Gas operated recoilless rifle cartridge case ejector

Abstract

A gas operated recoilless rifle cartridge case ejector system that automatically opens the venturi section(fig 1.3) and ejects out the spent case by transmitting the gas generated during each firing to a piston cylinder arrangement(fig 3.4) which pushes the piston to compress a spring(fig 3.5) and upon being released, the force is transmitted via a connecting rod(fig 8.2) to a rod(fig 8.3) that gets unlocked in the process by rotating a locking disc(fig 3.7) and the backward motion of the rod with the rifled bit(fig 12.5) at the end rotates a rifled rotating mechanism(f!g 12.4) which further rotates the venturi section(fig 1.3) to the open position andthe ejector pin(fig 10.3) also gets pushed backwards in the process to eject out the spent cartridge case, thus, the system can increase the rounds fired per minute by the recoilless rifle as it reduces the reloading time and makes it more friendly to be used even by a single user.

Description

FIELD OF THE INVENTIONThe Gas Operated Recoilless Rifle Cartridge Case Ejector is designed as an attachment for the 84mm Recoilless Rifles or for calibres close to it. The system is designed for ejecting out the spent cartridge case without the need for a loader to do so. The loader only needs to focus on loading the rounds to the rifle, whereas the system after each firing automatically opens the venturi section and ejects out the spent case, on its own or when the user releases the safety. Thus, the number of rounds fired per minute can be increased and in case of a target miss a quick loading can be very useful in the battlefield. Also, when a single person is in charge of the Rifle, he can easily unload and load it.BACKGROUND OF THE INVENTIONA recoilless rifle, recoilless launcher or recoilless gun, sometimes abbreviated "RR" or "RCL" (for ReCoilLess) is a type of lightweight artillery system or man-portable launcher that is designed to eject some form of countermass such as propellant gas from the rear of the weapon at the moment of firing, creating forward thrust that counteracts most of the weapon's recoil. This allows for the elimination of much of the heavy and bulky recoil-counteracting equipment of a conventional cannon as well as a thinner-walled barrel, and thus the launch of a relatively large projectile from a platform that would not be capable of handling the weight or recoil of a conventional gun of the same size. Technically, only devices that use spin-stabilized projectiles fired from a rifled barrel are recoilless rifles, while smoothbore variants (which can be fin-stabilized or unstabilized) are recoilless guns. This distinction is often lost, and both are often called recoilless rifles.Though similar in appearance to a tube-based rocket launcher (since these also operate on a recoilless launch principle), a recoilless weapon fires shells that use conventional gun propellant.The key difference from rocket launchers (whether man-portable or not) is that the projectile of the recoilless rifle or gun is initially launched using conventional explosive propellant rather than a rocket motor. While there are rocket-assisted rounds for recoilless launchers, they are still ejected from the barrel by the detonation of an initial explosive propelling charge.Because some projectile velocity is inevitably lost to the recoil compensation, recoilless rifles tend to have inferior range to traditional cannons, although with a far greater ease of transport, making them popular with paratroop, mountain warfare and special forces units, where portability is of particular concern, as well as with some light infantry and infantry fire support units. The greatly diminished recoil allows for devices that can be carried by individual infantrymen: heavier recoilless rifles are mounted on light tripods, wheeled light carriages, or small vehicles, and intended to be carried by crew of two to five. The largest versions retain enough bulk and recoil to be restricted to a towed mount or relatively heavy vehicle, but are still much lighter and more portable than cannons of the same scale. Such large systems have mostly been replaced by guided anti-tank missiles in first-world armies.Gas-operation is a system of operation used to provide energy to operate locked breech, autoloading firearms. In gas operation, a portion of high-pressure gas from the cartridge being fired is used to power a mechanism to dispose of the spent case and insert a new cartridge into the chamber. Energy from the gas is harnessed through either a port in the barrel or a trap at the muzzle. This high-pressure gas impinges on a surface such as a piston head to provide motion for unlocking of the action, extraction of the spent case, ejection, cocking of the hammer or striker, chambering of a fresh cartridge, and locking of the actioa The first mention of a gas piston, used in a single-shot breech-loading rifle, was by an American by the name of Edward Lindner in 1856, though the idea was patented in Britain. In 1866 an Englishman by the name of William Curtis patented a