Passive safety block

Abstract

The present invention is a firearm safety block device that increases the needed pressure on a firearm trigger required to discharge the first shot. The invention consists of a block member mounted to the firearm and extended to prevent the movement of the firing mechanism. A substantial force great enough to break or shear the blocking member is required to operate the firing mechanism as needed to cause the firearm to discharge. A spent frangible bar may be renewed. When the firearm safety block is not applicable the block member may be removed.

What is clamed is:  
     
         1 . A firearm passive safety block comprising a firearm with frame and a firing mechanism therein and a block member, said firing mechanism having a aperture formed orthogonal to the plane of said movement; 
 said block member comprised of a rod having leading or first end then a preferably frangible shank having external threaded portion under a cap on the second end, said cap having preferably unique features to torque said block member;    said frame having a threaded aperture substantially aligned to said aperture, said first end of said rod slidably received therein said internal threaded aperture in said frame to engage said aperture in said firing mechanism whereby and is by means screwed to the said internal threaded aperture in the said frame;    movement by means of said firing mechanism displaces said aperture in said firing mechanism thereby placers said block means, specifically said frangible shank, in shear and bending;    said firearm passive safety block is achieved as considerable pressure must be exerted on said firing mechanism to preferably break said frangible shank permitting said firing mechanism to be moved causing to firearm to fire.    
     
     
         2 . A firearm passive safety block comprising a firearm with frame and a firing mechanism therein, said firing mechanism having a leading side said safety block comprising a block member; 
 said block member comprised of a rod having leading or first end then a preferably frangible shank having external threaded portion under a cap on the second end, said cap having preferably unique features to torque said block member;    said frame having a threaded aperture substantially aligned to said leading side;    said first end of said block member slidably received therein said internal threaded aperture preferably proximal to the leading side of said firing mechanism then is by means screwed to the said internal threaded aperture in the said frame;    movement by means of said firing mechanism and specifically said leading edge displaces said first end thereby placers said block member, specifically said frangible shank, in shear and bending;    said firearm passive safety block is achieved as considerable pressure must be exerted on said firing mechanism to preferably break said frangible shank permitting said firing mechanism to be moved causing to firearm to fire.    
     
     
         3 . A combination firearm passive safety block, as described in  claim 1 , wherein said gun is a revolver pistol;  
     
     
         4 . A combination firearm passive safety block, as described in  claim 1 , wherein said gun is a automatic pistol;  
     
     
         5 . A combination firearm passive safety block, as described in  claim 1 , wherein said gun is a long arm;  
     
     
         6 . A combination firearm passive safety block, as described in  claim 1 , wherein said gun is a machine gun;  
     
     
         7 . A combination firearm passive safety block, as described in  claim 1 , wherein said block member is formed of metal;  
     
     
         8 . A combination firearm passive safety block, as described in  claim 1 , wherein said block member is formed of plastic;  
     
     
         9 . A firearm passive safety block comprising a firearm with frame, a firing mechanism therein and a block member, said frame having a trigger guard attached to said frame said trigger guard and said frame together circumscribing a trigger area; 
 a trigger disposed within said trigger area, said trigger in operative connection with said firing mechanism;    said block member comprised of a rod having leading or first end then a preferably frangible shank having external threaded portion under a cap on the second end, said cap having preferably unique features to torque said block member;    said trigger back surface having a protrusion with a surface orthogonal to the movement of said trigger;    said trigger guard rear having a lug protrusion having a threaded aperture by means proximal tangent said surface;    said first end of said block member slidably received therein said threaded aperture;    movement by means of said trigger and more specifically said protrusion impinges said first end of said thereby puts block member specifically said frangible shank, in shear and bending;    said firearm passive safety block is achieved as considerable pressure must be exerted on said trigger to break or bend said frangible shank thereby operating said firing mechanism causing to firearm to fire.    
     
     
         10 . A firearm passive safety block comprising a firearm with frame, a firing mechanism therein and a block member, said frame having a trigger guard attached to said frame said trigger guard and said frame together circumscribing a trigger area; 
 a trigger disposed within said trigger area, said trigger in operative connection with said firing mechanism;    said block member comprised of a rod having external threaded leading or first end then a preferably frangible shank under a cap on the second end, said cap having preferably unique features to torque said block member;    a transition plate by means retained on said trigger back surface, said plate having a threaded aperture orthogonal to movement of said trigger;    a stationary plate, parallel to transition plate, is by means retained on the rear portion of said trigger guard, said stationary plate having a aperture substantially aligned to said threaded aperture;    said trigger guard rear having a lug protrusion having a threaded aperture by means proximal tangent said surface;    said first end of said block member slidably received therein said aperture an by means screwed into said threaded aperture thereby;    movement by means of said trigger and more specifically said transition plate impinges said first end of said thereby puts block member specifically said frangible shank, in shear and bending;    said firearm passive safety block is achieved as considerable pressure must be exerted on said trigger and more specifically said transition plate to break or bend said frangible shank thereby overcoming firearm passive safety block permitting operation of said firing mechanism causing to firearm to fire.    
     
     
         11 . A firearm passive safety block comprising a firearm with frame and a firing mechanism therein having an extended trigger with a block member; 
 said block member comprised of a rod having leading or first end then a preferably frangible shank having external threaded portion under a cap on the second end, said cap having preferably unique features to torque said block member;    said trigger having a threaded aperture proximally located to said edge and orthogonal to the movement of said trigger;    said block member by means screwed to threaded aperture and said first end extending through said trigger;    by substantial pressure said trigger is pulled causing said first end to be impinged on said edge;    said firearm passive safety block is achieved as considerable pressure must be exerted on said trigger to preferably break said frangible shank permitting said firing mechanism to be moved causing to firearm to fire.