Abstract: The invention relates to a low-permeability geotechnical barrier material including a blend of approximately equal parts of: aggregate particles, sand-size particles and manufactured composite particles that include a hydratable sealant material composed of naturally-occurring clay minerals and/or polymer-enhanced clay minerals, such that the actual percentage of clay mineral component is less than 10% by weight in the blended material. In a particular embodiment, the construction of a low-permeability geotechnical barrier using predominantly coarse grain materials by conventional compaction efforts is rarely attempted due to the difficulty of maintaining a uniform mix of well-graded sand and aggregate blends necessary to achieve low permeability. The regularly achievable permeability offered by this material blend when installed with specific proscribed techniques using conventional equipment can be 5×10?8 cm/sec or lower.

Abstract: A vibration damping device capable of maintaining high vibration damping effect, and a bucket for a construction machine. The vibration damping device has a laminated plate (20) having at least its inner region fixed in a noise-emitting base material (11), the inner region being a region (G) other then a region which becomes a loop in a vibration mode when the base material (11) is vibrated in a vibration mode with a predetermined frequency.

Abstract: The current invention describes a tool mounting device that permits a rotating attachment of a tool to an excavator arm in such a way that the tool can be used for work in relatively small work spaces, independent of the alignment of the excavator arm and the excavator.

Abstract: A work vehicle having an implement, including: a frame; a boom arm assembly connected at one end to the frame; an implement assembly pivotally connected to another end of the boom arm assembly and including the implement; a first hydraulic implement cylinder connected to the implement assembly and positioned to pivotally rotate the implement relative to the boom arm assembly when a piston of the first implement cylinder is extended or retracted, the first hydraulic implement cylinder being connected to a first electrohydraulic valve for activating extension and retraction of the piston of the first implement cylinder; and a controller connected to send control signals to activate the first electrohydraulic valve, wherein the controller sends a series of shaking control signals to alternately extend and retract the first implement cylinder to effect a shaking movement of the implement.

Abstract: A plow trenching apparatus for a vehicle having a raisable boom and a trenching plow pivotally mounted at a distal end of the boom in a plow holder, to extend rearwardly and downwardly therefrom. The plow has an upper portion and a lower portion, with a forwardly protruding toe portion, and a forward facing cutting portion. The plow is pivotable in the holder about a pivot axis located behind the holder and behind the plow, as seen in the travel direction of the plow during operation. A pivoting motion is imparted to the plow by a vibrator arranged at the upper portion. The vibrator is arranged to impart vibrations generally in a vertical plane, so that the lower portion is pivoted generally back and forth in the travel direction. The vibrator can be located behind or in front of the upper portion.

Abstract: Method and apparatus of continuously sifting pre-tilled topsoil to a controlled depth in place to remove stone, weed, grass and other materials and separate the stone and heavy materials from vegetation which is compressed into bundles.

Abstract: Apparatus for performing work by advancing a tool against a resistance thereto, and in particular, an excavator attachment or a rock concrete or engine crusher in which a pivoted jaw member (16) is advanced by a hydraulic ram (30) against a fixed plate (22) includes percussion device in the form of a hydraulic hammer acting against a fixed anvil (46,50) to assist the ram. Hydraulic fluid can be diverted from the ram to the hammer as required.

Abstract: The invention relates to a vibration bucket arrangement comprising a bucket part (1) that comprises a bottom (2), a rear part (3) and lateral end parts (4 to 5). The arrangement further comprises an attachment part (6, 8, 9, 9a to 9d, 99) with which the bucket part (1) can be attached to a construction machine, and a vibration unit (10) attached to the bucket part (1), which unit comprises a vibrating assembly, such as a wabbler (10a, 10b) to be used by a regulating element. The arrangement further comprises a flexible attachment (30) on which the bucket part is arranged. In accordance with the invention, the vibration bucket arrangement comprises a locking and releasing assembly (16, 17 to 22) for locking the flexible attachment (30) of the bucket part essentially rigid when moving from vibration use to bucket use and for releasing the locking when moving from bucket use to vibration use.

Abstract: A device and method for automatically vibrating the working members of a power construction vehicle such as a power excavator is disclosed. The device and method effectively change both the amplitude of vibration and the number of vibrations of a working member in proportion to a levering angle of an associated control lever during an excavating, breaking or ground hardening operation of a construction vehicle. The automatic vibration device is thus free from any select switch. The device simplifies the construction of the hydraulic system and more easily controls the automatic vibration operations, and thereby is convenient to operators.

Abstract: A new loader bucket vibrational sifting system for separating rock and other abrasive material from dirt extracted from a trench for a pipe line, thereby allowing the user to fill in the trench after laying the pipe with the sifted dirt eliminating contact by rock or other abrasive material with the pipeline and, thereby, preclude rusting, corrosion, or like damage. The inventive device includes a sifting structure formed to pivotally enclose a conventional loader bucket, a vibrating means secured near the pivoting end of the sifting structure for vibrating the sifting structure, and a hydraulic releasing means pivotally secured at one end to the sifting structure and pivotally secured at the opposite end to the conventional loader bucket manipulating the sifting structure to allow rocks to be released.