gas-operated repeating rifle, though it was never built. In 1883-5 in addition to blowback and recoil gas operation was patented by Hiram Maxim.Most current gas systems employ some type of piston. The face of the piston is acted upon by combustion gas from a port in the barrel or a trap at the muzzle. Early guns, such as Browning's "flapper'' prototype, the Bang rifle, and Garand rifle, used relatively low-pressure gas from at or near the muzzle. This, combined with larger operating parts, reduced the strain on the mechanism. To simplify and lighten the firearm, gas from nearer the chamber needed to be used. This high-pressure gas has sufficient force to destroy a firearm unless it is regulated somehow. Most gas-operated firearms rely on tuning the gas port size, mass of operating parts, and spring pressures to function. Several other methods are employed to regulate the energy. The Ml carbine incorporates a very short piston, or "tappet". This movement is closely restricted by a shoulder recess. Excess gas is then vented back into the bore. The M14 rifle and M60 GPMG use the White expansion and cutoff system to stop (cut off) gas from entering the cylinder once the piston has traveled a short distance. Most systems, however, vent excess gas into the atmosphere through slots, holes, or ports.Recoilless Rifles currently used by the forces needs a person to fire and another for loading or both can be done by one person. But after firing, the user or the loader needs to open the venturi portion, eject the spent cartridge case, take it out, load a new one and close the venturi section before another firing can happen. Thus, reducing the number of rounds fired per minute. Also, it increases the time taken for hitting anothertarget or re-hitting the target in case of a miss. The unloading and loading become extra difficult when a single person is using it, that to in a war field. With GORRCE system the spent case ejection and opening of the venturi section can be fully automated or semi-automated. The user or the loader only needs to put in a new Round and close the venturi section. Simple Gas operated systems used in small Automated Rifles cannot be used for this purpose as such systems can result in instability of the rifle during firing and would require gear systems to time the ejection of cartridges. Also, wouldn't give user the opportunity to decide whether to automatically ejects the cartridge as soon as firing has happened or eject it after the user decides to.disadvantages and to provide at least the advantages described below. Following are the objectives of the invention:Some of the main objectives behind the invention of the Gas Operated Recoilless Rifle Cartridge Case Ejector are:To develop a mechanical gas operated actuator for recoilless rifles, that opens up the venturi section and ejects out the hot spent case after each firing of the recoilless rifle.To develop a system that can be completely automated, semi- automatic or can be manually override by the user with ease as the situation demands.To develop a system that can be operated both by the person who fire and by the loader with ease.A system that can make theshoulder launched recoilless rifle weapon flexible to use in a battle field, so that the user can use it with ease under stress and pressure.To develop a system that to a greater extent can make the Recoilless rifle, a weapon that can be operated by a single person with ease.The objectives of the invention will become apparent after consideration of the following description of the invention and its preferred embodiments detailed hereinafter.DETAILED DESCRIPTION OF THE INVENTIONThe following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of exemplary embodiments of the invention as defined by the claims and their equivalents. It includes various specific details to assist in that understanding but these areSUMMARY OF THE INVENTIONAn aspect of the present invention is to address at least the above-mentioned problems and / or to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the invention. Accordingly, it should be apparent to those skilled in the art that the following description of exemplary embodiments of the present invention are provided for illustration purpose only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.Figs, discussed below, and the various embodiments used to describe the principles of the present disclosure in this patent document are by way of illustration only and should not be construed in any way that would limit the scope of the disclosure. Those skilled in the art will understand that the principles of the present disclosure may be implemented in any suitably arranged communications system. The terms used to describe various embodiments are exemplary. It should be understood that these are provided to merely aid the understanding of the description, and that their use and definitions in no way limit the scope of the invention. Terms first, second, and the like are used to differentiate between objects having the same terminology and are in no way intended to represent a chronological