcher with an automatic rifle
Abstract
A device for coupling a grenade launcher with an automatic rifle
comprises a gun fore-end of the automatic rifle integral to a
barrel of the automatic rifle and having externally a first portion
of mutual shape-coupling means between a frame of the grenade
launcher and the gun fore-end. A second portion of the mutual
coupling means is externally associated to a frame of the grenade
launcher. The first and second portions mutually slide one inside
the other along a direction which is parallel to the barrel of the
automatic rifle in order to fasten the grenade launcher to the
automatic rifle in a direction which is transversal to the barrel
of the automatic rifle. The first portion comprises a track
directly associated to the gun fore-end and the second portion
comprises a sliding seat being defined in a frame of the grenade
launcher. The sliding seat is capable of being slidingly engaged on
the track from the front end to the rear end of the track.
Inventors: |
Zedrosser; Ulrich; (Gardone
Val Trompia (Brescia), IT) |
Correspondence
Address: |
HOGAN & HARTSON LLP;IP GROUP, COLUMBIA SQUARE
555 THIRTEENTH STREET, N.W.
WASHINGTON
DC
20004
US
|
Assignee: |
FABBRICA D' ARMI PIETRO BERETTS
S.p.A.
Gardone Val Trompia (Brescia)
IT
|
Family ID: |
34981657 |
Appl. No.: |
11/378321 |
Filed: |
March 20, 2006 |
Current U.S.
Class: |
42/105 |
Current CPC
Class: |
F41C 27/06 20130101 |
Class at
Publication: |
042/105 |
International
Class: |
F41C 27/06 20060101
F41C027/06 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 13, 2005 |
EP |
05425213.5 |
Claims
1. A device for coupling a grenade launcher with an automatic
rifle, said coupling device comprising a gun fore-end of said
automatic rifle integral to a barrel of the same automatic rifle
and having a first portion of mutual shape coupling means
externally between a frame of the grenade launcher and said gun
fore-end, said coupling device further comprising a second portion
of said mutual coupling means being externally associated to a
frame of grenade launcher, said first and second portions mutually
sliding one inside the other along a direction which is parallel to
barrel of automatic rifle in order to fasten grenade launcher to
automatic rifle in a direction which is transversal to barrel of
automatic rifle.
2. The device for coupling a grenade launcher with an automatic
rifle according to claim 1, wherein said first portion comprises a
track being directly associated to said gun fore-end and extending
on the lower side of and parallel to the barrel of the automatic
rifle between a front end and a rear end, and wherein said second
portion comprises a sliding seat being defined in a frame of the
grenade launcher and extending in the upper side of the grenade
launcher and parallel to the barrel of the automatic rifle between
a front end and a rear end, said sliding seat being capable of
being slidingly engaged on track from the front end to the rear end
of the track in order to fasten grenade launcher to the automatic
rifle in a direction which is transversal to the barrel of the
automatic rifle.
3. The device for coupling a grenade launcher with an automatic
rifle according to claim 2, wherein said rear end of said sliding
seat defines an abutment surface adapted to abut against a striking
surface being associated to said gun fore-end and located at a
portion directly associated to a frame of the automatic rifle.
4. The device for coupling a grenade launcher with an automatic
rifle according to claim 3, wherein said striking surface is
located, in an assembled position of the grenade launcher and
automatic rifle, on the front side of interference means adapted to
make a constraint for the relative sliding motion between the
automatic rifle and the grenade launcher, parallel to the barrel of
the automatic rifle.
5. The device for coupling a grenade launcher with an automatic
rifle according to claim 4, wherein said interference means
comprise an interference pivot being transversally inserted between
the frame of the grenade launcher and said gun fore-end.
6. The device for coupling a grenade launcher with an automatic
rifle according to claim 5, wherein said interference pivot is
located on the rear side of the mutual abutment and striking
surfaces of said sliding seat and said track.
7. The device for coupling a grenade launcher with an automatic
rifle according to claim 5, wherein said interference means
comprise at least one elastic element adapted to transversally lock
said interference pivot between the frame of the grenade launcher
and said gun fore-end.
8. The device for coupling a grenade launcher with an automatic
rifle according to claim 7, wherein said elastic element is housed
inside said interference pivot and comprises a coupling portion
being adapted to pass through an aperture of said interference
pivot.
9. The device for coupling a grenade launcher with an automatic
rifle according claim 5, comprising at least one fastening wing
extending from the frame of the grenade launcher on the rear side
of its respective sliding seat and comprising a housing for said
interference pivot.
10. The device for coupling a grenade launcher with an automatic
rifle according to claim 9, wherein said frame of the grenade
launcher comprises two fastening wings rear side and on the
opposite sides of their respective sliding seat, and wherein said
fastening wings comprise their respective housings for said
interference pivot and are adapted to be arranged on their
respective opposite sides of said gun fore-end.
11. The device for coupling a grenade launcher with an automatic
rifle according to claim 5, wherein said gun fore-end comprises a
tooth extending in the lower and rear sides of the gun fore-end in
order to be inserted into a slot of a frame of the automatic rifle
located at the lower side of barrel of the same automatic rifle,
said tooth comprising a housing slot for said interference
pivot.
