Abstract: The present invention relates to a method for producing a polyacrylonitrile-based fiber, wherein the method polymerizes a monomer mixture including an acrylonitrile-based monomer, a carboxylic acid-based comonomer, and an acrylate-based comonomer, wherein the acrylate-based comonomer includes the steps of producing a polyacrylonitrile-based copolymer so as to be included in an amount of 4 to 20 parts by weight based on 100 parts by weight of the monomer mixture, fiberizing the polyacrylonitrile-based copolymer, oxidizing and stabilizing the fiberized polyacrylonitrile-based copolymer, which may control the oxidation stabilization reaction, particularly the cyclization reaction. Accordingly, the energy consumption of the oxidation stabilization reaction may be reduced, economical efficiency of the production of polyacrylonitrile-based fiber may be obtained, and the physical and mechanical properties of the carbon fiber may be improved.

Abstract: A drawing apparatus (4) for air spinning machines with multiple feeds, comprising: at least a first and a second introducer element (8,12), independent of each other, so as to be able to feed simultaneously at least two separate slivers (N1, N2) of textile fiber, an air spinning device (16) suitable to spin said slivers (N1, N2) of textile fiber, a drawing device (24) placed.

Abstract: A scaffold may comprise a first polymeric electrospun fiber comprising a first material having a first degradation rate, and a second polymeric electrospun fiber comprising a second material having a second degradation rate different from the first degradation rate. The first degradation rate may substantially correspond to a cell infiltration rate, and the second degradation rate may be slower than the first degradation rate. Such a scaffold may be manufactured by electrospinning a first polymer fiber having a first degradation rate by ejecting a first polymer solution from a first polymer injection system onto a mandrel, and electrospinning a second polymer fiber having a second degradation rate different from the first degradation rate by ejecting a second polymer solution from a second polymer injection system onto a mandrel. Wound healing may be improved by applying such a scaffold to a portion of a wound.

Abstract: An aerodynamic nonwoven forming device (2) for a fibrous nonwoven (10), the nonwoven forming device (2) having a discharge region (6) for fibers, in which the fibrous nonwoven (10) is aerodynamically formed. The nonwoven forming device (2) is incorporated in the discharge region (6) in a furnace (4). The nonwoven forming device (2) has a fiber support (5) which emits a fiber stream (12) in the discharge region (6) into a free area (31) within the furnace (4). The fiber support (5) spins off the fiber stream (12) on a detachment area (22) into the free area (31) in free flight.

Abstract: Disclosed is a guiding apparatus for use with a machine to facilitate performing an action along a self-guided path on a substrate. The guiding apparatus may include a support member configured to be attached to at least a portion of the machine. Further, the guiding apparatus may include one or more of lighting units, optical sensors, controllers, and user interface components, mounted on the support member, configured to identify an object, obtain position of the object on a substrate and perform an action along a self-guided path in association with that object on the substrate.

Abstract: Dual-configuration fabric frame for a maneuverable sewing machine. In some embodiments, a dual-configuration fabric frame for a maneuverable sewing machine may include a left side rail, a right side rail, a front rail, a rear rail, a quilt-backing pole including a ratchet mechanism, a take-up pole including a ratchet mechanism, a hoop frame configuration, and a suspension frame configuration. The hoop frame configuration may support a relatively wide fabric clamped thereto that flows from inside boundaries of a working area to outside the boundaries of the working area. The suspension frame configuration may support a relatively narrow fabric that flows from being spooled on the quilt-backing pole, through the working area, to being spooled on the take-up pole.

Abstract: A laundry treatment machine may include an outer tub having an opening at a top through which laundry is inserted. The outer tub may contain wash water for washing the laundry. An inner tub may be rotatably provided inside the outer tub. A pulsator may be rotatably provided at a bottom of the inner tub to generate a current or flow of water flowing at a lower part of the inner tub. A water current generating protrusion that protrudes inward from a peripheral surface of the inner tub and extends upward from a bottom end of the inner tub may generate a current or flow of water flowing along an upper part of the inner tub.

