Abstract: A fabric for an air-bag comprising interwoven sets of warp and weft yarns, wherein the yarns of one of the least 1.5, and the yarns of the other set of yarns are not tape-like and have a width-depth ratio less than 1.5.

Abstract: The invention provides a high-strength fabric and a manufacturing method thereof. The manufacturing method includes: connecting at least one group of single yarns according to a certain law to manufacture a fabric body, wherein the high-strength fabric includes at least the fabric body, and each single yarn is manufactured by converging or converging and twisting an ultra-high molecular weight polyethylene thin film or strip. The high-strength fabric has the advantages of good structural integrity, simple manufacturing process, high production efficiency, high strength, high strength utilization ratio, light weight, no pollution and good bulletproof performance.

Abstract: The present disclosure describes a knitted component configured to stretch. The knitted component includes a knit element that includes an auxetic portion configured to move between a first position and a second position as the knitted component stretches. The knitted component also includes a tensile strand formed with the knit element. The auxetic portion has an area when in the first position. The tensile strand engages the knit element proximate the auxetic portion. The tensile strand is configured to be manipulated for selectively changing the area of the auxetic portion to vary a stretch characteristic of the knitted component.

Abstract: A long arm quilt and lockstitch machine assembly (1) having a framework having two rail tracks, disposed orthogonally on top of one another, wherein the sewing machine (19) is disposed so as to be displaceable on the rail track lying above. The connections between the drive belt (33, 43) to which the rail track (9) lying below and the sewing machine (19) are connected by way of an electronic control system via drive motors, include overload couplings which in the case of overloading by body parts or items of clothing that are caught between the movable elements separate the movable elements from the drive belts. Advantageously, the overload coupling is simultaneously a connection element and in the case of overloading separates the connection between the elements.

Abstract: A machine for dyeing reels of yarn and textile fibers wound on packages, including: a structure delimiting a chamber partially or fully filled with a dyeing fluid; a support immersed in the dyeing fluid; a plurality of reel-holder rods that communicate via the fluid with the support to allow the dyeing fluid to pass the support; first and second recirculation mechanisms associated with the structure, to initiate transit of the dyeing fluid in accordance with at least one set route is described. The first recirculation mechanism interposed between the chamber and the support induces the dyeing fluid to pass through the reel-holder rods and includes a pump and respective selection mechanisms to intermittently channel the dyeing fluid through the support, the reel-holder rods, and the respective reels. The second recirculation mechanism induces transit of the dyeing fluid within the chamber in accordance with at least one closed route.

Abstract: A laundry washing and/or drying appliance (100) includes a cabinet (3) containing a rotatable drum (2) that can be loaded/unloaded with laundry. The cabinet (3) is provided with a loading/unloading opening (200) for accessing said drum (2). A door locking device (1) is fixed inside the cabinet (3) and is accessible from outside the cabinet (3). The door locking device (1) includes a support housing (23) provided with an opening (22) for the introduction of a hook member (21). The opening (22) is accessible from outside the cabinet (3). A door (4) for closing said loading/unloading opening (200) is movably connected to the cabinet (3) and includes the hook member (21) adapted to engage with the door locking device (1).

Abstract: An automatic washing machine can be operated in accordance with a selected wash cycle by receiving an input indicative of a concentration of a wash aid prior to a dispensing of the wash aid into at least one of a tub and a drum, and selecting an operating parameter of the automatic washing machine in response to the determined concentration.

Abstract: A vibration limiter of a washing machine is disclosed. The vibration limiter includes a housing installed at one of a cabinet and a tub, a contact plate disposed within the housing such that the contact plate comes into contact with the other of the cabinet and the tub when the tub vibrates, a spring for elastically supporting the contact plate, a rotating member rotatable by at least one of the spring and the contact plate, and an oil damper engaged with the rotating member. The oil damper complementarily acts with the spring, to effectively absorb vibration. Accordingly, it is possible to reduce the size of the spring and to secure enhanced reliability even after prolonged use.

Abstract: A washing machine having a ball balancer to reduce vibration generated during dehydrating process and a vibration controlling method thereof are disclosed. In a washing machine having a ball balancer, a dehydrating process starts while residual water having a preset water level remains in the tub without draining water completely when entering the dehydrating process, and the quantity of residual water is set differently according to eccentricity so that excessive vibrations of a tub may be reduced using the weight of the residual water while passing through a resonant point. Speed of a motor is maintained at a preset speed lower than the resonant point for a preset time to release balls in the ball balancer so that excessive vibrations of the tub generated by concentrated balls and unbalanced laundry may be surely reduced. After passing through the resonant point, the residual water is drained to reduce drain noise and to prevent delay of dehydrating time.