order, unless where explicitly stated otherwise. A set is defined as a nonempty set including at least one element.The objects and many attandant advantages of the invention will be more readily appreciated as the same becomes better understood by reference to the following detailed description which is to be considered in connection with the accompanying drawings wherein like reference symbols designate like parts throughout the figures thereof.BRIEF DESCRIPTION OF THE DRAWING ALONG WITH DESCRIPTION OF THE PREFFRED EMBODIMENTSAn aspect of the present invention is to address at least the above-mentioned problems and / or disadvantages and to provide at least the advantages described below. Brief description of drawings as well as further features and advantages of this method and apparatus according to the invention, will be clearer with the description of some of its pattern realizations that follow, made to illustrate but limit, with reference to the annexed drawings.The Gas Operated Recoilless Rifle Cartridge Case Ejector is a simple mechanical Gas operated actuator that opens the venturi section and ejects out the spent cartridge case after each firing of the recoilless rifle.The system has a unique mechanism for doing so and comes withmultiple modes to make it friendly for the user and the loader.Figure 1 shows an 84mm Recoilless Rifle with GORRCCE system attached to it.PARTI: 84mm Recoilless Rifle.PART2: GORRCCE system.PART3: Venturi section of the Recoilless Rifle.PART 4: The fire control system which consists of firing trigger, firing pin, safety etc.Figure 2 shows the design of the GORRCCE system.PART1: The cylinder section which holds the Gas Piston.PART2: The section which holds the spring.PART3: The section which guides the engaging mechanism to engage or disengage the connector to the sliding rod.PART4: The section which consists of the locking and the auto ejector units.PARTS: The ejector guide which the user can use to manually ejects the spent case out. Also, it connects the auto ejector to the ejecting pin.PART6: The casing which holds the rifled rotating mechanism.PART7: This units transmits the gas generated into the cylinder piston arrangement from the rifle barrel.PART8: The ON-OFF switch that engages and disengages gas flow onto the cylinder piston arrangement. It closes and opens the passage of the gas flow.PART9: The end portion of the rotating mechanism to which the venturi section is attached.Figure 3 shows the cut section and how the GORRCCE system works after the round is fired from the rifle.PART1: It shows how the GORRCCE system initially looks at the moment of rifle firing.PART2: It shows how different mechanisms works inside the GORRCCE system soon after the round exits the rifle. When the round is fired the gas generated reaches the cylinder piston arrangement(part 4) and pushes the piston backwards, excess gas entered will exits through the holes in the cylinder, the piston is attached to a spring(part 5) and compresses it, the end portion of the piston also has a connector with an engaging and disengaging groove lock, guided by a guided track system(part 6) which gets engaged to the top grooved portion of therod(part 8), at the same moment the connector also unlocks the rod(part 8) by triggering the locking unitfpart 7).PART3: It shows how the mechanisms inside GORRCCE system looks at the moment when the venturi is opened and the spent case is ejected out. The compressed spring (part 5) pushes the piston (part 4) backwards and the rest of the gas inside the cylinder is pushed out through the barrel, the rod(part 8) now engaged to the piston via the connector and unlocked by thelocking unit(part 7) also gets pushed backwards, the twisted portion at the bottom of the rod(part 8) like a rifling bit with grooves now passes through the rifled rotating mechanism(part 9) and rotates it, the end portion of the rifled rotating mechanism(part 9) is attached to a venturi and upon rotation it is opened. During this process the auto ejector(part 11) attached tothe ejector guide (part 10) also gets pushed by the rod which further pushes the ejector pin and ejects the spent case.Part 4: Cylinder piston arrangement.Part 5: Spring.Part 6: Guide casing with guide track.Part 7: Locking unit.Part 8: Rod.Part 9: Rifled rotating mechanism.Part 10: Ejector guide.Part 11: Auto ejector.Figure 4 shows how the lock unlock mechanism works.PART 1: When the user closes the venturi the rod starts moving forward, the small projections(part5) on the rod reaches the locking mechanism(part 6).PART 2: When the rod continuous to move forward the projections on the side of the rod(part 5) with its front portion slightly cut to get a tilted surface for easy sliding,slides through the locking mechanism(part 6) by slightly rotating the locking disc on it, this also compresses a small spring on it.PART 3: After the projections on the rod(part 5) passes through the locking disc on the locking mechanism(part 6) the locking disc rotates backs to its initial position by the spring on the unit. Since the rear portion of the projection is thicker