Abstract: An elevator rope monitoring device, provided with: line sensor cameras 1a, 1b for imaging the entire circumference of the traveling elevator rope 5; a speed/position detecting device 4 for detecting the traveling speed and traveling position of the elevator rope 5; an image recording part 3a for inputting the image acquired by the line sensor cameras 1a, 1b in association with the traveling position of the elevator rope 5 detected by the speed/position detecting means 4; an image creating part 3b for creating an entire circumferential image of the elevator rope 5 from the image imaged by the line sensor cameras 1a, 1b; and an image processing part 3c for detecting an abnormality in the elevator rope 5 by analyzing the entire circumferential image.

Abstract: A wireless power supply system includes a plurality of power transmission units that receives and supplies power to a power receiving unit via the power transmission coil in a resonance state, and a switching control unit that switches a state of a first power transmission unit to a resonance state when the magnitude of the magnetic flux generated in a first power transmission coil of the first power transmission unit, which is one of the plurality of power transmission units, is greater than a predetermined threshold value, and switches to a non-resonance state when the magnitude is less than the threshold value. The threshold is set as a magnitude that exceeds the magnetic flux generated in the first power transmission coil due to coupling between the first power transmission coil and a second power transmission coil of a second power transmission unit, which is adjacent to first power transmission coil.

Abstract: A Schiff base-containing chain extender may be a diol having a Schiff base or a derivative thereof, as well as a polyurethane produced using the same and a modification method thereof, and a polishing layer including a polyurethane and a polishing method using the polishing layer.

Abstract: According to one embodiment, a cleaning head for cleaning a plurality of hoisting belts and/or at least one sheave of an elevator system is provided. The at least one sheave includes a plurality of grooves for receiving each of the hoisting belts. The cleaning head comprises a base plate and a plurality of wipers fixed to an upper end of the base plate to project outwards from the base plate. The cleaning head may be used to clean the plurality of hoisting belts at once and/or the plurality of grooves of the at least one sheave at once.

Abstract: During a maintenance inspection, an optical rope diameter measuring device is provided at a predetermined position along a path of a wire rope, rope diameter is measured at multiple measuring points while the elevator is driven in test mode, and diameter reduction at each measuring point is determined and stored as a first diameter reduction (S2_S6). During a subsequent maintenance inspection, rope diameter is similarly measured at each measuring point to determine diameter reduction constituting a second diameter reduction (S7_S11). Based on these two diameter reductions, the time at which diameter reduction will reach a predetermined threshold value is predicted for each measuring point, and the earliest time is displayed as a rope replacement time (S12_S14).

Abstract: A laser processing apparatus disclosed in the present application includes: an optical deflection unit capable of changing a deflection direction of and outgoing energy of an incoming laser pulse by changes of a frequency of and an amplitude of a driving signal to be supplied; and a control unit configured to supply driving signals with amplitudes corresponding to respective frequencies. In a laser processing apparatus configured to process a workpiece by leading outgoing laser pulse of the optical deflection unit to the workpiece and irradiating the workpiece with the laser pulse, as the amplitude corresponding to each of the frequencies, the control unit supplies an amplitude having the ratio that is close to the lowest ratio among ratios of the outgoing energy with respect to the incoming energy of the laser pulse at an amplitude having the largest outgoing energy of the optical deflection unit.

Abstract: Disclosed is a polishing pad including a polishing layer having a polishing surface, wherein the polishing surface includes a deep-groove region having a first pattern formed by a deep groove or hole having a depth of 0.3 mm or more, and a land region that is a region other than the deep-groove region, and the land region includes shallow recesses having a second pattern and a depth of 0.01 to 0.1 mm, and a plurality of island-like land portions surrounded by the shallow recesses and having a maximum distance in a horizontal direction of 8 mm or less.

Abstract: Disclosed are a polyurethane for use in a polishing layer, and a polishing layer and a polishing pad using the same, the polyurethane including a terminal group represented by the following formula (I): R—(OX)n— (I) wherein R represents a monovalent hydrocarbon group having 1 to 30 carbon atoms that may be substituted with a heteroatom or may be interrupted by a heteroatom, X represents an alkylene group having 2 to 4 carbon atoms, 90 to 100% of the alkylene group being an ethylene group, and n represents a number from 8 to 120.

Abstract: Disclosed is a polyurethane for use in a polishing layer, including a carboxylic acid ester group, and a polyurethane preferably having a carboxylic acid ester group in at least one of a side chain, a main chain terminal, and a main chain skeleton is preferably used. Also disclosed is a method for modifying a polishing layer, including the steps of: preparing a polishing layer including a polyurethane having a carboxylic acid ester group; and hydrolyzing the carboxylic acid ester group of the polyurethane, to produce a carboxyl group.

