CH714270A2 - Carriage with an auxiliary ejector for a weapon conversion kit, a firearm, and a refitting kit for firearms. - Google Patents

Abstract

A carriage (100) for a kit for retooling weapons of the type used in connection with firearms having a factory provided ejector is presented. The carriage (100) includes a carriage housing and an auxiliary ejector portion (110) rotatably connected to the carriage housing. The auxiliary ejector part (110) has a first part (111) and a second part (112), the second part (112) comprising a contact surface. The auxiliary ejector portion (110) is configured to contact the factory provided ejector when the carriage housing slides backward in response to a firing of the firearm causing the contact surface of the second portion (112) of the auxiliary ejector portion (110) to become a cartridge case Ammunition ejects.

Description

description

REFERENCES TO RELATED APPLICATIONS

[0001] This application claims the benefit of US patent application Ser. No. 62 / 415,366 filed Oct. 31, 2016, the contents of which are hereby incorporated by reference.

TECHNICAL AREA

The technical field generally relates to firearms. In particular, the technical field relates to systems and methods for retooling firearms for training purposes.

BACKGROUND

Military law enforcement organizations and organizations often seek to use low-energy training ammunition that has a shorter range and lower impact than standard mission ammunition. To facilitate such training, it is advantageous to modify the standard or inventory shotgun to enable reliable firing of the low energy training ammunition. Many thousands of arms conversion kits have been produced and sold in recent years, and with the increasing use of metal injection technology (MIM) and low-weight polymeric materials for weapon mount and frame parts, weapons are now becoming geometrically more complex designs possible. This has led to more complex designs for kits, which now require more frequent exchange of the weapon sled against the service weapon sled or the weapon sled of the manufacturer, as well as the exchange of the original barrel for a training run.

Currently known kits for retrofitting often have problems in reliability due to improper ejection of the fired cartridge case. Since the low-energy cartridge cases are ejected from the retrofitted weapon, the energy needed to perform a power stroke of the weapon is generated only by the rearward movement of the bolt from the low-energy cartridge case against the surface of the weapon's closure (see, eg Patent US 5,359,937).

Since the converted weapon includes a converted barrel that does not block the carriage of the service gun frame, the training barrel moves differently than a service gun barrel, causing a deviation between the firing pin and the center firefighting charge of the training cartridge.

In normal operation, the firing of a standardized non-retrofitted weapon will cause the tail of the barrel of the service weapon to tilt upward after the standard munition has been deployed, with the non-blocking or unconnected training barrel not tilting upward , which makes the insertion of the training ammunition in the chamber of the conversion kit more demanding.

When ordinary ammunition is fired from a standard-run and standard-slide weapon, the ammunition-leaning chamber tilts downward, accordingly the chamber is brought into an optimal position against the magazine of the weapon to insert the cartridge case or to charge the chamber, then it tilts back up to allow the firing pin or firing pin a clean impact on the centrally located driving charge of a cartridge in the chamber. After firing, the barrel slides backwards with the carriage, unlocks and the end of the barrel of the barrel then tilts down again so that the fired cartridge case can be ejected cleanly, hit the ejector and ultimately be ejected from the weapon ( when the slide is pushed backwards). This usually occurs with conventional ammunition with the aid of an ejector which is part of the device of the frame of the weapon. The position of the ejector ensures that it is capable of pressing a sufficient area of a surface of the frame of the fired conventional cartridge case so that it is reliably ejected from the ejection opening of the weapon.

To ensure a reliable functioning of a converted weapon for training, this must be suitable to supply the training ammunition of the magazine clean the feed ramp. In this regard, some retrofit kits require an additional detachable feed ramp (see, for example, US Pat. No. 6,276,252) to properly position the ammunition and allow the firing pin for a reliable firing function to compress the centerfire propellant and then the factory ejector ultimately to allow the cartridge case edge of the fired cartridge case to be neatly tipped for clean ejection. All remaining alignment details are more complex with a non-reclining conversion run resulting in a variety of design trade-offs.

First, the striker in such a retrofit kit sometimes needs to be adjusted (with respect to the factory striker) to ensure a sufficient effect on the ignition charge of the training ammunition. This often requires unusual designs and / or positions for firing pins to mitigate the lack of tipping of the barrel, but this leads to an increase in production costs while simultaneously creating a potential vulnerability. Second, the non-tilting barrel provides less surface area for the ejector to squeeze the cartridge case fired in the practice lap.