than the front it cannot slide back through the locking disc and thus the rod will be unable to move backwards unless the locking disc is rotated, which can also be manually done by the user.PART 4: When the rifle fires, the gas generated pushes the piston backwards along with the connecting rod which also on its backward movement rotates the locking disc and unlocks the locking mechanism(part 6). The groove lock on the connecting rod(part 7) attaches to the top portion with grooves(part 8) on the rod. With the locking disc in unlock position the rod can now easily move backwards bythe force given to it by the loaded spring via the connecting rod.Part 5: Projections on the side of the rod.Part 6: Locking mechanism or locking unit.Part 7: Groove lock on the connecting rod.Part 8: Top portion of the rod with grooves.Figure 5 gives a detailed view of the locking unit.Part 1: The locking unit which comprises of mainly two parts the locking disc and the frame.Part 2: The frame which holds the locking disc(part 3). It is screwed to the casing whereas the locking disc is given small degree of rotation freedom. A small portion of the frame(part 5) holds a small circular spring attached to the small square bulging(part 7) on the locking disc which limits the locking disc's rotation and gives it a push back to its initial position.Part 3: Cut section view of the locking disc. The side of the port through which the rod enters is designed in a special cut manner(part 9) so that the projections on the rod can slide easily through them in its forward motion by rotating the disc on its own.The backward motion of the rod is restricted unless the locking disc rotates by external means.Part 4: A semi cut section view of the casing where the locking mechanism is fixed. The locking unit can be unlocked by rotating the locking disc usingthe circular bulging(part 6) on the top and rectangular bulging on the side(part 8), whereas the first one is done automatically by the connector and second one by the user for manually unlocking it.Part 5: The slot on the frame where spring is attached.Part 6: Circular Bulging on the locking disc which assists in the auto locking and unlocking.Part 7: Small square bulging on the locking disc to which thespring is attached.Part 8: Rectangular Bulging on the locking disc by which the user can rotate it to the unlock position manually.Part 9: Special cut portions on the sides of the port through which the rod passes.Figure 6 shows how the locking unit automatically unlocks.Part 1: Initially when the connector piston arrangement starts moving forwards the locking unit will be in the locked position.Part 2: The circular bulged portion of the locking unit(part 3) through which a specially cut flat guide bar(part 4) from the connector is sliding during the forward motion of the piston connector arrangement,slightly rotates the bulged portion of the locking unit(part 3) when the thicker portion of the guide bar(part 4) reaches it. The automatic unlocking of the rodtakes place just beforethe connector piston arrangement reaches the top grooved portion of the rod.Part 3: Circular Bulged portion on the locking disc in the locking unit.Part 4: Specially cut flat guide bar attached to the connector.Figure 7 shows how the connecting rod from the piston engages and disengages to the rod.PART 1: The connecting rod(part 4) attached to the end of the piston moves forward, whereas the rod is stationary and locked.PART 2: The groove lock(part 5) passes smoothly over the rod with ease. Since the grooves inside slides smoothly within the rectangular grooves in the top portion of the rod(part 6).PART 3: The connecting rod(part 4) is pushed forward by the piston and after it passes over the rod, the groove lock(part 5) on it is slightly rotated by the guide track. When the spring pushes back the piston the groove lock gets blocked or locked into the grooves on the top portion of the rod(part 6). The grooves on the groove lock now since it is rotated is unable to pass through the groove gaps on the top portion of the rod. Thus, the connecting rod pushes the rod backwards by the force exerted on it by the spring.Part 4:Connecting rod.Part 5:Groove lock.Part 6:Rectangular Grooves on top portion of the rod.Figure 8 gives a detailed view of the components that assists in the engaging and disengaging process.Part 1 :The casing where the connecting rod engages and disengages to the rod. The casing has a guide track(part 4) which guides the groove lock(part 5). The circular bulging(part 8) on the groove lock moves through the guide track. When the piston moves forwards the bulging on the groove lock is at the lower part of the guide track. When it reaches the front of the guide track, the bulging portion now sliding through the lower portion of the guide track slides upwards, thus, rotating the groove lock in the connector. Now the bulging is in the upper portion of the track and when the connector starts moving backwards it slides through the upper track. When the groove lock reaches the rod since it is rotated, the grooves(part 6) inside it gets