Patent Document

FIELD OF INVENTION 
     The present invention relates to the fashioning of extensions on ammunition magazines and more particularly to pull-tab and loop handle extensions that are positioned on the floor end of ammunition magazines by either replacing the floor plate, modifying the floor plate or extending the side magazine walls in order to aid with both the extraction of said ammunition magazine from ammunition pouches and the insertion into a weapon. 
     BACKGROUND OF THE INVENTION 
     The use of loops to aid in the removal of ammunition magazines from a storage compartment is known in the prior art. Likewise, the use of handle attachments or tabs or other extensions to carry ammunition magazines and other objects is also known. These attachments and modifications, while suitable for their individual purposes, are not as suitable for the purpose of this invention, namely providing an extension that is of one piece with an ammunition magazine or with the floor plate of said magazine for the purpose of extraction of said magazine from ammunition pouches worn on the user. For example, the current practice of forming duct tape tabs and cord loops on ammunition magazines; magazine grips by Magpul Industries Corporation; GLOCK grip enhancers by PIERCE GRIP; U.S. Pat. No. 4,796,937 to Andrea; U.S. Pat. No. 4,442,962 to Musgrave; U.S. Pat. No. 3,000,527 to Jennings, et al.; U.S. Pat. No. 2,825,991 to Stadelmann; U.S. Pat. No. 2,205,967 to Wise; U.S. Pat. No. 1,797,951 to Gaidos; U.S. Pat. No. 1,596,076 to Clancy; U.S. Pat. No. 1,245,499 to Orme And U.S. Pat. No. D-33,384 to Thorn are all illustrative of the prior art. 
     CURRENT PRACTICE 
     FORMING DUCT TAPE TABS AND CORD LOOPS 
     NO PATENT NUMBER 
     Currently, in the field, soldiers use either loops of parachute cord attached to ammunition magazines by duct tape or they form tabs by folding duct tape over the butt end of their ammunition magazines. The loops and tabs aid soldiers in the extraction of said magazines from ammunition pouches carried on the user. However, the duct tape tends to wear and often needs replaced. The duct tape also leaves a sticky residue when removed and provides no other benefit other than the increased friction or fastening a pull loop to the ammunition magazine. Soldiers have also extracted the inside portion of a length of parachute cord, leaving the casing, tied said casing together and positioned the formed loop so that it encircles the floor plate of an ammunition magazine before they replaced said floor plate, with the loop, in the magazine. Thus they have formed a loop, extending from the bottom of the magazine. 
     MAGPUL INDUSTRIES CORPORATION 
     MAGAZINE GRIPS 
     U.S. APPLICATION SERIAL NUMBER 09/293,403 
     INVENTOR: Richard M. Fitzpatrick 
     Magazine grips are thermoplastic sleeve and handle combinations which fit on the floor end of ammunition magazines. When the handle is pulled, the sleeve grips the magazine and enables the user to extract the ammunition magazine from an ammunition pouch. The handle may take any shape, though loops and tabs are most common. 
     PIERCE GRIP 
     GRIP ENHANCERS 
     U.S. PATENTS PENDING 
     PIERCE GRIP provides grip enhancers for GLOCK brand handguns. These grip enhancers replace the floor plate of GLOCK handgun magazines and are thicker than said floor plates, thus providing, with the handle, a larger gripping surface than with the standard floor plate and handle. They are often color coded to reflect the type of ammunition used in a particular magazine. 
     ANDREA, DOUGLAS J 
     INSULATING SHELL AND POURING AID FOR CONTAINER AND METHOD FOR MAKING THE SAME 
     U.S. Pat. No. 4,796,937 
     An insulating shell and carrier for a bottle in which the shell is formed of an insulating material. The shell has a main body section, with an opening into which the bottle fits, and an integral handle. The handle is a loop that the user may grasp to hold the bottle while pouring the liquid or may otherwise use to carry the bottle. The shell is preferably made out of a flat sheet of material, cut to the desired shape and size and joined at the edges to form a configuration matching the bottle. 
     MUSGRAVE, DANIEL D 
     MAGAZINE HANGER 
     U.S. Pat. No. 4,442,962 
     A cartridge magazine hanger adapted for quick removal of a magazine therefrom using only one hand. The magazine is supported by engagement of at least one of its feed lips with a support on the hanger. The hanger is equipped with loops that may be used to attach the hanger to any structure, vehicle, a person&#39;s clothing or even the weapon itself The hanger also covers the feed mouth of the magazine to protect the ammunition from damage and prevent the entry of extraneous matter into the magazine. 