In order to eject the fired cartridge case clean sufficient material overhang between the edge of the cartridge case and the ejector must exist. This is not always the case with retrofitted weapons as the position of the fired cartridge case is no longer in the same plane as the ejector and therefore there is an increased potential for increased hangers and reduced reliability of the weapon.

There is felt for a long time a need for kits for retrofitting, which provide a clean ejection, but also allow a clean impact of the firing pin or firing pin on the detonator of the training ammunition. Impacts outside the center are often the cause of misfires that cause dropouts of the weapon. The majority of pistols have a fixed ejector on the frame of the weapon, a part that is not normally modified for training purposes. Since it is normally fixed, the position of the ejector is a requirement and, accordingly, the firing pin (or firing pin) will be the component of the conversion kit that is moved to compensate for the deviation (as physically possible) for a more reliable one Function is required. However, due to geometric limitations, the maximum possible distance of the firing pin deviation in the training slide or slide used for training is limited by the amount of material in the weapon.

Accordingly, there is a tradeoff between a good, solid or strong impact of a firing pin on the fuze of the central drive means and the ability to eject the cartridge case reliably, due to limitations by the weapon geometry.

The firing pin of an unmodified weapon is aimed at the central axis of the service ammunition when the ammunition is in the chamber of the inclined barrel, and is therefore in direct plane with its detonator for the central propellant. This is not the case with a weapon with a non-tending retrofit kit, so even deviant or deviated firing bolts still produce insufficient firing and misfire accordingly.

Even if initiating the igniter and ejecting the cartridge case are successful, the ejection energy may vary due to design constraints caused by the geometry of the retrofitted weapon. Marginal contacts between the ejector and the cartridge case may result in poor ejection from the training weapon. Weak ejection of pods is a symptom of borderline design and eventual dropout, and this affects the exerciser's perception of the weapon's performance and reliability and, accordingly, the realism of the training.

Because of geometrical limitations of some retrofitted weapons, it has heretofore been necessary to provide modified firing pins to try to overcome the deviation caused by the fact that the barrel does not incline and to hit the detonator cleanly. These unique retool firing pins are sometimes angled (against the longitudinal axis of the retransfer carriage) to assist the firing pin as it strikes the igniter. Sometimes, the tips of a retrofit firing pin require modified tip geometry to compensate for the deviation, sometimes resulting in an asymmetrical shape corresponding to a "shark fin design" or to the tip of the firing pin in a straight line or plane but runs parallel to a central longitudinal axis below the firing pin. The design with a shark-shaped firing point has the disadvantage that it provides a sharp point (as opposed to the standard design with a round head as a tip), which, as has been shown, occasionally leads to pierced detonators, which is unsatisfactory. The other or different designs for tips of firing pin also have the disadvantage that they generate a bending moment on the staggered arm of the firing pin, which can lead to fractures of the firing pin.

Another method to improve ejection of a sleeve that has been presented is to place a new, complementary ejector directly on the conversion run of the kit for retooling at a lower end (by welding or stapling). This method helps to ensure clean contact with the edge of a sleeve, but has the disadvantage of being more costly to manufacture and provide a long, thin element to be used by a trainee during the process of attaching the weapon Training purposes is converted or when it is returned to the state to operational operation, can be easily bent or broken. Furthermore, such ejectors within the frame or carriage of the weapon, as provided by the factory, arranged, which has its own inherent geometric variations and is also limited because of spatial limitations in some weapons in its application.

Accordingly, there has long been felt a need for kits for retooling firearms with improved ejector systems that address the above-described limitations of the prior art. Other advantageous features and characteristics of the present invention will become apparent from the following detailed description and the appended claims, taken in conjunction with the accompanying drawings and the foregoing technical field and background.