12. The device for coupling a grenade launcher with an automatic
rifle according to claim 11, wherein said tooth is arranged as a
rear and lower extension of said track.
13. The device for coupling a grenade launcher with an automatic
rifle according to claim 11 or 12, wherein said tooth is directly
fastened onto the frame of the automatic rifle in order to define a
rear fastening point for said gun fore-end.
14. The device for coupling a grenade launcher with an automatic
rifle according to claim 13, wherein said rear fastening point of
said gun fore-end directly on the frame of automatic rifle allows
the gun fore-end to be free to rotate around an axis transversal to
the barrel of the automatic rifle.
15. The device for coupling a grenade launcher with an automatic
rifle according to claim 14, wherein said rear fastening point
comprises a coupling pivot being transversally inserted between the
gun fore-end and frame of the automatic rifle, at the tooth of the
gun fore-end.
16. The device for coupling a grenade launcher with an automatic
rifle according to claim 15, wherein said tooth has a cross hole in
order to accommodate the coupling pivot.
17. The device for coupling a grenade launcher with an automatic
rifle according to claim 16, wherein the cross hole of said tooth
is located at the rear side of the housing slot of the interference
pivot of the interference means.
18. The device for coupling a grenade launcher with an automatic
rifle according to claim 11, wherein said gun fore-end comprises a
wrapping portion embracing the barrel of the automatic rifle at the
lower side and sideways thereof, by overhanging the same barrel at
least in one front portion of said gun fore-end in which there are
provided inserting seats of a cross fastener being adapted to be
rested on the barrel of the automatic rifle in order to fasten said
front portion of said gun fore-end.
19. The device for coupling a grenade launcher with an automatic
rifle according to claim 2, wherein the track has a "T-shaped"
cross section.
20. The device for coupling a grenade launcher with an automatic
rifle according to claim 19, wherein said track comprises sloping
surfaces adapted to define a bilateral fastening which locks the
grenade launcher in a plane which is transversal to the barrel of
the automatic rifle.
21. The device for coupling a grenade launcher with an automatic
rifle according to claim 2, wherein said track has a plurality of
notches being located transversal to the barrel of the rifle at one
outer and lower surface of the track.
22. The device for coupling a grenade launcher with an automatic
rifle according to claim 1, wherein said second portion of the
mutual coupling means comprises an abutment surface adapted to abut
against a striking surface being associated to said gun fore-end
and located at a portion directly associated to a frame of the
automatic rifle.
23. The device for coupling a grenade launcher with an automatic
rifle according to claim 22, wherein said striking surface is
located, in an assembled position of the grenade launcher and
automatic rifle, at the front side of interference means being
adapted to provide a constraint for the relative sliding motion
between the automatic rifle and grenade launcher, parallel to the
barrel of the automatic rifle.
24. The device for coupling a grenade launcher with an automatic
rifle according to claim 1, comprising a rear and lower portion of
said gun fore-end being integral directly to a frame of the
automatic rifle.
25. The device for coupling a grenade launcher with an automatic
rifle according to claim 24, wherein said rear and lower portion of
said gun fore-end is adapted to be directly fastened onto a frame
of the automatic rifle.
26. The device for coupling a grenade launcher with an automatic
rifle according to claim 25, further comprising means for locking a
front portion of said gun fore-end on the barrel of the automatic
rifle, said barrel holding the front portion of said gun fore-end
at the lower side thereof by means of said locking means, thereby
said gun fore-end is fastened to the front and upper sides of the
barrel and directly to the rear and lower sides of the frame of the
automatic rifle.
27. The device for coupling a grenade launcher with an automatic
rifle according to claim 24, wherein said rear and lower portion of
gun fore-end directly integral to a frame of automatic rifle is
arranged as a rear and lower extension of the first portion of the
mutual shape-coupling means.
28. The device for coupling a grenade launcher with an automatic
rifle according to claim 27, wherein said rear and lower portion of
said gun fore-end comprises a tooth extending in the lower and rear
sides of gun fore-end in order to be inserted into a slot of a
frame of the automatic rifle located on the lower side of barrel of
the automatic rifle.
29. The device for coupling a grenade launcher with an automatic
rifle according to claim 28, wherein said tooth is arranged as a
rear and lower extension of said first portion of the mutual
shape-coupling means.
30. The device for coupling a grenade launcher with an automatic
rifle according to claim 29, wherein said tooth is directly
fastened onto the frame of the automatic rifle in order to define a
rear fastening point of said gun fore-end.
31. The device for coupling a grenade launcher with an automatic
rifle according to claim 30, wherein said rear fastening point of
said gun fore-end provided directly on frame of automatic rifle
allows the gun fore-end to be free to rotate around an axis
transversal to the barrel of the automatic rifle.
32. The device for coupling a grenade launcher with an automatic
rifle according to claim 31, wherein said rear fastening point
comprises a coupling pivot being transversally inserted between the
gun fore-end and the frame of the automatic rifle, at the tooth of
the gun fore-end.
33. The device for coupling a grenade launcher with an automatic
rifle according to claim 32, wherein said tooth has a cross hole in
order to accommodate the coupling pivot.
