Abstract: A system for a climbing apparatus including a housing assembly, a wheel assembly, a lock assembly, a rope assembly and a chainsaw assembly is disclosed. The housing assembly includes a housing having a rope wheel therein. The housing is mounted to a chainsaw to power the components within the housing to allow a user to ascend and descend a structure. The rope is secured to the top of a structure and then mounted to the rope wheel at an opposite end. The chainsaw is actuated to also actuate rope assembly. The rope wheel rotates to allow for rope to be fed, allowing a user attached to the housing to ascend or descend, as needed. With the lever the user may lock the rope in place to allow the user to work at a desired height on a structure.

Abstract: An aerial saw is provided, including an elongated arm having a proximal end and a distal end; a saw blade rotatably connected to the elongated arm; an engine enclosure having a distal end and a proximal end, the engine enclosure coupled to the elongated arm; and a saw attachment member connected to the saw assembly between saw blade and the proximal end of the engine enclosure; the saw attachment member connected to a support structure at a first connection point.

Abstract: A measuring system for reducing the effort necessary to measure tree strength that includes support posts, a winding device configured to wind a cable supported by the support posts, a winding device configured to wind the cable, a hoisting device coupled to the cable and configured to move in air when the cable is wound by the winding device, and a measuring device hung from the hoisting device and configured to measure the strength of a tree.

Abstract: A field-configurable apparatus for different aerial applications is provided. The field-configurable apparatus attaches to an aerial boom on a mobile carrier. The apparatus can perform rapid semi-precise cutting of vegetation. Additionally, the apparatus can perform more precise trimming of one or more areas (e.g., limbs) and optionally use a limb clamp to prevent cut limbs/vegetation from arbitrarily falling on objects below the cutting area. Still further, the apparatus can have a grapple or similar device attached to the end of the boom for use in relocating debris or for loading debris. Other industrial applications are also possible (e.g., commercial water blasting, deicing of planes, etc.). In each configuration, the apparatus comprises one or more rotatable or pivoting couplings to allow for rotation about one or more axis and therefore allow precise manipulation of an aerial tool assembly from an operator in the vehicle or on the ground.

Abstract: An improved aerial saw is provided, including (a) an elongated arm having a proximal end and a distal end; (b) a saw blade rotatably connected to the elongated arm between its proximal and distal ends; (c) an engine enclosure having a distal end and a proximal end, wherein the distal end of the engine enclosure is coupled to the proximal end of the elongated arm; and (d) a saw attachment member connected to the saw assembly between saw blade and the proximal end of the engine enclosure; wherein the saw attachment member is connectable to a support structure at a first connection point.

Abstract: A forestry harvester for delimbing a tree with an angular upper cutter and side cutters while advancing the tree by feed rollers, wherein when the feeding of the tree is stopped due to being incapable of cutting the limbs off, the angle-shaped upper cutter and the side cutters are moved relative to the tree with rotation of the feed rollers stopped to cut off the limbs of the tree therewith. The forestry harvester comprises a feed unit (1 or 100) including a pair of left-hand and right-hand clamp arms (8, 9 or 108, 109) and feed means (20 or 120), a chain saw box (22a) having a power chain saw (22), a delimbing unit (2) including an angle-shaped upper cutter (52) and a pair of cutter arms (26, 26) each having a side cutter (25), guide mechanism for guiding the delimbing unit for forward and rearward movement of the delimbing unit relative to the feed unit, and a hydraulic cylinder (47) actuated to move the delimbing unit (2) toward and away from the feed unit (1 or 100).

Abstract: A curved blade for a delimbing head operable to cut branches from a felled tree is disclosed. The curved blade comprises a cutting rim, at least one portion of which comprises a continuous flange defining a continuous cutting edge, as well as at least one row of ribs that are straight and parallel to each other, extending in the direction of at least one face of the cutting rim from the continuous flange. The continuous cutting edge of the blade having these straight parallel ribs reduces the lateral load of the continuous cutting edge during the operation of cutting branches from a felled tree.

Abstract: A lawn and garden tool having a handle, a tool head and an adjustable length boom, wherein the boom includes telescoping first and second boom sections. The tool includes a connector assembly having a lock adapted to selectively lock the boom sections relative to one another at any one of a plurality of telescopic locations. The connector assembly further includes a latch adapted to maintain engagement of the boom sections relative to one another, wherein the latch may be manipulated by an operator to selectively allow separation of the boom sections.

