US 20100077643A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2010/0077643 A1 KERBRAT et al. (43) Pub. Date: Apr. 1, 2010 (54) FIREARM WITH ENHANCED RECOIL AND (30) Foreign Application Priority Data CONTROL CHARACTERISTICS Jun. 7, 2002 (CH) ....................................... O975/02 (76) Inventors: Renaud KERBRAT, Gland (CH): Jul. 31, 2002 (CH) ....................................... 1343/O2 Timothy Lindsay, Woodstock, MD Apr. 15, 2003 (CH) ....................................... O679/03 (US) Publication Classification Correspondence Address: (51) Int. Cl WILEY REN LLP F4A 25/00 (2006.01) WSRISE. Soons (us F4A 3/50 (2006.01) 9 (US) F4I435/00 (2006.01) (21) Appl. No.: 12/501,247 (52) U.S. Cl. ......................................................... 42/1.06 (22) Filed: Jul. 10, 2009 (57) ABSTRACT O O The invention comprises improved designs in a recoil control Related U.S. Application Data device comprising a bolt and slider for use in a variety of (63) Continuation of application No. PCT/US08/00336, firearms. In one embodiment, the bolt and slider are articu filed on Jan. 10, 2008, Continuation-in-part of appli- lated so that the displacement of the bolt results in a force cation No. 11/783,380, filed on Apr. 9, 2007, which is component accompanying the slideras it moves along a slider a continuation of application No. 10/454,780, filed on path that traverses a line formed by a linear firing axis of the Jun. 5, 2003, now Pat. No. 7,201,094. barrel of the firearm. The slider can have additional structural and functional features, including stabilizing features, vibra (60) Provisional application No. 60/879,530, filed on Jan. tional damping elements, elements of the fire control mecha 10, 2007, provisional application No. 60/459,969, nism, and devices to manage the peak impulse of the slider filed on Apr. 4, 2003. movement as it contacts a base or terminus point. 206 Patent Application Publication Apr. 1, 2010 Sheet 1 of 30 US 2010/0077643 A1 F.G. 1 Patent Application Publication Apr. 1, 2010 Sheet 2 of 30 609Z09909 Patent Application Publication Apr. 1, 2010 Sheet 3 of 30 US 2010/0077643 A1 390Z Z01 Patent Application Publication Apr. 1, 2010 Sheet 4 of 30 US 2010/0077643 A1 €1,9y$9909 Z01 Patent Application Publication Apr. 1, 2010 Sheet 5 of 30 US 2010/0077643 A1 8 Patent Application Publication Apr. 1, 2010 Sheet 6 of 30 US 2010/0077643 A1 s s s 8 S s s S Patent Application Publication Apr. 1, 2010 Sheet 7 of 30 US 2010/0077643 A1 wn o N g Patent Application Publication Apr. 1, 2010 Sheet 8 of 30 US 2010/0077643 A1 103 108 P103 P102 Patent Application Publication Apr. 1, 2010 Sheet 9 of 30 US 2010/0077643 A1 Patent Application Publication Apr. 1, 2010 Sheet 10 of 30 US 2010/0077643 A1 G. 1 4. N-y & / \ / f Patent Application Publication Apr. 1, 2010 Sheet 12 of 30 US 2010/0077643 A1 Patent Application Publication Apr. 1, 2010 Sheet 13 of 30 US 2010/0077643 A1 Patent Application Publication Apr. 1, 2010 Sheet 14 of 30 US 2010/0077643 A1 3 32 14/30 33 141 28 3O t é f 2O8. r - ^ Y. k --------- <s : X CNYSS too 103 208 2 / 115 F.G. 21 1 O2 106 F.G. 22 Patent Application Publication Apr. 1, 2010 Sheet 15 of 30 US 2010/0077643 A1 103 Patent Application Publication Apr. 1, 2010 Sheet 16 of 30 US 2010/0077643 A1 F.G. 26 Patent Application Publication Apr. 1, 2010 Sheet 17 of 30 US 2010/0077643 A1 Patent Application Publication Apr. 1, 2010 Sheet 18 of 30 US 2010/0077643 A1 FG 30 FIG. 31 Patent Application Publication Apr. 1, 2010 Sheet 19 of 30 US 2010/0077643 A1 F.G. 32 Patent Application Publication Apr. 1, 2010 Sheet 20 of 30 US 2010/0077643 A1 618 606 609 FG. 33 Patent Application Publication Apr. 1, 2010 Sheet 21 of 30 US 2010/0077643 A1 624 625 FIG. 34 Patent Application Publication Apr. 1, 2010 Sheet 22 of 30 US 2010/0077643 A1 605 633 SY- 630 FIG. 35A 632 605 FIG. 35C Patent Application Publication Apr. 1, 2010 Sheet 23 of 30 US 2010/0077643 A1 605 605 sus S 9 FIG. 36A FIG. 36B FIG. 36C FIG. 36D Patent Application Publication Apr. 1, 2010 Sheet 24 of 30 US 2010/0077643 A1 FIG. 37A FG, 37B Patent Application Publication Apr. 1, 2010 Sheet 25 of 30 US 2010/0077643 A1 NR 660 650 FIG 38 651 Patent Application Publication Apr. 1, 2010 Sheet 26 of 30 US 2010/0077643 A1 35 30 - -- 1 mmM - 2 25 - - - 3 W ----------------------------------------------- -- 4 (VO 20 - -------m---------------- L 1. 