34. The device for coupling a grenade launcher with an automatic
rifle according to claim 33, wherein cross hole of said tooth is
located on the rear side of interference means adapted to provide a
constraint for the relative sliding motion between the automatic
rifle and the grenade launcher, parallel to the barrel of the
automatic rifle.
35. The device for coupling a grenade launcher with an automatic
rifle according to claim 34, wherein said interference means
comprise an interference pivot being transversally inserted between
the frame of the grenade launcher and said gun fore-end.
36. The device for coupling a grenade launcher with an automatic
rifle according to claim 35, wherein said interference means
comprise at least one elastic element adapted to transversally lock
said interference pivot between the frame of the grenade launcher
and said gun fore-end.
37. The device for coupling a grenade launcher with an automatic
rifle according claim 36, wherein said elastic element is housed
inside said interference pivot and comprises a coupling portion
adapted to pass through an aperture of said interference pivot.
38. The device for coupling a grenade launcher with an automatic
rifle according to claim 35, wherein said interference pivot is
located at the rear side of mutual abutment and striking surfaces
of said first and second portions of the mutual shape coupling
means.
39. The device for coupling a grenade launcher with an automatic
rifle according to claim 35, comprising at least one fastening wing
extending on the rear side from the frame of the grenade launcher
and comprising a housing for said interference pivot.
40. The device for coupling a grenade launcher with an automatic
rifle according to claim 39, comprising two fastening wings
extending from frame of the grenade launcher on the rear side and
opposite sides, and wherein said fastening wings comprise their
respective housings for said interference pivot and are adapted to
be arranged on their respective opposite sides of said tooth.
41. The device for coupling a grenade launcher with an automatic
rifle according to claim 24, wherein said gun fore-end comprises a
wrapping portion embracing the barrel of the automatic rifle at the
lower side and sideways thereof, by overhanging the barrel at least
at one front portion of said gun fore-end in which there are
provided inserting seats for a cross fastener adapted to be abutted
on the barrel of the automatic rifle in order to fasten said front
portion of said gun fore-end.
42. The device for coupling a grenade launcher with an automatic
rifle according to claim 24 or claim 2, wherein said rear end of
said sliding seat defines an abutment surface adapted to abut
against a striking surface being associated to said gun fore-end
and located at the rear and lower portion of said gun fore-end
directly integral with the frame of the automatic rifle.
43. The device for coupling a grenade launcher with an automatic
rifle according to claim 1, wherein said gun fore-end is made
integral and as one piece with a frame of automatic rifle.
44. The device for coupling a grenade launcher with an automatic
rifle according to claim 43 or claim 2, wherein the track has a
"T-shaped" cross section.
45. The device for coupling a grenade launcher with an automatic
rifle according to claim 44, wherein said track comprises sloping
surfaces adapted to define a bilateral fastening which
transversally locks the grenade launcher to the barrel of the rifle
in either directions.
46. The device for coupling a grenade launcher with an automatic
rifle according to claim 2, wherein said track has a plurality of
notches being located transversal to the barrel of the rifle at an
outer and lower surface of the track.
47. The device for coupling a grenade launcher with an automatic
rifle according to claim 24, wherein said rear and lower portion of
said gun fore-end is made integral and as one piece with the frame
of the automatic rifle.
48. The device for coupling a grenade launcher with an automatic
rifle according to claim 1, wherein said gun fore-end comprises at
least one sidetrack adapted to accommodate accessories.
49. The device for coupling a grenade launcher with an automatic
rifle according to claim 48, wherein the sidetrack is provided as
one piece in the gun fore-end.
50. The device for coupling a grenade launcher with an automatic
rifle according to claim 48, wherein the sidetrack has a "T-shaped"
cross section.
51. The device for coupling a grenade launcher with an automatic
rifle according to claim 50, wherein the sidetrack comprises
sloping surfaces adapted to define a bilateral fastening for an
accessory.
52. The device for coupling a grenade launcher with an automatic
rifle according to claim 48, wherein the sidetrack has a plurality
of notches (being located transversal to barrel of the rifle at an
outer surface of the sidetrack.
53. The device for coupling a grenade launcher with an automatic
rifle according to claim 48, wherein said gun fore-end comprises
two sidetracks either for the assembly of more accessories or in
order to allow front sights or other accessories to be right or
left mounted.
54. A kit comprising an automatic rifle being provided with a gun
fore-end integral to a barrel of the rifle and having a first
portion of mutual shape-coupling means externally between a frame
of a grenade launcher and said gun fore-end, the kit further
comprises either at least one covering element, or more covering
elements being different from one another in shape, size, material,
surface cover or other features, said covering element comprising a
further second portion of mutual shape coupling means being similar
to a second portion of mutual shape coupling means associated to a
frame of the grenade launcher in order to fasten the covering
element to the automatic rifle in a direction which is transversal
to the barrel of the automatic rifle when the grenade launcher is
not fastened to the automatic rifle.
55. A frame of an automatic rifle having integrally and as one
piece a gun fore-end having externally a first portion of mutual
shape coupling means adapted to be mutually coupled with a second
portion externally associated to an additional device, such as a
frame of a grenade launcher, an accessory or a covering element,
said first and second portions being adapted to mutually slide one
inside the other along a direction which is parallel to the barrel
of the automatic rifle in order to fasten the additional device to
the automatic rifle in a direction which is transversal to the
barrel of the automatic rifle.