Abstract: An earth moving and tamping apparatus rig is provided which can backfill a trench and compact the backfill materials up to 100% compaction. A bucket and a vibrator are attached to a backhoe. The bucket retrieves the filling material and either dumps the material into a trench or sifts it through adjustable screening blades that form the bottom of the bucket. The apparatus includes a means to swivel the bucket with respect to the vibrator. The end of the bucket then compacts the filling materials into the trench. Each moving rig apparatus may also be equipped with an alternative two-bucket system, where one bucket fits inside the other one or is along side thereof. For trenches as wide as two feet to increase the area of dirt tamped, the two-bucket may be secured in juxtaposition to each other. For more narrow trenches, the second bucket may be secured inside the first bucket and the area tamped will only be the width of a single bucket.

Abstract: Disclosed is an excavating, sieving and grading device for a working crawler arranged such that each pair of first and second right and left legs 14, 14a and 17, 17a are vertically disposed to a bucket main body 7, the first right and left legs are connected to each other by a first reinforcing member 15, the second right and left legs are connected to each other by a second reinforcing member 18, and first and second guide rollers 16, 19 for supporting and guiding a first guide rail 21 disposed on the bottom surface of a movable frame 12 are provided on the first and second reinforcing members. With this arrangement, the movable frame provided with the sieve net is stably supported and guided to the bucket main body to thereby increase the strength of the excavating, sieving and grading device.

Abstract: A characteristic feature of the invention lies in that the striking and sic teeth are so arranged on the working edge of the bucket that the distance between the axes of the striking teeth is (3.5-4.5)b while the distance from the working edge to the blade of the striking tooth exceeds the distance from said edge to the blade of the static tooth by (1-3) b where b=width of blade of the striking tooth.

Abstract: A characteristic feature of the present invention is that a damping unit is rovided between the casing, impact tool and elements of a pneumatic hammer. The damping unit may have a different design.

Abstract: A hammer device is coupled to an outer portion of a handle, an operating portion is attached to the other portion of the handle, a holding section is attached to one side of the operating portion, and at the same time, a pair of excavators is rotatably attached to an outer portion of the holding section to conduct a bumping operation and opening and closing operations upon transmission from the operating portion. By this, burdens imposed on workers are reduced, at the same time, security of work is assured and time required for completion of works can be greatly shortened and reduced.

Abstract: An impact ripper (2) mounted on the rear portion of a construction machine, such as a bulldozer (1), for digging a hard soil layer is automatically controlled to reduce the operator's fatigue, to improve operability with regard to the posture of the impact ripper during operation of its vibrating mechanism (3), and to prevent breakdown of the impact ripper caused by wasteful striking. A vehicle tractive force and a vehicle speed required by digging resistance applied to a blade end (2a) of the impact ripper (2) are detected and signals obtained from the detections are inputted to a controller (4). When an automatic strike switch is on, an activating signal is outputted from the controller (4) to the vibrating mechanism (3) of the impact ripper (2) regardless of a vehicle body tractive force when a vehicle speed is less than a predetermined value.

Abstract: A vibratory compactor attachment for mechanical equipment, such as an excavator or backhoe. The attachment includes a support frame which is pivotally attached to both the boom and the tilt arms of the excavator. One end of the support frame carries a scraper blade that can be used for leveling soil prior to compaction. A drum frame is connected to the support frame and a compaction drum is mounted for rotation on the drum frame. To vibrate the drum, an exciter is mounted on the drum frame and resilient isolation mounts interconnect the support frame and the drum frame to minimize the transmission of vibration to the support frame.

Abstract: A soil surface remediation apparatus useful for decontamination of oil or chemical spill sites and toxic waste containing sites comprises a soil treatment apparatus mounted on a mobile trenching machine tractor which excavates trenches in a contaminated site to remove contaminated soil to the surface apparatus where the soil is decontaminated and is immediately replaced into the excavated trench in a continuous operation. Hydrocarbons or other useful by-products such as precious metals may be recovered from the soil. Both deep trenching and shallow trenching embodiments are disclosed.

Abstract: A method of lubricating the roller bearings journaling the rotatable, vibration imparting, eccentric mass in the closed cavity of a vibratory compactor housing comprising the step of providing a layer of lubricating oil at the bottom of the housing cavity having its upper surface spaced below but relatively close to the nadir point of the circular path of travel of the maximum radially extending node portion of the eccentric mass about its eccentric axis of rotation whereby to prevent penetration of the node portion directly into the oil layer itself and instead permitting the impacting of the node portion only with the upstanding thin columns of oil which are continuously formed at the upper surface of the oil layer, during the vibration of the housing and oil layer, to thereby splatter the oil from the impacted oil columns upwardly within the housing and into the roller bearings.