Seiichi Hayashi
Seiichi Hayashi, Kudamatsu JP
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20090021028 | Railway Car and Obstacle Deflector - The invention provides a small-sized, light weight and low cost obstacle deflector for removing obstacles on a railway track. An obstacle deflector | 01-22-2009 |
Seiichi Hayashi, Kudamatsu-Shi JP
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20080236440 | TRANSPORTATION DEVICE - The invention provides a shock absorbing structure capable of turning the function of the shock absorber on and off according to the level of shock during collision, thereby reducing the frequency of replacing shock absorbers. On a rear surface of a load operating unit | 10-02-2008 |
Seiichi Hayashi, Oshima-Gun JP
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20140083321 | RAILWAY CAR COMPRISING HEAT-RESISTANT FLOOR - A railcar includes a heat-resistant floor, and the heat-resistant floor includes a floor panel, a heat absorbing layer provided under the floor panel and configured to absorb heat, and a supporting plate configured to support the heat absorbing layer from below. The supporting plate includes contacting portions each configured to contact the heat absorbing layer and separated portions each continuously formed from the contacting portion in a railcar width direction, separated downward from the heat absorbing layer, and extending in a railcar longitudinal direction. | 03-27-2014 |
20140245922 | COLLISION ENERGY ABSORPTION COLUMN AND RAILROAD VEHICLE PROVIDED WITH THE COLLISION ENERGY ABSORPTION COLUMN - A collision energy absorption column is provided on an end side of a railroad vehicle structure and extends from an end beam toward a roof structure. The collision energy absorption column includes a metal outer member having a transverse cross section of a channel shape, and an inner member made of reinforced plastic provided along an inner circumference of the outer member and extending in parallel with the outer member. The outer member is configured by joining two column halves extending along a column axis after arranging the two column halves are arranged in a direction perpendicular to the column axis of the outer member. The joined part of the column halves extends along the column axis. The outer member is coupled to the end beam and roof by a fastener. The inner member extends between the end beam and a part of the roof structure, excluding the fastening parts. | 09-04-2014 |
20140250800 | RAILROAD VEHICLE PROVIDED WITH LOW ROOF STRUCTURE - A railroad vehicle where an air conditioner can be installed in an upper part of a roof thereof includes a roof structure having an opening, and a low roof main body having a recessed part provided in the opening, and recessed in a cross section, the air conditioner being able to be placed on the recessed part, and an edge part of the low roof main body which is continuously formed from the low roof main body and joined to the roof structure. The low roof main body and the edge part of the low roof main body are made of plastic. | 09-11-2014 |
Seiichi Hayashi, Anan-Shi JP
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20150053917 | SEMICONDUCTOR LIGHT EMITTING DEVICE - A semiconductor light emitting device is provided which has improved light emission efficiency. The semiconductor light emitting device includes an active layer having a quantum well structure. The quantum well structure includes well and barrier layers that are alternately and repeatedly deposited on one another. The well layer is formed of a gallium nitride group semiconductor that contains In. The well layer has a profile of composition ratio of In that includes a first portion, and a second portion that is in contact with the first portion. The concentration of In in the first portion is substantially fixed or reduced along the thickness direction of the well layer from the negative side to the positive side of the piezoelectric field that is produced in the well layer. The concentration of In in the second portion is sharply reduced with respect to the first portion. | 02-26-2015 |
Seiichi Hayashi, Tokyo JP
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20150229095 | LASER DEVICE - A laser device includes an optical fiber laser unit including an amplification optical fiber, a plurality of pumping light sources outputting pumping lights for optically pumping the amplification optical fiber, and a controller controlling the pumping light sources. When an instruction value for supplying a predetermined driving electric current to each of the pumping light sources is input to the controller, the controller conducts a control of supplying a compensated electric current value as a driving electric current obtained by multiplying an initial electric current value corresponding to the instruction value by a compensation coefficient and supplying the compensated electric current value to each of the pumping light sources. The compensation coefficient is set to restrain a decrease in a power with time of a laser light output from the optical fiber laser unit. | 08-13-2015 |
Seiichi Hayashi, Komatsu-Shi JP
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20150266134 | FIBER LASER PROCESSING MACHINE, FIBER CONNECTION METHOD AND FIBER LASER OSCILLATOR - There is provided a fiber laser processing machine, a fiber connection method and a fiber laser oscillator that are capable of improving the beam quality. A fiber laser processing machine comprises: a processing machine body provided with a laser processing head for emitting laser beams; a fiber laser oscillator including a fiber laser module for generating the laser beams and a feeding fiber cable for collectively taking out the laser beams generated by the fiber laser module; and a process fiber cable for transmitting the laser beams taken out by the feeding fiber cable of the fiber laser oscillator to the laser processing head of the processing machine body. The feeding fiber cable and the process fiber cable are joined by fusion, and the feeding fiber cable and the process fiber cable have an equal core diameter. | 09-24-2015 |