Patent Application
20230251049
The invention is related to the removable connection of the carrier tube and the components on it to the plastic receiver by means of the fixing nut in a combination of a carrier tube and plastic receiver. It is related to positioning of recoil spring inside the carrier tube and the plastic receiver made of plastic material in which more than one stock with different types and features can be located on the same carrier tube.
In the state of the art, there are more than one method in which the carrier tube is connected to the rifle receiver.
In the first of these, in a metal or metal alloy receiver, the carrier tube is connected to the receiver by directly threading on and passing the receiver.
Again, in the state of the art, there are also receivers made of non-metal (plastic etc.) materials. Screw bushes are placed into these receivers in an unremovable manner. This way the receiver and carrier tube are passed on this bush.
Problems occur in both of the aforementioned present techniques. As a result of the prolonged use of the rifle, problems such as the deterioration of the connection threads and the self-dislocation of the carrier tube are experienced. In this case, the entire receiver is subject to renewal. This, in return, creates extra costs.
In the present technique, rifles with a fixed structure and carrier tube do not allow the extension or shortening of the stock according to the physical characteristics of the user.
The main purpose of the invention is to have a structure in which the plastic receiver and carrier tube can be disassembled and assembled when necessary, which is developed to eliminate all the problems in the state of the art. In the plastic receiver structure subject to the present invention, the fixing nut to which the carrier tube is fixed, is placed on the receiver later and in a removable manner. In order to solve the problem of self-dislocation of the carrier tube as a result of prolonged use of the rifle, it is sufficient to change the fixing nut only. This method eliminates the burden and extra cost of the complete renewal of the rifle receiver and this is the solution in the present technique. In addition to the cost advantage, with the use of the plastic receiver and carrier tube in firearms, which are passed with the fixing nut, it provides many advantages over its counterparts.
In addition, a resistance bush is used in order to prevent the deformation of the plastic receiver as a result of the impacts. The plastic receiver is manufactured by pressing plastic into it with injection or casting method together with the resistance bush placed in the mold. Thus, the plastic receiver also has a stronger structure.
The recoil spring and other auxiliary components are also placed in the carrier tube, which is passed into the plastic receiver with a fixing bush. The carrier tube is designed in such a way that it accommodates the recoil spring in it, as well as allowing the long stocks to be mounted on it. In this way, the recoil spring is positioned inside the long stock. Depending on the user’s request, either a telescopic or a fixed stock can be easily mounted on the carrier tube. This feature provides superiority to the plastic receiver.
The plastic receiver that is passed by means of the fixing nut of the carrier tube made in order to achieve the purpose of this invention is shown in the attached figures.
These figures are;
Numbers are placed on the pictures in order to better understand the combination of plastic receiver and carrier tube fixed by means of the fixing nut subject to the invention. Accordingly;
As shown in
During the production, firstly the sling holder fixing nut (5) is fully tightened to the threads (7) that are at one end of the carrier tube (1). Then the sling holder (4) is mounted. The sling holder (4) is tightened until it rests on the sling holder fixing nut (5). Then, the resistance bush (3) is passed through the carrier tube (1). However, the inner surface of the resistance bush (3) is smooth; that is, it cannot be fixed on the threads (7) since it is not grooved. The resistance bush (3) is produced from a metal and/or metal-derived material.
The plastic receiver (7) shown in
In order to fix the carrier tube (1) to the plastic receiver (7), it is tightened by turning the fixing nut (2) on the carrier tube (1) and from the part of the carrier tube (1) which is inside the plastic receiver (7). The fixing nut (2) is positioned in the nut groove (9) that is inside the mounting channel (8). It is possible to form the nut groove (9) during the production of the plastic receiver (7). The nut groove (9) can optionally be formed after the plastic receiver (7) is produced.
The fixing nut (2) shown in
After fixing the carrier tube (1) and the plastic receiver (7), at least two threads (6) remain free between the plastic receiver (7) and the sling holder (4). Then the sling holder fixing nut (5) is turned towards the plastic receiver (7). Thus, the sling holder (4) moves towards the plastic receiver (7). This motion continues until the sling holder (4) rests to the plastic receiver (7). There are no free threads (6) left between the plastic receiver (7) and the sling holder (4) which abut each other by means of the sling holder fixing nut (5).
The recoil spring is positioned on the inner surface of the carrier tube (1). This way, it becomes possible to attach different types of stocks on the same carrier tube (1).
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/TR2020/051428 | 4/29/2020 | WO |