Abstract: A vertical axis washing machine appliance includes a door pivotably mounted to a cabinet. The door includes a frame, an axle and a lever arm. The axle is fixed to the frame, and the lever arm is fixed to the axle. A door lock assembly is operable to lock the door in a closed position. The door lock assembly includes a latch and an actuator that is operable to move the latch between an engaged position and a disengaged position. The latch is engaged with the lever arm of the door when the latch is in the engaged position.

Abstract: A device for sensing the electrical conductivity of a liquid, particularly that of the washing bath in a washing machine, including an electrically insulating supporting casing through which first and second electrodes intended to contact the washing bath extend to the outside, electrical power supply and signal acquisition and processing circuit devices housed at least in part in the supporting casing and coupled to the electrodes, and signal coupling and galvanic isolation devices, interposed between these circuit devices and the electrodes and also housed in the casing, and including at least a first and a second capacitor, each of which is interconnected in series between one of the electrodes and a corresponding terminal of the circuit.

Abstract: An apparatus for sealing the drum of a clothes dryer comprising an attachment with a recess sized to receive the lip of a dryer drum to mount the seal about the lip and a seal element abutting a corresponding front or rear bulkhead wherein the length of the seal is such that when in place there remains an intervening gap in which a spacer capable of changing shape is located allowing the seal to expand and contract with thermal variations.

Abstract: An object of the present invention is to provide a fiber treatment agent that is capable of forming on fibers a film that has excellent water resistance and excellent adhesion to a matrix resin. The present invention provides a fiber treatment agent comprising an aqueous medium, a water-insoluble polyamide dispersed in the aqueous medium, and a water-soluble polyamide that is present in an amount of 2 to 50 parts by mass per 100 parts by mass of the water-insoluble polyamide.

Abstract: The invention provides a process for preparing dyed, polypropylene-based fibers. Polypropylene having a Melt Flow Index of 45 or less is combined with an additive blend to provide the polypropylene-based polymer composition for forming into fibers. The additive blend is a terpolymer of ethylene, acrylic or methacrylic ester and maleic anhydride or glycidyl methacrylate combined with an amine-terminated polyamide, in weight ratio 3:1 to 1:1. Fatty acid monoglyceride may also be used in the polymer composition to further improve dyeability. The polypropylene-based fibers are readily dyeable by contacting the fibers with an aqueous dispersion of a disperse dye, to provide fibers with high color intensity (deep hues) and high dye substantivity and color fastness, without the need to employ temperatures in excess of the atmospheric pressure boiling point of the dye dispersion.

Abstract: Biomass feedstocks (e.g., plant biomass, animal biomass, and municipal waste biomass) are processed to produce useful products, such as fuels. For example, novel systems, methods and equipment for conveying and/or cooling treated biomass are described.

Abstract: A drying roller includes at least a cylindrical cylinder shell, two caps which are attached to both sides of the cylinder shell, and two journals which are indirectly fastened to the caps by way of a hollow shaft which is connected to the caps or are directly fastened to the caps, wherein the cylinder shell and the caps are welded to one another by way of an annular weld seam. The weld seam has a joint having at least two mutually opposite and parallel flange regions which are mutually spaced apart. A method for manufacturing a drying roller is also described.

Abstract: A sheet material includes 30-70 wt. % of aramid pulp, 30-70 wt. % of a fire-retardant short fiber material selected from para-aramid, glass fibers, carbon fibers, and PEEK (polyether etherketone), and 0.5-15 wt. % of a polymer binder, wherein the sheet material is a non-woven sheet material having an areal weight of 10-70 g/m2. The sheet material is soft, pliable, and light weight. It can be applied as backing onto upholstery material without detrimentally affecting the properties thereof. At the same time, the sheet material has very good fire-retardant properties.

Abstract: According to an aspect, the present embodiments may be associated with a wet-laid, nonwoven material including high temperature refractory fibers and thermoplastic fibers formed into the nonwoven material using a wet-laid process. In an embodiment, a fluoropolymer is included in the nonwoven material. In an embodiment, the refractory fibers are at least partially cleaned of shot and latex binder or binder fiber is eliminated or at least substantially reduced.

