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1. 发明专利

JPH07300532A PRODUCTION OF POLYOLEFIN COMPOSITION 失效
公开(公告)号：JPH07300532A
公开(公告)日：1995-11-14
申请号：JP9359794
申请日：1994-05-02
申请人： FUJIKURA LTD
发明人： KUNIMURA SATOSHI , NATORI NOZOMI , SUZUKI YASUO , TAKEHANA HAJIME
IPC分类号： C08J3/24 , C08K5/00 , C08K5/14 , C08L23/00
摘要： PURPOSE:To produce a polyolefin compsn. which is free from antioxidant blooming during or after the production by mixing a polyolefin with a liq. cross-linker to cause the resin to absorb the cross-linker, adding an antioxidant to the resin, and kneading the resulting compsn. CONSTITUTION:After a polyolefin (a low-density polyethylene contg. no polyether as an impurity and excellent in insulation characteristics is pref. when used for an insulator of a power cable, etc.) is mixed with a liq. cross-linker and allowed to absorb it, an antioxidant is added. Aging before the addition of the antioxidant improves the permeation and dispersion of the cross-linker and enables kneading after the addition to be conducted at a temp. lower than the m.p. of the antioxidant, dispensing with violent and strong kneading at a high temp. Thus the method for producing a polyolefin compsn. free from antioxidant blooming during or after the production is provided.

2. 发明专利

JPH07218332A PIEZOELECTRIC TYPE VIBRATION SENSOR APPARATUS 失效
公开(公告)号：JPH07218332A
公开(公告)日：1995-08-18
申请号：JP1070494
申请日：1994-02-01
申请人： FUJIKURA LTD
发明人： IMAI TAKAYUKI , TAKAHASHI KATSUHIKO , KUNIMURA SATOSHI
IPC分类号： G01P15/09 , G01H11/08 , G01P15/08
摘要： PURPOSE:To provide a piezoelectric type vibration sensor capable of measuring a wide range of frequency, excellent in temp. characteristics and having waterproofness. CONSTITUTION:In a piezoelectric type vibration sensor apparatus wherein a piezoelectric type vibration sensor 35 constituted by attaching a load member 46 to a detection part 45 wherein electrodes are fixed to both surfaces of a piezoelectric element 43 and supports 44 are fixed on both sides thereof and a signal processing circuit board 36 are received in a package 33, the package 33 is constituted of a housing 31 made of a conductive substance having a recessed part 34 housing the piezoelectric type vibration sensor 35 formed thereto and a housing lid member 32 composed of a conductive substance covering the opening part of the recessed part 34. The load member 46 of the piezoelectric type vibration sensor 35 is bonded to the bottom part of the housing 31 toward the opening part of the recessed part 3 of the housing 31. Further, the signal processing circuit board 36 is stretched over the peripheral edge part 37 of the opening part of the housing 31 to be covered with the housing lid member 32 and the housing lid member 33 is integrated with the housing 31.

3. 发明专利

JPH07138437A PLASTICIZED POLYVINYL CHLORIDE ADMIXTURE 失效
公开(公告)号：JPH07138437A
公开(公告)日：1995-05-30
申请号：JP29104793
申请日：1993-11-19
申请人： FUJIKURA LTD
发明人： KUNIMURA SATOSHI , OGINO YOSHIFUMI , YOSHINO AKIRA
IPC分类号： C08L27/06 , C08L73/00 , C08L87/00
摘要： PURPOSE:To obtain the subject admixture by using a copolymer having a specific repeating unit as a plasticizer, having excellent heat resistance, providing high flame retardancy with a small mixed amount of a flame-retardant, having slight reduction in mechanical characteristics and freeze resistance, useful for coated electric wire. CONSTITUTION:This admixture is obtained by mixing (A) 100 pts.wt. of a polyvinyl chloride with (B) 30-100 pts.wt. of a copolymer having a repeating unit bonded with a polyethylene and an acrylic ester through a ketone group. Preferably, the admixture is further mixed with (C) 5-15 pts.wt. of a liquid plasticizer. A copolymer having a repeating unit of the formula (R1 is H or an alkyl; R2 is an alkyl; (n) is an integer) is preferably used as the component B.