Abstract: Provided is a polishing pad including a polishing surface having a zeta potential of +0.1 mV or more at a pH of 10.0. Preferably, a polishing pad including a polyurethane having a tertiary amine is provided. Further preferably, the polyurethane having a tertiary amine is a reaction product of a polyurethane reaction raw material containing at least a chain extender having a tertiary amine. A polishing method using the polishing pads is also provided, wherein the method is performed while supplying an alkaline polishing slurry.

Abstract: There is used a polyurethane for polishing layers that can be used as a material of a polishing layer of a polishing pad, the polyurethane including a thermoplastic polyurethane that is a reaction product of a polyurethane raw material including a polymer diol, an organic diisocyanate, and a chain extender, wherein the chain extender contains 50 mass % or more of a first chain extender including a straight-chain carbon backbone having 7 to 12 carbon atoms.

Abstract: A modification method of a polyurethane, including the steps of: preparing a polyurethane having an ethylenically unsaturated bond; and treating the polyurethane with a liquid containing a compound having a conjugated double bond, or a modification method of a polyurethane, including the steps of: preparing a polyurethane having a conjugated double bond; and treating the polyurethane with a liquid containing a compound having an ethylenically unsaturated bond is used.

Abstract: Disclosed herein are polyurethanes useful for polishing layers, where the polyurethane is a polyurethane having a Schiff base. Also disclosed herein are polishing layers containing the polyurethanes, polishing methods that use the polishing layers, and a modification method including a step of converting the Schiff base into at least one functional group selected from an aldehyde group, a carboxylic acid group, a hydroxyl group, and an amino group.

Abstract: An elevator rope elongation measuring device provided with: a camera for photographing one or a plurality of elevator ropes R; and an image processing unit for image processing a photographed image output from the camera, wherein: the image processing unit detects an external form portion of the elevator rope R as a regular hill and valley shape T, converts a cyclic length of the hill and valley shape into actual dimensions and makes this a measured value, and finds a ratio of the measured value with respect to a standard value prescribed for the elevator rope as an elongation, therefore attaining the effect of making it unnecessary to have a preliminary installation of a sensor or marker to the rope, or preliminary creation of a database.

Abstract: According to one embodiment, a cleaning head for cleaning a plurality of hoisting belts and/or at least one sheave of an elevator system is provided. The at least one sheave includes a plurality of grooves for receiving each of the hoisting belts. The cleaning head comprises a base plate and a plurality of wipers fixed to an upper end of the base plate to project outwards from the base plate. The cleaning head may be used to clean the plurality of hoisting belts at once and/or the plurality of grooves of the at least one sheave at once.

Abstract: A Schiff base-containing chain extender may be a diol having a Schiff base or a derivative thereof, as well as a polyurethane produced using the same and a modification method thereof, and a polishing layer including a polyurethane and a polishing method using the polishing layer.

Abstract: An elevator motion alert system for alerting a mechanic working inside a hoistway comprises a self-power-generating car beacon mounted on an elevator car, a self-power-generating counterweight beacon mounted on a counterweight, and a mobile device carried by the mechanic for receiving signals transmitted from the car beacon and the counterweight beacon and for providing an alert to the mechanic whenever the elevator car or the counterweight is approaching.

Abstract: According to one embodiment, a rope cleaning device comprises a scraper ring which engages grooves between strands of a wire rope to scrape out foreign material from the grooves as the wire rope passes through the scraper ring, a wiper ring positioned in series with the scraper ring for wiping the surface of the wire rope as the wire rope passes through the wiper ring and a rotational mechanism which allows the scraper ring to rotate about the axis of the wire rope.

Abstract: Disclosed herein are polyurethanes useful for polishing layers, where the polyurethane is a polyurethane having a Schiff base. Also disclosed herein are polishing layers containing the polyurethanes, polishing methods that use the polishing layers, and a modification method including a step of converting the Schiff base into at least one functional group selected from an aldehyde group, a carboxylic acid group, a hydroxyl group, and an amino group.

Abstract: A wired-rope measuring device, provided with two cameras 1, 2 that shoot one or no less than two wired ropes 8 from different directions and an analyzing device 5 that analyzes image data that is an image shot by the two cameras 1, 2, wherein the analyzing device 5 applies the principle of triangulation by a stereo method to the image data to seek a center coordinate P0 of the wired rope 8 relative to the cameras 1, 2 and volumetric anamorphosis is corrected when calculating a diameter D of the wired rope 8 based on the center coordinate P0 of the wired rope 8.