Fluid distribution system for pre-charged pneumatic (pcp) carbines or pistols

Abstract

The system comprises a firing mechanism ( 20 ), which comprises a trigger ( 22 ) and a main valve ( 23 ), which is connected to a barrel ( 21 ), and a first reservoir ( 1 ), wherein the fluid to be distributed to the main valve ( 23 ) is provided at a pre-determined pressure; said first reservoir ( 1 ) being arranged inside a tubular element ( 3 ), characterised in that it comprises: a second reservoir ( 2 ), arranged inside the tubular element ( 3 ), having the same pressure as the first reservoir ( 1 ), and a spacing element ( 4 ), which operates as a moving piston, arranged inside the tubular element ( 3 ), which separates the first reservoir ( 1 ) from the second reservoir ( 2 ), and in that the tubular element ( 3 ) at least partially surrounds the first reservoir ( 1 ), the spacing element ( 4 ) and the second reservoir ( 2 ).

1 . Fluid distribution system for PCP-propelled carbines or pistols with a firing mechanism ( 20 ) comprising a trigger ( 22 ) and a main valve ( 23 ), which is connected to a barrel ( 21 ); and
 a first reservoir ( 1 ) wherein the fluid to be distributed to the main valve ( 23 ) is provided at a pre-determined pressure, said first reservoir ( 1 ) being arranged inside a tubular element ( 3 ),   a second reservoir ( 2 ), arranged inside the tubular element ( 3 ) and having the same pressure as the first reservoir ( 1 ); and   a spacing element ( 4 ), which operates as a moving piston, arranged inside the tubular element ( 3 ), which separates the first reservoir ( 1 ) from the second reservoir ( 2 ),   
       characterized in that
 the spacing element ( 4 ) is a valve, 
 the tubular element ( 3 ) comprises a stop limit ( 14 ) for limiting the advance of the spacing element ( 4 ) in the direction of the second reservoir ( 2 ), and further, 
 the tubular element ( 3 ) that at least partially surrounds the first reservoir ( 1 ), the spacing element ( 4 ) and the second reservoir ( 2 ), which, in an active position after the shot is fired, when the fluid pressure of the first reservoir ( 1 ) drops, the fluid of the second reservoir ( 2 ) pushes the spacing element ( 4 ) in the direction of the first reservoir ( 1 ) until the fluid pressure of the first reservoir ( 1 ) and the fluid pressure of the second reservoir ( 2 ) are balanced; and 
 which, when in a loading position, once the fluid has been supplied to the first reservoir at a pre-determined pressure ( 1 ), said fluid of the first reservoir ( 1 ) pushes the spacing element ( 4 ) in the direction of the second reservoir ( 2 ) until the fluid pressures of the first reservoir ( 1 ) and of the second reservoir ( 2 ) are compensated; and further 
 the volume of the first reservoir ( 1 ) is equal to the volume of the barrel ( 21 ). 
 
     
     
         2 . The system according to  claim 1  characterised in that the spacing element ( 4 ) comprises retaining means ( 5 ) for retaining the tubular element ( 3 ). 
     
     
         3 . (canceled) 
     
     
         4 . (canceled) 
     
     
         5 . The system according to  claim 1 , characterised in that the spacing element ( 4 ) comprises a main body ( 9 ), having a pin ( 10 ), which blocks the inlet ( 8 ), and a rod ( 11 ) in the direction of the outlet ( 7 ), where a spring ( 12 ) is provided that rests in the outlet ( 7 ) and which separates said outlet ( 7 ) from the rod ( 11 ). 
     
     
         6 . The system according to  claim 3 , characterised in that the outlet ( 7 ) comprises a set screw ( 13 ) which brings the outlet ( 7 ) near or pushes the outlet ( 7 ) away from the free end of the rod ( 11 ), the spring ( 12 ) that is arranged in the rod ( 11 ) resting on said end screw ( 13 ). 
     
     
         7 . The system according to  claim 4  characterised in that the rod ( 11 ) comprises at its free end a transversal groove ( 6 ) facing the inlet ( 7 ). 
     
     
         8 . The system according to claim  15 , characterised in that the pin ( 10 ) is surrounded by a joint ( 16 ), which joint ( 16 ), when in a rest position, is located next to the inlet ( 8 ) and blocks said inlet ( 8 ). 
     
     
         9 . (canceled)