locked to the grooves in the top portion(part 7) of the rod and starts pushing the rod along with it. The bulged portion then slides down to the bottom track, thus the groove lock is rotated back. Now since the groove lock is rotated the grooves inside it can now easilypass within the gap of the grooves at the top portion of the rod. For easy disengagement the backward motion of the rod will only be halted after the disengagement takes place.Part 2:It shows the piston connecting rod arrangement with the groove lock(part 5) on it.Part 3:The rod.Part 4:Guide track.Part 5 :Groove lock.Part 6:Groove inside the groove lock. The end portion of the groove is cut for better locking.Part 7:Grooves on the top portion of the rod.Figure 9 shows how the auto ejector works.Part 1 :When the connector pushes the rod backwards, the small projections(part 3) on the rod comes in contact with the auto ejector(part 4). The auto ejector has a circular hole in the middle with diameter equal to the rod, with a small clearance such that the rod can easily pass through it. The projections however cannot.Part 2:The projections(part 3) which is also used for the locking of the rod pushes the auto ejector(part 4) backwards along with the ejector guide(part 5) that is connected to the ejector pin which ejects the spent cartridge case. The spring(part 6) with low stiffness pushes back the auto ejector when the rod moves forward, it however lacks the ability to push the rod back.Part 3:Projections on the rod.Part4:Auto ejector.Part 5:Ejector guide.Part 6: Spring.Part 7:The thicker portion on the rod that prevents the further movement of the rod, since its diameter is bigger than the slot through which the rod slides.Figure 10 shows how the ejector pin works.Part 1 :It shows how the ejector pin(part 3) and the ejector guide(part 4) looks initially. In the picture the venturisection(part 6) is shown as opened for better view, in real working scenario when the venturi section is opened either automatically or manually by the user the ejector pin will get ejected outwards.Part 2:When the venturisection(part 6) is opened automatically or manually by theuser, the ejector pin(part 3) project outwards and ejects the spent case out. In case of the ejector pin getting stuck or GORRCCE system fails, the user can pull the ejector guide(part 4) or the loader can pull either the ejector pin handle(part 5) or the venturi section to eject out the spent cartridge case.Part 3:Ejector pin.Part 4:Ejector guide.Part 5:Ejector pin handle.Figure 11 shows how the horizontal movement of the rod rotates the rotating mechanism.Part 1 :The bottom part of the rod is like a rifling bit with grooves(part 3) and initially half of it is inside the rifled rotating mechanism(part 4) aligned with respect to the rifling. The venturisection(part 5) is closed.Part 2:When the rod gets pushed backwards the end part with the rifling bit(part 3) of the rod starts moving inside the rifled rotating mechanism(part 4) andstarts rotating it. This is because the rod is not free to rotate and due to rifling the rifled mechanism which is free to rotate, rotates with respect to the horizontal movement of the rod. The depth of rifling is done in such a way that the rifling bit won't slip out from it. The venturisection(part 5) attached to the end of the rotating rod rotates and opens.Part 3:Rifling bit with twisted grooves.Part 4:Rifled rotating mechanism.Part 5: Venturi section.Figure 12 shows the different components that rotates the venturi section.Part 1 iRifled rotating mechanism.Part 2:The casing which holds the rifled rotating mechanism.Part 3 :The rod. Rifling bit with grooves(part 5) is attached to the top portion of the rod.Part 4 :The inside of the top portion is rifled.Part 5:Rifling bit with grooves.Part 6:The bottom portion is to which the venturi is attached.Figure 13 shows how the semi-auto and fully auto modes of GORRCCE system works.Part 1 initially the small attachment(part 6) at the base of the venturi section is tilted upwards.Part 2; When the gunner pulls the trigger the firing pin hits the round and it is fired. Along with this a safety hold(part 4) is projected out from the firing trigger control unit, this is a common feature in all recoilless rifles out there, it is to prevent the venturing section from opening. Since the attachment(part 6) is now tilted upwards there is nothing blocking the venturi section from opening.Which gives the GORRCCE a fully auto mode.Part 3 :Now the attachment(part 6) is tilted downwards and when the gunner pulls the trigger and fires the round the safety hold(part 4) is projected outwards preventing the venturi section from opening. When the user releases the safety by pushing the small lever(part 5), the safety hold moves inwards and the venturi section opens. Since there is nothing blocking the attachment, which gives the GORRCCE a semi auto mode.Part 4:Safety hold.Part 5: Safety lever.Part 6:The tiltable rectangular metal bar attachment.Figure 14 shows ifthe GORRCCE system fails to work or gets stuck how the user can mechanically override the system.Part 1 :in case