     JENNINGS, W. C, ET AL 
     HANDLE FOR CONTAINERS 
     U.S. Pat. No. 3,000,527 
     This invention is a handle for containers, particularly glass milk containers. The handle is made of an elastomeric material comprising a band and finger grip potions. When warmed, the band portion slips over the rim of a glass milk container. When cooled, the band portion of the handle is not elastic enough to allow the container rim to slip out, thus allowing the user to carry the container using the finger grip portion of the handle. 
     STADELMANN, RUDOLF 
     MAGAZINE ARRANGEMENT FOR MEDIUM CALIBRE GUNS 
     U.S. Pat. No. 2,825,991 
     This arrangement is for medium caliber guns (20-40 mm caliber). The arrangement is essentially a box with one side open to allow for loading ammunition into the magazine. The top of this arrangement features a detachable metal loop to allow the user to extract the arrangement from an ammunition chest. 
     WISE, CHARLES REX 
     RIFLE MAGAZINE 
     U.S. Pat. No. 2,205,967 
     Magazine designed to increase capacity of a rifle and relating the ammunition in a manner that automatically feeds ammunition through the rifle. A loop is provided on the butt and of the magazine so that it may be attached to the user&#39;s clothing or other device. 
     GAIDOS, ALONZO F 
     FIREARMS MAGAZINE 
     U.S. Pat. No. 1,797,951 
     Magazine designed to expedite reloading when the magazine is empty. To this end, the magazine uses a retractable sliding plate to allow access to the interior of the magazine and to depress the follower plate, allowing ammunition to be loaded into the magazine. Attached to the sliding plate is a metal finger loop, allowing the user to pull the sliding and follower plates down. 
     CLANCY, KENNETH A 
     BOTTLE CARRIER 
     U.S. Pat. No. 1,596,076 
     This bottle carrier is a single elongated strip of flexible material designed to accommodate assorted sizes of bottles. The strip accomplishes its purpose by means of two longitudinally extending slits cut in the strip. Using these slits, the strip may be looped around the neck of the bottle, under the rim. The free ends are then threaded through the slits and brought together to form a carrying loop. 
     ORME, GARDNER P 
     FIREARM MAGAZINE 
     U.S. Pat. No. 1,245,499 
     This magazine is designed to aid in the compression of the follower spring and, thus, aid in reloading the magazine. The invention is a magazine with its side designed to accommodate the insertion of a pin. The pin is then used to compress the follower spring by simply squeezing the user&#39;s fingers, which are placed over the pin, towards the user&#39;s thumb, placed on the underside of the magazine. A loop, which is not necessary for the invention, is nonetheless displayed in the drawings of this invention on the butt end of the magazine. Due to its size relative to the magazine, it can be presumed to be used for standard attachment purposes. 
     THORN, OLIVER 
     GUN-CARRYING ATTACHMENT FOR CYCLES 
     U.S. Pat. No. D-33,384 
     This simple design comprises of two bands of material. One forms an ellipse and the other forms a carrying loop with its ends attached to the elongated sides of the ellipse. The gun is presumably held in place by a small curved member placed on the ellipse. 
     While the aforementioned inventions accomplish their individual objectives, they do not describe an integral extension that is used primarily for the extraction of ammunition magazines from ammunition pouches, as evidenced by the duct tape modifications used in the field. Handle and loop attachments used in the prior art are mainly used for affixing an ammunition magazine to other objects, such as clothing or vehicles, or to carry bottles. In one of the two cases where handle attachments are used for extraction, the handle is a simple metal wire forming a loop and is not adapted for use in the various positions a user may wear an ammunition pouch. There are also disadvantages with the duct tape modifications, particularly regarding removal and in the amount of slack in a loop of parachute cord. While the PIERCE GRIP grip enhancer discloses replacement of the floor plate, the enhancer is designed for improving the grip a user has on his gun, not the ammunition magazine, and does not disclose any type of handle extension. Magazine grips, by Magpul Industries Corporation, disclose a handle which is attached to an external sleeve, not an integral handle. In this respect, the extensions according to the present invention depart substantially from the usual designs in the prior art. In doing so, this invention provides integral extensions that are primarily designed for the purpose of aiding the extraction of ammunition magazines from pouches worn on the user. 
     SUMMARY OF THE INVENTION 
     In view of the foregoing disadvantages inherent in the known types of attachments and grip extensions, this invention provides extensions for use on the base of ammunition magazines. As such, the present invention&#39;s general purpose is to provide a new and improved integral extensions that will aid in the extraction of ammunition magazines from pouches worn on the user. 