SHORT SUMMARY

In accordance with numerous embodiments, a carriage for a kit for retooling weapons of the type is presented, as it is used in the context of a firearm, which has a standard ejector or ejector, as provided by the factory, and the Firing ammunition is configured. The carriage includes a housing and an auxiliary ejector member rotatably disposed on the housing of the carriage. The Hilfsauswerferteil has a first part and a second part, the second part comprises a contact surface. The auxiliary ejector portion is configured to contact the ejector as provided at the factory when the housing of the carriage is retracted in response to firing of the firearm causing the contact surface of the second portion of the auxiliary ejector member to eject the cartridge case of the munition.

In accordance with one embodiment, a firearm kit includes: a firearm configured to fire ammunition, the firearm having an ejector as provided at the factory and a carriage as provided at the factory; and a conversion carriage configured to replace the carriage of the firearm as provided in the factory, the conversion carriage comprising a carriage housing and an auxiliary ejection member rotatably disposed on the carriage housing; the auxiliary ejector member having a first part and a first ejection part second part, wherein the second part comprises a contact surface, wherein the auxiliary ejector part is configured to contact the factory-provided ejector when the carriage housing is pushed backward in response to firing of the firearm, causing the contact surface of the second part of the auxiliary ejection part a cartridge case ejects the ammunition.

In one embodiment, a firearm includes an ejector as provided at the factory and a retrofit slide used in place of the carriage of the firearm as provided at the factory, the retrofit carriage including a carriage housing and an auxiliary ejector member rotatably connected to the carriage housing wherein the Hilfsauswerferteil has a first part and a second part, wherein the second part has a contact surface; wherein the auxiliary ejector member is configured to contact the ejector as provided at the factory when the carriage housing is pushed backwards in response to firing of the firearm causing the contact surface of the second portion of the auxiliary ejector member to eject a cartridge case of the munition.

BRIEF DESCRIPTION OF THE DRAWINGS

The exemplary embodiments are described below in conjunction with the following figures, wherein like reference numerals designate like elements.

1 is a fragmentary isometric view of a carriage of a retrofit kit having an auxiliary ejector portion in a rest position, in accordance with one embodiment.

FIG. 2 is an isometric cut-away view of the carriage of the retrofit kit shown in FIG. 1 in an ejection position. FIG.

FIG. 3 is a fragmentary isometric view of the retrofit kit shown in FIG. 1 in accordance with one embodiment. FIG.

4 is an isometric cut-away view of an example of an auxiliary ejector part in accordance with one embodiment.

FIGS. 5-6 illustrate various free body images of exemplary emergency ejector parts in accordance with various embodiments.

DETAILED DESCRIPTION

In general, the subject matter described herein relates to an improved slide for a retrofit kit comprising an auxiliary ejector portion that overcomes the limitations of the prior art by being moved by the rearward movement of the retrofit slide as it moves across the rear existing or intended ejector of the female housing of the weapon or the housing of the weapon, as it is provided at the factory, moves during a power stroke of the weapon. This means that the improved ejector will be "assisted" by (i.e., moved through) the rearward movement of the retrofit carriage relative to the ejector as provided at the factory.

First of all, it should be noted that there is no intention to be bound by any expressed or implied theory as set forth in the foregoing technical field, background, brief description or the following detailed description. Embodiments of the present disclosure may be described herein as functional and / or logical block components and various method steps. In addition, it will be apparent to those skilled in the art that embodiments of the present disclosure may be practiced in conjunction with any number of systems, and that the designs described herein are merely exemplary embodiments of the present disclosure. For the sake of brevity, conventional

Techniques related to firearms, conversion kits, ammunition and other functional aspects of the systems (and the individual operating components of the systems) will not be described in detail herein.

Referring to FIG. 1, an exemplary retrofit kit retrofit sled (or simply "retrofit sled" or "sled") 100 will be described. As will be appreciated, the carriage 100 is configured to move relative to a barrel assembly 120 (left and right along the z-axis in FIG. 1) due to the presence of rails or other mechanical constraints. In particular, the carriage 100 is configured to move to the right during a "recoil" resulting from the firing of a low energy cartridge.

As shown, the carriage 100 generally includes an auxiliary ejector portion (or simply "ejector portion" or "portion") 110 that is secured by a plug or rotatable member 104 that defines an axis of rotation 105 relative to the housing of the ejector portion 110. is rotatably secured to the carriage 100 and secured. The ejector portion 110 includes a first (or "upper") portion 111 and a second (eg, "lower") portion 112. In this condition or position (the "rest position"), the ejector portion 110 is biased by a suitable retention force (e. G via a spring, as shown in the following drawings) held in position. Alternatively, other components that provide the retention force may be employed.

