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{ {)PEN \ S'e'ruc I 018% 1K “ US008925463B1 (12) United States Patent (10) Patent N0.: US 8,925,463 B1 Sullivan et al. (45) Date of Patent: Jan. 6, 2015 (54) PRESSURE RELIEF SYSTEM FOR GUN (56) References Cited FIRED CANNON CARTRIDGES U.S. PATENT DOCUMENTS (75) Inventors: Kevin Michael Sullivan, Kennebunk, 3,927,791 A 12/1975 Hershberger ME (Us); Marcelo Edgardo Martlllel, 4,892,038 A * 1/1990 Lubbers ...................... .. 102/439 Cordoba (AR); Nicolas Horacio Bruno, 5,044,154 A * 9/1991 English _et al. ................ .. 60/223 Cordoba (AR); Brian Desmarais, 5,155,295 A 10/1992 camPOh Kennebunk ME (Us) 5,311,820 A 5/1994 Ellingsen ’ (Continued) (73) Assignee: KMS Consulting, LLC, Kennebunk, ME (Us) FOREIGN PATENT DOCUMENTS . WO 2011071576 Al 6/2011 ( * ) Notice.. Subject to any disclaimer, the term of th1s OTHER PUBLICATIONS patent is extended or adjusted under 35 U.S.C. 154(b) by 167 days. Kohnken, KH. Ceramic Gun Barrels, Advanced Materials & Pro cesses; Sep. 2002, pp. 01-02. (21) Appl. No.: 13/597,640 _ (Cont1nued) (22) Filed? Aug- 29: 2012 Primary Examiner * Bret Hayes Assistant Examiner * Derrick Morgan _ _ (74) Attorney, Agent, or Firm * Karl F. Milde, Jr.; Eckert Related U-s- APPllcatlon Data Seamans Cherin & Mellott, LLC (63) Continuation-in-part of application No. 12/875,402, (57) ABSTRACT ?led on sep' 3’ 2010’ HOW Pat NO' 8,573,121 A high velocity munition comprises a projectile, mounted on (60) Provisional application No. 61/653,600, ?led on May a cartridge ca§e’ that can be ?red from an woman? cannon or 31s 2012, provisional application No_ 61/239,464’ vveapon. During storage or transport an IM venting deV1ce ?led on Sep 3 2009 1ncluded 1n the cartndge case prevents the propellant charge from ?ring the projectile, leaving the cartridge damaged, but ( 51 ) Int CL intact u P on P remature i gn ition. The lM vent exhaust channel F41A 17/16 (200601) is ?lled With a solid fusible material that melts at a lower F4 23 15/36 (200601) temperature than the ignition temperatures of the igniter (or (52) us CL primer) and the propellant charge of the projectile. At least USPC .......... .. 102/439; 102/430; 102/469; 102/481 one non-fusile rqureable member is included in the 1M (58) Field of Classi?cation Search vent channel and positioned to provide structural integrity to CPC F42B 33/04, F42B 39/00, F4213 39/1 4, the fusible material in the channel.Altematively or in addition """" u ’ ’ F42B 39/26 to the fusible material, a shape memory alloy ring surrounds USPC 102/430 439 4 69 470 481 202 1 the igniter (or primer) and separates from the cartridge When """""" u ’ ’ ’ ’ {02/ the cartridge reaches a temperature that causes auto-ignition. See application ?le for complete search history. 10 Claims, 14 Drawing Sheets , p 121.0 SL- $111! 81118 CASE , W » -’ SHAPE 1115151110??? ALLOY ’ { {)PEN \ S'E'RUC i 018% 1K “" CGMPOSHEWHS ,_\,_._._1 _ warmer. \ \M PRWiEP. i 0101’): \ Z ” \~~1,=01" . \‘OPEN Six/1A 81110 4“ A 0.481: WTER‘ fbt EXHAUST AREA: 20% TOTAL AREA US 8,925,463 B1 Page 2 (56) References Cited 2004/0107860 A1* 6/2004 Loubser ...................... .. 