Abstract: A construction machine of the present invention is provided, in a compartment formed by a cover, with an engine, a centrifugal fan, and a heat exchanger for exchanging heat between cooling air blown by the centrifugal fan and a specified medium, wherein the centrifugal fan and the heat exchanger are arranged further upstream than the engine with respect to flow of cooling air, so that cooling air sucked in by the centrifugal fan is led to the engine after passing through the heat exchanger.

Abstract: A hydraulic pipe arrangement of a working machine is not in contact with an obstacle and no torsion and no bending are generated. Accordingly, in a hydraulically driven type working machine provided with a boom (1) having a vertical swing supporting point supported at a base end side by a machine frame and a joint connection supporting point in a front end side, an arm (2) connected in a base end side to the joint connection supporting point, a boom driving hydraulic cylinder (6a) hoisting around a hoist supporting point provided in the machine frame so as to drive the boom, an arm driving hydraulic cylinder (7), and a working tool driving hydraulic cylinder (8), a swivel joint mechanism relaying a hydraulic pipe arrangement from a side of the machine frame is provided at a center of at least one of the vertical swing supporting point, the joint connection supporting point and the boom driving hydraulic cylinder hoist supporting point.

Abstract: A lip assembly is disclosed. The lip assembly comprises a lip having an upper surface, a lower surface, a front portion, and a rear portion. A plurality of holes is disposed between the front portion and the rear portion. The lip also includes support members. Each support member is disposed adjacent to a hole within the plurality of holes and is positioned to inhibit movement of a tooth assembly coupled to the hole. A plurality of tooth assemblies extend away from the lip and are respectively coupled to the lip via the plurality of holes. The lip assembly may be used with an excavation bucket body.

Abstract: An elastic-bodied crawler, in which a ground pressure distribution is equalized and generation of local wear in use is prevented to provide for durability, and which is driven by drive power from driven projections provided on an inner peripheral surface of the crawler, comprises load propagating means embedded centrally of the crawler in a widthwise direction to extend over treads of rollers. The load propagating means causes pressing forces (ground pressure) of the rollers to act generally in the widthwise direction whereby a ground pressure distribution on a ground surface of the crawler is equalized, local wear in lug portions is eliminated to enhance durability of the crawler.

Abstract: A boom body (23) comprises a boom front member (20), a boom intermediate member (22) and a boom rear member (21). An arm-connection bracket (24) is jointed to the boom front member (20) and a vehicle body-mounting bracket (25) is jointed to the boom rear member (21), thereby forming a boom. With this structure, a cross section of the boom body (23) is less prone to be deformed and therefore, the plate thickness can be reduced, the rigidity of the boom body (23) can be increased without mounting a cross section restraint material and the cross section of the boom is not deformed. Therefore, it is possible to reduce the boom in weight.

Abstract: An apparatus for loading, breaking, size reducing, sieving, separating and/or mixing, wherein the apparatus is designed as an attachment for excavators or loaders. The apparatus is provided with only a single rotor as well as a breaker or impact rail or edge opposite the rotor.

Abstract: A boom body (23) comprises a boom front member (20), a boom intermediate member (22) and a boom rear member (21). An arm-connection bracket (24) is jointed to the boom front member (20) and a vehicle body-mounting bracket (25) is jointed to the boom rear member (21), thereby forming a boom. With this structure, a cross section of the boom body (23) is less prone to be deformed and therefore, the plate thickness can be reduced, the rigidity of the boom body (23) can be increased without mounting a cross section restraint material and the cross section of the boom is not deformed. Therefore, it is possible to reduce the boom in weight.

Abstract: A construction machine having a device for attaching and detaching a counterweight according to the present invention comprises a lower traveling body; an upper rotating body mounted rotatably on the lower traveling body; the upper rotating body having a support bed standing out from a rear part thereof; and a device for attaching and detaching a counterweight mounted on the support bed. The attaching and detaching device comprises a telescoping device having a lower end pivotally connected in the vicinity of the support bed, a restiform body suspended through a guide portion provided on the telescoping device; and oscillating structure for oscillating the telescoping device around the lower end as fulcrum. The oscillating structure displaces the telescoping device extended from a substantially vertical attitude to an inclined attitude when the counterweight is detached.

