Abstract: A jack, comprising: a top plate adapted to contact a load; an intermediate plate positioned below the top plate, the intermediate plate having a channel formed therein; a base plate positioned below the intermediate plate; a first pair of actuators coupled between the base plate and the intermediate plate, one of the first pair of actuators positioned on either side of the channel; and, a second pair of actuators coupled between the channel of the intermediate plate and the top plate; wherein the first and second pairs of actuators are operable to move the top plate and the intermediate plate between respective lowered positions and respective raised positions to thereby lower and raise the load.

Abstract: According to one or more embodiments, a hand-held, portable opener for a hopper trailer and method of opening is described. The hopper trailer opener comprises a base tool assembly coupled with an extension shaft assembly and can be adapted for use with a variety of different trailer opening mechanisms.

Abstract: A system for monitoring cleanliness in a store. The system may include a server, a database and at least one sensor. The database may be in communication with the server and may store cleanliness parameters. The system includes at least one sensor configured to transmit measured cleanliness characteristics to the server and the server is configured to transmit a message based on a comparison of the measured cleanliness characteristics and the cleanliness parameters stored in the database.

Abstract: A robot cleaner comprising: a cleaner body including a wheel unit and a controller controlling driving of the wheel unit; a suction unit disposed to protrude from the cleaner body, the suction unit sucking air containing dust; and a sensing unit disposed at the front of the cleaner body in which the suction unit is disposed, wherein at least one portion of the sensing unit is disposed to overlap with the suction unit in the top-bottom direction of the cleaner body.

Abstract: A robot cleaner comprising: a first housing including a controller and a driving wheel of which driving is controlled by the controller; a second housing provided at one side of the first housing, the second housing having a brush module or mop module mounted thereto; a front bumper provided at a front portion of the second housing, the front bumper configured to be movable to the inside of the second housing when the front bumper is in contact with an obstacle; at least one sensing means provided at the inside of the front bumper to sense a movement of the front bumper to the inside of the second housing; side bumpers respectively provided at left and right side portions of the second housing, the side bumpers each being configured to movable to the inside of the second housing when the side bumper is in contact with an obstacle; and a link member provided at the inside of the side bumper to allow the side bumper and the front bumper to interlock with each other such that, when the side bumper is moved to th

Abstract: A robot cleaner comprising: a cleaner body including a dust container accommodation part formed to be recessed toward the front from the rear thereof; a suction unit mounted in the cleaner body to suck air containing dust; a dust container accommodated in the dust container accommodation part, the dust container collecting dust filtered from sucked air; and an exhaust port formed at an end portion of one rear side of the cleaner body, which surrounds the dust container accommodation part, to discharge filtered air to the outside, the exhaust port disposed along the height direction of the cleaner body.

Abstract: The present invention is method for polishing silicon wafer, the method including recovering used slurry containing polishing abrasive grains that have been supplied to the silicon wafer and used for polishing, and circulating and supplying the recovered used slurry to the silicon wafer to polish the silicon wafer, wherein mixed alkali solution containing chelating agent and either or both of a pH adjuster and a polishing rate accelerator is added to the recovered used slurry without adding unused polishing abrasive grains, and the recovered used slurry is circulated and supplied to the silicon wafer to polish the silicon wafer. As a result, there is provided a method for polishing a silicon wafer that can suppress the occurrence of metal impurity contamination and stabilize the composition (e.g., the concentration of the chelating agent) of the used slurry when the used slurry is circulated and supplied to the silicon wafer for polishing.

Abstract: A robot cleaner of the present disclosure comprises a main body configured to travel in a cleaning zone and to suction a foreign substance on a floor in the cleaning zone, an image sensor provided on the main body and configured to obtain an image of a predetermined area at a front side of the main body, a first light source provided on the main body and configured to emit a first pattern of light to a first sub-area of the predetermined area and a second light source provided on the main body at a position below the first light source and configured to emit a second pattern of light to a second sub-area of the predetermined area, the first sub-area being located lower than the second sub-area.

Abstract: Stabilizing devices and methods of use for stabilizing spreading tools are provided. The stabilizing device includes a base having a first surface and a second surface, a first tower extending from the first surface having a first aperture formed therein, a second tower extending from the first surface having a second aperture formed therein, wherein the second tower is separated from the first tower by a tower span configured to receive a portion of the spreading tool, an engagement pin removably receivable through the first and second apertures, extend across the tower span, and configured to engage with a portion of a spreading tool, and a rail extending from the first surface and configured to stop movement of a spreading tool that is engaged with the engagement pin between the first and second towers.

Abstract: A robot cleaner comprising: a cleaner body; a suction unit sucking air containing dust to be introduced into the cleaner body; and a dust container detachably coupled to the cleaner body, the dust container collecting dust filtered from the air introduced into the cleaner body, wherein the dust container includes: an external case including at least one cyclone filtering dust in air introduced into the dust container; an upper case coupled to an upper portion of the external case, the upper case including an upper opening corresponding to a space into which air passing through the cyclone is discharged; an upper cover detachably coupled to the upper case to open/close the upper opening; and a filter mounted on a rear surface of the upper cover, the filter covering the discharged space of the air passing through the cyclone when the upper cover is coupled to the upper case, to filter dust in the air passing through the cyclone.