4. 发明专利

JPH0787645A BELT TYPE TUBE DRAWING MACHINE 失效
公开(公告)号：JPH0787645A
公开(公告)日：1995-03-31
申请号：JP23004793
申请日：1993-09-16
申请人： FUJIKURA LTD
发明人： NARITA TAKANORI , KUNIMURA SATOSHI
IPC分类号： H02G1/12
摘要： PURPOSE:To provide a belt type tube drawing machine for drawing a tube without collapsing in which the lower belt can be replaced easily and quickly at low cost. CONSTITUTION:In the belt type tube drawing machine where upper and lower endless belts 39, 41 are pressed against a tube interposed between and then the belts 39, 41 are rotated to draw out the tube, the upper and lower belts 39, 41 are coated on the outer periphery thereof, with a soft and elastic material.

5. 发明专利

JPH06201722A PIEZOELECTRIC TYPE VIBRATION SENSOR 失效
公开(公告)号：JPH06201722A
公开(公告)日：1994-07-22
申请号：JP213493
申请日：1993-01-08
申请人： FUJIKURA LTD
发明人： ABO WATARU , KUNIMURA SATOSHI , TAKAHASHI KATSUHIKO , IMAI TAKAYUKI
IPC分类号： G01P15/09 , G01P15/18 , H04R17/00
摘要： PURPOSE:To improve detecting accuracy in the (z) axis direction. CONSTITUTION:A structure is provided by laminating a film shape piezoelectric body 26 and a load body 25 on a base 21. A (z) axis vibration sensor 24 to detect vibration in the (z) axis direction of a straight line passing through almost the center of the piezoelectric body 26 by crossing at a right angle to one surface of the piezoelectric body 26, an (x) axis vibration sensor 22 to detect vibration in the (x) axis direction for crossing at a right angle to the (z) axis direction and a (y) axis vibration sensor 23 to detect vibration in the (y) axis direction for crossing respectively at right angles to the (z) axis and the (x) axis, are provided. The (z) axis vibration sensor 24 is provided with the (z) axis piezoelectric body 26 to detect displacement in the (z) axis direction, the first electrode arranged respectively over the whole obverse and reverse of the (z) axis piezoelectric body 26 and a (z) axis electrode 33. Thereby, since an area of the (z) axis electrode can be formed larger than when plural divided electrodes are arranged in the piezoelectric body, even if a position of the center of gravity of the load body is dislocated more or less, crosstalk can be restrained in a low value, so that detecting accuracy in the (z) axis direction can be improved.

6. 发明专利

JPH06201505A PIEZOELECTRIC VIBRATION SENSOR 失效
公开(公告)号：JPH06201505A
公开(公告)日：1994-07-19
申请号：JP1699293
申请日：1993-01-07
申请人： FUJIKURA LTD
发明人： KUNIMURA SATOSHI , TAKAHASHI KATSUHIKO
IPC分类号： G01L23/10
摘要： PURPOSE:To simplify a manufacturing process, to make the cost low and to reduce the lowering of directivity due to slippage of the position of fixing of a load to a detecting part. CONSTITUTION:In regard to a piezoelectric vibration sensor manufactured by a method wherein a detecting part 21 formed by holding the opposite sides of a piezoelectric body 31 between a load body-side electrode 35a and a pedestal- side electrode 35b and by holding further the respective surfaces of these electrodes between a load supporting plate 37a and a pedestal-side supporting plate 37b is laid in lamination on a pedestal 27 and further a load 29 is laid in lamination on the detecting part 21, a piezoelectric vibration sensor wherein a projection 41 is formed on the load to be laid on the detecting part 21 and a recession 43 to be fitted to the projection 41 is formed on the load supporting plate 37a.

