Patent ID: 7033066
Filing Date: 2006-04-25
Classification: B28C,B60P,F15B

Abstract:
1. A hydraulic actuator assembly for moving a first object relative to a second object, comprising; a first hydraulic actuator having a first cylinder with a first longitudinal axis, and a first piston slidable within the cylinder and attached to a first piston rod for movement along the first longitudinal axis with respect to the cylinder; a second hydraulic actuator having a second cylinder with a second longitudinal axis, a second piston slidable in the second cylinder and attached to a second piston rod for movement along the second longitudinal axis with respect to the second cylinder, and a non-rotation mounting located in the interior of the second cylinder between the second piston rod and the second cylinder for non-rotational movement of the second piston rod about the second longitudinal axis; and a rigid mounting between the first cylinder and the second cylinder so that the first longitudinal axis is parallel to the second longitudinal axis, and the first piston rod and the second piston rod are movable in opposite directions.