Abstract: This invention concerns a feed wheel arrangement intended to be used in a timber working head for at least one of felling, trimming, bark-peeling and cutting of a tree or tree trunk, comprising a frame to which feed wheels and grip fittings are mounted either fixed or in a manner that allows them to be removed. The feed wheel arrangement comprises a feed wheel with a power transfer arrangement lowered centrally in a jacket of the feed wheel, a motor arranged at a distance from the feed wheel, and a power transfer arrangement for the transfer of rotational force from the motor to the feed wheel, for the feed of the tree or trunk through the timber working head. The invention concerns also a timber working head, a crane and a timber working machine.

Abstract: A field-configurable apparatus for different aerial applications is provided. The field-configurable apparatus attaches to an aerial boom on a mobile carrier. The apparatus can perform rapid semi-precise cutting of vegetation. Additionally, the apparatus can perform more precise trimming of one or more areas (e.g., limbs) and optionally use a limb clamp to prevent cut limbs/vegetation from arbitrarily falling on objects below the cutting area. Still further, the apparatus can have a grapple or similar device attached to the end of the boom for use in relocating debris or for loading debris. Other industrial applications are also possible (e.g., commercial water blasting, deicing of planes, etc.). In each configuration, the apparatus comprises one or more rotatable or pivoting couplings to allow for rotation about one or more axis and therefore allow precise manipulation of an aerial tool assembly from an operator in the vehicle or on the ground.

Abstract: A field-configurable apparatus for different aerial applications is provided. The field-configurable apparatus attaches to an aerial boom on a mobile carrier. The apparatus can perform rapid semi-precise cutting of vegetation. Additionally, the apparatus can perform more precise trimming of one or more areas (e.g., limbs) and optionally use a limb clamp to prevent cut limbs/vegetation from arbitrarily falling on objects below the cutting area. Still further, the apparatus can have a grapple or similar device attached to the end of the boom for use in relocating debris or for loading debris. Other industrial applications are also possible (e.g., commercial water blasting, deicing of planes, etc.). In each configuration, the apparatus comprises one or more rotatable or pivoting couplings to allow for rotation about one or more axis and therefore allow precise manipulation of an aerial tool assembly from an operator in the vehicle or on the ground.

Abstract: An insulating felling grapple is used with an insulating utility vehicle. The utility worker stands on the ground near the worksite and remotely controls the insulating felling grapple and the utility vehicle to perform the task. In addition to other standard trimming and removal tasks, the insulating felling grapple is adapted to allow for the removal of energized vegetation material. In one method, the utility worker grasps the energized vegetation material, lifts or moves the energized vegetation material such that it is no longer energized, severs the non-energized vegetation material, and moves the severed vegetation material to a discard location. A boom assembly of the utility vehicle includes a primary insulation segment. The felling grapple includes a secondary insulation segment, as well as a grapple and a feller. The grapple has at least two tines for gripping the energized material. The feller is configured to sever the energized or nonenergized material.

Abstract: An implement system for a machine. The implement system includes a boom, an implement, a roller assembly and a carriage. The boom has a telescopic structure and a first end. The implement is coupled to the first end of the boom. The roller assembly is configured to be coupled to the machine. The carriage is engaged with the roller assembly and is coupled to the boom. The carriage is configured to move linearly along a longitudinal axis of the machine between a first position and a second position.

Abstract: A mobile apparatus with a fluid pressure-operated implement mounted at a distal end of a boom includes a connection apparatus for selectively rotating the implement about an actuator axis at the distal end of the boom. The connection apparatus includes a rotary actuator and a pressurized fluid circuit for delivery of pressurized fluid through the rotary actuator to the implement. The pressurized fluid circuit includes channels establishing a fluidic connection axially through the rotating shaft of the rotary actuator. The pressurized fluid circuit facilitates passage of pressurized fluid through an internal, protected environment to the implement.

Abstract: A tree felling wedge (100) comprising at least one pressure sensor (110), an alert interface (130) and a controller (120) is provided. The controller (120) is configured to activate said tree felling wedge (100) in a tree felling monitoring mode, detect a pressure level, detect a release in said pressure level (R) indicating the falling of a tree and in response thereto provide an alert through said alert interface (130).

Abstract: The invention relates to an improved head for harvesting of trees. In particular, the head according to the invention is an improvement of a head for harvesting of trees as disclosed in European Patent EP2515628, which state of art is hereby incorporated by reference. In the known head, the balance between the saw pressure and the saw speed is controlled by the oil pressure at the inlet port of the hydraulic motor. This has the drawback that the saw pressure is depending on the saw speed. It is the aim of the invention to provide an improved head for harvesting trees, wherein the saw pressure is constant and independent of the saw speed.

