Abstract: The invention relates to a screening, crushing or mixing bucket.

Abstract: The invention relates to a method and apparatus for returning the oil drained from a working pressure space of a hydraulic motor into a motor casing to an oil line, which is connected to the motor and which is in communication via a divider with intra-motor flow channels which are in communication with the working pressure spaces. The oil seeping into the casing is conveyed by means of pressure variations internal of the hydraulic motor, pulsating consistently with rotating motion, into the oil line presently at a lower pressure and connected to the motor by way of said divider. Therefor, the casing space is connected by a return conduit through a one-way valve to at least one flow channel, which lies between the divider of the motor and the working pressure space of the motor.

Abstract: The invention relates to a leakage oil return apparatus for a hydraulic motor. The apparatus is used for returning the oil leaked from the working pressure space of a motor (1) into a motor casing (12) from the casing (12) back to a return line (2) of the motor. Consequently, the return pump (5) driven by a shaft (3) of the hydraulic motor (1) has its suction side (7) connected with said casing (12) and its delivery side (6) conencted by way of non-return valves (4) with pressure and return lines (2) of the motor (1) in such a way that flow communication is established always with the line having a lower pressure. It is preferred that the return pump (5) have its delivery side (6) connected by way of a pressure proportional valve (8) with said casing (12).

Abstract: A method and apparatus for blending and transferring earth material at a blending site. The apparatus has a sinking shank mounted on the end of a boom of a working machine. Two cutter drums are mounted in spaced relation on the end of the shank for rotation about a horizontal axis. The working machine is advanced toward the blending site. The cutter drums are sunk into the earth material at the blending site and rotated to effect blending. The cutter drums are drawn toward the working machine to further effect blending and transfer a portion of the blended earth material to an accumulation of blended earth material over which the working machine advances.

Abstract: The invention relates to a method and an apparatus for accelerated biodegradation of organic matter. The apparatus includes an enclosure for receiving a stack of organic matter and at least one fan connected to a series of aeration ducts for directing a gas containing oxygen through the stack. After passing through the stack the gas is collected and passed through a scrubber and a heat exchanger that cools the gas. A portion of the gas is exchanged with a portion of a replacement gas and then the gas is recirculated through the stack in a substantially closed loop system. The temperature, oxygen content, and flow rate of the gas are controlled to provide a sustained accelerated rate of biodegradation in the stack. In addition, the stack is periodically agitated.

Abstract: The invention relates to a bucket crusher to be mounted in place of the bucket of an excavator or a bucket loader. Horizontal crushing shafts (12) provided with crushing tools are superimposed at a small distance from each other and adapted to be rotated in the same rotating direction. A pivoting axle (4) for a pivotably journalled compression and feeding plate (1) is located in the top section of the bucket. The plate (1) can be turned for pressing the material to be crushed against the crushing shafts, whose rotating direction is selected in such a manner that the crushing tools within said bucket travel towards said pivoting axle (4).

Abstract: Soil materials are screened and crushed simultaneously in a bucket of an excavating machine having its back wall replaced by rotatable crushing and screening elements. The crushed and screened materials fall down through the back wall and the non-crushable materials with size exceeding the size of screen openings remain in the bucket for dumping in the pile of a coarse pieces.