Patent ID: 6698113
Filing Date: 2004-03-02
Classification: E01H

Abstract:
A plow comprising:a. a plow moldboard; b. a decelerating fluid actuator driving the plow moldboard, the decelerating fluid actuator including: (1) a piston; (2) an actuator arm connected to the piston; (3) a cylinder wherein the piston travels, and from which the actuator arm is extended and retracted during such travel, the cylinder having first and second ports which are successively blocked as the piston travels within the cylinder to retract the actuator arm, the second port being blocked after the first; (4) an enclosure situated outside the cylinder, the enclosure having an enclosure interior and an enclosure exterior, wherein the enclosure interior defines a passage between the ports; (5) a restrictor within the enclosure between the first and second ports, the restrictor being accessible from the enclosure exterior without removal of the enclosure.