Abstract: The invention relates to a pipe arrangement with a fluid-carrying inner pipe and an outer pipe that surrounds the inner pipe, wherein spacers are arranged between the inner pipe and the outer pipe in such a way that a gap is formed between the inner pipe and the outer pipe, wherein the outer pipe is joined at its first axial end section in a material-bonded or cohesive manner to a first spacer, which is joined to the inner pipe in a material-bonded manner, and wherein the outer pipe is arranged at its second axial end section at least partially with a radial spacing to a second spacer, which is joined to the inner pipe in a material-bonded manner.
June 9, 2017
Date of Patent:
January 15, 2019
MTU Aero Engines AG
Hugh Alun John Jackson, Willem Bokhorst, Manfred Michl
Abstract: A tree stump excavation tool for use mounted for rotation from an excavation machine arm has first and second side plates extending from a body and a unitary plate mounted to lower ends of the side plates. The unitary plate has a generally helical profile and defines a blade with multiple, pointed teeth integrally formed along its forward edge. The teeth, disposed for cutting engagement with a substrate of soil and stump roots, are laterally spaced apart along the axis of rotation of the tool and angularly spaced in a direction of substrate ripping motion, wherein the teeth are engaged separately and in sequence for cutting the substrate. An excavation machine with a tree stump excavation tool is also described.
Abstract: A skidsteer loader grubbing attachment capable of removing vegetation by engaging the vegetation below and above ground. The grubbing attachment may include a frame, a pincer mounted to the frame, and a blade attached to the frame below the pincer.
Abstract: A land-clearing implement configured to be attached to a small earth-moving machine, such as a skid loader. The land-clearing device has a pusher assembly with telescopically extendable actuator arms that are operated by a hydraulic auxiliary source accessible from the interior of the earthmoving machine. When the actuator arms are extended, the forward end of the pusher assembly applies a pushing force on the trunk of a tree, pushing the tree until uprooted. The pusher assembly is supported by a mounting bracket that rests on the ground and provides stability to the pusher assembly. A pair of opposing grabber arms with C-shaped hooks is secured to the pusher assembly by pivoting securing rods. The grabber arms partially encircle and the C-shaped hooks dig into the root ball of the tree to provide stability as the pusher assembly is engaged.
Abstract: An apparatus for extracting plant species of varying heights and varying diameters adapted to be mounted on a conventional land vehicle includes a frame and an extracting member rigidly attached to and extends outwardly from a bottom edge of the frame. The extracting member includes a first elongated extracting portion having a knife-like free end, a pair of second extracting portions each positioned adjacent a respective edge of the first elongated extracting portion and having a cutting edge formed generally perpendicular to the respective edge of the first elongated extracting portion, and a pair of third extracting portions each connecting an end of the cutting edge of the second extracting portion with a respective end of the bottom edge of the frame. A pair of elongated member are attached to the rear surface of the frame for attaching it to the land vehicle.
Abstract: A method for constructing or rehabilitating a marsh or wetland comprises the step of inserting propagatable material into liquid or slurry emerging from a high-pressure spray nozzle to form a mixture. The liquid/ or slurry/propagatable material mixture is then sprayed over a marsh or wetland area desired to be constructed or rehabilitated.
Abstract: An apparatus for clearing brush for a four-wheel all terrain vehicle path, the apparatus to be attached to the front of and propelled by a four-wheel all terrain vehicle commonly referred to as a four-wheeler the apparatus comprising a set of blades on a V shaped self-supporting, wheel-mounted chassis.
Abstract: An attachment for front end loaders and for tree cutting devices attached to a front end loader provides a hydraulically extending serrated edge which may be positioned below the ground surface in front of the loader or the tree cutting device to remove small saplings and cut through roots around a tree. The attachment may also be retracted into an upright position out of the way of the front end loader, a front mounted accessory or a front mounted tree cutting device when using the accessory or tree cutting device and extended forward to push a material or a tree being cut in a direction in front of the accessory or tree cutting device and away from the front end loader.