Abstract: A method for the dressing of a multi-thread grinding worm by a dressing roll, wherein the grinding worm has at least two screw channels which are arranged parallel to another, which screw channels extend helically around an axis of the grinding worm and wherein the dressing roll has at least two adjacent dressing profiles which are arranged along an axis of the dressing roll, wherein the dressing profiles of the dressing roll are guided simultaneously through adjacent screw channels of the grinding worm during the dressing of the grinding worm.

Abstract: A polishing method includes: a step of preparing a polishing device including a processing member and a suction mechanism configured to generate suction force; a step of setting a workpiece in the processing member; and a step of accelerating abrasive grains fed toward the workpiece to a predetermined speed with an air flow generated by operation of the suction mechanism, and polishing the workpiece by causing the abrasive grains to contact with or collide with the workpiece.

Abstract: A universal handle attachment for C-clamps. The handle attachment includes a rigid body having a first side to engage a C-clamp, and a second side opposite to engage a rotation tool. In the first side, a first channel and a second channel which are perpendicular with one another each are configured to receive a T-bar of the C-clamp. A center space in the first side at the intersection of the first channel and the second channel is configured to receive a top end of the screw. Each channel includes clip spaces on both sides of the center, and clips situated in the clip spaces. The clips each have an opening to secure the T-bar within the channels.

Abstract: A robot cleaner comprising: a cleaner body including a wheel unit and a controller controlling driving of the wheel unit; a dust container accommodation part having a shape recessed toward the front from the rear thereof to be opened to the rear; a dust container detachably coupled to the dust container accommodation part, the dust container have a portion protruding rearward of a rear end of the cleaner body in a state in which the dust container is accommodated in the dust container accommodation part; and a dust container cover rotatably coupled to the cleaner body to cover the dust container, wherein the dust container cover is accommodated in the dust container accommodation part in a state in which the dust container cover is disposed to cover the dust container, and a portion of the dust container cover protrudes rearward of the rear end of the cleaner body.

Abstract: A robot cleaner comprising: a cleaner body including a controller, the cleaner body having a dust container accommodation part formed therein; a wheel unit mounted in the cleaner body, the wheel unit of which driving is controlled by the controller; a suction unit mounted in the cleaner body to suck air containing dust; a dust container detachably coupled to the dust container accommodation part, the dust container filtering and collecting dust from sucked air; and a dust container cover including a hinge part rotatably coupled to the cleaner body, the dust container cover detachably coupled to the dust container to cover a top surface of the dust container.

Abstract: A autonomous cleaner includes: a cleaner body including a wheel unit for autonomous traveling; a suction unit provided to protrude from one side of the cleaner body, the suction unit sucking air containing dust; a sensing unit provided at the one side of the cleaner body; a dust container accommodated in a dust container accommodation part formed at the other side of the cleaner body, the dust container collecting dust filtered from sucked air; and a dust container cover hinge-coupled to the cleaner body to be rotatable, the dust container cover being provided to cover a top surface of the dust container when the dust container cover is coupled to the dust container.

Abstract: A grill cleaning device includes a main body having a top surface, a bottom surface and a plurality of side walls extending upward therefrom. A handle is located at the center of the main body equidistantly from each of the side walls. A pocket area is formed by the combination of the bottom surface, the side walls and the handle for receiving a human hand. A plurality of elongated channels are disposed along the bottom surface of the main body. Each of the channels include a particular shape, size and separation distance for engaging rods of grill grates having different shapes and sizes.

Abstract: There is provided a mounting table system which includes: a mounting table rotatably installed so as to mount a substrate thereon; a plurality of heating parts installed in the mounting table, and configured to heat the mounting table; a single power source configured to supply an electric power to the plurality of heating parts; and a power switching part configured to switch from a first heating part among the plurality of heating parts to which the electric power is supplied from the single power source, to a second heating part among the plurality of heating parts, depending on a rotational angle of the mounting table.

Abstract: An industrial street sweeper attachment removably attaches to a prime mover with a quick coupler and has a forward debris collecting hopper mounted on the front of a rotary brush compartment having a floating sweeping brush therein. The debris collecting hopper is hingedly attached to the brush compartment and has a linkage therebetween having a lifting arm and a lifting hydraulic cylinder which can remotely lock the debris collecting hopper to the brush compartment to receive swept debris from the rotary sweeping brush and can be remotely lifted to an open position for discharging debris.

Abstract: Disclosed is a size-variable wheel deburring device including combined manipulators, a transfer manipulator, a burr brushing system, fixture systems, and so on. Pneumatic fingers grip shanks of retaining pins to bring pin bodies into fit with first retaining sleeves and second retaining sleeves, and retaining lugs with guide grooves. Springs are compressed to cause 90-degree rotation of pin bodies such that retaining lugs come into retaining grooves of the second retaining sleeves. A brush is driven by a driving motor to rotate and elevated by right elevating cylinders to contact with a back cavity of a wheel for deburring. The size-variable wheel deburring device is capable of automatically adjusting the size of the brush and of each fixture according to the diameters of wheels in use, and realizing mixed online burr brushing, and additionally has the characteristics of advanced technique, high automation degree, good universality, and safe and stable performance.