Abstract: A method of controlling a laundry treatment apparatus includes: determining whether bubbles have been generated in a tub of the laundry treatment apparatus in a state in which a second washing apparatus of the laundry treatment apparatus is operated based on a sequence of operations; and based on a determination that bubbles have been generated, reducing bubbles by (i) adding at least one first operation to the sequence of operations or (ii) replacing at least one second operation of the sequence of operations.

Abstract: A washing machine includes a local control mode and a remote control mode implemented through an intelligent terminal. The washing machine authorizes/forbids the intelligent terminal to remotely control the washing machine according to state information of the washing machine after receiving a remote control request transmitted by a local machine or the intelligent terminal. When the state information of the washing machine conforms to a condition for remote control, the washing machine authorizes the intelligent terminal to remotely control the washing machine. When the state information of the washing machine does not conform to the condition for remote control, the washing machine forbids the intelligent terminal to remotely control the washing machine. The control method is applicable to the field of Internet of Things washing machines, and may effectively guarantee the safety of the Internet of Things washing machine in the remote control and avoid occurrence of safety accidents.

Abstract: Disclosed herein is a washing machine. The washing machine includes a main body having a laundry inlet on a front surface portion of the main body, a tub provided inside the main body for storing washing water, a drum rotatably provided in the tub, a pulsator provided inside the drum and configured to be rotated separately from the drum, and a driving device configured to provide power to the drum and the pulsator, wherein no extra structure is mounted on the inner surface of the drum.

Abstract: A household appliance support and a household appliance are disclosed. The household appliance support comprises: a hydraulic plate; a sheath, being fixedly connected with the hydraulic plate; a regulating foot, being arranged in the sheath and axially movable relative to the sheath and provided with a supporting end part in supportable contact with a supporting surface; an accommodation chamber, being formed by the hydraulic plate, the sheath and the regulating foot; a hydraulic medium, being accommodated in the accommodation chamber in a sealed manner, wherein under the effect of a pressure, the hydraulic medium is compressed or expanded to drive the regulating foot to move axially in the sheath for leveling; and a damping element, being embedded and mounted on the supporting end part of the regulating foot, to increase the supporting damping force between the regulating foot and the supporting surface.

Abstract: A laundry apparatus includes a drum rotatable on a shaft and including at least one predetermined region made of metal; a tub surrounding the drum; an inductor provided on the tub and heating the drum by generating an electromagnetic field; and an air passage duct including a first duct provided as a passage for exhausting air outside the tub, a second duct provided as a passage for sucking air into the tub, and a fan for generating air flow, wherein the air drawn into the tub via the second duct is supplied to an internal space of the drum via a penetrating hole provided in a circumferential surface of the drum by the fan and then exhausted to the first duct after passing through a drum opening provided in a front portion of the drum.

Abstract: The disclosure relates to a draining structure of a washing machine. An inner drum is installed in a housing of the washing machine, a drain port is arranged on the inner drum, and a drain valve is installed at the drain port; the washing machine is further provided with a positioning and locking mechanism for rotating the inner drum to a fixed drainage position and locking the inner drum; and the washing machine is provided with an opening mechanism of a valve core for opening the drain valve after the inner drum rotating to the fixed drainage position. When the washing machine is in a draining state, the drain valve is opened after the inner drum rotating to the fixed drainage position to discharge the washing water in the inner drum.

Abstract: A water transmission device and a washing machine including the same. The washing machine includes a water transmission device configured to discharge water in a washing tub, wherein the water transmission device includes a filter case which is disposed under the washing tub and accommodates a filter, and into which the water in the washing tub is introduced, a pump case connected to the filter case and accommodating an impeller configured to suction the water in the filter case and discharge, a motor configured to rotate the impeller, a suction hole through which a side portion of the pump case facing a center of the impeller and a side portion of the filter case, and an outlet which is open downward from a lowest end inside the pump case and communicates with a water discharge pipeline.

