In-line locking system for pistol conversion kits and complete handguns

Abstract

The slide of a pistol using a short recoil locking breech system is internally machined to house a barrel designed to stay in-line during the complete firing cycle. As the slide goes in battery, a mobile bolt is forced upward to lock the handgun and downward to unlock it to let slide and barrel separate after a shot is fixed.

What is claimed is: 
     
         1 . Breech locking conversion kits for pistols using the short recoil in straight line of a barrel and a mobile locking bolt which, pushed forward by the pistol slide assembly going in battery, slides in upward position on two (or one depending on the kit model) inclined ramps of a removable rod to lock the pistol breech and slides downward on said ramp to unlock the breech after a shot is fired, comprising:
 (A) a slide designed to be positioned on a pistol frame assembly for reciprocation between a forward battery position under the recoil spring pressure to a rearward loading position when the recoil of the pistol forces the slide assembly to move rearward, having on each side of its internal roof a parallel identical notch designed to house the corresponding tip of the lateral wings of a mobile locking bolt as described on paragraphs (D) and (F) when said mobile bolt moves to its upward position;   (B) a barrel installed from the muzzle end of the slide and held in position by a removable bushing, having on both lateral sides of its chamber a parallel groove wherein the mobile locking bolt wings can slide up and down and a transversal bottom groove wherein the transversal block of the mobile locking bolt enters when said locking bolt moves to its upward position;   (C) a removable locking rod which fastens on its rear end to the pistol frame by the shaft of the pistol slide stop or the axle of the slide release depending of the pistol model and which cylindrical elongated front extension doubles as a recoil spring guide, having on the same plane on top of its rear part two inclined ramps with identical angles, shapes and dimensions designed to fit precisely on the inclined front and rear surfaces of the bottom ramp of a mobile locking bolt described on paragraph (D);   (D) a mobile U shaped locking bolt with two lateral wings, one transversal internal block, one bottom ramp having the front and rear inclined surfaces designed to fit precisely inside the two top ramps of a locking rod as described on paragraph (C);   (E) a removable locking rod as described on paragraph (C) using a reversed disposition of the locking ramps by having only one inclined top ramp designed to fit precisely inside the twin bottom ramps of a mobile locking block as described on paragraph (F);   (F) a mobile U shaped locking bolt as described on paragraph (D) using a reversed disposition of the locking ramps by having two inclined bottom ramps designed to fit precisely on the front and rear surfaces of the inclined top ramp of the locking rod described on paragraph (E).   
     
     
         2 . Breech locking conversion kits according to  claim 1  having a round barrel and a removable bushing, designed to be installed without any modification on the frame assemblies of 1911 pistols the same way as the original slide assemblies; 
     
     
         3 . Breech locking conversion kits according to  claim 1  having a flat sided chamber barrel installed from the bottom of a bushingless flat sided slide, designed to be installed without any modification on the frame assemblies of 1911 pistols the same way as the original slide assemblies; 
     
     
         4 . Breech locking conversion kits according to  claim 3  designed to be installed without any modification of their frame assemblies on different pistols regardless of their operating systems and the material used in their fabrication. 
     
     
         5 . Breech locking conversion kits according to  claim 4  having a top ejecting slide with a squared front opening on which the two tips of the locking bolt wings come to bear and, in conjunction with the transversal block of the mobile locking bolt inside the bottom barrel groove, locks together barrel and slide when said mobile bolt has moved to its upward position. 
     
     
         6 . New pistols made of different materials and operating on different systems using breech locking conversion kits according to  claims 4  and  5  especially designed for their model, size and caliber.