Abstract: The present invention provides a compact hydraulic excavator comprising: a lower traveling body, an upper rotating body installed rotatably on the lower traveling body, an apparatus cover risen from a floor plate of the upper rotating body, an operator's seat arranged on the apparatus cover, an operator's seat fixing member for fixing the operator's seat, a cabin provided astride of the apparatus cover and the floor plate, the apparatus cover having the side and the back surface exposed to outside so that the cabin serves as a part of the side and the back surface, and a mounting plate projected substantially in a horizontal direction from the operator's seat fixing member, the side wall of the cabin being risen from the outer circumferential edge of the mounting plate. According to the present invention, it is possible to install a larger cabin than the size of an existing compact hydraulic excavator without newly re-designing an apparatus cover.

Abstract: The present invention is a combination snowplow and bucket for attachment to a vehicle for the purposes of plowing, scooping, transporting and dumping snow. The present invention is a curved plow member having a concave plow face. The concave plow face has a center portion and first and second side portions extending from the center portion. The first and second side portions are inwardly bent toward the center portion. The present invention also has a generally planar bottom plate affixed to the plow member. The bottom plate has a scraper edge that extends from the first side portion to the second side portion. The center portion, the first and second side portion and the bottom plate collectively define a bucket used to transport the snow. Alternately, a wear plate can be affixed to the underside of the bottom plate.

Abstract: A tractor carries a vertically adjustable frame supporting a horizontal shaft for a supply roll of silt fence fabric. A flat vertical plow blade is mounted on the frame and has a front surface and a rear surface. A thinner flat vertical fin is supported directly behind the plow blade by a horizontal fabric guide bar attached to the frame. The fin has a downwardly and rearwardly curved front surface for receiving an intermediate portion of the fabric directed around the guide bar and for folding an edge portion of the fabric into the slot formed by the plow blade. After the ground is compacted by a tractor wheel, steel rebar stakes are driven into the ground, and the fabric is attached to wood or plastic cap members mounted on the stakes.

Abstract: A construction machine having a device for attaching and detaching a counterweight according to the present invention comprises a lower traveling body; an upper rotating body mounted rotatably on the lower traveling body; the upper rotating body having a support bed standing out from a rear part thereof; and a device for attaching and detaching a counterweight mounted on the support bed. The attaching and detaching device comprises a telescoping device having a lower end pivotally connected in the vicinity of the support bed, a restiform body suspended through a guide portion provided on the telescoping device; and oscillating means for oscillating the telescoping device around the lower end as fulcrum. The oscillating means displaces the telescoping device extended from a substantially vertical attitude to an inclined attitude when the counterweight is detached. According to the present invention, an inclined bed is not required, and locating of the counterweight to the support bed can be done easily.

Abstract: A hydraulic pipe arrangement of a working machine is not in contact with an obstacle and no torsion and no bending are generated. Accordingly, in a hydraulically driven type working machine provided with a boom (1) having a vertical swing supporting point supported at a base end side by a machine frame and a joint connection supporting point in a front end side, an arm (2) connected in a base end side to the joint connection supporting point, a boom driving hydraulic cylinder (6a) hoisting around a hoist supporting point provided in the machine frame so as to drive the boom, an arm driving hydraulic cylinder (7), and a working tool driving hydraulic cylinder (8), a swivel joint mechanism relaying a hydraulic pipe arrangement from a side of the machine frame is provided at a center of at least one of the vertical swing supporting point, the joint connection supporting point and the boom driving hydraulic cylinder hoist supporting point.

Abstract: An arm body of a working machine has a hollow and triangular cross-section. A bucket-connection bracket is jointed to one longitudinal end of an arm body, and an arm cylinder bracket is jointed to another longitudinal end of the arm body, thereby forming an arm. With the triangular cross-sectional structure, the arm body is less prone to deformation under the stress of a load. The improved triangular cross-sectional structure permits the plate thickness of the arm body to be reduced, and the rigidity of the arm body to be increased without mounting a cross-section restraint material in the arm body. The cross-section of the boom will not deform even though the plate thickness is reduced. Therefore, it is possible to reduce the weight of the boom and still prevent deformation of the boom under heavy load.