56. A gun fore-end of an automatic rifle adapted to be fastened
directly onto a frame of the automatic rifle, said gun fore-end
having externally a first portion of mutual shape coupling means
adapted to be mutually coupled with a second portion externally
associated to an additional device, such as a frame of a grenade
launcher, an accessory or a covering element, said first and second
portions being adapted to mutually slide one inside the other along
a direction which is parallel to the barrel of the automatic rifle
in a direction which is transversal to the barrel of the automatic
rifle.
57. The gun fore-end according to claim 56, comprising a rear and
lower portion adapted to be made integral directly with a frame of
the automatic rifle such as to carry out a rear fastening point
adapted to allow the gun fore-end to be free to rotate around an
axis transversal to the barrel of the automatic rifle.
58. The gun fore-end according to claim 57, wherein the rear and
lower portion of the gun fore-end is provided in the shape of a
tooth being adapted to be inserted into a slot of the frame of the
automatic rifle.
59. The gun fore-end according to claim 56, further comprising
means for locking a front portion of the gun fore-end on a barrel
of the automatic rifle such that the barrel holds the front portion
of gun fore-end at the lower side thereof by means for locking,
thereby said fore-end is fastened to the front and upper sides of
the barrel and directly to the rear and lower sides of the frame of
the automatic rifle.
Description
FIELD OF THE INVENTION
[0001] According to a first aspect, the object of the present
invention is a device for coupling a grenade launcher with an
automatic rifle.
[0002] According to further aspects, the object of the present
invention is a kit for an automatic rifle, a frame for an automatic
rifle and a gun fore-end of an automatic rifle.
BACKGROUND OF THE INVENTION
[0003] A known example of a device for coupling a grenade launcher
with an automatic rifle is described in U.S. Pat. No. 4,733,489
comprising an additional element being inserted inside an outer
protective cover of the barrel of the automatic rifle. Therefore,
the coupling occurs between this additional element and the grenade
launcher. The additional element as well as the outer protective
cover are directly mounted on the barrel at front and rear portions
thereof.
[0004] The example stated above presented some drawbacks, requiring
a large number of components which complicate the structure thereof
and make it overloaded. Moreover said example seems to be somewhat
poor from the point of view of compactness and resistance,
especially to the impulses following the firing, given that the
additional element and thus the grenade launcher is directly
fastened only onto the barrel of the automatic rifle.
[0005] Furthermore it should be noted that the need for having a
versatile weapon, which is compact and strong and easy to be
adapted to different requirements is felt more and more in the
field.
[0006] The problem at the heart of the present invention is to
provide a device for coupling a grenade launcher with an automatic
rifle which has such structural and functional characteristics as
to meet said need and, while overcoming said drawbacks mentioned
with reference to the prior art.
SUMMARY OF THE INVENTION
[0007] This problem is solved by means of a device for coupling a
grenade launcher with an automatic rifle in accordance with claim
1. The dependent claims relate to further aspects or embodiments of
the coupling device according to the present invention.
[0008] Further aspects of the present invention are the object of
claims 54-56.
[0009] Particularly, the carrying out of a mutual shape coupling, a
first portion of which is directly associated to the gun fore-end
of the automatic rifle makes the weapon more compact, simpler and
stronger. Furthermore the weapon strength is incremented by
providing a rear and lower portion of the gun fore-end directly
associated to the frame of the automatic rifle. This characteristic
may be achieved either by a gun fore-end being integral and made as
one piece with the rifle frame, or by a gun fore-end comprising a
lower and rear portion adapted to define a rear and lower fastening
point directly on the frame of the automatic rifle.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Further characteristics and the advantages of the coupling
device according to the invention will be understood from the
description of a preferred embodiment example thereof as set forth
hereinbelow, which is given by way of indicative and non-limiting
example, with reference to the annexed figures, in which:
[0011] FIG. 1 shows a schematic side view of a first embodiment of
an automatic rifle and a coupling device in accordance with the
present invention;
[0012] FIG. 2 shows the automatic rifle from FIG. 1 associated to a
grenade launcher;
[0013] FIG. 3 shows the automatic rifle from FIG. 1 in a mounting
step;
[0014] FIG. 4 shows the automatic rifle from FIG. 1 in a different
operating condition;
[0015] FIG. 5 shows a perspective view of a detail of the automatic
rifle from FIG. 1;
[0016] FIG. 6 shows a cut-away perspective view of the automatic
rifle, grenade launcher and coupling device according to the
present invention;
[0017] FIG. 7 shows a longitudinal sectional view of a detail from
FIG. 2;
[0018] FIG. 8 shows a sectional view according to line VII-VII from
FIG. 7;
[0019] FIG. 9 shows a sectional view according to line IX-IX from
FIG. 7;
[0020] FIG. 10 shows a schematic side view of a further embodiment
of an automatic rifle, the grenade launcher and the coupling device
in accordance with the present invention;
[0021] FIG. 11 shows the automatic rifle from FIG. 10 in which the
grenade launcher has been omitted in order to highlight a part of
the coupling device according to the present invention.