Abstract: Disclosed herein is an apparatus preferably coupled to a boom on a truck, the apparatus capable of a plurality of configurations for a variety of applications. In one configuration, the apparatus can perform rapid semi-precise cutting of vegetation. In another configuration, the apparatus can perform more precise trimming of one or more areas (e.g., limbs) and optionally use a limb clamp to prevent cut limbs/vegetation from arbitrarily falling on objects below the cutting area. In yet another configuration, the apparatus can have a grapple or similar device attached to the end of the boom for use in relocating debris or for loading debris into a removal facility such as dump or garbage truck. In each configuration, the apparatus comprises one or more rotatable or pivoting couplings to allow for rotation about one or more axis and therefore allow precise manipulation from an operator in the vehicle or on the ground.

Abstract: An articulated harvesting combine includes of a forward power processing unit (PPU, 12) and a rear grain cart (14), wherein the PPU carries dual axially mounted engines (36 and 38) with oppositely opposed crankshafts (100 and 102) with one toward the rear grain cart and the other engine away from the rear grain cart, wherein the dual engines share a common radiator, single air conditioning condenser, single alternator, common batteries, common fuel tank and exhaust fluid tank; but have separate hot exhaust treatment system, separate hot exhaust manifolds, and separate side-mounted charge air coolers.

Abstract: In certain embodiments, an apparatus may be configured to spray a plurality of layers of paint onto a substrate through a plurality of iterations to produce a workpiece formed of a plurality of layers of paint. In some embodiments, the apparatus may include a cutting blade coupled to the apparatus and configured to cut the workpiece into a plurality of portions.

Abstract: A timber-working head and method of operation are provided. The head has a frame to which first and second arms are pivotally connected. Respective linear drive actuators pivot the respective arms relative to the frame to open and close them. At least one processor controls application of pressure by the linear drive actuators such that the arms grasp timber to be processed by the head. The position of the linear actuators is used to determine whether the timber is offset from a feed axis of the frame beyond a predetermined distance, and the application of pressure by one of the linear actuators to reduce the offset to be within the predetermined distance.

Abstract: A cutting device is configured to attach to a boom arm and includes a saw assembly with a cutting portion configured to cut into a target surface. The cutting device also includes a motor assembly coupled to the saw assembly. The motor assembly has at least two motors configured to rotate the saw assembly about two different axes. The cutting device further comprises a control system operatively coupled to the motor assembly. The control system has at least two sensors coupled to the saw assembly and the control system is configured to position the saw assembly to cut a target surface based on feedback from the at least sensors.

Abstract: A mobile apparatus with a fluid pressure-operated implement mounted at a distal end of a boom includes a connection apparatus for selectively rotating the implement about an actuator axis at the distal end of the boom. The connection apparatus includes a rotary actuator and a pressurized fluid circuit for delivery of pressurized fluid through the rotary actuator to the implement. The pressurized fluid circuit includes channels establishing a fluidic connection axially through the rotating shaft of the rotary actuator. The pressurized fluid circuit facilitates passage of pressurized fluid through an internal, protected environment to the implement.

Abstract: A device for allowing work to be carried out on or about an object includes at least one gripping arrangement. The at least one gripping arrangement is configured to grip and traverse the object so as to reach a desired location on the object and to anchor the device thereto for allowing the work to be carried out.

Abstract: A semimobile crusher plant as well as a process for displacing and supporting a semimobile crusher plant are disclosed. The semimobile crusher plant is permanently connected to a crawler-type chassis that has double crawlers, on which the entire load of the crusher plant rests during the displacing. During the crusher operation, the entire load of the crusher plant, including a payload, is supported by means of support rockers more or less equally on the double crawlers of the crawler-type chassis and on foundation blocks provided at the operating sites of the crusher.

Abstract: Described embodiments include a system and an apparatus. A described mobile robotic device includes a mobile chassis configured to travel on a transmission line of a power transmission system. The mobile robotic device includes an inspection module physically associated with the mobile chassis and configured to automatically inspect a structure associated with the power transmission system. The mobile robotic device includes a risk-assessment module physically associated with the mobile chassis and configured to assess a potential risk to the power transmission system in response to inspection data provided by the inspection module. The mobile robotic device includes a communication module physically associated with the mobile chassis and configured to output data indicative of the assessed potential risk.