Abstract: A control system and method of using a control system for a thumb on an excavator allows the thumb to follow a workpiece held in a bucket when the bucket moves. The thumb control circuit is activated by the press of a button and thereafter maintains a constant reduced close fluid pressure of the extend port of the thumb cylinder until the open control is actuated.

Abstract: The invention relates to an improved snow grooming vehicle featuring a multifunction joystick adapted to selectively control a plurality of independent functions of various work implements installed on the snow grooming vehicle. More specifically, the multifunction joystick is adapted to select specific functions of a work implements and apply the movements of the joystick to these specific functions. If a new function is selected, the movements of the joystick are applied to the newly selected function while disabling the previously selected function From a single joystick, the operator may control a wide array of functions of the work implements installed on the snow grooming vehicle.

Abstract: The invention relates to an apparatus and method for utilization of a proximity sensor to control the height adjustment of vehicle-mounted devices for use in clearing snow or debris from a road or runway. One end of a shaft is connected to the broom, while the other end is mounted on top of the broom assembly. A threaded collar on the shaft moves axially in response to change in the height of the broom assembly. A proximity sensor produces and monitors a magnetic field near the central portion of the shaft. Height adjustment of the broom causes the collar to move past the proximity sensor, thereby distorting the magnetic field. The proximity sensor stops the electrical signal which controls the downward movement of the broom assembly. The height selection for the broom assembly is adjusted by turning a nut or ratchet assembly on the end of the shaft.

Abstract: A mast assembly is adapted for attachment to an excavating apparatus such as a loader bucket of a skid steer vehicle such as a BOBCAT. The excavating apparatus includes a rear wall, a pair of side walls, and a bottom. The mast assembly includes a mast, which can be fabricated from any suitable relatively rigid and durable material, such as aluminized steel. The mast includes an upper portion and a lower portion connected by an angled portion angled to maintain the upper portion in an upright vertical position. A laser receiver is secured to the upper portion of the mast with a pair of adjustable securing straps. The laser receiver operates in a known manner to receive laser energy from a laser beacon to facilitate accurate positioning of the excavating apparatus. A first removable securing member, such as a hook arrangement or latch bracket, is affixed to the mast. The hook arrangement can include a pair of hooks which extend through a corresponding number of bores formed in the excavating apparatus.

Abstract: A material handling vehicle is provided which includes a lower truck chassis and an upper material handling structure pivotally supported by the lower chassis, all functions of which vehicle are driven by a single engine. The material handling vehicle is controllable from a main truck cab on the truck chassis or from an upper operator's cab mounted on the upper structure. The single engine provides highway travel power and power to all excavator functions, while the vehicle, including remote travel and implement manipulation capabilities, may be controlled from the upper operator cab. The main engine, when used for over-the-highway travel, powers the driven wheels through a manual transmission in a conventional manner.

Abstract: A material handling vehicle is provided which includes a lower truck chassis and an upper material handling structure pivotally supported by the lower chassis, all functions of which vehicle are driven by a single engine. The material handling vehicle is controllable from a main truck cab on the truck chassis or from an upper operator's cab mounted on the upper structure. The single engine provides highway travel power and power to all excavator functions, while the vehicle, including remote travel and implement manipulation capabilities, may be controlled from the upper operator cab. The main engine, when used for over-the-highway travel, powers the driven wheels through a manual transmission in a conventional manner.

Abstract: When a conventional swivel working vehicle is constructed such that a real part of a swivel body is not extended beyond a traveling device in order to improve an operability at a small site, a balance weight must he significantly increased in weight so as to prevent falling and tumbling of a machine body. In the invention, left and right core metal projections of a crawler are laterally offset from a center line of the crawler and right and left lugs are formed on an outer peripheral surface of the crawler. The lugs are formed to assume the same shape on the right and left sides or laterally symmetrical shapes or occupy the same area on the right and left sides, and to be symmetrically shaped about a center of rotation of the swivel body between the left and right crawlers of the machine body.