DETAILED DESCRIPTION OF THE INVENTION
[0022] With reference to said figures, with 10 has been indicated
an automatic rifle as a whole. Furthermore with 12 has been
indicated a grenade launcher adapted to be coupled with the lower
side of automatic rifle 10 as a whole.
[0023] In the following of the present description, the terms
"lower", "upper", "front" and "rear" will be employed with
reference to the shouldered rifle.
[0024] With reference to the automatic rifle 10, with 14 has been
indicated a barrel and with 16 has been indicated a frame.
Particularly, FIG. 1 shows a schematic side view of a first
embodiment of an automatic rifle 10 in accordance with the present
invention. FIG. 2 shows automatic rifle 10 from FIG. 1 associated
to grenade launcher 12. FIG. 3 shows the automatic rifle 10 from
FIG. 1 in a mounting step, and finally FIG. 4 shows the automatic
rifle from FIG. 1 in a different operating condition.
[0025] A first aspect of the present invention relates to a device
for coupling the grenade launcher 12 with the automatic rifle 10.
Advantageously, this coupling device comprises a gun fore-end 18 of
the automatic rifle, which is integral to the barrel 14 of the
automatic rifle.
[0026] FIG. 1-9 show a first embodiment of the coupling device
according to the present invention in which the gun fore-end 18 is
provided by means of an element being detached from the frame of
the automatic rifle and adapted to be fastened to the frame and the
barrel of the automatic rifle.
[0027] In accordance with a possible embodiment, the gun fore-end
18 is adapted to embrace the barrel 14 of the automatic rifle at
the lower side and sideways thereof. Particularly FIG. 5 shows a
perspective view of an exemplary embodiment of the gun fore-end 18,
in which with 20 has been indicated a wrapping portion embracing
the barrel of the automatic rifle at the lower side and sideways
thereof. Advantageously the wrapping portion 20 overhangs the
barrel 14 of the automatic rifle on either side at least in one
front portion 22 of the gun fore-end. In accordance with the
preferred embodiment shown in the figures, such as in FIG. 5,
wrapping walls 23 of the gun fore-end 18 are adapted to wrap the
barrel 14 of the automatic rifle on either side.
[0028] In accordance with a possible embodiment, a rear and lower
portion of the gun fore-end 18 is adapted to be directly fastened
onto the frame 16 of the automatic rifle. Advantageously this rear
and lower portion of the gun fore-end comprises a tooth 24
extending on the lower and rear sides of the gun fore-end in order
to be inserted in a slot, not shown, of the automatic rifle frame
16. This slot is located at the lower side of the barrel 14 of the
automatic rifle.
[0029] In accordance with the preferred example shown in the
figures, such as in FIG. 5, the tooth 24 extends in the lower and
rear sides in a cantilever manner relative to the wrapping walls 23
of barrel 14.
[0030] Advantageously, the tooth 24 is directly fastened onto the
frame 16 of the automatic rifle in order to define a rear fastening
point on the gun fore-end. Preferably this rear fastening point
allows the gun fore-end to be free to rotate around an axis 26
transversal to the barrel of the automatic rifle (FIG. 3).
[0031] In accordance with a possible embodiment, such as
illustrated in the figures, the rear fastening point comprises a
coupling pivot 28 being transversally inserted between the gun
fore-end 18 and the frame 16 of the automatic rifle, at tooth 24.
To this purpose, the tooth 24 has a cross hole 30 in order to
accommodate the coupling pivot 28 and the rifle frame comprises its
respective side holes 31. The coupling between the coupling pivot
28 and the tooth 24 allows the gun fore-end to be free only to
rotate around axis 26 between an inserting position of the tooth
into the slot (FIG. 3) and a mounting position of the gun fore-end
18 on the barrel 14 of the automatic rifle (FIG. 1).
[0032] In accordance with a possible embodiment, there are further
provided means for locking the front portion 22 of the gun fore-end
18 on the barrel 14 of the automatic rifle, such that the barrel
holds the front portion of the gun fore-end at the lower side
thereof by means of said means for locking. Preferably, the front
portion 22 of the gun fore-end 18 has inserting seats 32 for a
cross fastener 34 adapted to rest on the upper side of the barrel
of the automatic rifle in order to fasten the front portion 22 of
the gun fore-end. In FIG. 6 an example of cross fastener 34 is
shown in which there is provided a portion 34a having a section
conjugate to the shape of the inserting seat 32, for example
"T-shaped". The portion 34a defines for example a striking element
against the rifle barrel.
[0033] In the preferred embodiment as shown for example in FIG. 5
and 6, the cross fastener 34 extends from one side to another of
the front portion 22 of the gun fore-end 18, thus being firmly hung
on the rifle barrel.
[0034] According to the embodiment such as shown in the figures,
the gun fore-end 18 is advantageously fastened to the front and
upper sides of the barrel and directly to the rear and lower sides
of the frame of the automatic rifle, at a lower area than the same
barrel.
[0035] In accordance with a possible embodiment, the gun fore-end
18 comprises at least one sidetrack 35 adapted to accommodate some
accessories such as front sights or other equipment. In accordance
with a preferred embodiment, the sidetrack 35 is provided in the
gun fore-end 18 as one piece. Furthermore, the sidetrack 35 has a
"T-shaped" cross section preferably comprising sloping surfaces 35a
adapted to define a bilateral fastening for the accessory.