Abstract: A combination rake and grubber implement mounted on a work vehicle such as a tractor or bulldozer has four main members: a lower, open or partially-closed multi-toothed rake; an upper rake that can gather, according to design and porosity, various rake products; grubbers that may be deployed, while the vehicle is moving or stationary, anywhere in an arc perpendicular to the rake plane ranging from below the bottom of the rake to above the rake; and a linkage that when actuated by some mechanical, electrical, or pneumatic force, moves the grubbers through their range of motion. In operation the grubbers bring rocks, debris, and severed roots to the surface for simultaneous raking along with undesirable surface rocks, debris, and vegetation. During operation, the vehicle operator may independently control the rake and grubber positions with respect to each other and with respect to the ground without having to dismount.
Abstract: Provided herein is a device which is useful in removing trees, stumps, and the like from various landscapes. A device according to the invention may be attached to existing earthmoving equipment, preferably in the place of a conventional bucket used on a track driven or tractor mounted backhoe attachment or other functional portion of a hydraulic excavator that is adapted to receive a bucket. A device according to the present invention may be caused to be operated beneath the surface of the ground, as in cases where it is desired to remove root masses and whole trees, such as mesquite and other species. In an alternate embodiment, a device according to the invention is useful above-ground for grasping small cedar trees and the like by grasping sabres affixed to the device. Methods for the use of such devices are provided.
Abstract: The invention provides a track frame structure which can increase a crawler actual ground contact length (L0) from a first track roller to an endmost track roller without increasing a whole length of a traveling apparatus. A notch portion (2a) having a size not contacting with an endmost track roller (6r) is formed in a portion facing to the track roller (6r) in a side of a crawler drive wheel (8) of a joint plate (2) provided so as to close one end portion in a longitudinal direction of a track frame (1), and the endmost track roller (6r) is arranged close to a side of the crawler drive wheel (8) so that the endmost track roller (6r) faces to an inner side of the notch portion (2a). A side portion of the notch portion (2a) in a joint plate (2A) is bent toward the crawler drive wheel (8).
Abstract: A tree saw attachment (10) for use with a loader vehicle includes a base frame (11), a generally V-shaped blade assembly (12), a brush guard (13), and a tweezer arm assembly (14). A swingable tweezer arm (29) of the tweezer arm assembly is movable using a hydraulic cylinder (33) to grasp objects against an upper surface of the base frame or the blade assembly. The brush guard and tweezer arm assembly are removable from the base frame as a single unit to facilitate shipping and assembly. A sprayer assembly (90) is positioned within the base frame for applying a herbicide to tree stumps cut by the V-shaped blade assembly. The blade assembly can be a single integral blade (42), or can be formed of right and left blades (70, 71) with intermeshing projections (73, 74) secured to a rib member (36) along a centerline of the blade assembly.
October 31, 2001
Date of Patent:
August 27, 2002
Great Plains Manufacturing, Incorporated
Abstract: A grubbing tool is provided for attachment to an excavator or other earth working machine, of the type having extensions from the boom such as a dipper stick and dipper stick linkage. The tool is moved arcuately and vertically to pull rooted brush having substantially sized taproots. The excavator's power is optimized at the cutting blade by the attachment of the dipper stick and dipper stick linkage near the top of the tool, as well as, the sizing and the configuration of the two primary side members. The cutting blade and both side members have both front and rear cutting edges, allowing a fore and aft pattern of approaching brush which optimizes tool effectiveness. The side members have substantially straight front and rear edges, which can be positioned flush with the disturbed surface following brush removal, providing a leveling function as the tool is moved laterally.
Abstract: In the field of clearance of unexploded ordnance from land, there is a need for an improved apparatus for removing unexploded ordnance from the ground. A cutting apparatus includes a plurality of blades on a rotatable shaft, the blades being tapered towards their distal ends. When the blades are driven forwardly through soil while the shaft rotates, they tend to loosen items such as solid ordnance and bring such items to the soil surface. The blades simultaneously sever scissile matter in the soil, thereby facilitating removal of the ordnance. The cutting assembly includes a conveyor for conveying unexploded ordnance away from the soil. The cutting assembly may be mounted on a vehicle including further means for rendering harmless the unexploded ordnance.
