Hydraulic lift

Abstract

A hydraulic jack comprising a base (1) into which a working cylinder having a piston is screwed, the working cylinder being surrounded by an element forming a hydraulic fluid reservoir with the base (1) and a cover. A cylinder (7) and a cylinder with a diameter at least twice smaller than the first cylinder are screwed into the base, both having pistons (8) fitted to them, forming pumps for forcing hydraulic fluid into the working cylinder via a system of hydraulic lines (11, 13) with check valves (12) located in the base (1), enabling the hydraulic fluid to be pumped via a piston (8) operating in the cylinder of a larger pump (7), allowing the piston of the working cylinder to be lifted, and the hydraulic fluid to be pumped via a piston (10) operating in the cylinder of a smaller pump, allowing the piston of the working cylinder to be lifted.