[0036] In accordance with a possible embodiment, the sidetrack 35
has a plurality of notches 35b being located transversal to the
rifle barrel at an outer surface of the track. The shape, size and
arrangement of these notches are adapted to allow the accessories
to be locked in certain positions along the length of the same
track.
[0037] Preferably, the gun fore-end 18 comprises two sidetracks 35
either for mounting more accessories or in order to allow front
sights or other accessories to be right or left mounted.
[0038] In the coupling device according to the present invention,
the gun fore-end 18 has a first portion of mutual shape-coupling
means externally between the frame of the grenade launcher and the
gun fore-end. Preferably, the gun fore-end is manufactured as one
piece in polymeric material.
[0039] A second portion of the mutual shape-coupling means, and
accordingly the coupling device according to the present invention,
is externally associated to a frame 36 of grenade launcher 12.
Preferably the second portion of the mutual shape coupling means is
provided in the frame 36 of the grenade launcher as one piece, for
example manufactured in polymeric material. Advantageously, the
first and second portions mutually slide one inside the other along
a direction which is parallel to the barrel 14 of the automatic
rifle in order to fasten the grenade launcher to the automatic
rifle in a direction which is transversal to the barrel of the
automatic rifle. The preferred example shown in the figures
provides that the first portion comprises a track 38 being directly
associated to the gun fore-end 18 and extending in the lower side
of and parallel to barrel 14 of the automatic rifle between a front
end 38a and a rear end 38b. Preferably, the track 38 is provided as
one piece with the gun fore-end 18. Moreover the second portion
comprises a sliding seat 40 being defined in the frame 36 of the
grenade launcher and extending in the upper side of the grenade
launcher and parallel to the barrel 14 of the automatic rifle
between a front end 40a and a rear end 40b. Preferably, the sliding
seat 40 is provided as one piece with the frame 36 of the grenade
launcher.
[0040] The sliding seat 40 is capable of being slidingly engaged on
the track 38 from the front end 38a to the rear end 38b of the same
track in order to fasten the grenade launcher to the automatic
rifle in a direction which is transversal to the barrel of the
automatic rifle. More precisely, the coupling between track 38 and
sliding seat 40 causes the grenade launcher to be fastened onto the
automatic rifle in a plane that is perpendicular to the barrel of
the automatic rifle.
[0041] In accordance with a preferred embodiment, the track 38 has
a "T-shaped" cross section preferably comprising sloping surfaces
42 adapted to define a bilateral fastening which transversally
locks the grenade launcher to the rifle barrel.
[0042] In accordance with a possible embodiment, the track 38 has a
plurality of notches 44 being located transversal to the rifle
barrel at an outer and lower surface of the track. The shape, sizes
and arrangement of these notches are adapted to allow, in certain
positions along the same track, accessories (not shown) to be
locked, when the grenade launcher is not mounted on the automatic
rifle.
[0043] In accordance with an embodiment in which the gun fore-end
comprises tooth 24, this tooth is preferably arranged as a rear and
lower extension of track 38. In general terms, the tooth 24 is
arranged as a rear and lower extension of the first portion of the
mutual shape-coupling means. In other words the rear and lower
portion of the gun fore-end 18 adapted to be fastened directly onto
the frame 16 of the automatic rifle is arranged as a rear and lower
extension of track 38, or more generally the first portion of the
mutual shape-coupling means.
[0044] With reference to the preferred embodiment as shown in the
figures, the track 38 extends in the lower side along the length of
the wrapping walls 23 and the tooth 24 projects from the rear end
of the track in a cantilever manner.
[0045] According to a possible embodiment, the rear end of the
sliding seat 40 defines an abutment surface 46 adapted to abut
against a striking surface 48 associated to the gun fore-end.
Advantageously, the striking surface 48 is located at a portion of
the gun fore-end directly associated to frame 16 of the automatic
rifle. In the example such as shown in FIG. 1-9, in which the gun
fore-end is mounted on the frame 16 of the rifle, the striking
surface 48 is provided at the rear and lower portion of the gun
fore-end adapted to be fastened directly onto the frame 16 of the
automatic rifle. By providing the tooth 24, the striking surface 48
is defined by the same tooth extending in the lower side of track
38.
[0046] In accordance with a possible embodiment, the coupling
device according to the present invention comprises interference
means adapted to act as a constraint for the relative sliding
motion between the automatic rifle and the grenade launcher,
parallel to the barrel of the automatic rifle. Preferably, the
striking surface 48 is located, in an assembled position of the
grenade launcher and the automatic rifle, at the front side of the
interference means.
[0047] According to a possible embodiment the interference means
comprise an interference pivot 50 being transversally inserted
between frame 36 of the grenade launcher and gun fore-end 18.
Advantageously, the interference pivot 50 is located at the rear
side of the mutual abutment 46 and striking 48 surfaces of sliding
seat 40 and track 38.