Abstract: A semi-submersible machine moves on rotatable endless belt tracks over diverse surfaces and has two tools on articulated booms for remediation of roadside drainage ditches, retention ponds and other shallow water bodies. One tool is a cutter bar for cutting vegetation at a plurality of angles and positions above or under water, and the other tool is a rotatable pair of opposing clawlike jaws for raking or scouring soil above or under water to restore percolation performance, and to remove loosened vegetative matter without removing soil and water. The vehicle is submersible to a depth of forty inches, and can traverse a slope of thirty degrees while its tilting control platform remains above water and level, thereby maintaining stability of the vehicle.
Abstract: A land clearing apparatus comprises a brush saw which is removably attachable to a brush rake which is in turn removably attachable to a vehicle such as a front end loader or a bulldozer. The brush saw comprises a wedge shaped blade with a clamping assembly mounted on a rear end thereof and extending thereabove. The clamping assembly includes opposed clamping members adapted to engage portions of the brush rake from opposite directions for removably securing the brush saw to the brush rake.
Abstract: A device is provided for clearing a swath within the earth. The device has a frame for mounting the device onto an industrial vehicle. A rotating track is disposed on the frame. At least one reinforcing panel is mounted adjacent an end of the track that protects the end of the track from binding and damage due to obstacles disposed on the swath being cleared. A bottom plate is disposed directly beneath the track, and a ton protecting shield is disposed above the track. When the vehicle moves forward, the bottom plate and the track operate to move a layer of earth from in front of the vehicle to a side of the vehicle.
Abstract: A device is provided for clearing a swath within the earth. The device has a frame for mounting the device onto an industrial vehicle. A rotating track is disposed on the frame. At least one reinforcing panel is mounted adjacent an end of the track that protects the end of the track from binding and damage due to obstacles disposed on the swath being cleared. A bottom plate is disposed directly beneath the track, and a top protecting shield is disposed above the track. When the vehicle moves forward, the bottom plate and the track operate to move a layer of earth from in front of the vehicle to a side of the vehicle.
Abstract: A brush rake for attachment to an excavator arm equipped with a bucket and a thumb having inner and outer pairs of teeth. The brush rake has a parallel array of rake teeth attached to a rake bar, and a mounting plate having one end thereof attached to the rake bar. An opposite end of the mounting plate is adapted to overlie the body of the thumb and to be received between the outer pair of teeth of the thumb. A parallel pair of apertured ears attached to the rake bar is so disposed thereon that when the rake bar is placed adjacent and transversely with respect to the teeth of the thumb, the ears lie adjacent and on opposite sides of the inner teeth of the thumb. Mounting holes are provided in the mounting plate and matching holes are bored through the body of the thumb. The brush rake is attached to the thumb by inserting pins through the ears and through holes bored through the inner teeth of the thumb, and by inserting mounting bolts through the mounting holes and matching holes in the thumb.
Abstract: A vegetation harvesting/clearing device consists of an assembly including a pair of hinged jaws and an open noose of cable, all of which is mounted on a load-lifting device of a prime mover such as a farm tractor. The open jaws are deployed to cause a patch of vegetation to be enclosed by the open noose. The jaws are closed around the vegetation, whereupon the noose is tightened to garrote the vegetation in a swath. The load lifting device raises the closed jaws to uproot the vegetation and to remove the swath of uprooted material to a disposal site where the swath is deposited.
Abstract: A root grubber tool for brush which is attached to the boom of an excavator, such as, a track excavator or backhoe. The tool includes a framework which has a pair of side members which support, at the lower end thereof, a cutting blade with its leading edge swept inward and downward to accommodate centering the cutting blade on the roots and providing a deeper cut at the center than at the edges. The framework includes mounting arms to secure the tool onto the boom for working the tool. The framework may include a cross support for assisting in gathering smaller brush. Also, the lower edges of the side members are bevelled to aid in the cutting operation. The tool may be maneuvered to depths of 18 to 24 inches to grub out the roots of the brush and secure it between the boom and the tool for displacement from the right-of-way.