     To attain this, the invention has three individual embodiments. The first embodiment essentially comprises a replacement floor plate, typically molded of a hard plastic or metal, with a tab or loop extending from the replacement floor plate, typically molded from a more resilient plastic or thermoplastic compound. The product would be manufactured by using a bifurcated molding process where the floor plate portion would be molded first and the extension would be molded onto the floor plate in a second molding step. Alternatively, the floor plate may be molded or fashioned with at least one anchoring hole and the handle then either injection molded onto the floor plate or pre-molded with at least one anchoring means and mechanically coupled to the floor plate. The second embodiment would require retrofitting all existing floor plates with at least one anchoring hole along the center of their elongated sides or boring a plurality of holes through a floor plate and either injection molding or mechanically coupling a handle onto the floor plate. In the third embodiment, a plastic magazine would be molded with a resilient loop or tab on its base end or a handle may be attached to the base end by mechanical, ultrasonic welding, or adhesive means. 
     These designs have numerous advantages over the prior art. First, the extensions are integral with the magazine and have a lower incidence of grip failure. Second, the first two embodiments are easily replaceable if and when necessary. Third, the standard means of ejection causes the butt end of the magazine to impact the ground. The molded handle portion acts as a shock absorber for the magazine when it is ejected from the rifle and reduces impact damage to the magazine. Fourth, the extensions abut against the lid of the pouch. This abutment effectively anchors the magazine against the pouch lid and reduces noise caused by the rattling of magazines against pouch when the user is moving. 
     The more important features of the invention have thus been outlined in order that the more detailed description that follows may be better understood and in order that the present contribution to the art may better be appreciated. Additional features of the invention will be described hereinafter and will form the subject matter of the claims that follow. 
     The primary object of the present invention is to provide integral extensions for use on ammunition magazines to aid in their extraction from ammunition pouches. 
     It is another object of the invention to provide extensions that will accommodate users by being adaptable to individual styles of extraction, locations of the pouch on the user, and location of the rifle&#39;s ammunition chamber. 
     It is an additional object of the invention to provide extensions that are easily removed for replacement. 
     It is yet another object of the invention to provide extensions that will absorb some of the shock of impact when an ammunition magazine is ejected from a rifle. 
     It is a further object of the invention to provide extensions that will deaden noise caused by rattling of ammunition magazines in the ammunition pouch 
     It is a still further object of the invention to provide extensions, the manufacture of which is readily adaptable to create such attachments for different sizes and calibers of hand held weapons. 
     It is an even further object of the invention to provide extensions that are adaptable towards the thickness of a user&#39;s fingers or use of gloves. 
     Lastly, it is an object of the invention to provide extensions that are easy and economical to manufacture so as to keep cost to the consuming public reasonable. 
     Other objects of this invention will appear from the following description and appended claims, reference being made to the accompanying drawings forming a part of this specification wherein like reference characters designate corresponding parts in the several views. 
     Before explaining at least one embodiment of the invention in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangements of the components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced and carried out in various ways. Also it is to be understood that the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting. 
     As such, those skilled in the art will appreciate that the conception, upon which this disclosure is based, may readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present invention. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present invention. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a perspective view of a standard M-16 magazine. 
     FIG. 2 is an exploded view of the magazine in FIG.  1 . 
     FIG. 3 is a perspective view of the magazine of FIG. 1 with the invention installed. 
     FIG. 4 is a perspective view of a magazine with a sliding type floor plate with the invention installed. 
     FIG. 5 is a perspective view, as seen from the bottom, of the invention as a standard replacement floor plate with a tab design. 
     FIG. 6 is a perspective view, as seen from the bottom, of the invention as a standard replacement floor plate with a loop design. 
     FIG. 7 is a perspective view, as seen from the bottom, of the invention as a retrofitted floor plate with a loop design. 
     FIG. 8 is a perspective view, as seen from the bottom, of the invention as a sliding replacement floor plate with a loop design. 
     FIG. 9 is an exploded view of the invention, as seen in FIG.  5 . 
     FIG. 10 is an exploded view of the invention as seen in FIG.  6 . 
     FIG. 11 is an exploded view of the invention as seen in FIG.  7 . 
     FIG. 12 is an exploded view of the invention as seen in FIG.  8 . 
     FIG. 13 is a perspective view of the invention detailing the side extension embodiment 
     FIG. 14 is an exploded view of the adhesive embodiment of the invention. 
