EXTERNAL CHASSIS DEVICE WITH INTERNAL MOBILE ANCHORAGE SYSTEMS, POSITIONING AND AUTOMATIC PRE-FIRE RETENTION SYSTEM FOR LONG ARMS

Abstract

External chassis device with internal mobile anchorage systems, positioning and automatic pre-fire retention system for tong arms comprised of external chassis, mobile anchorage by means of internal sliding rings, automatic positioning system by means of a pin and an arm retention system by means of a set of guides and elastic rings integrated in the sliding rings (B) which attach to the body of an arm (D), leaving the barrel free, with free telescopic movement inside an external chassis (A). It also has a positioning pin (G) to block the movement of the arm load and some guide slots (F) for retaining the arm in a fixed position before firing. Elastic rings (H) and screws (I) prevent the rotation of the sliding rings (B) and therefore of the arm (D) inside the chassis (A).

Claims

1. External chassis device with internal mobile anchorage systems, positioning and automatic pre-fire retention system for long arms comprised of external chassis, mobile anchorage by means of internal sliding rings, automatic positioning system by means of a pin and an arm retention system by means of a set of guides and elastic rings integrated in the sliding rings, characterised by the existence of one or more sliding rings (B) which attach to the body of an existing arm (D) without modifying it, leaving the barrel free, with free telescopic movement inside an external chassis (A).

2. External chassis device with internal mobile anchorage systems, positioning and automatic pre-fire retention system for long arms, according to claim 1, characterised in that the chassis (A) has a positioning pin (G) located in the chassis (A) which blocks the movement of the arm load, changing its direction of movement and positioning the arm (D) in front of the retention system (H and I), which prevents the movement of the arm (D) before firing.

3. External chassis device with internal mobile anchorage systems, positioning and automatic pre-fire retention system for long arms, according to claim 1, characterised in that it has guide slots (F) integrated in the sliding rings (B), with a special profile with throttle, which allows, in conjunction with the elastic rings (H) and screws (I), the retention of the arm in a fixed position before firing.

4. External chassis device with internal mobile anchorage systems, positioning and automatic retention prior to firing for long arms, according to claim 1, characterised in that the existence of the set of guides (F) integrated in the sliding rings (B), elastic rings (H) and screws (I) that prevent the rotation movement of the sliding rings (B) and therefore of the arm (D) inside the chassis (A).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0050] FIG. 1 shows a vertical view of the complete set of external chassis with internal mobile anchorage systems, positioning and automatic pre-fire retention system for long arms which includes all the elements mentioned, although only the elements A, chassis, D, arm, G, pin and I, fixing screw are visible. The rest of the elements are internal and not visible from the outside.

[0051] FIG. 2 shows a vertical view of the arm element D, showing the interior of the system by removing the chassis element A. It shows the assembly of the sliding rings, elements B, the guidance and retention system, elements F, H and I, the automatic positioning pin, element G and the optional elements: the recovery spring, element C and plug E.

[0052] FIG. 3 shows a bottom view of the element D arm, the arrangement of the elements B, the elements I fixing screws, and the automatic positioning pin, element G.

[0053] FIG. 4 shows element A in lower view showing elements G and I, the latter fixed to the chassis by means of a thread. The holes presented by this element A only have a merely aesthetic purpose.

[0054] FIG. 5 presents four detailed views (a, b, c and d) of the guidance and retention system: view (a) shows the profile of the guidance slot element F, machined in element B and with its throttling. In view (b) the elastic ring element H is added, in resting position when the arm is anchored and ready to fire. In view (c) we add the fixing screw, element I that, threaded in the chassis, element A, fixes the elastic ring in a toroidal shape, element H, when crossing it through the internal hole. In view (d) there is a lower view of the sliding ring, element B, in which the fixing screws I and their arrangement are observed, holding the elastic rings, elements H that are not visible.

[0055] FIG. 6 shows two isometric views (a and b). View (a) shows all parts except the chassis, element A and optional elements C and E, which make up the external chassis device with internal mobile anchorage systems, positioning and automatic pre-fire retention system for long arms. View (b) includes the cylinder and all systems, although they are not visible for the most part.

[0056] The references of the figures correspond to: [0057] A. Chassis. [0058] B. Slip rings. [0059] C. Kinetic energy absorption element, in this case a metallic conical spring. [0060] D. Conventional arm, in this case a piston compressed air carbine. [0061] E, Plug [0062] F. Guide slot. [0063] G. Arm positioning pin [0064] H. Elastic ring. [0065] I. Fixing screw.

PREFERRED EMBODIMENT OF THE INVENTION

[0066] This preferred form of embodiment, described below, is illustrated in the figures described, in which it can be seen as the external chassis device with internal mobile anchorage systems, positioning and automatic pre-fire retention system for long arms consists of the following essential parts:

A. External chassis that houses all the elements inside. It provides linear motion with minimal friction to elements B. It can also provide support for the installation of gripping elements: cylinder head, handguard, pistol grip.
B. Minimum friction sliding rings concentric to the chassis, in this case two, that only provide freedom of movement in the same coaxial axis of the chassis.
F—Guide slots present in the sliding rings, element B, which by their shape and with elements H and I, provide retention and guidance of the arm through the rings, elements B.
G—Arm positioning pin, which locks the movement of the load and reverses it, placed either on the same external chassis A, or on the handguard of the cylinder head anchored to the external chassis A, This element is necessary in cases of compressed air carbines with lever charge, while in other arms, such as a bolt rifle, it will be unnecessary.
H—Elastic rings: Elastomers in the shape of a toroidal washer of a certain thickness which are housed in the guide slots element F, carved in one or all of the rings, elements B. Each of these elements H are fixed in their position together with the chassis element A, by a simple screw, element I bolted to the chassis, element A. Their number can vary from only one to several.
I—Fastening screws of the elastic rings, element H. They block the relative position of the rings with respect to the chassis, element A. They are screwed to element A. There will be one for each elastic ring.
The following elements also appear in the invention:
C. Conical metal spring, which is installed between the arm, element D, and the plug, element E. Absorbs the movement of the arm, element D.

D—Conventional arm.

[0067] E—Plug whose mission is to contain the element C and which can be used as a fastening element for the gripping systems: cylinder head and/or pistol grip.

[0068] The invention has been described above according to a preferential embodiment thereof, but admits multiple variations without exceeding the object of the claimed invention. These variations can be:

1. Replacement of element C with a cylindrical elastomer.
2. Existence of a single sliding ring of greater length and located at the centre of gravity of the arm
3. Replacement of element I with another type of fixing, such as metal or polymeric pins.