Abstract: A portable and remotely controlled motor and chain/bar apparatus that can trim limbs in excess of about 60 feet from the ground level in an extremely safe manner. An operator on the ground can remove a limb from a safe distance exceeding about 50 feet from where the limb would fall or be lowered to the ground. A motorized chain/bar assembly is secured to a small platform which can easily be lifted for tree delimbing. For safety and stability, the chain/bar cutting platform is secured to all sides of the limb to be cut. Once in position, the operator by applying power to the unit, starts the cycle as the motor chain/bar carriage travels to the top of the platform, the motor/chain/bar rotates from a vertical to a horizontal position and as the motor chain/bar is engaged it travels in a downward motion towards the lower section of the platform creating the pressure required to complete the delimbing process.

Abstract: An apparatus, such as for tree trimming, includes a mobile carriage having a frame and a pedestal supported by the frame. The apparatus further includes a boom, such as a telescoping boom that is secured to the pedestal through a boom support. The pedestal is pivotable with respect to the carriage frame so that the boom may be selectively operated in a variety of orientations. The mobile carriage of the apparatus is sufficiently compact to fit though tight openings, while also being capable of stably supporting boom extension for operation of a distal end of the boom at elevated heights.

Abstract: A delimber for performing a delimbing operation is disclosed herein. The delimber includes a cutter head assembly pivotally mounted on a yoke assembly. The yoke assembly is rotatably mounted on a base assembly. The cutter head assembly includes a base portion with a first side and a second side. A box structure is arranged on the first side, whereas a saw assembly is structured and arranged on the second side. The box structure and the saw assembly define a throat region between the two sides. The throat region defines an infeed side and an exit side. At least one curved knife is pivotally supported within the throat region. Further, an elongated post is positioned adjacent the infeed side of the throat region. The infeed post has a first end attached to the box structure, and a second end attached to the base portion.

Abstract: An airborne tree trimming apparatus for installation on a helicopter or the like is described. The apparatus is designed to prevent arcing from power lines and includes a saw assembly having a housing that is at least partially non-conductive; an internal combustion engine operatively connected to the saw assembly; a boom extension having a lower end connected to the engine, and an upper end attachable to the helicopter, at least a part of the boom extension being non-conductive; and a safety cable extending through the boom extension, at least a part of the cable being non-conductive.

Abstract: An airborne vegetation trimming apparatus includes an apparatus housing, an elongated saw boom extending from the apparatus housing, a plurality of rotatable saw blades carried by the saw boom, a saw blade operating system drivingly engaging the saw blades, a rotatable tubing coupling carried by the apparatus housing and a tubing coupling rotation motor drivingly engaging the tubing coupling.

Abstract: A train like vehicle composed of a plurality of interconnected cars (e.g. about 25 cm in length) linked together with springs and cables making it flexible. The shape and tension of the unit will be altered by remote control or an autonomous response system enabling steering and ability to grab on to various shapes of tree trunks and branches. The cars will be equipped with drive wheels that will move the vehicle. The device is configured to include a rotating turret capable of turning in a 360-degree circular motion, and a turret attached to the belly of the front car that is configured to roll 180 degrees back and forth. A hinge after the turret may be provided to give it more angle and flexibility to hold a chainsaw.

Abstract: An apparatus, such as for tree trimming, includes a mobile carriage having a frame and a pedestal supported by the frame. The apparatus further includes a boom, such as a telescoping boom that is secured to the pedestal through a boom support. The pedestal is pivotable with respect to the carriage frame so that the boom may be selectively operated in a variety of orientations. The mobile carriage of the apparatus is sufficiently compact to fit though tight openings, while also being capable of stably supporting boom extension for operation of a distal end of the boom at elevated heights.

Abstract: A timber-working head is configured to hold a felled tree and to feed the felled tree. The timber-working head comprises a frame and a delimb knife module mounted to the frame and configured to delimb the felled tree when the felled tree is fed past the delimb knife module. The delimb knife module has a central blade, a pivotable first side blade, and a pivotable second side blade.

Abstract: A tree harvesting system includes a loader and a delimber. A camera system mounted on the delimber permits an operator to view an interaction area between a delimbing saw or toping saw and the tree being cut while the operator remains safely in a cab of the loader. The camera system provides image data to a display system located in the cab of the loader, and the image data may be viewed and/or processed to provide information about the interaction area, physical data about the tree, or some combination thereof. Advantageously, the tree harvesting system may allow for more accurate saw cuts at a preferred location of the tree, which in turn may result in a higher dollar amount and more efficient distribution of sticks to the mills.