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This application is a Continuation application of the chambered round. Therefore, all systems were engineered PCT/US2008/000336, filed Jan. 10, 2008, which claims pri in order to secure an accurate locking duration for the breech ority benefit to U.S. Provisional application 60/879,530, filed to the barrel, until the gas pressure falls to a safe level once the Jan. 10, 2007. This application is also a continuation-in-part projectile has exited the barrel. The main breech locking of pending U.S. application Ser. No. 1 1/783.380, filed Apr. 9. systems developed employed separate revolving chambers, 2007, which is a continuation of Ser. No. 10/454,780, filed the rotation of which provides an adequate duration of pro Jun. 5, 2003 (now U.S. Pat. No. 7,201,094). This application tection, or toggle systems, rotating bolts, tilting breech is also a continuation-in-part of pending U.S. application Ser. blocks, lug systems, or even non-ramming breech blocks. A No. 10/454,778, filed Jun. 5, 2003. Each of 10/454,778 and common but unsatisfactory feature among all these mecha 10/454,780 claim priority benefit to U.S. Provisional Appli nisms is that they do not prevent the undesirable side effects cation No. 60/459,969, filed Apr. 4, 2003, and priority benefit during automatic firing, which accounts for the adverse of Swiss Application No. 0975/02, filed Jun. 7, 2002, Swiss effects on accuracy and ease of use. Application No. 1343/02, filed Jul. 31, 2002, and Swiss Application No. 0679/03, filed Apr. 15, 2003. Each of the 0005 Thus, the mechanisms found on current firearms, above-listed prior applications are specifically incorporated although reliable and widely employed, nevertheless suffer herein by reference in their entirety. from a number of deficiencies. For example, some mecha nisms increase the length of the housing of the breech, result FIELD OF INVENTION ing in interior clutter and increased weight. The amplitude of recoil is relatively critical due to its effect on accuracy, and the 0002 This invention relates to small and heavy caliber existing mechanisms fail to provide a satisfactory or optimum firearms and machine firearms as well as to improved meth reduction in recoil, which permits the resulting upward move ods and devices for reducing the consequences of recoil and improving performance of firearms. In a particular embodi ment of the barrel muzzle climb or muzzle rise. More par ment, the device relates to the control or management of the ticularly, the direction of the recoil forces generally coincides recoil forces for Small caliber semiautomatic or automatic with the longitudinal axis of the gun barrel. The gun barrel is firearms. generally located above the shoulder in a person firing a rifle or above the hand in a handgun, and more precisely above the BACKGROUND FOR AND INTRODUCTION TO gap between the thumb and index finger of a person firing a THE INVENTION handgun. This configuration generates a moment that causes the upward jerking of the gun familiar to every user. Heavy 0003. Historically, automatic weapons were intended to caliber firearms and cannons experience the same upward be loaded mechanically and, therefore, fired much faster than forces upon firing. For these and other reasons, improvements hand-loaded firearms. However, the rapid firing of successive in the design and operation of Small and heavy caliber fire cartridges induces various side effects that proved detrimen arms and cannons are desired in the art. tal both to accuracy and the effectiveness of an automatic weapon. Traditionally, a gun was considered to work like a 0006. The innovative approaches taken here make a more heat engine, in which about thirty percent of the energy devel effective use of the available energy and, in particular, oped by the propellant powder is dissipated as heat, forty recycle, as much as practicable, the wasted energy by depart percent as muzzle blast and recoil, and only the remaining ing from the traditional and historical mechanisms.