Abstract: A tub of a washing machine includes: a first case and a second case welded to each other; a first coupling surface formed along a circumference of the first case facing the second case; a second coupling surface formed along a circumference of the second case facing the first case and bonded to the first coupling surface; and a coupling protrusion that protrudes along the first coupling surface and includes a protruding end portion welded to the second coupling surface. The coupling protrusion includes: a main coupling protrusion protruding along the first coupling surface; and an auxiliary coupling protrusion protruding along the first coupling surface and outwardly spaced apart from the main coupling protrusion. Further, an opening for communicating a space between the auxiliary coupling protrusion and the main coupling protrusion to an outside of the tub is defined in a bottom of the tub.

Abstract: A washing machine includes a tub and a drum. The tub includes a first case and a second case welded to each other; a first coupling surface extending along a circumference of the first case and facing the second case; a second coupling surface extending along a circumference of the second case and coupled to the first coupling surface; and a coupling protrusion that protrudes from the first coupling surface toward the second coupling surface and that includes a protruding end portion welded to the second coupling surface. The coupling protrusion includes: a main coupling protrusion that extends along the first coupling surface; and an auxiliary coupling protrusion that is disposed radially outward of the main coupling protrusion and spaced apart from the main coupling protrusion and that defines a discharge opening configured to discharge washing water entered between the main coupling protrusion and the auxiliary coupling protrusion.

Abstract: Disclosed herein is a clothes handling apparatus that allows a user to easily change a door opening direction. The clothes handling apparatus includes a cabinet having an opening formed in a front surface thereof, a door configured to open or close the opening, and a door lock including a first door latch installed at a right side of the opening and provided to lock the door and a second door latch installed at a left side of the opening and provided to lock the door. The door may be rotatably installed at the left side of the opening or rotatably installed at the right side of the opening, and the first door latch or the second door latch may lock the door depending on whether the door is installed at the left side or the right side of the opening.

Abstract: A bearing assembly capable of supporting a shaft of a drum and a clothes dryer having the same. The bearing assembly includes a bearing configured to rotatably support the shaft, and a centering guide formed in an annular shape and in which the bearing is installed, and the bearing assembly having a centering function may be simply manufactured using a bearing that is generally used.

Abstract: The present disclosure provides a pants seam clamping structure for novel handheld garment steamer. The structure comprises an auxiliary steam outlet for ironing pants seams, a pants clamping plate for pressing the garments, and a steam generator and a main steam outlet, both of which are arranged in the handheld garment steamer. The auxiliary steam outlet comprises a vaporization cover, a pants clamping tube connector provided with an inner hole, a sealing plug provided with an inner hole, and a top cover of the garment steamer. The pants clamping plate comprises a rotary shaft bracket, a rotary shaft, a torsion spring used for providing a torsional force, and a pressing plate used for pressing and fixing the garment. The present disclosure provides independent auxiliary steam outlet and steam channel which has good sealing performance and stable structure.

Abstract: The waterproof and permeable cloth includes a permeable waterproof layer, a first permeable coating layer attached to an inner side of the permeable waterproof layer, a second permeable coating layer attached to an outer side of the permeable waterproof layer, a moisture-absorbing permeable waterproof layer attached to an inner side of the first permeable coating layer, and a cloth layer attached to an outer side of the second permeable coating layer. The moisture-absorbing permeable waterproof layer includes multiple grid cells cascaded together. Each grid cell has an aperture that is smaller than outside water molecules but is greater than inside moist molecules. Therefore, outside water molecules cannot permeate through the grid cells inside, but inside moist molecules may be expelled outside. The cloth therefore is waterproof but also absorbent and permeable.

Abstract: The invention relates to an environmentally friendly production method for a sheet-like article that does not use an organic solvent in the production process and provides a sheet-like article that compares favorably in terms of a uniform feel with artificial leather products produced from an organic solvent based polyurethane and in particular has good surface quality and texture and also provides a production method therefor. The present invention aims to provide a sheet-like article comprising a fibrous base material formed of ultrafine fibers and/or ultrafine fiber bundles provided with, as a binder, a polymer elastomer having a hydrophilic group, any thickness-directional cross section of the sheet-like article containing regions occupied by the polymer elastomer, the regions including independent regions each with a cross-sectional area of 50 ?m2 or more, the total area of the independent regions accounting for 0.1% or more and 5.

