Micro-roller sliding system for guiding movable gun parts involved in projectile discharge

Abstract

The present invention relates to firearms requiring the smooth operation of slidably engaged subassemblies for effecting projectile loading, maintenance, triggering, discharge, or reloading of a projectile. The major drawback of the prior art, such as that applying to slide-action pistols, is that friction occurs unevenly and at high levels between moving parts, which leads to damaging levels of frictive heat, wear, or warping, as well as jamming. The slidable guidance system proposed herein addresses this drawback by employing micro-rollers whose surfaces do not at any one point constantly touch the slidable gun part(s) with which they come in contact. Preferably, at least a set of micro-rollers and a pair of channels are installed in the inner sides of a slide and the upper outer sides of a gun frame, or on the lower face of a slide-housed slidable barrel and the upper face of a gun frame.

What is claimed is:  
     
         1 . A sliding system for guiding slidably engaged parts of a gun, comprising: 
 a frame;    a slidable unit installed on the upper part of the frame and freely movable in an alternating longitudinal direction relative to the frame;    guide members rotatably and multiply disposed on the lower part of the slidable unit, the guide members being elastic and resilient rollers;    so that the movement of the slidable unit is smoothly and stably guided.    
     
     
         2 . The sliding system of  claim 1 , wherein guide channels in the form of parallel longitudinal recesses are made in or on the upper part of the frame such as to supportively engage the guide members, so that the movement of the slidable unit is guided smoothly and stably.  
     
     
         3 . The sliding system of  claim 1 , wherein the guide members are rotatably and multiply disposed on the upper part of the frame.  
     
     
         4 . The sliding system of  claim 1 , wherein the guide members are rotatably and multiply disposed on the upper part of the frame, and wherein guide channels in the form of parallel longitudinal recesses are made in or on the lower part of the slidable unit, so that the movement of the slidable unit is guided smoothly and stably.  
     
     
         5 . The sliding system of  claim 1 , wherein each of the guide members has a centering axis materially manifested in the form of guide posts.  
     
     
         6 . The sliding system of  claim 1 , wherein the guide members are made of a resilient and slippery polymer.  
     
     
         7 . The sliding system of  claim 1 , wherein the guide members house roller bearings made of a resilient material.  
     
     
         8 . A sliding system for guiding slidably engaged parts of an automatic pistol, comprising: 
 a frame;    a slide mounted on the frame and freely movable in an alternating longitudinal direction relative to the frame;    a barrel extending through the slide and freely movable in an alternating longitudinal direction relative to the slide;    guide members rotatably and multiply disposed on the lower part of the slide, the barrel, or both the slide and the barrel, the guide members being elastic and resilient rollers;    so that the movement of the slide or the barrel is smoothly and stably guided on the frame.    
     
     
         9 . The sliding system of  claim 8 , wherein guide channels in the form of parallel longitudinal recesses are made in or on the upper part of the frame such as to supportively engage the guide members, so that the movement of the slide or the barrel is guided smoothly and stably.  
     
     
         10 . The sliding system of  claim 8 , wherein the guide members are rotatably and multiply disposed on the upper part of the frame.  
     
     
         11 . The sliding system of  claim 8 , wherein the guide members are rotatably and multiply disposed on the upper part of the frame, and wherein guide channels in the form of parallel longitudinal recesses are made in or on the lower part of the slide and the barrel, so that the movement of the slide or the barrel is guided smoothly and stably.  
     
     
         12 . The sliding system of  claim 8 , wherein the guide members are rotatably and multiply installed on guide rails, the guide rails being arranged at parallel longitudinal positions on the lower face of the barrel or on the inner sides of the slide, so that the movement of the slide or the barrel is guided smoothly and stably.  
     
     
         13 . The sliding system of  claim 8 , wherein the guide members are rotatably and multiply installed on guide rails, the guide rails being arranged at parallel longitudinal positions on the upper face of the frame, so that the movement of the slide or the barrel is guided smoothly and stably.  
     
     
         14 . The sliding system of  claim 8 , wherein guide members are mounted on the lateral and lower surfaces of guide rails, the guide rails being arranged at parallel longitudinal positions on the lower face of the barrel or on the inner sides of the slide, so that the movement of the slide or the barrel is guided smoothly and stably.  
     
     
         15 . The sliding system of  claim 8 , wherein the guide members are fixed guide protuberances mounted on the lateral and lower surfaces of guide rails, the guide rails being arranged at parallel longitudinal positions on the lower face of the barrel or on the inner sides of the slide, so that the movement of the slide or the barrel is guided smoothly and stably.  
     
     
         16 . The sliding system of  claim 8 , wherein the guide members are directly installed on the barrel or the slide at points along a gap between the the outer surface of the barrel and the inner surface of the slide, the outer surface of the guide members touching the barrel, the slide or both the barrel and the slide, so that the interactive movement of the barrel and the slide is guided smoothly and stably.  
     
     
         17 . A sliding system for guiding slidably engaged parts of a gun, comprising 
 a slidable unit mounted on or in the upper part of the gun, the slidable unit being    cylindrical in form;    a second slidable unit partially or fully extending through the slidable unit and slidably engaged with the slidable unit in an alternating longitudinal direction relative to the slidable unit, the second slidable unit being cylindrical in form;    guide members rotatably and multiply disposed on the inner surface of the slidable unit, the guide members being micro-rollers made of a resilient and elastic material;    so that the second slidable unit and the sliding unit are guided stably and smoothly.    
     
     
         18 . The sliding system of  claim 17 , wherein the guide members are mounted on the outer surface of the second slidable unit.  
     
     
         19 . The sliding system of  claim 17 , wherein the guide members are made of a resilient and slippery polymer.  
     
     
         20 . The sliding system of  claim 17 , wherein the guide members are rotatably and multiply disposed on the upper part of the gun on a frame, and wherein the slidable unit is a bolt, so that the movement of the bolt is guided smoothly and stably.