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    • 5. 发明专利
    • MANUFACTURE OF METALLIC TUBE
    • JPH07108321A
    • 1995-04-25
    • JP27738393
    • 1993-10-12
    • YOSHIDA MASAO
    • YOSHIDA MASAO
    • B21C37/08B21C37/15B23K26/21B23K26/00
    • PURPOSE:To provide freedom of changing thickness, finishing the surface of a material, etc., and to attain a wide range of use by joining with a laser beam the end edges of plural metallic sheets that have been separately worked for bending, and forming into a tube. CONSTITUTION:A metallic sheet 1 formed into a portal shape and a metallic sheet 2 bent for a circular-arc section are abutted each other on the edges 1a, 1b and 2a, 2b and welded into a tuba by a laser beam. For example, in the case of handrails and partitions, a sheet that has been bent in a prescribed shape is preliminarily drilled at the position where a flute or a small column is assembled, welded on the rear side for installation, finally welded into a tube shape by a laser beam and finished. Consequently, since a length for example can be set arbitrarily, a material is not wasted, and resources are saved. In addition, as welding is performed on the part that are not seen, the welding strength is retained, and a finishing working is unnecessitated. Moreover, it can facilitate the production of many kinds in small quantities because metallic dies are not required.
    • 8. 发明专利
    • DEVICE FOR ELIMINATING EXHAUST GAS FROM STACK
    • JPH0618019A
    • 1994-01-25
    • JP21537592
    • 1992-07-04
    • YOSHIDA MASAO
    • YOSHIDA MASAO
    • B01D53/34F23J15/00
    • PURPOSE:To completely burn products of incomplete combustion while the unburned combustibles remain at high temperatures immediately before emission from a stack, relating exhaust gas from a factory which incomplete combustion causes to contain large quantities of toxic components when emitted, in order to reduce pollution of the air and make the environment wholesome. CONSTITUTION:A stack 1 is built low. A device for eliminating exhaust gas from chimney exhaust comprises a smoke-gathering part 2 which has the shape of substantially an inversely held funnel and is provided at an upper part inside the stack 1, a laser oscillator 3 for irradiating the smoke discharged through the smoke-gathering part 2, a laser-reflecting plate 5 which is placed on the wall at a position opposite the laser oscillator 3 and irradiated with the light beam from the laser oscillator 3, and an oxygen-feeding device 4 which operates in conjunction with the laser oscillator 3 in an interlocking mechanism, and is designed to turn the emission into completely burned gases.
    • 10. 发明专利
    • STRAP
    • JP2003250623A
    • 2003-09-09
    • JP2002053021
    • 2002-02-28
    • YOSHIDA MASAO
    • YOSHIDA MASAO
    • A45C13/30H04M1/02H04M1/11
    • PROBLEM TO BE SOLVED: To provide a strap to be mounted on a cellular phone or the like capable of being provided with a bright drawing part in a strange shape to stimulate a user's buying inclination and to improve the appearance, and being relatively easily and inexpensively produced. SOLUTION: This strap 1 comprises a base plate part 2 having a square hole 7 and a base plate insert member 3 having a through part 8 to be inserted to the square hole 7 and swollen parts 9 and 10 larger in dimension than the square hole 7 formed as an integrated matter, and further, as occasion demands, a lighting part 4 for lighting an internal drawing part 11 formed therein by laser working or the like with an LED 13 or the like. Various characters and pictures and various characters and patterns related to advertisement can be also provided on the base plate part 2 or the base plate insert member 3. COPYRIGHT: (C)2003,JPO