Abstract: A tool assembly mountable on the handle of a material working machine generally including a link mountable on the machine handle for pivotal movement about a first axis and connectable to a fluid actuated assembly connected to the machine handle, operable for displacing the link about such first axis, an implement connected to the link for pivotal movement about a second axis, a first fluid actuated assembly operatively interconnecting the link and the implement, a second fluid actuated assembly operatively interconnecting the link and the implement, a first fluid line intercommunicating a base end of the cylinder of the first fluid actuated assembly and one of the base and rod ends of the cylinder of the second fluid actuated assembly, a second fluid line intercommunicating a rod end of the cylinder of the first fluid actuated assembly and the other of the base and rod ends of the cylinder of the second fluid actuated assembly and a valve disposed in one of the fluid lines, operable to be selectively dispose

Abstract: An earthmoving machine wherein a driver's cab and a propulsion device for powering the machine are located on opposite sides of a central lift arm. The propulsion device is provided with a cooling device located over the propulsion device itself.

Abstract: A hood for earthmoving machines, such as a backhoe, includes a top panel and two side panels extending beneath and on opposite sides of the top panel to form a substantially upside down U-shaped shell resting on a frame of the vehicle to close the engine compartment of the backhoe. The side panels extend substantially parallel to a vertical centerline plane of the vehicle and are hinged to the frame of the vehicle to rotate, about an axis of rotation substantially perpendicular to the vertical centerline plane of the vehicle, between an open position in which the side panel is located over the top panel to permit access to the engine compartment, and a closed position in which the side panel is located beneath the top panel to close the engine compartment.

Abstract: An excavator comprises a substructure and a superstructure pivoted on the substructure with an engine compartment and a valve box of the excavator being formed in the superstructure; and at least one fluid tank disposed between the engine compartment and the valve box essentially extending over the width of the superstructure. An excavator includes a first and a second fluid tank abutting each other with one positive and complementary side wall each to provide a particularly simple installation of the tanks in a wedge-like manner while utilizing the room in an optimum manner, for example, in the frame of the superstructure.

Abstract: The invention pertains to construction earth-moving machinery for overhauling of main oil pipelines, gas pipelines, or pipelines for other purposes, namely machines for uncovering pipelines of a broad range of diameters, with trench working much lower than the lower generatrix of the pipeline for digging under it in repair of the pipeline in the trench without its lifting. Furthermore, the invention pertains to operating elements, predominantly of machines for uncovering of pipelines.

Abstract: A trench filler having a generally synclinal front section having a solid top and generally downwardly extending sidewalls, a rear section of unitary construction with the front section, the rear section having a solid top and generally downwardly extending sidewalls that are generally longitudinally parallel to each other, and integral running skids beneath the sidewalls that extend forwardly beyond the front section and having upwardly curled ends wherein dirt located beside a trench is gathered by the front section and released through the rear section back into the trench without substantially disturbing the turf located about the trench.

Abstract: To compact soil, an impact apparatus includes a weight within a steel frame that may be carried by a vehicle mounted backhoe and placed over the surface to be compacted or broken. The weight is lifted and released by a cable. To pull the cable, a hydraulic cylinder pushes one set of pulleys upwardly away from another set with the upper set of pulleys including five pulleys and the lower set including four pulleys to provide a multiplication factor. The end of the cable opposite the end attached to the weight is attached to the movable pulleys, all of which are mounted at an elevation higher than the fixed pulleys so that the pulley assembly, the attached cable end, the hydraulic cylinder ram and piston, and the weight fall downwardly under the force of gravity.

Abstract: A hydraulic excavator includes a cab disposed on a front portion of a revolving upper structure. An internal combustion engine is mounted in a rear portion of the revolving upper structure, and an directional control valve is disposed in the front portion of the revolving upper structure at a position spaced laterally from the cab. The directional control valve is arranged longitudinally of the revolving upper structure. A hydraulic oil tank and a fuel tank for the internal combustion engine are disposed on either side of the directional control valve. By virtue of a space provided between the directional control valve and the cab, transmission of heat and operation noise from the directional control valve to the cab is greatly suppressed.

