Patents Assigned to Amador Hydraulic Services Limited
  • Patent number: 4461369
    Abstract: An articulated boom and assembly comprising:(a) a lower boom arm;(b) an upper boom arm foldable over the lower boom arm and pivotal with respect to the lower boom arm;(c) hydraulic cylinders positioned between the boom arms and having piston rods extending therefrom, the hydraulic cylinders with the piston rods, pivotally secured at one end to each boom arm intermediate the boom arm's ends, one hydraulic cylinder being pivotally secured to the underside of the upper arm and the other cylinder pivotally secured to the upper side of the lower arm facing the upper side when the upper arm is folded over the lower arm;(d) a linkage for pivotally connecting the upper arm, lower arm and hydraulic cylinders, the linkage comprising three points of connection, the points when linearly connected forming a triangle with the points of connection forming the apexes of the triangle, with:(i) one apex of the triangle directed towards the hydraulic cylinders and piston rods between the upper and lower boom arms and the linkag
    Type: Grant
    Filed: March 30, 1981
    Date of Patent: July 24, 1984
    Assignee: Amador Hydraulic Services Limited
    Inventor: Joseph Amador