Patent ID: 6499904
Filing Date: 2002-12-31
Classification: E02F,Y10T

Abstract:
A coupler device for releasably connecting a boom arm to a tool, such as a material handling bucket, said coupling device comprising:a coupling frame adapted for connection to said boom and having wedge members provided on opposite, vertically extending sides thereof, and projecting outwardly and in a transverse direction from said vertically extending sides, said wedge members being adapted to engage in channels formed by connecting members mounted on said tool; and a fluid actuated locking mechanism for securing said wedge members in said channels, said locking mechanism being mounted on said coupling frame and including a fluid actuator, at least one locking bar movable by said fluid actuator between a locking position and an unlocked position, and a track for guiding movement of said at least one locking bar which is slidable along said track between said locking position and said unlocked position, wherein said track is rigidly connected to said coupling frame, and during use of said coupling device, in said locking position said at least one locking bar extends into a cooperating opening provided on said tool and thereby prevents said coupling device from detaching from said tool.