Patent application number | Description | Published |
20100019762 | WIRE ROPE FLAW DETECTOR - A wire rope flaw detector includes a magnetizer having a pair of exciting magnets disposed on a back yoke such that polarities thereof are opposite to each other, and forming a main magnetic path in a predetermined segment in an axial direction of a wire rope; and a leakage magnetic flux detection section disposed in the predetermined segment in the axial direction, and detecting leakage magnetic flux generated from a damaged portion of the wire rope. Each of the exciting magnets are formed so as to have a cross-section of a shape that embraces the wire rope when each exciting magnet is cut along a plane perpendicular to the axial direction of the wire rope, and has magnetic orientation, on the cross-section of the exciting magnet, oriented from at least two directions toward the wire rope. | 01-28-2010 |
20100102807 | WIRE ROPE FLAW DETECTOR - A wire rope flaw detector comprises a back yoke and excitation permanent magnets, which form a main magnetic path in a predetermined section of a wire rope in the axial direction; a magnetic path member arranged in the predetermined section to be magnetically insulated from the back yoke and the permanent magnets and making the leakage flux generated from a damaged part of wire rope detour to the outside of the wire rope; and a detection coil wound around the magnetic path member for detecting leakage flux. The amount of leakage flux can be increased by providing the magnetic path member and since the windable area of the detection coil is increased, the number of turns of detection coil can be increased. | 04-29-2010 |
20100182000 | WIRE-ROPE FLAW DETECTOR - There is obtained a wire-rope flaw detector capable of realizing a high signal-to-noise ratio even in the case where only one detection coil is disposed. In the wire-rope flaw detector, there are provided a magnetizer that forms main magnetic flux in a predetermined section located along an axis direction of a wire rope ( | 07-22-2010 |
20100244821 | ROPE TESTER DEVICE - In order to reduce noise due to the rope vibration in the rope tester, a mounting shaft extending perpendicular to the running direction of the wire rope is positioned in front of the rope tester, and a hook-shaped engagement piece, which extends from the rope tester and is slidable or rotatable into an opened or closed position, is brought into engagement with the mounting shaft so that the rope tester is held movable in the perpendicular direction relative to the running direction of the wire rope. | 09-30-2010 |
20100259253 | ROPE TESTER DEVICE - In order to examine abnormality in shape of an outer circumference of a wire rope, the rope tester device includes a comb-shaped detection plate having a curved test edge portion extending along at least one portion of an outer circumference of a substantially circular sectional configuration of the wire rope and a testing recessed portion for receiving the wire rope in the vicinity of or in contact with the test edge portion, and a support device for rotatably supporting the detection plate in the vicinity of or in contact with the wire rope for permitting the rotation of the detection plate when the detection plate receives a force from an abnormal portion of the wire rope to relieve the force. A test string is disposed in an opening of the testing recessed portion for testing a surface that is not in the vicinity of or in contact with the test edge portion. | 10-14-2010 |
20110006762 | WIRE ROPE FLAW DETECTOR - A magnetic flux generated by current excitation is allowed to pass through a part or an entire of a magnetic path of a leakage magnetic flux. A magnetic flux content due to the current excitation is temporally changed to change a leakage magnetic flux content interlinked with a detection coil so that an induced voltage is generated in the detection coil. Consequently, damage can be detected even in a case where there is no relative speed between a wire rope and a wire rope flaw detector. Further, a configuration of the magnetic path and the number of ampere turns of an exciting coil are set to be appropriate to prevent the magnetic flux generated by the current excitation from passing through the detection coil or to allow the magnetic fluxes offset each other. Thus, noise superimposition on the detection coil due to the current excitation can be prevented. | 01-13-2011 |
Patent application number | Description | Published |
20080312062 | OPTICAL GLASS AND LENS - The invention provides an optical glass comprising, by mass % on the oxide basis; 25 to 50% of B | 12-18-2008 |
20080312063 | OPTICAL GLASS - The present invention provides an optical glass including, by mass %: 46 to 70 of B | 12-18-2008 |
20080318758 | OPTICAL GLASS - This invention provides an optical glass including, by mass %: 30 to 40% of B | 12-25-2008 |
20090093357 | OPTICAL GLASS AND LENS USING THE SAME - The invention provides: an optical glass which comprises, in terms of % by mass on the basis of oxides, 13-27% of B | 04-09-2009 |
20100240516 | OPTICAL GLASS AND PREFORMS FOR PRECISION PRESS MOLDING AND OPTICAL ELEMENTS MADE BY USING THE GLASS - An object of the invention is to provide an optical glass for precision press having optical properties of a high refractive index and a low dispersion property and having a low molding temperature, a high devitrification resistance, an excellent molding property, and a small specific gravity. The optical glass of the invention contains, in terms of % by mass on the basis of oxides, respective components of B | 09-23-2010 |
20140162863 | HIGH VISIBLE TRANSMISSION GLASSES WITH LOW SOLAR TRANSMISSION - Glasses are described which have characteristics that produce high visible transmittance, low solar transmittance, and high selectivity. The glasses can also preferably have a blue-green color. A number of advantageous formulations are described. | 06-12-2014 |
20140305502 | GLASS SUBSTRATE AND METHOD FOR PRODUCING GLASS SUBSTRATE - A method for producing a glass substrate includes (a) a step of forming molten glass having a temperature T2 less than or equal to 1500° C. on molten tin having an iron concentration greater than or equal to 100 ppm to produce a glass ribbon having a temperature T4 less than or equal to 1100° C. and a logarithm log ρ greater than or equal to 8.8, and (b) a step of cooling the glass ribbon to room temperature to produce the glass substrate. The temperature T2 represents a temperature when a logarithm of a viscosity η (dPa·s) is 2, the temperature T4 represents a temperature when the logarithm of the viscosity η (dPa·s) is 4, and the logarithm log ρ represents a logarithm of a volume resistivity ρ (Ω·cm) at 150° C. | 10-16-2014 |