Abstract: A crane-excavator apparatus and method is provided. More particularly, the present invention relates to a mobile apparatus adaptable for use as a crane and as an excavator, and an associated method. The crane includes a lower crawler adapted for use with an excavator, an upper body adapted for use with an excavator, a boom adapted to engage a crane body, and an adapter for engaging a receptacle of the excavator upper body. Typically, the receptacle would accept an excavator boom. The adaptor and the receptacle are fixedly secured together such that the adaptor defines a connector for receiving the crane boom in the same manner as the crane boom would be accepted by a crane body for providing a range of boom angles comparable to the range of boom angles available to the boom connected to the crane body. The method for adapting an excavator for use as a crane is provided.

Abstract: A snow-plow system having four major features: lighting system, a quick and easy disconnect/connect system, a reactive controlled pressure mechanism for applying a controlled pressure to the bottom edge of the moldboard of the plow, and a simple electric control to activate or de-activate the reactive controlled pressure mechanism. The present invention may be summarized as a snow-plow system that is mounted to a vehicle having a mounting frame by an easy connect and disconnect system connecting to the A-frame of the snow-plow by use of three mounting pins which hold the snow-plow system in place on the mounting frame of the vehicle and thereby rigidly connect the system to the vehicle. A light bar or lighting system also is rigidly mounted to the A-frame of the snow-plow at the mounting pins so that once the position of the lighting system is determined the relative position of the lighting system with respect to the vehicle does not change.

Abstract: An ATV lift handle is provided for an all terrain vehicle having a vertically movable blade at the forward end thereof. The vertical movement of the blade is controlled by a lift handle positioned rearwardly thereof and which is pivotally mounted on a lift handle bracket. The lift handle bracket has a locking pin movably mounted thereon which protrudes outwardly and rearwardly therefrom when in its extended locked position. The locking pin is movable from its extended locked position to a retracted non-locking position against the resiliency of a spring operatively connected thereto. When it is desired to lock the blade in its upper non-working position, the lift handle is pivotally moved rearwardly of the protruding locking pin and is placed in engagement therewith to prevent the lift handle from moving forwardly.

Abstract: A hydraulic circuit system includes a shuttle block, and shuttle valves are arranged and connected within the shuttle block. The maximum pressure in a predetermined operation signal pressure group selected from operation signal pressures generated by pilot operating units is selected to produce a control signal pressure within the shuttle block. The control signal pressure is output to control devices such as a track communicating valve, a swing brake cylinder, and regulators for hydraulic pumps.

Abstract: Construction machines typically utilize hydraulic cylinders to manipulate the linkage that extends between the machine frame and a work implement. In many instances the range of motion of the components creates limited room between the components when they are in their maximum positions. This limited room has prevented the direct attachment of valves to the various hydraulic cylinders. The present invention provides a valve that has a preselected angled configuration that substantially matches a preselected angled configuration of a surrounding frame member. When the linkage is in one of its extreme positions, the two preselected configurations of the valve and the frame member "nest" with one another to prevent contact therebetween, thus allowing the use of the available space.

Abstract: An integrated safe excavation apparatus utilizing supersonic air jets coupled with high flow, pneumatic vacuum transport and a unique separation system to excavate earth and other like material for the purpose of repairing, replacing or installing buried utility lines, remediating contaminated soils, uncovering buried objects containing discarded hazardous waste, safely exposing unexploded ordnance and other like operations.

Abstract: An excavator with a wireless controlled hopper-spreader allows a single operator to strip off topsoil and spread the stripped off soil more or less evenly after a mineable substance such as gravel is removed. The hopper-spreader uses about a fifty foot conveyor and may be totally operated by an operator in the excavator cab. This combination may be both faster and cheaper than a normal dragline operation.

Abstract: The invention provides a working machine of a hydraulic backhoe in which the blade tip force can be increased over a wide range of operations, which has a great blade tip force at the start of excavation, and which can increase working efficiency by avoiding obstacles. For these purposes, a second link pivotally connected to third fulcrums (6, 13) provided in common at a leading end of an arm cylinder (4) and one end of a first link (10) and to a second fulcrum (12) of an arm (2) is a hydraulic correction cylinder (11). A working hydraulic circuit for the arm cylinder (4) and the correction cylinder (11) may constitute a series circuit having a circuit (24) connecting a head side oil chamber (20) of the arm cylinder (4) to a bottom side oil chamber (23) of the correction cylinder (11).

