Patent ID: 6253470
Filing Date: 2001-07-03
Classification: E01H

Abstract:
A hydraulic system for selectively moving the first and second wings of a V-plow snowplow blade, said system comprising:a first double acting angle hydraulic actuator in engagement with the first wing for selectively moving the first wing, said first actuator having a base side and a rod side;a second double acting angle hydraulic actuator in engagement with the second wing for selectively moving the second wing, said second actuator having a base side and a rod side;a pump;a hydraulic fluid reservoir in communication with said pump;a first valve having a first position such that said reservoir through said pump is in fluid communication with said rod side of said first angle actuator and a second position such that said reservoir through said pump is in fluid communication with said base side of said first angle actuator;a second wing valve having a first position such that said reservoir through said pump is in fluid communication with said rod side of said second angle actuator and a second position such that said reservoir through said pump is in fluid communication with said base side of said second actuator; anda third valve having a second position such that said base sides of said first and second angle actuators are in fluid communication and a first position such that said base side of said first and second angle actuators are obstructed from fluid communication.