Abstract: According to the present invention, there is provided a fabric substrate for mounting a light emitting element. The fabric substrate includes a fabric layer including at least one fabric, a stress buffer layer that is disposed on the fabric layer and minimizes an occurrence of physical strain and stress caused by bending the fabric layer, and a flattening layer that is disposed on the stress buffer layer and provides a flat surface to allow a light emitting element to operate.

Abstract: Hot melt sequins and methods of applying these sequins are disclosed. A method of attaching two components includes stitching a hot melt sequin to one of the components and heating the hot melt sequin to bond the two components together. Sequins can also be applied to articles to create structural elements such as heel counters, toe covers, and lace cages. Sequins can be applied in 1D, 2D, and 3D patterns as well as in dispersive patterns. Sequins can be applied to vary the abrasion properties of a portion of an article.

Abstract: A web manufacturing apparatus includes a defibration section that includes a rotating blade and is configured to defibrate a material containing fiber, a detection section configured to detect an electric charge amount of a defibrated material obtained by the defibration section, and a control section configured to control operation of the defibration section. The control section includes a first mode in which a revolution speed of the rotating blade is set based on a detection result of the detection section.

Abstract: In this method of producing recycled fibers by removing superabsorbent polymers from fibers containing superabsorbent polymers, recycled fibers are efficiently produced while the superabsorbent polymers are suitably removed from the fibers. This method produces recycled fibers from a mixture of fibers and superabsorbent polymers. This method involves a continuous treatment step (S36) in which, in a treatment tank (31) having a treatment solution that can dissolve superabsorbent polymers, superabsorbent polymers are dissolved while a mixed solution (51) that contains water and fibers containing superabsorbent polymers is continuously supplied at a first flow rate, and the treatment solution (52) containing the removed fibers is continuously discharged to outside of the treatment tank at a second flow rate.

Abstract: A first refining disc (5) for a defibrator (1) for refining fibrous material, adapted to receive a flow of incoming fibrous material (7) from a feed screw (3a) through a material inlet opening (4) arranged in the first refining disc (5), is provided with at least one steam evacuating channel (21) comprising at least one steam inlet opening (22) arranged on a side of the first refining disc (5) adapted to face a second refining disc (6), and at least one steam outlet opening (23) arranged on a side of the first refining disc (5) adapted to face away from the second refining disc (6). The at least one steam outlet opening (23) is arranged centrally of the at least one steam inlet opening (22) with respect to the center of the first refining disc (5), and centrally of a position where the flow of incoming material (7) is to be received into the first refining disc (5) from the feed screw (3a), with respect to the center of the first refining disc (5).

Abstract: A paperboard structure including a paperboard substrate having a first major side and a second major side, a barrier coating layer on the first major side of the paperboard substrate, a top coat on the first major side of the paperboard substrate, wherein the barrier coating layer is positioned between the paperboard substrate and the top coat, and the paperboard structure providing a blocking rate of less than 2 at 50° C. and at 60 psi in a 24-hour period.

Abstract: A softener composition for use in the manufacture of paper includes a softener and an acidic material, wherein the softener composition has a relative acidity (RA) value of more than 0.05.

Abstract: A method of manufacturing a security paper is presented. The method comprises: preparing a composition A containing a mixture of softwood and hardwood pulp, and preparing a mixture ? of a refined pulp and magnetic wires having predetermined magnetic properties; preparing a composition C by blending the mixture B and the composition A; diluting the composition C, and forming a pulp single layer D including the magnetic wires at a predetermined density; removing moisture from the pulp single layer D; forming at least one protective coating layer on at least one side of the paper; and calendering the paper, thereby obtaining a security paper structure with the magnetic wires fully embedded in the pulp single layer.