Abstract: The present invention is directed to a protective operator's station from which a machine operator may safely and effectively remotely control the various operations of a machine that may create flying debris. The invention includes a control panel mounted to an adjustable base, such as a tripod with extensible legs. The invention also includes one or more shields to protect the machine operator from flying debris. A substantially transparent shield is provided to protect the upper body and head of a machine operator without substantially impairing the operator's vision. A flexible lower shield or skirt may be provided to protect the lower body of the operator. In an alternative embodiment, the control panel, including one or more shields, may be secured to the body of the machine operator using a harness. The invention also relates to an improved remotely controlled stump cutter having a protective operator's station.

Abstract: The invention relates to a device for handling material, especially soil, the device including a bucket (1) of a machine having a grinding device (2) for the material fitted thereto, the grinding device comprising at least two essentially parallel shafts (3) which are set at a distance from each other and rotatable in synchronization, the shafts having grinding members (4) for the material, whereby the grinding members (4) of two adjacent shafts overlap each other, the bottom of the bucket (1) including an outlet opening (5) for the handled material. The grinding members are provided with numerous discs (4) which are spaced apart from each other on each shaft (3), the peripheral surfaces of the discs comprising projections, whereby a notch is provided between two adjacent projections.

Abstract: An all terrain vehicle having a vertically movable blade at the forward end thereof is described wherein the vertical movement of the blade is controlled by a lift handle positioned rearwardly thereof and which is pivotally mounted on a lift handle bracket. The lift handle has a locking pin mounted thereon which is positioned rearwardly of the rearward end of the lift handle bracket when the blade is in its raised position. When it is desired to lower the blade, the lift handle is pivotally moved with respect to the lift handle bracket to disengage the locking pin with respect to the rear end of a lift handle bracket. A rub block is positioned on the outer surface of the lift handle bracket for engagement with the lift handle to prevent the locking pin from wearing or cutting a groove in the lift handle bracket.

Abstract: A level indicating mechanism for indicating to a machine operator the relative level position of a work machine includes a circular ring magnet and a bullseye level instrument positioned within the ring magnet. A potting material surrounds the level instrument and connects it to the ring magnet. The level indicating mechanism is adapted to be removably secured to portions of the work machine and be visable to the machine operator. The angular orientation of the work machine is adjustable by stabilizing apparatus to bring the work machine to a level position with respect to the ground surface.

Abstract: A bucket for power shovels is disclosed having a first bucket half and a second bucket half. Each bucket half includes a pair of spaced sidewalls and an endwall extending between the sidewalls which forms a scoop. The bucket halves are pivotly secured together so that the scoops face each other and are movable between an open position, in which the scoops face downwardly, and a closed position in which the scoops face each other and form a load carrying chamber. A swiper plate is attached to one sidewall on each side of the bucket. This swiper plate overlaps a portion of the other sidewall on its associated side of the bucket as the bucket halves pivot between a partially closed and a fully closed position.

Abstract: An overhead foxhole cover takes the form of a shallow arch. The shallow a is fabricated from a light weight material and is provided with corrugations running parallel to the plane in which the arch is formed in the cover. The arch is preferably formed in 12 gauge aluminum and is capable of withstanding the blast from an 82 mm mortar. The arch is used by first digging a two-soldier fighting position; placing retaining walls, if needed; placing the cover over the center of the fighting position; placing the bags over the cover to retail a soil cover; and placing 18 inches of soil cover over the sandbagging shallow arch.

Abstract: An improved hydraulic cylinder with a hydraulic impact hammer integrated into the cylinder rodhead of the hydraulic cylinder is provided. The hydraulic hammer is positioned inside a central chamber of the cylinder rodhead such that the impact piston can deliver at least one blow along the longitudinal axis of the cylinder rod to create an additive pulse of force.