Abstract: A concrete pulverizer adapted for mounting on an arm of an excavator including a lower jaw having a first pivot pin mechanism and a crushing surface. The crushing surface on this jaw is formed with concrete waste apertures. An upper jaw has a rear end section connectible to an end of the arm and has crushing teeth mounted on a lower side. This jaw is pivotably connected to the lower jaw by the pivot pin mechanism. The upper jaw is pivotably connected to a hydraulic cylinder actuator on the arm and can be pivoted between an upper position and a crushing closed position. There is a power mechanism for pivoting the lower jaw between a horizontal scooping position and a dumping position and this mechanism can hold the lower jaw in a crushing position while the upper jaw is being pivoted by the hydraulic cylinder actuator.

Abstract: A concrete pulverizer adapted for mounting on an arm of an excavator including a lower jaw having a first pivot pin mechanism and a crushing surface. The crushing surface on this jaw is formed with concrete waste apertures. An upper jaw has a rear end section connectible to an end of the arm and has crushing teeth mounted on a lower side. This jaw is pivotably connected to the lower jaw by the pivot pin mechanism. The upper jaw is pivotably connected to a hydraulic cylinder actuator on the arm and can be pivoted between an upper position and a crushing closed position. There is a power mechanism for pivoting the lower jaw between a horizontal scooping position and a dumping position and this mechanism can hold the lower jaw in a crushing position while the upper jaw is being pivoted by the hydraulic cylinder actuator.

Abstract: A coupler device for releasably connecting a boom arm to a tool such as a bucket including a coupling frame adapted for connection to the boom and having wedge members on opposite sides thereof, these members being provided to engage in channels formed by connecting members on the tool. A fluid actuated holding mechanism is provided to secure the wedge members in the channels, this mechanism including a holder pivotably mounted on the frame and a fluid actuator connected to the holder at one end and to the frame at an opposite end. The coupler device includes a locking pin mechanism for locking the wedge members in the channels, this mechanism including at least one locking pin movably mounted in the frame for movement between a locked position and an unlocked position and, optionally, a linear fluid actuator mounted on the frame and having a hydraulic cylinder.

Abstract: A quick coupling device for releasably connecting a boom arm to a tool, such as a material handling bucket, including a coupling frame adapted for connection to the boom and having wedge members provided on opposite, vertically extending sides thereof and projecting outwardly in a transverse direction from these sides. The wedge members engage in wedge-shaped channels formed by rigid connecting rails mounted on the top of the bucket. A hydraulic locking mechanism for securing the wedge members in the wedge-shaped channels is mounted at one end of the coupling frame and includes a hydraulic actuator and preferably two locking bars movable by this actuator between a locked position and an unlocked position. During use of this coupling device, in the locking position the two locking bars extend into cooperating openings provided on the connecting rails and thereby prevent the coupling device from detaching from the bucket.