Abstract: An artificial paver comprises a physical member adapted to have a structure shape of a paver and located on the top surface of a paving area. The physical member may be made of a two-component polyurethane material, and the two-component material may be formulated to characterize the artificial paver to be softer than a stone or concrete paving object and to exhibit higher shock absorbing properties than the stone or concrete paving object. A method for manufacturing the artificial paver is also contemplated. The method may comprise pouring the two-component polyurethane material into molds, allowing the two-component polyurethane material in the molds to cure, demolding the cured two-component polyurethane material, and applying an UV stable polyurethane and slip-resistant coating to a surface of the demolded two-component polyurethane material.

Abstract: The invention provides a riding surface formed of a mixture of sand with stone fibers.

Abstract: An artificial turf field system is provided. The system may include a plurality of synthetic turf strands attached to a backing layer and an infill material positioned between the synthetic turf stands. The infill material may include a plurality of porous particles. A sub-layer may be included beneath the backing layer, and may be formed of a resilient material. A support layer may be included beneath the sub-layer, and may include materials configured for drainage. The porous particles of the infill material may include porous ceramic particles and the sub-layer may include rubber. The porous particles may be at least partially coated, for example, by a polymer coating. The infill material may be free of sand and/or crumb rubber.

Abstract: A method and apparatus for filtering point cloud data obtained using a plurality of sensors generates data representative of a surface and for use with a specific type of sensor. The filtering allows certain machines and sensor types to be used to acquire point cloud data and different sensor types to be used during surface construction and modification. The method can be utilized with various types of machine controls and surface construction methods.

Abstract: A device for working ground surfaces or roadways comprising a machine frame and a working drum in a drum housing arranged at said machine frame, where no less than one spraying device extending parallel to the working drum and featuring several outlet nozzles for spraying agents arranged next to one another and directed towards the working drum is arranged at the drum housing, where the outlet nozzles comprise one each drivable closing mechanism with a closing element which, in an open position, fully uncovers the nozzle channel of the outlet nozzle and, in a closed position, closes the nozzle channel. A controller drives the closing mechanisms, with the outlet nozzles and the related closing elements being adapted to one another in such a fashion that the flow cross-section in the outlet nozzle is variable in accordance with the position of the closing element on a specified path between the open position and closed position.

Abstract: Method for automatically repairing road potholes includes: irradiating and receiving laser to and from potholes, taking image of potholes and storing image information, calculating distance to potholes, calculating surface area of potholes based on distance to potholes and image information, transmitting image information and surface area information to vehicle device, storing surface area information and image information, calculating the amount of asphalt concrete based on surface area information, heating work area of potholes, cutting work area of potholes, crushing asphalt, sucking in crushed asphalt and storing it in residue storage tank, removing scraps of potholes, supplying asphalt concrete from asphalt concrete storage tank to potholes, receiving weight information from digital gauge at the bottom of the asphalt concrete storage tank to calculate the amount of asphalt concrete, flattening asphalt concrete on the potholes, and displaying image after completion of laying of asphalt concrete on the pot

Abstract: Composite and methods are applied to the surface as a highly visible colored pavement treatment. In an embodiment, a highly visible colored pavement treatment comprises an aggregate material, an enhanced visibility material, and wherein the enhanced visibility material is mixed with and blended into the aggregate material to form a composite. In another embodiment, the method of applying the highly visible colored pavement treatment to a surface may comprise applying an adhesive to a target area, applying enhanced visibility material to the target area, and applying an aggregate material to the target area.

Abstract: A modular anti-impact protection, comprising a main module (10), comprising: an outer body (11), which has at least one internal cavity; an inner body (12), provided with at least one internal cavity, and configured to be inserted at least partially into the cavity of the outer body (11).

Abstract: An oscillating or pulsing fluid stream, or flow 18, 132, 300, is produced from a flow of pressurized air by fluidic apparatus 10, 100, 130, 180, 220 in a device 250 configured for use in surface cleaning, sweeping, lawn care applications, and the like. Converging inlet chamber walls 20, 22, define a tapered internal lumen having a smooth narrowing profile is configured to generate at a power nozzle 44 a high velocity stream with minimal pressure drop. Downstream of the power nozzle, first and second control ports CP1, CP2 are in fluid communication with the high velocity stream 46 and with each other via an inertance loop 72 having a lumen of selected cross sectional area and length. The varying air flow is directed through an outlet chamber 14, 134 shaped to produce an oscillating flow 18 or a pulsating flow 132.

