Excavator and a machine for material transfer

Abstract

The invention relates to an excavator or to a machine for material transfer comprising an element movable via at least one hydraulic cylinder. In accordance with the invention, one or more hydraulic cylinders are additionally hinged to the element, with the additional hydraulic cylinder(s) being connected to one or more hydraulic accumulators.

1 - 6 . (canceled) 
   
   
       7 . An excavator or a machine for material transfer, comprising
 an element coupled to a member to be movable with respect to the member,   three hydraulic cylinders,   with two of said three hydraulic cylinders coupled to the element and member and connected together through a main hydraulic circuit to move the element with respect to the member,   said third hydraulic cylinder additionally hinged to the element and member independent from the main hydraulic circuit, and   one or more hydraulic accumulators connected to said third hydraulic cylinder.   
   
   
       8 . An excavator or machine for material transfer in accordance with  claim 7 , wherein all said cylinders are arranged to pivot the element with respect to the member. 
   
   
       9 . An excavator or machine for material transfer in accordance with  claim 8 , wherein said third hydraulic cylinder additionally hinged to the element and member is situated between said two other hydraulic cylinders. 
   
   
       10 . An excavator or machine for material transfer in accordance with  claim 7 , wherein said third hydraulic cylinder additionally hinged to the element and member is situated between said two other hydraulic cylinders. 
   
   
       11 . An excavator or a machine for material transfer in accordance with claim  1 , wherein the element is a boom or shaft of the excavator or a machine for material transfer.