Abstract: An antibacterial absorbent towel made from fruit peels. The towel includes fruit peels that contain Vitamin C, citric acid, and cellulose. Vitamin C and citric acid demonstrate antibacterial properties, and cellulose possesses water-absorbing qualities. The towel is easy to make and easy to use and increases access to hygiene in rural and poorer regions that lack access to expensive hygiene products. At the same time, the towel reduces paper wastage by utilizing typically discarded fruit peels. Due to its makeup, the towel is reusable and easily composted. Based on these factors, the towel is environmentally friendly unlike prior art. This towel aims to solve the issues of inaccessible hygiene, paper wastage, and peel wastage under one solution.

Abstract: The present invention relates to a road paving method enabling one to provide an asphalt paving material layer in which both excellent stability and stress relaxation can be made compatible with each other, the method including Step 1: a step of mixing asphalt, a thermoplastic elastomer, a polyester, and an aggregate to obtain an asphalt mixture, and Step 2: a step of laying the asphalt mixture obtained in Step 1 on a road, thereby forming an asphalt paving material layer, wherein the polyester has a softening point of 90° C. or higher and 140° C. or lower and a glass transition point of 40° C. or higher and 80° C. or lower, and a ratio of the polyester is more than 17 parts by mass and 50 parts by mass or less based on 100 parts by mass of the asphalt.

Abstract: This invention is in the field of asphalt construction or pavement applications, compositions and methods of use thereof. The invention also relates to methods of using the composition to surface seal and as a penetrating preservation agent to extend the life of the asphalt construction or pavement. The present invention relates to asphalt repair compositions, sealing or coating compositions, and methods for coating structures such as roadways, such as asphaltic surfaces to improve structure lifetime.

Abstract: A dowel placement system including a fastener configured to be engageable with a form, and a radially compressible bushing coupled to the fastener and defining an adjustable outer diameter. The system further includes an elongate dowel sleeve having opposed proximal and distal end portions, and an axial opening having an inner diameter and extending into the dowel sleeve from the proximal end portion to the distal end portion. The bushing is insertable within the axial opening of the dowel sleeve, and the bushing and dowel sleeve are configured such that insertion of the bushing within the dowel sleeve causes the outer diameter of the bushing to compress and conform to the inner diameter of the dowel sleeve and to create a friction force between the bushing and the dowel sleeve to mitigate movement of the dowel sleeve relative to the bushing during formation of the concrete structure.

Abstract: The described systems can include any suitable component that allows them to move material (e.g., gravel and/or another bulk material), under at least a portion of a frame or other portion of a vehicle, and from one portion of the vehicle to another portion. In some cases, the systems include a chip spreader that includes a motorized vehicle and a material transfer device that is configured to move the material from a first end of the motorized vehicle to a second end of the motorized vehicle. In some cases, the material transfer device is disposed below an axle, frame, drivetrain, radiator, and/or other component of an undercarriage of the motorized vehicle. In some cases, the material transfer device includes one or more conveyors, augers, vibrators, gravity slides, and/or pneumatic systems that are configured to move the material. Other implementations are described.

Abstract: A screed assembly associated with a machine includes a screed disposed at a rear end of the machine and at least one control panel assembly coupled to the screed. The at least one control panel assembly includes a control panel including a recess and a support structure adapted to be removably coupled with the control panel. The support structure includes a first structure defining a first axis. The first structure is movable along the first axis and rotatable about the first axis. The support structure also includes a second structure movably coupled to the first structure. The second structure defines a second axis substantially parallel to the first axis. The second structure is rotatable about the second axis and includes a locking member adapted to be slidably received within the recess of the control panel for removably coupling the control panel with the support structure.

