Patent ID: 7455494
Filing Date: 2008-11-25
Classification: E02F

Abstract:
1. A control circuit for an attachment mounting device, the attachment mounting device having a closed position for securing an implement to the attachment mounting device and an opened position for releasing the implement from the attachment mounting device, the control circuit comprising: at least one hydraulic actuator configured to actuate the attachment mounting device into the closed position and into the opened position; a control valve having at least a first energized position and a second energized position, wherein the first energized position applies pressurized fluid to the at least one hydraulic actuator to actuate the attachment mounting device into the closed position and wherein the second energized position applies pressurized fluid to the at least one hydraulic actuator to actuate the attachment mounting device into the opened position; and a continuous pressure valve configured into a first position to keep the at least one hydraulic actuator actuating the attachment mounting device in the closed position when the control valve was last operated into-the first energized position and configured into a second position to keep the at least one hydraulic actuator actuating the attachment mounting device in the opened position when the control valve was last operated into the second energized position.