In some embodiments, in the rest position 110, the ejection member fits into the carriage 100 so that it does not extend beyond the edge of the mouth 102 (i.e., along the negative z-axis as shown in Figure 1). In a particular embodiment, the ejector portion 110 has a surface that is substantially flush with the edge of the mouth 102.

Fig. 2 is a partial isometric view of the retrofit kit of Fig. 1 in an «ejection position». In particular, this figure shows the ejector 110 in a (clockwise) rotated position relative to the rest position of FIG. 1. As shown, the ejection member 110 is disposed opposite a spring 205 which provides a force on the back of the upper portion 111 of the ejection member 110 and causes the member 110 to jump back to its rest position after movement. It should be understood that the ejector portion 110 may be disposed opposite a spring (205) that acts as a plunger or other such intermediate structures. Furthermore, in Fig. 2, the ejector 202, as provided in the factory, shown, this is, as already mentioned above, connected to the frame of the firearm and engages (at 203) on the back 112 of the lower part 112 of the ejector 202, as provided in the factory, when the carriage 100 slides backwards (to the right in the figure).

As a result of the rotation of the ejection member 110, the lower part 112 contacts and helps to eject the cartridge case 201 (shown by the arrow leading away from the cartridge case 201). Accordingly, as can be seen, the ejector member 110, through its interaction with the ejector 202 as provided at the factory, can effectively provide an improved surface at a correct deviated position to affect the ejection of the cartridge case 201.

FIG. 3 provides another partial isometric view of the carriage 100 of the retrofit kit of FIG. 1. This figure shows an annular region of diameters (302) extending from a center 305 (corresponding to a position of a firing pin) that can be contacted by a lower part 112 of the ejector part 110. That is, because of the shape of the lower portion 112 of the ejection member 110, the ejector portion 110 of FIG. 3 would be most effective in ejecting cartridge cases having an outer diameter in the illustrated range. It can be seen that the ejector member 110 acts as an extension of the contact surface and correspondingly results in more effective contact with the edge of the fired cartridge case 201 and, accordingly, significantly improves the reliability of ejection.

Fig. 4 shows a close-up of an auxiliary ejector 110 in accordance with a possible embodiment. As shown, member 110 includes a bore 402 configured to rotatably receive rotary member 102 of FIGS. 1-2. In this embodiment, the part 110 includes a tapered rear surface 415 configured to contact the ejector 202 as provided at the factory (shown in FIG. 2). The member 110 also includes a "hockey stick" or a "J-shaped" bottom surface 112 defined by a contact surface 410 to contact the cartridge case 201 and eject the cartridge case 201 (FIG. 2). In other embodiments, the bottom surface 112 is "pedal-shaped" or simply of another, substantially constant width. The contact surface 410 is bounded by an upper edge 414 (which may be tapered as shown), a distal edge 413, a lower edge 412, and a chamfered edge 411, as shown. In general, it will be understood that the design of the carriage 100 in FIG. 1 includes a modified orifice structure that can accommodate the shape of the lower region 412 (and the entirety of the part 110) within the boundaries of the orifice 102, thus the contact surface 410 is substantially flush with the mouth 102.

While the above figures represent an embodiment in which the upper part 111 of the part 110 rotates about a central rotary member 104 and is limited by a pressing force acting on a back side of the upper part 111, the invention is not limited thereto and any form of limited lever configuration may be used. In this regard, FIGS. 5-6 illustrate simplified free body representations of exemplary emergency ejector parts in accordance with various embodiments. In particular, Fig. 5 illustrates the operating position, as shown in Fig. 1-2, wherein the applied force acts on the upper part and the ejector, as provided in the factory, acts on the bottom part of the part 110, which in a predetermined rotation around the rotary member 104 results. Fig. 6, on the other hand, shows the case in which the applied force provides a rotational moment, for example by a torsion spring or other such components.