of a failure the user can loosen the tight screw(part 3) that tightens the venturi section(part 5) onto the GORRCCE system. A small portion of the rod is screw threaded where the tight screw(part 3) is attached. The gap between the tight screw and the hypoid gear circular disc(part 2)is where the venturi section is connected, there is a small clearance between the diameter of the hole of the connecting rod(part 6)that connects the venturisectionand the part of the rifled rotating mechanism rod to which it gets connected,thiswill give it a small freedom to rotate without actually rotating the rod. However when the screw is tightened the hypoid gear circular disc in the connector gets tightened to the hypoid gear circular disc(part 2) on the rifled rotating mechanism, allowing the venturi section to rotate along with it. Thus the user can manually open and close the venturi section by using the handle(part 4) on it, in case of a failure.Part 2:Hypoid gear or a circular disc with grooves on its face. On rifled rotating mechanism.Part 3:Tight screw.Part 4:Venturihandle.Part 5: Venturi section through which the exhaust gas ejects.Part 6:Connecting rod that connects the venturi to the rifled rotating mechanism.Part 7:The casing which holds the rifled rotating mechanism.Figure 15 shows how the gas generated inside the rifle barrel gets transmitted to the GORRCCE system.Part 1 :The cut section view of a GORRCCE system component through which the gas generated reaches the cylinder from the barrel. It will be attached to the gas exit port(part 8) of the barrel. The gas generated then passes through the inlet port(part 4) via the opening(part 7) in the switch and then expands at the gas expansion area(part 6) before entering the cylinder piston arrangement. The switch will be placed in the half way section(part 5) of the inlet port.Part 2:The ON-OFF switch which has a small opening(part 7) on it through which the gas can pass. When it is rotated it blocks the passage of gas through the inlet port(part 4) into the gas expansion(part 6) area. The switch can also be shifted from the side to the top position of the inlet section(part 1) by the manufacture according to the user requirements.Part 3:The cut section view of the 84mm rifled barrel. The gas generated exits through a small exit port(part 8) onto the GORRCCE system. The position of the exit port can be changed by the designer accordingly for better performance, but changes like including channels for directing gas from the exit ports to the inlet ports of the GORRCCE system in case if the exit port is far away needs to be considered.Part4:Inlet port.Part 5 ;The point where the ON-OFF switch is attached.Part 6: Gas expansion area.Part 7:Opening on the switch through which the gas can pass.Part 8:Gas exit port on the rifled barrel through which the gas exits onto the GORRCCE system. It will be made of strong materials that can handle extreme pressure and the hole through which it exits is of very small diameter to regulate the gas pressure entering the system.Figure 16 shows how the GORRCCE system can be modified by the manufacturer by adding attachments, casings or by making changes to the mechanisms involvedas per the user requirements.Part 1: A special cover that acts like an insulation or heat shield to prevent the heat generated in the cylinder from injuring the user. The small cut vents in the cover will allows the heat to exit and helps in the cooling process.Part 2:A modified ejector guideejector pin arrangement.Part 3:A new modified guide bar for the connecting rod. The top surface is shaped in such a way that it will smoothly slide under the cylinder and spring casing with stability.Figure 17 shows how easily the system can be dismantled. Each component or casings can be changed or serviced independently without changing the entire unit. The user can easily maintain, apply lubrication or clean the system.Figure 18 shows a modified version of GORRCCE system with casing.Part 1 :Casings that protects the components inside. Specially cut openings are given on top and bottom to allow air passage for cooling.Part 2:The spring arrangement is placed behind the piston cylinder arrangement to reduce the length of the GORRCCE system.Part 3:A projected attachment from the piston connecting rod arrangement connected to the spring arrangement that compresses the spring when the piston gets pushed backwards. The attachment is the projection from the flat guide bar attached to the piston connecting rod.Part 4:A modified ejector guide arrangement. The sliding of the ejector guide now takes place on a sliding rack on the casing.Part 5:The gas switch is shifted to the upper portion for better ease.Figure 19 shows the modified GORRCCE as shown in figure 18 attached to the 84mm recoilless rifle.Part 1:GORRCCE system.Part 2:Shoulder rest that reduces the recoil force felt on the gunner's shoulder. The slightly tilted shoulder rest will allow the gunner to hold it with comfort, in its absence he could face difficulty positioning the rifle on his shoulder, since the GORRCCE system is on his side of the