Patent ID: 6779343
Filing Date: 2004-08-24
Classification: B21J,B23Q,B25B,F15B

Abstract:
A pressure intensifier for supplying force, the pressure intensifier comprising:a housing; first, second and third pistons slidably positioned in said housing, said first and second pistons being drivingly coupled to a rod; wherein said third piston includes a first portion extending through said housing and a second portion in contact with a substantially incompressible fluid, wherein said substantially incompressible fluid is selectively confined within a cavity, wherein said rod includes a first end selectively moveable within said cavity and wherein said first and second pistons are drivable in a first direction by pressurized fluid to further insert said rod within said cavity and produce an amplified output force at said first portion of said third piston, wherein said first piston is drivable in a second direction opposite said first direction by pressurized fluid to retract said third piston.