102/481 2005/0115443 A1* 6/2005 Rastegar et al. 102/400 US PATENT DOCUMENTS 2005/0199055 A1* 9/2005 Browne ..... .. 73/17012 2007/0151473 A1* 7/2007 Brunn ......................... .. 102/444 5,398,498 A * 3/1995 MOI-t et al‘ ““““““““““ H 60/223 2008/0006170 A1 1/2008 Haeselich 5,621,183 A * 4/1997 Bailey ““ n 102/202‘7 2010/0089272 A1* 4/2010 COOk et a1. .................. .. 102/481 5,735,114 A >1< 4/1998 Ellingsen “““““““““““ n 60/391 2010/0126887 A1* 5/2010 Kaddour et al. 206/216 5,936,189 A 8/1999 Lubbers 2011/0192312 A1* 8/2011 Toreheim et al. 102/469 6,321,656 131* 11/2001 Johnson “““““““““““ n 102/377 2012/0298005 A1* 11/2012 Kotefski et al. 102/481 6 679 177 B1 >1< 1/2004 Wu et al‘ n ' 102/377 2013/0320010 A1* 12/2013 Kotefski et al. 220/89.1 637523085 132* 6/2004 Roach n , 102/481 2014/0061515 A1* 3/2014 Traxleretal. ................. .. 251/11 7,051,511 B2* 5/2006 PrytZ ............................. .. 60/223 7,107,909 B2 9/2006 Haeselich OTHER PUBLICATIONS 7’472’653 Bl * 1/2009 Hays et al' """"""""" " 102/481 “IM Solutions for Projectiles Crimped to Cartridges for Artillery $823351 """"""""" " ApplicationiPhase II, Transition from Cartridge Case Venting to 8’408’136 131* 40013 Lee ' """"""" " 102/377 Insensitive Propellant” by Carl J. Campagnuolo, Christine M. 835503004 B1 * 10/2013 W00 et al‘ ““““““““““ H 102/430 MiChieIlZi, Edward G. Tersine, Christine D. KHOH, William J. 8,584,588 B2 * 11/2013 Larousse et al, ,,,,,,,,,,,, ,, 102/481 AndrewsiNDIA IM/EM Symposium, May 11-14, 2009. 8,616,131 B2 * 12/2013 Kaddour et al. 102/481 2003/0205161 A1* 11/2003 Roach ......................... .. 102/481 * cited by examiner US. Patent Jan. 6, 2015 Sheet 1 0f 14 US 8,925,463 B1 GRAPH w ??mm Shamher Pres-sum vs. Time TAQLE w Reiative Ghamher Wessum {Mpa} £33; Ammn 3; Weapan US. Patent Jan. 6, 2015 Sheet 2 0f 14 US 8,925,463 B1 {MW US. Patent Jan. 6, 2015 Sheet 3 0f 14 US 8,925,463 B1 US. Patent Jan. 6, 2015 Sheet 5 0f 14 US 8,925,463 B1 Withmzt waiting maieria? 8% ring camarassm, eieas-ad laymen? HG. 8 US. Patent Jan. 6, 2015 Sheet 6 0f 14 US 8,925,463 B1 maam wmé; “61% ms WW Rm mam FIG. 11% US. Patent Jan. 6, 2015 Sheet 7 0f 14 US 8,925,463 B1 Qimae ajfmlem HG, 1’3 FEG. QR US. Patent Jan.6,2015 Sheet80f14 US 8,925,463 B1 Qgawm$me gm (53 A u.“ EvWEEQ22@_?@....... iiiilrlricixtaailcialstps... wwmmgémwzm‘azég. Egg?.. “gamma_ 1) Q E;5% mmmgaxwz" “m???stKNEW“?gin“gag,» wwg?é 2 255%Egg?Mw? uwGmWW?g gamsggng3%“,(aiii g). 5%Zwéw9%.a" fail-.1:{xiii‘iiaialiiixiisaiiaisulixiile)pnIInKBSii ...:lilgll:1..ggiiiiiiiiii>liacistzgilkvlallhl?wva! US. Patent Jan. 6, 2015 Sheet100fl4 US 8,925,463 B1 gm“),mémwizm 2...; //“a5%“;Kim.mqu 53%mg“a EmaEgg?