Abstract: A snow and ice clearing vehicle. The vehicle provides a combination of systems configured to facilitate the clearance and removal of snow and ice from roadways and sidewalks. The vehicle includes a snow clearing device, a heating system, and a suction system in communication with a reservoir. The snow clearing device is positioned on the front of the vehicle, wherein the heating system is positioned posterior to the snow clearing device and configured to apply heat to snow and ice not completely cleared by same. The suction system is positioned posterior to the heating system and configured to vacuum snow melted and loosened by the heating system. The reservoir is configured to retain water and snow captured by the suction system. The vehicle further includes a pump, wherein the pump is configured to remove the water from the reservoir through an outlet to an area remote from the vehicle.

Abstract: Systems, methods, apparatus, and computer program products are provided for dispensing a travel path applicant. For example, a computing entity can monitor the location of a maintenance vehicle and/or its travel path to dispense travel path applicants accordingly.

Abstract: A pyramidal geotextile fabric comprising two sets of multi-lobe filament yarns interwoven in substantially perpendicular direction to each other, each of the multi-lobe filament yarns having pre-determined, different heat shrinkage characteristics such that, upon heating, the fabric forms a three-dimensional, cuspated profile. A method of stabilizing soil and reinforcing vegetation comprises the steps of placing a three-dimensional, high-profile woven fabric into soil, wherein the fabric comprises two sets of multi-lobe filament yarns interwoven in substantially perpendicular direction to each other, each of the multi-lobe filament yarns having pre-determined, different heat shrinkage characteristics such that, upon heating, the fabric forms a three-dimensional, cuspated profile; securing the fabric to the ground; and, distributing soil and seed onto the fabric such that the section of ground is quickly revegetated and thereby protected from further erosion.

Abstract: A device for obtaining C.G.S injection control chart for seismic retrofitting and controlling quality includes a pump unit which injects a grout into the ground in predetermined quantities per unit time at an injection pressure that is a predetermined static pressure; a sensor unit which measures a discharge pressure which is a pressure at which the grout injected into the ground through the pump unit is discharged from the pump unit; and a monitoring unit which calculates injection control charts for each depth on the basis of injection quantities per unit time of the grout being supplied by the pump unit, and the discharge pressure measured by the sensor unit.

Abstract: A method to manufacture a native soil flowable fill includes hydro excavating native soil to form a hole at a first excavation, transferring the native soil from the first excavation to a debris tank, and adding a pozzolan component, cement and water to the debris tank. The method also includes mixing the native soil in the debris tank using a mixing apparatus to form the native soil flowable fill, and transferring the native soil flowable fill back to the first excavation into the hole. The native soil flowable fill comprises 30-90% by weight of native soil, 0-50% by weight of the added pozzolan component, 0-50% by weight of the cement, and 10-45% by weight of the water.

Abstract: The invention relates to an anchoring assembly for fastening an element (20) to the ground, the element including an orifice (22). The invention is characterized by the fact that anchoring assembly comprises: an anchoring part (40); a flexible line (60) having a first end that is fastened to the anchoring part, the flexible line being designed to pass through the orifice; and a blocking device (80) including an opening, the flexible line extending through the opening, and blocking means (86) for blocking sliding of the flexible line in the opening, the blocking device being suitable for taking up a first position in which the flexible line can slide in the opening in such a manner as to adjust the distance between the blocking device and the anchoring part, and a second position in which the flexible line is blocked in the blocking device in such a manner as to prevent the blocking device from moving relative to the anchoring part.

Abstract: There are provided an electric motor (12) that is driven by an engine (8) to generate electric power or assists in a drive of the engine (8) by supply of electric power thereto, a heat exchanger (13) to which cooling air is supplied by a cooling fan (8A), a heat exchanger upstream room (28) that is positioned upstream of the heat exchanger (13) in a flow direction of the cooling air supplied to the heat exchanger (13), and an electricity storage device (30) that stores or discharges electric power. In addition, a radiator (42) for electricity storage device, a cooling pump (43) for electricity storage device and a cooling line (44) for electricity storage device configure a cooling system (41) for electricity storage device that independently cools the electricity storage device (30) aside from the inverter device (34), and the cooling system (41) for electricity storage device is arranged in the heat exchanger upstream room (28).

