Intensifier

A pressure intensifier comprising:

• an elongated housing having first and second ends interconneced by a differential diameter bore extending therethrough, said bore having a first large size open receiver end adjacent said first end extending a substantial portion inwardly therefrom toward said second end along the axis of said bore including a first inner end wall therein, a second small size bore portion adjacent said second end extending inwardly therefrom toward said first end along the axis of said bore, a coaxial third intermediate size bore portion interconnecting the innermost ends of said first and second bores extending inwardly from said first end wall toward said second bore including a second inner wall adjacent said second bore,
• an end cap permanently secured in said open receiver end including a fluid port therein,
• said first open receiver end having a diameter larger than the diameter of said second and third bores serving as an actuating end of said intensifier, said third intermediate size bore having a diameter larger than said second small size bore but smaller then the diameter of said first open receiver end serving as a pressure intensification chamber, said second small bore having a diameter smaller than the remaining bore portions serving as a feeding end of intensifier with said small opening permitting fluid supply thereto, said housing further including a side port entering housing wall adjacent said second inner wall perpendicularly for fluid exhaust from said third size bore portion during the pressure intensification therein,
• a pressure intensification means for elevating pressures of the fluid entering said third size bore portion via said fluid supply opening and exiting at higher pressures via said fluid exhaust side port, said pressure intensification means movable from a first position wherein said small fluid supply opening is closed to a second position wherein said fluid supply opening is wide open, means for generating an airless evacuated annulus therein with substantial vauum force in at least one of said positions, means for shifting said pressure intensification means to move from one of said positions by the pressurized fluid force coupled with said vacuum force means efficiently and with energy conservation to another of said positions, means for maintaining said pressure intensification means in one of said positions including valving means for porting fluid to fluid operable means,
• said pressure intensification means further including an elongated axially slidable piston having differential diameters of corresponding close sliding fit with said differential diameter housing bore portions, with a first large diameter short portion of said piston at one end serving as an actuating end of said intensifier, a second small diameter elongated portion of said piston at the opposite end serving as a plugging piston end for fluid supply opening and a third intermediate diameter elongated portion interconnecting the innermost ends of said first and second portions of said piston serving as a pressure booster when shuttled inside said housing borre from the first small piston engaged position with said fluid supply opening closed to the second small piston disengaged position allowing fluid supply to said pressure intensification chamber when said valving means initiate said fluid operable means for porting the pressurized fluid in said actuating end of said intensifier selectively allowing fluid flow to one of said housing bore ends thereby shifting said piston between said first and second positions wherein when said valving means permit pressurization of said piston actuating end, said fluid operable means will shift said piston by fluid action over said large diameter piston end to said first small piston engaged position, and wherein said valving means permit depressurization of said piston actuating end by allowing escape of the pressurized fluid out of said actuating housing end, said fluid operable means will shift said piston by fluid action ove said small diameter piston end to said second small piston disengaged position while simultaneously generating said evacuated annulus formed between said third portion of said piston and said first large size bore portion when said piston is in said second small piston disengaged position, the return of said piston to said first small piston engaged position by fluid action over said large diameter piston end accompanied by the vacuum force in said evacuated annulus substantially aiding in the operation of said intensifier when fluid trapped inside said intensification chamber is subjected to the force said pressure booster exerts over said fluid, said force being proportional to the diametral differences of said first large actuating and said third intermediate diameters of said piston and capable of having pressure elevation inside said intensification chamber forcing fluid to exit via said side port therefrom at substantial pressure boost induced thereto by the same pressurized fluid action over said piston surfaces entailing mechanical advantage therein.