Abstract: In order to quickly and easily provide a coupling of a drive fluid to a hydraulic cylinder of an accessory of an excavator, a part articulately connected with a dipper arm and a dipper ladle link of the excavator is also provided with one or more hydraulic couplings of a female type. The accessory to be coupled to the part is provided with the corresponding hydraulic couplings of a male type, so that on connection to the part the accessory after fixing, rotating and locking is also connected to a drive fluid. The hydraulic couplings are kept together by the accessory having been connected to the Joint means of the excavator. When the accessory is disconnected and removed, the hydraulic connections will also be interrupted.

Abstract: A backhoe-loader with a undercarriage resting on wheels and comprising at its front end a loader structure with a loader arm and a loading bucket and at the other end a superstructure revolving 360.degree. , a driver cab is mounted to one side of the superstructure and on the other side next to the driver cab there are provided power units and a mounting pad pivotable about a vertical shaft for the horizontal pivot shaft of an excavator boom. The boom is positionable in a raised state with the dipper arm collapsed and the implement in a forward-pointing rest position above the undercarriage and outside the field of view of the driver cab. A front mudguard is present in front of the mounting pad and functions as a rest for the implement, the loader structure is mounted asymmetrically relatively to the longitudinal center axis of the undercarriage on the cab side of the undercarriage, and the rest for the implement on the front mudguard is widened toward the middle of the undercarriage.

Abstract: A scoop for a mobile implement such as an excavator or an excavator-like device is made in two parts in the form of scoop sections able to be pivoted about parallel pivot axes by a piston and cylinder unit. The scoop includes an attachment head so that the scoop may be pivotally connected with a boom of the mobile implement. In order to pivot the entire scoop laterally, a further piston and cylinder unit is integrally provided for lateral pivoting of the entire scoop about a central pivot axis in the attachment head, the further piston and cylinder unit is connected at one end with a pivot point, preferably one of the pivot axes of one of the scoop sections, and at the other end with a lever. The lever is connected at one end with a pivot point, preferably the other respective one of the pivot axes on the other respective scoop section and the other end of the lever is connected via a link with a projection on the attachment head.

Abstract: A high strength polymeric composite material dipper stick which comprises a structure including an outer casing member formed of high strength polymeric composite materials, an inner filler comprising polyurethane foam disposed inside the outer casing member in order to be integrated with the outer casing member, and a plurality of bushing holders made of polymeric composite material and disposed at connecting portions of the structure in order to be integrated with said structure. The present invention provides weight reduction of about 50%-60% in comparison with a conventional structural steel dipper stick, and also about 6.8%-13.9% in comparison with the conventional structural steel dipper stick on the basis of weight ratio of excavated earth.