Abstract: A multi-axis controlled self-climbing tree trimmer used for shaping and severing peripheral growth from a tree is provided herein. The trimmer typically includes a structural segment hinged together to form a rigid chassis that surrounds a tree trunk climbing segment and a trimming portion. The climbing portion is retained within the structural segment in the form of a number of inward-extending carriages containing one or more rollers for gripping the tree trunk during climbing, and the trimming portion may include a rotatable split ring gear containing centrifugally rotating trimming blade members and/or a cutting tool on a positionable arm. When rotated, the blade members unlatch and pivot, into the trunk of the tree to effect controlled trimming. The system may utilize a multi-axis control system that uses linear interpolation, circular interpolation and coordination of all axes to enable the trimmer to follow an XYZ contour selected by a user.

Abstract: A timber-working head comprises a frame, first and second delimb arms pivotally coupled to the frame, a delimb cylinder, and delimb cylinder hosing. A torso of the frame comprises a box enclosure, and a hosing channel extending through a cavity of the box enclosure. The delimb cylinder is mounted to both the first delimb arm and the second delimb arm and operable to pivot the first and second delimb arms relative to the frame to open and close them. The delimb cylinder is oriented in its longitudinal dimension laterally relative to the torso, and is positioned in front of and floatable laterally relative to the torso. The delimb cylinder hosing is routed from the delimb cylinder through the hosing channel. The hosing channel expands laterally relative to the torso as the hosing channel extends along its length forwardly through the box enclosure.

Abstract: A method for cutting a branch from a tree using a blade, the branch extending outwardly from a main tree portion, the method comprising: positioning the blade substantially adjacent to the branch and substantially perpendicular thereto; and moving the blade transversely across the branch to cut the branch. Moving the blade transversely across the branch includes moving the blade along a curved path, the curved path being concave in a direction facing the main tree portion. Also, a tree pruning head for performing the method.

Abstract: A positioning system for attachment to a vehicle for operation of a power tool by a ground-based operator sitting in the vehicle provides a telescoping mast attached to the vehicle, a pivot bracket connecting an upper arm to the upper portion of the telescoping mast, mounting means for mounting the power tool on the upper arm; and power means for operating the power tool from the operator's position in the vehicle.

Abstract: For hand-operated garden shears, in particular tree-pruning shears, with a ratchet mechanism, it is proposed that, between a hand lever (H2) and a scissor lever (H1) between which a ratchet lever (RH) can engage in different latching positions according to the ratchet mechanism, there is also provided, in addition, a preferably rotatable abutment surface (AF) on the hand lever (H2) and a mating bearing surface (GF) on the lever extension, or vice versa, which, at the end of an initial closing operation with the ratchet lever (RH) in a first ratchet position, allow a continuation of the cutting operation as a direct cut without further use of the ratchet mechanism.

Abstract: A double chain saw arrangement which has diametrically oppositely extending chain saws powered by a single motor driving two sprockets on said hub, each engaged with an associated chain saw chains on each chain saw bar mounted to the hub. A series of hooked capture pieces project from one side of the chain saw bars in a plane parallel to the chain saw bars, which pieces act to cause brush and limbs to be captured and forced into contact with the saw chains to be cut thereby.

Abstract: A device and method for cutting and mulching material such as trees, bushes, roots, stumps, vegetation, and other debris. The device includes a frame adapted to be combined with a prime mover vehicle. The frame supports a rotating cutting element having a plurality of rotating cutters. The cutting element is actuated by a motor to spin at a speed and with a force suitable for cutting trees and other material. The frame further includes a supporting surface that helps to support the material and guide it toward the cutting element as the device is moved downward to cut and mulch the material.

Abstract: Disclosed herein is an apparatus preferably coupled to a boom on a truck, the apparatus capable of a plurality of configurations for a variety of uses. In one configuration, the apparatus can perform rapid semi-precise cutting of vegetation. In another configuration, the apparatus can perform more precise trimming of one or more areas (e.g., limbs) and optionally use a limb clamp to prevent cut limbs/vegetation from arbitrarily falling on objects below the cutting area. In yet another configuration, the apparatus can have a grapple or similar device attached to the end of the boom for use in relocating debris or for loading debris into a removal facility such as dump or garbage truck. In each configuration, the apparatus comprises one or more rotatable or pivoting couplings to allow for rotation about one or more axis and therefore allow precise manipulation from an operator in the vehicle or on the ground.