rifle. Shoulder rest will be made using lightweight materials.Figure 20 shows the venturi gas intake system.Part 1:The venturi gas intake system through which some of the gas generated at the end of the rifle during firing is taken into the GORRCCE system. The gas is taken in by the small hole(part 3) on the circular portion of the venturi gas intake system, it then passes through the channel inside it and enters the cylinder gas intake portion(part 2) of the GORRCCE system. The circular portion of the system is screwed in at the end portion of the rifle such that no changes to the liner / rifle barrel is required. The venturi gets closed behind the circular portion of the venturi gas intake system, such that gas before getting exited through the venturi can be captured.PART 2: Gas intake portion of the piston cylinder arrangement inside the GORRCCE system.Part 3:The small hole inside the circular portion of the venturi gas intake system through which the gas enters.Figure 21 shows a linear variant of the GORRCCE system on a recoilless rifle, where the components of the system are linearly placed on the top to give better comfort for the user while he places the rifle on his shoulders and to distribute the weight of the system evenly on the rifle for better stability. Detailed description on its components is given in figure 22.Part 1: Switch that activates GORRCCE.Part 2:Manual unlocking switch.Part 3:Manual ejector lever.Figure 22 gives a detailed view on how the components are placed on the linear variant of the GORRCCE.Part 1 :Gas piston.Part 2;Gas intake unit that distributes the gas from the rifle to the cylinder. Part 3: Spring.Part 4:The auto unlocking and locking unit, detailed description on its working is given on figure 5 and figure 4.Part 5:Rod with grooves at the end as shown in figure 7.6 which assists in the engaging and disengaging of the connecting rod(part 16) to the rod.Part 6:Rod with projections on the side as shown in figure 4.5 which assists in the locking and unlocking process.Part 7 :Circular disc along with a spring that assists in the auto ejection as shown in figure 9.4.Part 8;A slightly circular shaft whose one end is attached to the rod with rifled bit(part 9) and other connected to the rod with projections(part 6) and to the rod with grooves at the end(part 5).Part 9:Rod with rifled bit at the end as shown in figure 12.5. detailed description on how it work is shown in figure 11.Part 10;Rifled rotating mechanism as shown in figure 12.4, detailed description on how it works is shown in figure 11.Part 11: Venturi tight cap, detailed description on how it works is shown in figure 14.Part 12:Ejector guide which is coupled to the ejector pin and to the auto ejection unit, detailed description on how it works is shown in figure 10.Part 13:The shaft that connects the piston(part 1) spring(part 3) arrangement to the rod(part 5) via a connecting rod(part 16) and assists in the unlocking process by using a specially cut attachment(part 17).Part 14:The portion of the shaft(part 13) that allows it to be coupled to the piston.Part 15:The potion of the shaft(part 13) that allows it to be coupled to the spring.Part 16:The connecting rod as shown in figure 7.4 in the shaft(part 13) that allows it to engage and disengage to the rod(part 5). Detailed description on how it works is shown in figure 7.Part 17:An attachment on the shaft(part 13) that has a specially cut portion on it such that it can automatically unlock the locking unit(part 4), detailed description on how it works is shown in figure 6.Part 18. Switch that allows the passage of gas to the GORRCCE system.Part 19:Rifled rotating mechanism casing.Part 20:Piston end cover.Part 21 :Gas piston cylinder.Part 22:Spring casing.Part 23:Lock-unlock casing.Part 24:Guide casing as shown in figure 8.1.Part 25: Venturi section that allows the exit of gas from the rifle that helps in countering the recoil force with an attachment at the bottom as shown in figure 13.6.Part 26:Sliding Guide rod that gives stability to the shaft(part 8).The above description of a basic design is able to show the invention from the conceptive point of view, in a way that others, by using the art, can easily modify and / or adapt in different applications this specific design without further research and without going apart from the invention concept, and therefore it is intended that these adaptations and transformations will be considered as equivalent to this specific realization. The means and materials to make the many described functions can be various in nature without exiting the area of the invention. It is intended that the expressions or the terminology use have a simple descriptive aim and therefore not limiting.While a preferred embodiment of the present invention has been described hereinabove, it is intended that all matter contained in the above description and shown in the accompanying drawings be interpreted as illustrative and not in a limiting sense and that alt modifications, constructions and arrangements which fall within the scope and spirit of the invention may be made.