     FIG. 14 a  is a perspective view of the invention in FIG. 14 assembled. 
     FIG. 15 is an exploded view of the invention using anchoring nodes on the magazine. 
     FIG. 15 a  is a perspective view of the invention in FIG. 15 assembled 
     FIG. 16 is an exploded view of the invention using rivets to fasten the handle to the magazine. 
     FIG. 16 a  is a perspective view of the invention in FIG. 16 assembled. 
     FIG. 17 is a perspective view of a handgun magazine with a sliding floor plate. 
     FIG. 17 a  is an exploded view of the magazine in FIG.  17 . 
     FIG. 17 b  is a perspective view of a modified floor plate for the magazine in FIG.  17 . 
     FIG. 17 c  is a perspective view of the magazine in FIG. 17 with the floor plate of FIG. 17 b  installed. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     With reference now to the drawings, the preferred embodiment of the new and improved integral extensions for ammunition magazines embodying the principles and concepts of the present invention will be described. Specifically, it will be noted in the figures, especially FIGS. 5,  6 , and  9 , that the invention relates to the addition of extensions to the floor plate of ammunition magazines and to the addition of similar extensions to the elongated walls of plastic ammunition magazines. Before the invention can be explained, a brief description of the structure of an ammunition magazine, shown in FIGS. 1 and 2, is necessary. The generic magazine  2  is a relatively simple structure. The outer casing  4  is suitably sized and shaped to receive ammunition. The casing  4  has a feed end  6  and a floor, or butt, end  8 . The feed end  6  is designed to engage the weapon. Inside the casing, a follower plate  10  is in contact with the follower spring  12 , which is in turn, in contact with the floor plate  14 . When ammunition is loaded into the feed end  6 , the follower plate  10  compresses the follower spring  12  against the floor plate  14 . This compression is relaxed when a round of ammunition is loaded into the weapon&#39;s firing chamber and the spring  12  therefore raises the follower plate  10 , and associated ammunition relative to the magazine  2  and weapon. The raising readies the next round of ammunition for loading into the weapon&#39;s firing chamber after the first round is used and expelled. Referring to FIGS. 17 and 17 a , a similar construction for handgun magazines is shown, including casing  174 , feed end  176 , floor end  178 , follower plate  180 , follower spring  182 , floor plate  184  and locking plate  190 . 
     The first embodiment of the invention, shown in FIGS. 3 and 4, is a substitute floor plate  32 ,  42  positioned on the floor end of an ammunition magazine. The floor plate  32 ,  42  is ideally molded from a rigid plastic or metal, with a handle  34 ,  44  protruding from said substitute floor plate  32 ,  42 . The handle  34 ,  44  can be molded onto the substitute floor plate  32 ,  42  by using a bifurcated molding process where the floor plate  32 ,  42  is molded from a rigid plastic and the handle  34 ,  44  is ideally molded from a softer, more resilient material, such as thermoplastic, and attached to the substitute floor plate  32 ,  42 . The two staged molding process may include either molding the handle  34 ,  44  directly onto the floor plate  32 ,  42 , so that the handle  34 ,  44  and floor plate  32 ,  42  are of one piece, or molding the floor plate  32 ,  42  with a plurality of holes and then the handle  34 ,  44  may be injection molded, onto the floor plate  32 ,  42 , shown in FIGS. 5,  6  and  8 . Alternatively, The handle  34 ,  44  may be molded separately, shown in FIGS. 10 and 12, having a grip end  31 ,  41  and a fastening end  33 ,  43 . The fastening end should have at least one terminus  35 ,  45 , each with at least one anchoring means, such as the anchoring nodes  38 ,  48  shown in FIGS. 10 and 12, and then mechanically coupled to the floor plate  32 ,  42 . The handle may take any shape, such as a loop  34 , as shown in FIG. 6, or a tab  94 , as shown in FIG.  5 . The loop and the tab are both preferable, depending on the user&#39;s preferences and the design of the magazine. A user may find the tab version of FIG. 5 preferable when using the generic magazine shown in FIGS. 1 and 2, where the floor plate  14  is secured with a plurality of tabs  20 . A loop may interfere with the tabs  20  and hinder installation. Other magazine designs have a sliding and locking floor plate  42 , as shown in FIG. 4, and therefore would not have the hindrance of tabs. For these designs, either the tab version of FIG. 5 or the loop version of FIG. 6 could be used. 