Abstract: The invention relates to a harvester head that comprises the frame of the harvester head to be connected to the end of the hoist boom of a forest machine, a feeding device for moving a tree trunk, a front blade and/or upper delimbing blades before the feeding device, a cutting device for cutting trunks after the feeding device, as well as a lower delimbing blade between the feeding device and the cutting device, installed on the side of the cutting device in the frame of the harvester head. In the harvester head according to the invention, the lower delimbing blade is arranged to turn into a delimbing position around the tree trunk and into a space-saving position between the outer surface of the tree trunk and the frame of the harvester head, away from the path of the tree trunk.

Abstract: A feller device for felling and delimbing of tree trunks, as well as a delimbing blade device for delimbing of tree trunks, is disclosed. The delimbing blade device comprises: a delimbing blade having a cutting edge for delimbing of a tree trunk; a first joint, by means of which the delimbing blade can be connected to the felling device in a rotatable manner; a cylinder actuator, by means of which the delimbing blade can be moved into at least two different positions; and a second joint, by means of which the cylinder actuator is coupled to the delimbing blade. In a first example, the cylinder actuator can be placed almost parallel to a line extending via the first joint and the second joint so that the cylinder actuator and a third joint belonging to the same cylinder actuator for connection are placed in the area between the first and the second joint.

Abstract: Method and device for delimbing a tree trunk (60) in a compliant gripping state defined by a set of limbing knives (18, 24, 26, 28) enclosing the trunk. The limbing knives are repeatedly adjusted through a control unit (46) for adaption of the gripping state to a varying thickness of the trunk when the trunk is advanced between the knives for the delimbing of the trunk. The invention comprises entering a desired compliance (D1) of the gripping state in the control unit (46), detecting an actual compliance (d) of the gripping state, and performing each adjustment of the limbing knives via the control unit until the actual compliance (d) corresponds to the desired compliance (D1).

Abstract: A timber-working head comprises a frame, first and second delimb arms pivotally coupled to the frame, and a single delimb cylinder operatively coupled to both the first delimb arm and the second delimb arm to pivot the first and second delimb arms relative to the frame to open and close them. The first and second delimb arms are otherwise operatively unconnected from one another allowing pivotal movement of each of the first and second delimb arms without corresponding pivotal movement of the other of the first and second delimb arms. The second delimb arm comprises a cam stop defining a variable closure point for the first delimb arm, and the first delimb arm is configured to pivot into closed engagement with the cam stop.

Abstract: A system for measuring the length of a tree being processed through a delimber including a log feed roller mechanism for moving the tree, a delimbing head for delimbing the tree that is movable in a forward and reverse direction relative to the log feed roller mechanism, a measuring wheel resiliently mounted on the delimbing head, and a trimsaw movably mounted on the delimbing head. The length of the processed tree extending beyond the delimbing head may be calculated from signals encoded by the log feed roller mechanism and the measuring wheel. Logs may be cut from the tree by the trimsaw. Two photosensors located at known positions may be used to calculate the total length of the tree.

Abstract: A motor for a tree processing machine is provided. The motor includes a mechanism configured to drive a wheel. The wheel is configured to engage a portion of a tree. The motor also includes a housing containing the mechanism. The motor further includes an encoder. The encoder is configured to be operably coupled to the mechanism. The encoder is also configured to generate a signal indicative of a length of a portion of a tree engaged by the wheel. The encoder is contained in the housing.

Abstract: A shear attachment is presented for use with different types of motorized vehicles and is generally provided with an upper cutting jaw, a lower receiving jaw and a plurality of teeth along the upper surface of the lower jaw to grip an object while it is being cut between the upper and lower jaws. A single actuator may be used to move the cutting jaw between open and closed positions. The shear may be pivoted about a horizontal axis with respect to its mounting bracket to facilitate cutting at different angles. The shear is removably coupled to the vehicle using a universal hitch. The efficient design of the shear makes it durable, inexpensive to manufacture and easy to operate.

Abstract: A mechanism designed to remove difficult to reach overhead tree branches. All power is derived from a standard 120 volt AC outlet. It is pneumatically controlled in 2- axes thru a main column containing one or a plurality of concentric cylinders and a separate air cylinder for height and elevation control. An electric powered saw is mounted at the end of the highest telescoping section. A pressure/vacuum pump provides the required force. Mobility is facilitated by three wheels, one of which is used to steer and position the saw into place for cutting. A control panel contains two pairs of pneumatic directional and pressure regulating valves for position control of a motorized saw blade by way of control over a main column and air cylinder.