Patent ID: 8684141
Filing Date: 2014-04-01
Classification: B66F,F15B

Abstract:
1. A device for lifting objects, comprising: a base including a surface having at least a first opening and a second opening, the base also including a chamber therein for providing fluid communication between the first and second openings; a first tubular body having a first end arranged on the base, the tubular body extending from the base in a longitudinal direction; a second tubular body, the second tubular body being mobile in relation to the first tubular body in said longitudinal direction; a first receiving chamber in an interior of the first tubular body, the first receiving chamber being configured to contain a liquid medium at a first level, the first opening being configured to provide fluid communication between the first receiving chamber and the chamber in the base; a second receiving chamber in an interior of the second tubular body; a line connection configured to provide fluid communication between the first receiving chamber and the second receiving chamber by way of the chamber in the base, the line connection extending in the longitudinal direction from the second opening of the base through at least a portion of at least one of the first receiving chamber and the second receiving chamber; a first supply line in the base, and a second supply line extending in the longitudinal direction from the base, the first supply line being configured to direct a fluid medium from a pressurized source to the second supply line, the second supply line being configured to supply the fluid medium to an upper section of the first receiving chamber above said first level of the liquid medium, the fluid medium being different from the liquid medium.