Abstract: The self-propelled high-performance shot-peening machine combined with a scarifying machine, for the treatment of coatings surfaces of bituminous conglomerate, asphalt, concrete or metal, is composed of a shot-peening unit (A-A), a suction, filtering, separation and storage unit (B-B), a scarifying unit (C-C) and a mechanic-magnetic unit (d-D) coupled together. It comes typically to solve the problem of the removal of the new typologies of “drop” or “lamellar” road markings, with subsequent regeneration of the macro and micro roughness of the road coating, subjecting the surface to be treated to two treatments—integrated milling and shot-peening—by a single pass, adapting itself to the road profile and guaranteeing to remove only the protruding part of the road markings, subsequently immediately regenerating the roughness and microroughness of said surface, noticeably reducing the critical factor of the working time, eliminating the possibility of error in the application of the treatment.

Abstract: A steering mechanism and guidance system for a milling attachment device provides steering capability without impeding cutting depth control. The steering mechanism has at least one wheel that is rotated by an actuating mechanism such as an extending cylinder, synchronized actuators, or the like. The steering mechanism may be integrated with depth control by using a parallelogrammic structure with pivot points to assist in the depth control or may operate independent of and without impeding depth control.

Abstract: A canopy for a passenger boarding bridge, includes a fixed frame, a flexible frame configured to align to a fuselage of a plane or a ship, a bellow roof clamped between the fixed frame and the flexible frame, and a suspension system. The suspension system includes a first cylinder actuator, and a second cylinder actuator, wherein the first cylinder actuator is configured to provide a pushing force in a first pushing direction and the second cylinder actuator is configured to provide a pushing force in a second pushing direction, wherein the first cylinder actuator and the second cylinder actuator are connected in series and the first pushing direction is opposite to the second pushing direction.

Abstract: A barrier stand for a barrier comprising a cable is described. The barrier stand has an elongate member and a hollow top section, and at least one slot extending downwardly from the top of the top section, the slot being adapted to receive a cable. A clamping device is located in the hollow section. The clamping device defines a shaft that extends through a bore defined by a guide of the barrier stand. The shaft and guide enable sliding movement of the clamping device towards a clamping position for clamping a cable securely to the barrier stand, and away from the clamping position to release the cable from the barrier stand. The guide is secured to the elongate member thereby maintaining alignment between the clamping device and the elongate member during movement of the clamping device towards and away from the clamping position.

Abstract: In an example, a system of road barriers includes a corner barrier segment, which includes a central member, a first member extending from the central member, and second member extending from the central member. The first member and the second member are configured to rotate about an axis of the central member relative to each other. The system also includes a first barrier segment coupled to the first member of the corner barrier segment via fasteners on both the first barrier segment and the first member. The system further includes a second barrier segment coupled to the second member of the corner barrier segment via fasteners on both the second barrier segment and the second member.

Abstract: Connection apparatus is provided for connecting two or more items together in use. The connection apparatus comprises a body portion, engagement means provided on or associated with the body portion to allow connection of the body portion to a first item in use, and attachment means provided on or associated with the body portion to allow attachment of the body portion to at least a second item in use. The attachment means includes at least one pin or locking member for removable location with an aperture, recess and/or channel provided on or associated with the at least second item.

Abstract: The present invention relates to street sweeper. According to a first aspect of the invention, different mechanisms are disclosed for controlling the movement of the brush-holder arms in a horizontal plane, while also damping side and front impacts. According to a second aspect, a sweeper is disclosed, in which the movement of the brush-holder arms (3) in a vertical plane is imparted by a set of four profile members, arranged in two pairs which each forms a deformable parallelogram, wherein the deformation of the parallelogram is actuated by a jack (25) and the own weight of the sweeping arm. The jack is configured to remain below the upper profile members (11) of the two pairs when the brush-holder arm is raised to its maximum height. According to a third aspect, the suction turbine (103) is arranged in such a way that load losses are reduced during the operation of the sweeper.

Abstract: There is described a module for an underwater structure. The module comprises a plurality of walls defining a cavity configured such that at least two walls of said plurality of walls confront one another to provide respective stack support surfaces for supporting said module, said walls are substantially parallel to form complementary stack surfaces, such that one stack surface may rest on a surface and the other complementary stack surface provides a rest surface for another module. Two or more walls of said plurality of walls each comprise an aperture providing a conduit through each two or more walls to said cavity, respective apertures of said two or more walls and said cavity configured to provide a water flow path into, through and from said cavity. The water flow path may be considered unconstrained or at least substantially unconstrained in that water ma flow through the apertures and cavity without deviation or interruption other than by the module or cavity walls.