[0048] In the case where tooth 24 is provided, the interference
means transversally pass through said tooth. Particularly, the
tooth 24 comprises a housing slot 51 in order to accommodate the
interference pivot 50. Preferably, the cross hole 30 of tooth 24
adapted to accommodate the coupling pivot 28 is located at the rear
side of the housing slot 51 of the interference pivot 50 of the
interference means.
[0049] According to a possible embodiment the interference means
comprise at least one elastic element 52 adapted to transversally
lock the interference pivot 50 between the frame of the grenade
launcher and the gun fore-end. Preferably, the interference pivot
50 is hollow inside and the elastic element 52 is housed therein. A
coupling portion 54 of the elastic element 52 is adapted to pass
through an aperture 56 of the interference pivot 50 and be inserted
into a recess 58, for example of the housing slot 51 of gun
fore-end 18.
[0050] In accordance with a possible embodiment, the coupling
device according to the present invention comprises at least one
fastening wing 60 extending from the frame of the grenade launcher
on the rear side of its respective sliding seat 40. The fastening
wing comprises a housing 62 for the interference pivot 50.
Advantageously, the frame 36 of the grenade launcher comprises two
fastening wings 62 extending from the frame of the grenade launcher
on the rear side and the opposite sides of their respective sliding
seat 40. Each fastening wing 62 comprises a respective housing 62
for the interference pivot 50. The two fastening wings 62 are
further adapted to be arranged externally on the opposite sides of
the gun fore-end, for example at tooth 24, if provided.
[0051] The mode of use of the coupling device according to the
present invention will be described hereinbelow.
[0052] FIG. 3 shows a mounting step of the gun fore-end 18 on the
automatic rifle. The tooth 24 has been inserted into its respective
slot of the rifle frame and the coupling pivot 28 has been inserted
into the side holes 31 of the frame and the cross hole 30 of tooth
24. Thereby, a rear fastening point of the gun fore-end that allows
the latter to be free to rotate around axis 26 in order to embrace
the rifle barrel has been defined directly on the rifle frame.
[0053] In fact, FIG. 1 shows the subsequent mounting step in which
the gun fore-end is caused to rotate until it embraces the rifle
barrel and is fastened onto the front and upper side of the latter.
The cross fastener 34 is set into inserting seats 32 such that the
gun fore-end 18 is hung on the front side of the rifle barrel.
[0054] The thus arranged automatic rifle may be employed both with
the grenade launcher 12 (FIG. 2) and individually (FIG. 1 or 4). A
possible embodiment, such as shown for example in FIG. 4, provides
a covering element 64 associated to the first portion of the mutual
shape-coupling means. Particularly, the covering element expands so
as to cover at least one portion of track 38 and comprises a
sliding seat, not shown, similar to the one provided in the frame
36 of grenade launcher 12. In accordance with a possible
embodiment, the covering element 64 is locked on the gun fore-end
18 by means of the interference pivot 50.
[0055] A further aspect of the present invention relates to a kit
comprising a gun fore-end 18 adapted to be mounted on an automatic
rifle by a lower and rear fastening directly onto the rifle frame
and a front and upper fastening being provided such that a front
portion of the gun fore-end is hung on the front side of the rifle
barrel. The kit further comprises either at least one covering
element 64, or more covering elements being different from one
another in shape, size, material, surface cover or other features.
The kit further comprises at least one grenade launcher, the frame
of which comprises a second portion of mutual shape-coupling means
adapted to be coupled with a first portion of mutual shape-coupling
means being associated to the gun fore-end, such as described
above.
[0056] A further aspect of the present invention relates to a kit
comprising an automatic rifle, the frame of which comprises a gun
fore-end, integrally and as one piece. The kit further either
comprises at least one covering element 64, or more covering
elements being different from one another in shape, size, material,
surface cover or other features. The kit further comprises at least
one grenade launcher, the frame of which comprises a second portion
of mutual shape-coupling means adapted to be coupled with a first
portion of mutual shape-coupling means associated to the gun
fore-end, such as described above.
[0057] From what has been stated above, it should be appreciated
that the fact of providing a coupling portion according to the
present invention enables to meet the need for a compact and
versatile weapon, which can be easily and quickly adapted to
different conditions and requirements.
[0058] Furthermore, the coupling portion according to the present
invention enables to achieve an optimum compromise between
lightness and resistance.
[0059] Since the first portion of shape coupling means is directly
associated to the gun fore-end, the coupling device is made simpler
and further adapted to be provided with a gun fore-end being
manufactured as one piece.
[0060] The use of a track/sliding seat coupling facilitates and
stabilizes the assembling, also due to the configuration of the
cross section in which there are provided sloping surfaces adapted
to provide a bilateral fastening between the rifle and the grenade
launcher. Moreover both the track shape and the presence of the
notches make the same track very versatile and adapted for the
standardized use as a coupling element for accessories.
[0061] The advantageous configuration of the interference means and
particularly the arrangement thereof in a rear position relative to
their respective abutment and striking surfaces facilitates the
manufacture and the assembly, besides making the step of
discharging the impulse due to the firing on the rifle frame more
effective. To this purpose, it is particularly original that a
tooth 24 extending the track 38 and being inserted into and
associated directly to the rifle frame on the lower side of the
barrel is provided, thus making the mutual interaction between the
abutment and striking surfaces even more effective and more
resistant following the firing.