Abstract: A coupler device for coupling an attachment to a mechanical arm of a machine or vehicle, comprising a main hitch body (2), an actuator (3) mounted to the main hitch body (2) and moveable relative to the main hitch body (2) and a front locking mechanism. The front locking mechanism comprises a first locking member (4) adapted to be pivoted by operation of the actuator (3) from an open position to a closed position to engage with a first pin or other means of an attachment to secure the attachment to the mechanical arm and a second locking member (6) provided on the main hitch body which is adapted to mount the actuator to the main hitch body when the first locking member is in its closed position such that the main hitch body prevents the first locking member (4) from pivoting into its open position.

Abstract: A rock bucket attachment for securement with a skid steer unit or tractor front loader, the attachment incorporating a bucket for use in combination with a grapple, the bucket having side walls, back walls, and a bottom wall, the grapple interconnecting by lever arms to the side walls of the bucket, the grapple having a pair of side arms pivotally connected with the front of the lever arms, and hydraulic cylinders interconnecting between the back of the side arms and the back end of the side walls, or the frame structure interconnecting between the two, such that when the hydraulic cylinders are actuated, they initially pivot the lever arms forwardly to their fullest extent to arrange the grapple and its rake over a debris pile, and then further actuation of the hydraulic cylinders pivoting the side arms relative to the lever arms to pivot the rake of the grapple downwardly to urge any debris into the bucket as the rake comes into proximity with the front of the bucket, to retain any raked debris therein.

Abstract: A low cost plow lift and down pressure system comprising a lift frame having a lift end and a mount end for securing to a plow vehicle. A lever beam articulates with a lift end of the lift frame. The system further comprises a; lift tension line, down pressure tension line, hydraulic pump, hydraulic cylinder, push frame, down pressure arm, and plow. A push frame extends between a plow and a lift frame. A lift tension line extends between a plow receiver near the plow and a lift receiver on the lever beam. A down pressure tension line extends between a first down pressure receiver on the lever beam to a second down pressure receiver located on a down pressure arm that is coupled to the push frame. Active extension and retraction of a first hydraulic cylinder causes consequent raising of the plow and plow down pressure.

Abstract: Pipe burial apparatus are disclosed that include sets of rotary nozzle cutters configured to straddle a pipe that is to be buried and a nozzle array connected to a nozzle supply pipe in a manner that places the nozzle supply pipe in a cutting path of a rotary nozzle cutter. The nozzle supply pipe may be actuated to alternatingly move the nozzle array between a position straddling the pipe being buried and a cutting position that is below the pipe being buried.

Abstract: A wear pad system includes a wear pad having a contact surface that contacts a corresponding contact surface of a first object. The wear pad system further includes an adjustment cap having a threaded outer surface and a boss member, having a threaded inner surface, such that the boss member is positioned on a second object and configured to guide the wear pad along a path toward the corresponding contact surface of the first object. Furthermore, the second object moves relative to the first object, the threaded outer surface of the adjustment cap engages the threaded inner surface of the boss member, and the adjustment cap is urges the contact surface of the wear pad into contact with the corresponding contact surface of the first object in response to rotation of the adjustment cap relative to the boss member.

Abstract: A construction machine includes: a cover that covers an engine and a radiator; a radiator fan that is arranged at the rear of a vehicle body frame and discharges exhaust gas toward the rear of the vehicle body frame from the inner space of the cover; an injection device that injects a reducing agent into exhaust gas of the engine; a tank housing section that is arranged at one side of the vehicle body frame, includes an introduction section for introducing outside air, and houses a tank for storing the reducing agent injected by the injection device; and a connection section that is arranged in either the cover or the vehicle body frame and in the tank housing section, connects the inner space of the tank housing section and the inner space of the cover, and allows the outside air and the pipe to pass therethrough, the outside air having been introduced from the introduction section by the suction pressure of the radiator fan, the pipe supplying the reducing agent to the injection device.

Abstract: A public works vehicle has a base, moving means supporting the base, brackets joined to the frame of the base, a lifting system suitable for lifting a counterweight. The lifting system has a first arm hinged to the frame, at least one thrust actuator connected to the frame and to the first arm to move the first arm, a second arm slidingly mounted with respect to the first arm, a lifting actuator connected to the first arm and to the second arm to move the second arm, a connection system connected to the second arm and to the counterweight.

