초록 ▼

A closed circuit synchronizing cylinder assembly for synchronously moving at least two external devices such that the devices move at the same rate and maintain essentially the same level within a small deviation. The synchronizing cylinder assembly has a cylinder with a movable piston and rod for e

A closed circuit synchronizing cylinder assembly for synchronously moving at least two external devices such that the devices move at the same rate and maintain essentially the same level within a small deviation. The synchronizing cylinder assembly has a cylinder with a movable piston and rod for each external device. The piston divides the interior of the cylinder into a rod outer diameter chamber, a rod inner diameter chamber and a third chamber. The rod outer diameter chamber and rod inner diameter chamber have equal areas and hydraulic fluid therein and third member is open to atmosphere. The hydraulic fluid in the rod outer diameter chamber of one cylinder communicates with the rod inner diameter chamber of another cylinder driving the reciprocal movement of the piston and rod. An equalizing vent located in each cylinder communicates between the rod outer diameter chamber and the rod inner diameter chamber to allow passage of hydraulic fluid between chambers to allow the cylinders to fully stroke and re-synchronize each cycle automatically.

대표청구항 ▼

1. A synchronizing cylinder assembly for synchronizing at least two external devices having a movable member with reciprocal movement at the same rate such that the devices stay level to each other within a small deviation the assembly comprising:a hydraulic cylinder for each external device, wherei

1. A synchronizing cylinder assembly for synchronizing at least two external devices having a movable member with reciprocal movement at the same rate such that the devices stay level to each other within a small deviation the assembly comprising:a hydraulic cylinder for each external device, wherein each hydraulic cylinder communicates with the other hydraulic cylinder in a closed circuit system, said hydraulic cylinder comprises a piston slidable within the hydraulic cylinder and a piston rod projecting from the rod end of the cylinder, said piston rod dividing the interior of the cylinder into a rod outer diameter chamber, a rod inner diameter chamber and a third chamber, wherein the rod outer diameter chamber and the rod inner diameter chamber houses hydraulic fluid and said third chamber is open to atmosphere for receiving atmospheric air, wherein each direction of the reciprocal movement, the hydraulic fluid in the rod outer diameter chamber of one of the hydraulic cylinders flows to the rod inner diameter chamber of the other hydraulic cylinder while the hydraulic fluid in the outer diameter chamber of the other hydraulic cylinder flows to the rod inner diameter chamber of the one hydraulic cylinder.