     Either handle  34  or  94  should extend approximately 1.0 to 1.5 inches from the substitute floor plate  32 ,  92 . This will enable the handle  34 ,  94  to engage the lid of an ammunition pouch. With the loop handle version, see FIG. 10, the loop  34  should have a height of about 1.0 to 1.5 inches and a width varying from 1.0 to 0.5 inch. The loop  34  is thicker at its apex  37  so as to better withstand the stress of pulling the invention and the magazine out of the ammunition pouch by the loop  34 . The width of loop  34  at apex  37  is less than the rest of loop  34  so that a user&#39;s finger may curl around loop  34 . For ease of fabrication and to increase friction between a finger and the loop  34 , the underside of the apex  37  may be molded in a step-like pattern  39 , as shown in FIGS. 10 and 12. The tab  94  in FIG. 9 may be molded with a variety of shapes, including but not limited to ovals, cylinders, knobs, and wedges. No limitation as to shape should be inferred from the drawings. For this variation, a small reinforced hole  100  should be provided in the tab  94  so that a user may hook the magazine onto a carabineer after ammunition is spent. In both variations, roughened recessed areas  40 ,  99  should be provided. In the loop version of FIGS. 10 and 12, recessed areas  40 ,  50  extend along the length of loops  34 ,  44 . In the tab version shown in FIG. 9, any recessed areas would be determined by the shape of tab  94 . For the version of the tab shown in FIG. 9, recessed areas  99  are provided on the planar faces of the tab  94 . Also, the top of the tab  94  is molded with a ridge  97  to facilitate gripping the tab  94 . 
     In the second, retrofitting, embodiment, shown in FIGS. 9,  10 ,  11  and  12  the floor plate  32 ,  42  is modified to accommodate the attachment of a handle  34 ,  44 . Small holes  36 ,  46 , similar to those molded into the substitute floor plate  32 ,  44  of the previous embodiment, as shown in FIGS. 9,  10 , and  12  may be bored into a floor plate  32 ,  42  and a handle  34 ,  44  either injection molded or mechanically coupled onto the modified floor plate as in the previous embodiment. As shown in FIG. 11, holes  106  may be positioned along the sides of the floor plate  102 , thus forming notches along the floor plate&#39;s elongated ends and a handle  104  having a grip end  101  and a fastening end  103  is fastened to the floor plate  102 . An attachment means  108  is located at the handle&#39;s fastening end  103  fits around the floor plate  102  at the notches  106 . The attachment means  108  may either be a continuous bracing loop, a plurality of tabs or a plurality of continuous bracing loops, as shown in FIG. 11, that are threaded around the notches  106 . The attachment means may be affixed to the floor plate  102  with some type of adhesive, such as epoxy or glue, or ultrasonically welded, assuming the floor plate  32 ,  42  and handle  34 ,  44  are plastic. The attachment structure should be thin enough to not interfere with the normal operation of the ammunition magazine, that is to say not interfere with the follower spring  12  of FIG. 2 or the locking plate  190  of FIG. 17 a , but thick enough to withstand repeated use, usually ¼ inch to ¾ inch. 
     In the third embodiment, shown in FIGS. 13 and 14, at least one wall  132  of a plastic ammunition magazine  130  is extended above the level of the floor plate  138 . The extension  134  may be molded into whatever shape a user desires, including extending a plurality of sides and molding them together in some fashion, such as a loop  136  in FIG. 13. A handle may be added to the magazine in a number of different methods. Referring to FIG. 15, the magazine may be molded with an anchor point  152  and a separate handle  154  may be either molded onto the anchor directly or may be ultrasonically welded onto the magazine  150 . Handle  154 , if molded separately, may have molded notch  156  to interface with the anchor point  152 . A handle may also be attached mechanically to a non-plastic magazine, such as by the rivets  162  show in FIG. 16 or by an adhesive anchoring base  142  in FIG.  14 . In FIG. 14, the improvement is the use of the handle  144 , which is superior to parachute cord and may be molded in any fashion disclosed above, along with-broad adhesive bases  142 , with a temporary adhesive backing  144 . Unlike the “para-cord loops” the handle does not move relative to the magazine, allowing for the entire range of benefits of use of the handles with a lower cost than other handle embodiments. In either the second or third embodiments, the shapes and forms of any handle structure may follow as those described in the first embodiment, though loops would be preferred for more permanent attachments as they would easily allow access to floor plates. 
     Although the present invention has been described with reference to preferred embodiments, numerous modifications and variations can be made and still the result will come within the scope of the invention. No limitation with respect to the specific embodiments disclosed herein is intended or should be inferred.

Technology Category: 2