Abstract: Apparatus for removing debris from channeled water that includes a bar screen assembly. The assembly includes a plurality of spaced apart screen bars, each bar having an upstream edge and a downstream edge and distal ends to which U-shaped clips are attached. Each of the clips has a bar engaging portion and a cross member engaging portion that attaches to an associated cross member. The clips operate to space the trailing edge of the screen bars a predetermined distance from associated cross members and allow easy replacement of a bar. A continuous conveyor carries a plurality of rakes having a plurality of spaced apart tines which are adapted to fit between the screen bars as the rake is moved along the bars by the conveyor. The tines of the rake have a length that substantially spans the distance between the leading edge and trailing edge of a bar, so that tips of the rake tines extend to at least the trailing edge of an associated bar.

Abstract: Disclosed is a nesting element for use in a hollow pile. The nesting element is configured to be retained at an opening defined in a wall of the pile. The nesting element comprises a surface that is configured such that, in use, the surface substantially conforms to an internal profile at a transverse cross-section of the pile. Also disclosed are a pile system that employs one or more nesting elements in one or more respective piles, and an installation system for installing the pile system into the ground. Additionally, a method of constructing a retaining wall using the pile system and installation system is disclosed.

Abstract: A closed-loop feedback-control system for a screw anchor driving machine that uses a programmable logic controller (PLC) and array of sensors providing real-time data to control an automated screw anchor driving operation relying on a rotary driver, a crowd motor applying downforce to the rotary driver and a tool driver extending a tool through the rotary driver and screw anchor to drive screw anchors to a target depth.

Abstract: A tensionless concrete pier foundation for supporting a tower and a method of constructing the same is provided, the foundation having an outer CMP and an inner CMP with an annular space therebetween in which a plurality of sleeved tower anchor bolts are embedded, at least the outer CMP having an upper edge that is flush with the top of the foundation after the tower has been installed. A method of plumbing a tower anchor bolt cage using a bolt alignment ring is also provided that includes coupling the upper ends of the CMPs together with lateral spacing bolts that extend across the annular space. The tower anchor bolt cage is suspended from the lateral spacing bolts by the bolt alignment ring, and the lateral spacing bolts are shimmed on a low side as necessary for leveling the alignment ring and plumbing the bolt cage, before concrete pour.

Abstract: A quick-change coupler device for coupling and uncoupling implement attachments to and from construction site equipment includes a carrier assembly, first receiving members disposed on one side of the carrier assembly for receiving a first coupling member, second receiving members disposed on the other side of the carrier assembly for receiving a second coupling member, a locking unit dedicated to the second receiving members and capable of moving between a release position and a locking position, and a catch unit disposed on the carrier assembly for catching the implement attachment. To simplify coupling and to ensure an increased safety level, the catch unit comprises at least one catch hook swivel-mounted on the carrier assembly and a control unit controls swivel of the catch hook between a folded-in and a folded-out position. The control unit is actuated by the first coupling member and is actuated independently of the locking unit.

Abstract: A hydraulic system includes a hydraulic pump, a first hydraulic actuator, a second hydraulic actuator, a first control valve to control the first hydraulic actuator, a second control valve connected to a downstream side of the first control valve and configured to control the second hydraulic actuator, a return fluid tube in which return fluid discharged from the first hydraulic actuator flows, the return fluid tube coupling the first control valve and the first hydraulic actuator, an internal fluid tube arranged in the first control valve and connected to the return fluid tube, an external fluid tube connected to the internal fluid tube, the external fluid tube coupling the first control valve and the second control valve, a branched fluid tube branched from the external fluid tube and connected to a discharge fluid tube, and a pressurizing portion provided to the discharge fluid tube.

Abstract: Hydro excavation vacuum apparatus that process spoil material onboard the apparatus by separating water from the cut earthen material are disclosed.