Abstract: A work machine includes: an operator seat; an operation device having an operation lever; a working device to be operated via the operation lever; and a support mechanism to support the operation device selectively at a first position or a second position, the first position being on a side of the operator seat, the second position being located forward with respect to the operator seat.

Abstract: A system configured to be mounted to a vehicle for adjusting a position of an implement during an autonomous operation being performed by the vehicle. For example, the vehicle may monitor a height, slope angle, and/or load of an implement during an operation and adjust one or more parameters associated with the implement to achieve a desired finishing profile.

Abstract: The hydraulic fluid energy recovery apparatus includes a fluid communication line for holding a bottom-side hydraulic fluid chamber and a rod-side hydraulic fluid chamber of a hydraulic cylinder in fluid communication with each other, a fluid communication valve connected to the fluid communication line for adjusting the pressure and/or flow rate of a hydraulic fluid passing through the fluid communication line in a manner that allows for adjustment of a degree of opening of the fluid communication valve, first pressure detecting means for detecting a signal indicative of pressure at the bottom-side hydraulic fluid chamber of the hydraulic cylinder, an amount-of-operation detecting means for detecting an amount of operation of the operating means, and a control device for capturing the signal of pressure at the bottom-side hydraulic fluid chamber of the hydraulic cylinder detected by the first pressure detecting means.

Abstract: A shovel performing a work by being operated by a driver includes a lower running body, an upper turning body mounted on the lower running body and a control device that controls an operation of a hydraulic actuator in response to an operation applied to an operation lever. A cabin is provided in the upper turning body. An attaching part is provided in the cabin and is capable of attaching a multifunctional portable information terminal having a display and input function, a wireless communication function and a voice recognition function. The attaching part includes a connecting part connected to the multifunctional portable information terminal. The control device performs data communication with the multifunctional portable information terminal through the connecting part, and supplies electric power from an electric accumulation part of the shovel to the multifunctional portable information terminal through the connecting part.

Abstract: A controller uses a Kalman filter to develop an estimated position of an implement based on a previous implement position, an implement pitch, an implement pitch rate and an estimated implement linkage velocity. The controller moves the implement to a desired position based on the estimated position of the implement.

Abstract: A wear plate for attachment to an excavator bucket. The wear plate comprising a mounting surface for mounting to an exterior face of the excavator bucket. The wear plate having a plurality of holes extending along at least a portion of the wear plate. The holes include carbide matrix weldment therein overfilling the holes. The wear plate comprises a sacrificial and impermanent replaceable wear edge for the exterior faces of the excavator bucket.

Abstract: An economizer system and method for saving heat and water, comprising a bathing facility for receiving hot water from a water heater through a pipeline; a first valve for controlling the flow of hot water received by the bathing facility; a second valve for allowing the flow of an initial volume of cold water existing in the pipeline between the water heater and the bathing facility 1 through a filling line; and a holding tank for collecting the initial volume of cold water flowing from the filling line before the hot water is delivered to the bathing facility.

Abstract: An opening tool for a locking cap of a fire hydrant includes a collar with multiple protrusions that can attach to corresponding protrusions provided on an outer surface of the locking cap. The opening tool also includes a main support portion coupled to the collar, a guide supported by the main support portion, the guide including a shaft support, a pin moveably disposed within the guide and a cam lever rotatably coupled to the guide by a shaft. The shaft extending through the cam lever. The shaft being supported by a shaft support. The cam lever including a cam surface in contact with a first end of the pin. The cam surface including a first flat surface, a second flat surface and a curved surface that extends between the first flat surface and the second flat surface.

Abstract: A single button, cyclic shower head switch includes a main body having a button opening and at least two outlet passages; a reversing shaft disposed in the main body by a connecting element having a pivot, that has a sealing pad and one end having a spherical surface including a top face and a bottom face, and is configured to move along the axis of the main body; and a reversing button movably coupled to the pivot, that protrudes from the button opening, and is disposed with a guiding groove coupled to the spherical surface of the reversing shaft. When the reversing button is switched, the guiding groove moves circularly about the pivot and abuts against the spherical surface and causes the reversing shaft to move downwardly or upwardly along the axis of the main body so that the sealing pad closes one outlet passage and opens another outlet passage.