% gm9%?a, 35%00mg0%Q @5ng?HHHHHu,,,,,,.., Qow:9,,QmmzomgmmgvgjE5 5%,“mmx08$3mmgmgwa»wmmmwnwxw5&5WES U2.a; US. Patent Jan. 6, 2015 Sheet 11 0114 US 8,925,463 B1 US. Patent Jan. 6, 2015 Sheet 12 0f 14 US 8,925,463 B1 mag SW RENE , §HAPE MEMQRY may; HG. ‘EESA EXHAUST AREA: Z'U‘E’é) WW, AREA FIG. 15% U.S. Patent Jan. 6, 2015 Sheet 13 0f 14 US 8,925,463 B1 - US. Patent Jan. 6, 2015 Sheet 14 0f 14 US 8,925,463 B1 US 8,925,463 B1 1 2 PRESSURE RELIEF SYSTEM FOR GUN applied to a variety of munitions, be they ordnance, rockets or FIRED CANNON CARTRIDGES missiles. These solutions include concepts of melting plugs alone or in combination with burst disks, memory alloy fas CROSS-REFERENCE TO RELATED teners or rings, as well as detonating cords and active venting APPLICATIONS devices using shaped charges, etc. Many applications of the concepts described have been developed on munitions rang This application is a continuation-in-part of the US. patent ing from grenade cartridge cases, rocket motor cases and application Ser. No. 12/875,402, ?led Sep. 3, 2010, and artillery projectile bodies, to fuses and warheads. However, entitled “Pressure Relief System For Gun Fired Cannon Car few such concepts have been applied to gun-?red munitions tridges.” This application also claims priority from US. Pro and even fewer relate to technology that disables ammunition visional Application Ser. No. 61/239,464, ?led Sep. 3, 2009, propulsion systems in response to IM stimuli. entitled “Pressure Relief System For Gun Fired Cannon Car 1.1 Prior Art: tridges;” the aforementioned US. patent application Ser. No. The prior art in this ?eld of Insensitive Munitions includes 12/875,402, ?led Sep. 3, 2010, entitled “Pressure Relief Sys a number of articles and patents that are relevant to the present tem For Gun Fired Cannon Cartridges” and US. Provisional invention. Typical of such prior art is the US. Pat. No. 5,936, Application Ser. No. 61/653,600, ?led May 31, 2012, entitled 189 to Lubbers and an article “IM Solutions for Projectiles “Pressure Relief System For Gun Fired Cannon Cartridges,” Crimped to Cartridges for Artillery ApplicationiPhase II, all of which applications are incorporated herein by refer Transition from Cartridge Case Venting to Insensitive Prope ence. liant” by Carl J. Campagnuolo, Christine M. Michienza, 20 Edward G. Tersine, Christine D. Knott, William J . Andrewsi BACKGROUND OF THE INVENTION NDIA IM/EM Symposium, May 11-14, 2009. The Lubbers US. Pat. No. 5,936,189 discloses a cartridge The present invention relates to high velocity automatic munition used with rapid-?re weapons of medium caliber cannon and weapon munitions having a pressure relief sys (about 40 mm). Many such cartridges are received into a belt tem. 25 that is fed to the rapid-?re weapon. The propulsion chamber 1.0 Introduction: in some cartridge case types are divided into a high-pressure The term “Insensitive Munitions” refers to a generic body chamber (into which the propulsive charge is placed) and a of munitions knowledge that includes guidance practices, low-pressure chamber that is connected with the high-pres regulations, technology, methodologies and standards for sure chamber via exhaust apertures. The cartridge case and complying with the following objective: 30 projectile are mechanically connected via a central threaded “To ensure, to the extent practicable, that munitions under connection that includes an intended break point.
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