[0062] Advantageously, the gun fore-end is mounted on the rifle
frame by means of a rear and lower fastening point which allows the
latter to rotate only around a cross axis, thereby making the gun
fore-end positioning on the rifle barrel immediate and firm.
Furthermore the gun fore-end is mounted onto the front and upper
sides of the rifle barrel, thus making the fastening particularly
firm due to the provision of two opposite points relative to the
barrel.
[0063] A further advantage of the coupling device according to the
invention is the unusual structural simplicity of the latter, which
allows the latter to be manufactured with a very low cost.
[0064] It is understood that variants and/or additions to what has
been described and shown above may be provided.
[0065] FIG. 10 and FIG. 11 illustrate a different embodiment of the
coupling device according to the present invention corresponding to
what has been described above, except that the gun fore-end is made
integral and as one piece with the frame 16 of the automatic rifle
10. With reference to this embodiment, the term "gun fore-end" will
be employed in order to show the portion of frame 16 of automatic
rifle 10 which corresponds to the gun fore-end 18 being described
above, i.e. the portion embracing the barrel of the automatic
rifle.
[0066] By proceeding with the description, the elements in common
with the previous embodiment have been indicated with the same
reference numbers.
[0067] In the embodiment shown in FIG. 10 and 11, the gun fore-end
18 also has a first portion of mutual shape coupling means on the
outside thereof, between the frame 36 of the grenade launcher and
the gun fore-end. Moreover the coupling device comprises a second
portion of the mutual coupling means being externally associated to
the frame 36 of the grenade launcher. The first and second portions
are mutually sliding one inside the other along a direction which
is parallel to the barrel of the automatic rifle in order to fasten
the grenade launcher to the automatic rifle in a direction which is
transversal to the barrel of the automatic rifle.
[0068] The description of the mutual shape coupling means
corresponds to the one of the exemplary embodiment previously
described. Particularly, the rear end 40b of sliding seat 40
defines the abutment surface 46 adapted to abut against the
striking surface 48 located at a portion directly associated to a
frame of the automatic rifle. In fact, in this embodiment, the
striking surface 48 is located at a portion made as one piece with
the frame of the automatic rifle.
[0069] Even in the embodiment shown in FIG. 10 and 11, the striking
surface 48 is located, in an assembled position of the grenade
launcher and the automatic rifle, at the front side of the
interference means being adapted to provide a constraint for the
relative sliding motion between the automatic rifle and the grenade
launcher, parallel to the barrel of the automatic rifle. These
interference means may comprise, for example, the interference
pivot 50 such as described above. In other words, the interference
pivot 50 is located on the rear side of the abutment and striking
surfaces of the sliding seat and the track, respectively.
[0070] The shape of the frame 36 of the grenade launcher may be
similar to the one previously described. For example, there can be
provided at least one fastening wing 60 extending from the frame of
the grenade launcher on the rear side of its respective sliding
seat and comprising a housing for the interference pivot. Also in
this case, there are preferably provided two fastening wings 60
extending from the frame of the grenade launcher on the rear side
and the opposite sides of their respective sliding seat such as
described above.
[0071] In accordance with a further aspect, the present invention
relates to a gun fore-end 18 adapted to be fastened directly onto a
frame of the automatic rifle. The gun fore-end has externally a
first portion of mutual shape-coupling means with a second portion
externally associated to an additional device, such as a frame of a
grenade launcher, an accessory or a covering element 64. The first
and second portions are adapted to mutually slide one inside the
other along a direction which is parallel to the barrel of the
automatic rifle in order to fasten the additional device to the
automatic rifle in a direction which is transversal to the barrel
of the automatic rifle.
[0072] Advantageously, the gun fore-end has a rear and lower
portion adapted to be made integral directly to a frame of the
automatic rifle such as to provide a lower fastening point as
previously described. Preferably, the rear and lower portion of the
gun fore-end is provided in the shape of a tooth 24 such as
described above.
[0073] Furthermore, there are advantageously provided means for
locking a front portion of the gun fore-end onto the barrel of the
automatic rifle such that the barrel holds the front portion of the
gun fore-end by means of locking means at the lower side thereof,
thereby said gun fore-end is fastened to the front and upper sides
of the barrel and directly to the rear and lower sides of the
frame.
[0074] Further features relative to said gun fore-end have been
described above with reference to the preferred embodiment of the
invention.
[0075] In accordance with a further aspect, the present invention
relates to a frame of an automatic rifle having a gun fore-end
integrally and as one piece as described above. Particularly, the
portion defining the gun fore-end has externally a first portion of
mutual shape-coupling means with a second portion externally
associated to an additional device, such as a frame of a grenade
launcher, an accessory or a covering element 64. The first and
second portions are adapted to mutually slide one inside the other
along a direction which is parallel to the barrel of the automatic
rifle in order to fasten the additional device to the automatic
rifle in a direction which is transversal to the barrel of the
automatic rifle.
[0076] To the preferred solution embodiment of the described
coupling device, those skilled in the art, aiming at satisfying
contingent and specific needs, will be able to carry out several
modifications, adjustments and replacements of elements with other
elements being functionally equivalent thereto, without thereby
departing from the scope of the following claims.
* * * * *