Claims

I Claim,1. A gas operated recoilless rifle cartridge case ejector system that automatically opens the venturi section(fig 1.3) and ejects out the spent case by transmitting the gas generated during each firing to a piston cylinder arrangement(fig 3.4) which pushes the piston to compress a spring(fig 3.5) and upon being released, the force is transmitted via a connecting rod(fig 8.2) to a rod(fig 8.3) that gets unlocked in the process by rotating a locking disc(fig 3.7) and the backward motion of the rod with the rifled bit(fig 12.5) at the end rotates a rifled rotating mechanism(fig 12.4) which further rotates the venturi section(fig 1.3) to the open position andthe ejector pin(fig 10.3) also gets pushed backwards in the process to eject out the spent cartridge case, thus, the system can increase the rounds fired per minute by the recoilless rifle as it reduces the reloading time and makes it more friendly to be used even by a single user.

2. A system as claimed in claim 1 in which the user can close and open the venturi section(fig 1.3) without any load since, the piston(fig 3.4) spring(fig 3.5) arrangement gets coupled to the rod(fig 8.3) only after the firing has happened and the system has an engaging and disengaging mechanism which works in a manner such that after the firing happens, the piston spring arrangement gets coupled to the rod via a groove lock placed at the end of the connecting rod(fig 8.2) from the piston, guided by a guide track(fig 8.4) which rotates it so that the grooves inside the groove lock(fig 8.6) gets engaged or blocked by the grooves(fig8.7) on the rod and unlocks or disengages when rotated back by the guide track after the rodgets pushed backwards.

3. A system as claimed in claim 1 characterized by an auto locking feature such that the useronly needs to close the venturi section to get it locked,when the rod(fig 8.3) is pushedforward upon closing of the venturi section(fig 1.3), the projections on the rod(fig 4.5) andthe projections on the slots on the locking unit(fig 5.9) through which the projections on therod passes are cut in a mariner so that they pass through the locking unit by rotating it on itsown, However, the backward motion of the rod is prevented such that the locking unit needsto be rotated by any external means for the projections on the rod to pass back through theslots on the locking unit and this can be manually done by the user by pushing the lever(fig5.8) projected out from the locking disc(fig 5.3) or the system has an automatic unlockingfeature which comes into action soon after the firing and therefore the gas generated pushesthe piston connecting rod arrangement backwards and the guide bar(fig 6.4) attached to theconnecting rod which is cut in a manner such that there is a greater thickness at the end,rotates the circular bulging(fig 6.3) on the locking disc when it slides through it, thus thelocking unit gets unlocked by rotating the locking disc.

4. The system as claimed in claim 1 automatically opens the venturisection(fig 1.3) when therod gets pushed backward by the piston connecting rod arrangement. The backward andforward motion or sliding of the rod is converted into rotation by sliding the rifled bit(fig12.5) with twisted grooves at the end of the rod through the rifled rotating mechanism(fig12.4). The rifled rotating mechanism which is free to rotate, rotates to compensate for theeasy sliding of the rifling bit with twisted grooves through the rifled portion inside it. Theventuri section is attached to the rod at the end of the rifled rotating mechanism, thus, when it is rotated the venturi section also rotates along with it.

5. The system as claimed in claim 1 automatically ejects the spent cartridge case with the help of an auto ejector(fig 9.4), which is basically a circular disc supported by a spring(fig 9.6) with a hole having diameter equal to the rod with small clearance for the rod to slide smoothly through it and the projections on the rod(fig 9.3) which is also used for locking, when comes in contact with the circular disc during the backward motion of the rod, pushes back the circular disc which is further attached to an ejector guide(fig 9.5) connected to the ejector pin(fig 10.3) that ejects out the spent case and the auto ejector is then pushed back to its initial position by the spring when the rod moves back, the spent case can also be manually ejected out by the user or the loader by pulling the ejector guide or the ejector pin handle which is linked to the ejector pin. In case the ejector pin gets stuck or in scenarios where the system fails to work.

6. The system as claimed in claim 1 characterized by venturi section which can be manually opened in case of a mechanical failure by loosening the tight screw(fig 14.3) which tightens the venturi section to the system and gives it the freedom to rotate over the rod without rotating it.

7. A system as claimed in claim 1 can be fully automated or semi-automated by blocking the attachment(fig 13.6) on the venturi section when it comes in contact with the safety hold(fig 13.4) which pops out of the fire control trigger unit when the user pulls the trigger and when the attachment is tilted up the venturi can open smoothly without being blocked by the safety hold. The venturi section being blocked can put the entire system to hold.

8. A system as claimed in claim 1 can be deactivated or activated by a switch(fig 15.2) that can be rotated to OFF position that blocks the passage of hot gas at the inlet port(fig 15.4) of the system entering from the exit port(fig 15.8) of the rifled barrel and allows the passage of hot gas when rotated back to the ON position.

9. A system as claimed in claim 1 charecterised by the addition of a venturi gas intake system(fig 20.1) that can be screwed at the end of the rifle before the venturi section, that takes in some of the gas generated at the end portion of the rifle before it exits through the venturi and supply the gas to the piston cylinder arrangement of the system, such that the need to put holes or make any changes to the liner / rifle barrel can be avoided, allowing it to be used on existing recoilless rifles too.

10. A system as claimed in claim 1 wherein the difficulty in positioning the rifle with on the gunner's shoulder can be eased by using a tilted thick shoulder rest(fig 19.2) made by lightweight materials.