Importance

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Abstract

A hydraulic system is disclosed that utilizes a switching block to selectively allow pressurized fluid to be stolen from a master or lift cylinder and directed to a single acting cylinder to perform a function, such as securing an implement to a vehicle. The system utilizes the highly pressurized hydraulic fluid from an extended lift cylinder to maintain a secondary cylinder in an extended position. To withdraw the secondary cylinder, a one-way valve directs fluid to the opposite chamber of the secondary cylinder. The secondary cylinder, however will only retract if the master cylinder is retracted and not under pressure, thus providing a significant safety benefit in certain applications. This system provides many cost efficiencies and may be utilized by work vehicles to perform secondary functions such as attaching and removing an implement from a vehicle such as, for example, a loader from a tractor.

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First Claim