Finally, Fig. 7 shows the case in which the rotary member 104 is disposed in the vicinity of the upper part 110 and in which the oppositely applied force and the ejector force of the factory-provided ejector under the rotary member 104 occur. It should be understood that the configurations shown in FIGS. 5-7 are not intended to be limiting, and that any mechanical arrangement that allows the member 110 to be fitted to the cartridge shell by interaction with the ejector is provided at the factory is, can be used. This means that the present invention anticipates any "assisted" arrangement of a movable ejector kit for an ejector kit as provided at the factory.

The ejector 110 may be made using various materials including hard metals such as steel, brass or aluminum, high strength polymers or the like. In some embodiments, steel is a particularly advantageous material because of its strength, cost and processability.

While at least one exemplary embodiment has been described in the foregoing detailed description, it should be understood that a vast number of variations exist. It should also be understood that the exemplary embodiment or exemplary embodiments are merely examples and are not intended to limit the scope, scope, or configuration in any way. Preferably, the foregoing detailed description will provide sufficient guidance to those skilled in the art to provide the exemplary embodiment or exemplary embodiments. It should be understood that various changes in the function and arrangement of elements may be made without departing from the scope of the disclosure as set forth in the specification, the following claims, and the legal equivalents thereof.

Claims (14)

claims A carriage retrofit kit used in connection with a firearm having a factory ejector and configured to fire ammunition, the carriage comprising: a carriage housing; and an auxiliary ejector member rotatably connected to the carriage housing, the auxiliary ejector member having a first part and a second part, the second part comprising a contact surface; wherein the auxiliary ejector portion is configured to contact the factory-provided ejector when the carriage housing slides backward in response to firing of the firearm, thereby causing the contact surface of the second portion of the auxiliary ejector member to eject the cartridge case of the munition. 2. The carriage according to claim 1, wherein the Hilfsauswerferteil has a surface which is in a resting state substantially flush with an opening of the carriage housing. 3. The carriage of claim 1, wherein the second part of the Hilfsauswerferteils generally has a «J» shape. 4. The carriage according to claim 1, wherein the second part has a curved contact surface to reduce mating in contacting the factory provided ejector. 5. The carriage according to claim 1, wherein the Hilfsauswerferteil is made of a material selected from the list consisting of: steel, aluminum, bronze and high-strength polymers. 6. The carriage according to claim 1, further comprising a spring member which is connected to the first part of the Hilfsauswerferteils to hold the Hilfsauswerferteil in the rest state in the carriage housing. The carriage of claim 1, wherein the weapon conversion kit is of the type used to fire low energy training ammunition. 8. A carriage for a refitting kit of a firearm, the carriage including an auxiliary ejector portion that interacts with a factory provided ejector to eject a cartridge case associated with an ammunition fired by the firearm. The carriage of claim 8, wherein the ammunition is low energy training ammunition. The carriage of claim 8, wherein the auxiliary ejector member interacts with the factory provided ejector by rotational movement relative to a carriage housing when contacted by the factory provided ejector. 11. A firearm configured to fire ammunition, the firearm comprising: a factory provided ejector; and a retrofit sled arranged in place of a factory provided sled of the firearm, the retrofit sled comprising a sled housing and an auxiliary ejection member rotatably connected to the sled housing, the sled housing having a first part and a second part; second part has a contact surface; wherein the auxiliary ejector portion is configured to contact the factory-provided ejector when the carriage housing slides backward in response to firing of the firearm, thereby causing the contact surface of the second portion of the auxiliary ejector member to eject the cartridge case of the munition. 12. The firearm of claim 11, wherein the retrofit sled is configured to enable the firearm to fire low energy training ammunition. 13. A firearm retrofitting kit comprising: a firearm configured to fire ammunition, the firearm having a factory ejector and a carriage provided at the factory; a retrofit carriage configured to replace the factory provided carriage, the retrofit carriage comprising a carriage housing and an auxiliary ejector member rotatably connected to the carriage housing, the auxiliary ejector member having a first part and a second part, the second part having a contact surface wherein the auxiliary ejector portion is configured to contact the factory provided ejector when the carriage housing slides backward in response to firing of the firearm causing the contact surface of the second portion of the auxiliary ejector member to eject the cartridge case of the munition. 14. The firearm retrofitting kit of claim 13, further comprising a low energy exercise ammunition cartridge configured to fire from the firearm when equipped with the retrofit sled.