7. 发明专利

JPH06143389A MANUFACTURE OF FLUOROCARBON RESIN TUBE 失效
公开(公告)号：JPH06143389A
公开(公告)日：1994-05-24
申请号：JP29345392
申请日：1992-10-30
申请人： FUJIKURA LTD
发明人： KUNIMURA SATOSHI
IPC分类号： B29C47/88 , B29C48/90 , B29K27/12 , B29L23/00 , B29C47/90
摘要： PURPOSE:To provide a method of manufacturing a high quality fluorocarbon resin tube having a small diameter and thin wall thickness and having no curls or diameter variation of the tube. CONSTITUTION:In a manufacture of fluorocarbon resin tube for forming a resin admixture consisting of fluorocarbon resin or having fluorocarbon resin as a base into a tube shape, temperature of air around the tube passing therethrough is kept at 30 deg.C or higher over the range from the die lip of die 2 of an extrusion machine main body 1 to the solidification of the tube 5 by a method of arranging, e.g. a cooling cylinder 3 provided with a water cooling pipe 4.

8. 发明专利

JPH0634551A GAS SENSOR 失效
公开(公告)号：JPH0634551A
公开(公告)日：1994-02-08
申请号：JP21563192
申请日：1992-07-21
申请人： FUJIKURA LTD
发明人： IMAI TAKAYUKI , NAKAYAMA SHIRO , KUNIMURA SATOSHI , TAKAHASHI KATSUHIKO
IPC分类号： G01N21/59 , G01N21/78
摘要： PURPOSE:To obtain a gas sensor of which the mechanical strength is improved, in particular, relating to the gas sensor using an optical fiber. CONSTITUTION:A gas sensor measures the concentration of gas by detecting a change in the optical properties of a solution containing a dye of which the optical properties change is response to a gas to be measured. A cell 15 formed partially of a gas-permeable film 14 is filled with the solution. At least one optical fiber 11 for projecting and sensing light is led into the cell 15. The cell 15 is made up of a porous transparent rod-shaped body 12 and at least 60% or above of the transparent rod-shaped body 12 is covered with the gas- permeable film 14, while the end face of the optical fiber 11 is bonded to an exposed part of the transparent rod-shaped body 12 not covered with the gas- permeable film, with a bonding layer 16 interlaid. Besides, the area extending from the exposed part of the transparent rod-shaped body 12 including the bonded part over to the outer periphery of the end face of the optical fiber is covered with a sealing material 13.

9. 发明专利

JPH0634550A GAS SENSOR 失效
公开(公告)号：JPH0634550A
公开(公告)日：1994-02-08
申请号：JP21563092
申请日：1992-07-21
申请人： FUJIKURA LTD
发明人： IMAI TAKAYUKI , NAKAYAMA SHIRO , KUNIMURA SATOSHI , TAKAHASHI KATSUHIKO
IPC分类号： G01N21/59 , G01N21/78
摘要： PURPOSE:To obtain a gas sensor of which the lifetime is prolonged, in particular, relating to the gas sensor using an optical fiber. CONSTITUTION:A gas sensor measures the concentration of gas by detecting a change in optical properties of a solution 16 containing a dye of which the optical properties change in responce to a gas to be measured. A cell 15 formed partially of a gas-permeable film 14 is filled with the solution 16. At least one optical fiber 11 for projecting and sensing light is led into the cell 15. At least two thin pipes 21 and 22 for circulating the solution 16 are led into the cell 15 and thereby the concentration of the dye in the solution 16 is kept at 10 to 10 mol/lit. By keeping this concentration of the dye, excellent sensor characteristics of high precision and long life can be obtained.

10. 发明专利

JPH05248936A 失效
公开(公告)号：JPH05248936A
公开(公告)日：1993-09-28
申请号：JP4733592
申请日：1992-03-04
申请人： FUJIKURA LTD
发明人： KUNIMURA SATOSHI , NAKAYAMA SHIRO , TAKAHASHI KATSUHIKO , IMAI TAKAYUKI
IPC分类号： G01H11/08
摘要： PURPOSE:To provide a piezo electric vibration sensor device which is free from rise of the cutoff frequency even if it is laid in a high humidity atmosphere and which has a wide measurable frequency region. CONSTITUTION:A piezo electric vibration sensor device comprises a pedestal 2, a sensing part 3' which is secured to the measuring surface perpendicular to the sensing axis G of the pedestal 2 and formed by pinching the two surfaces of a film-form piezo electric body by electrodes and pinching the two surfaces thereof by support plates, a piezo type vibration sensor 1 having a load body 4 consisting of a rigid body acting as an inertia mass part fixed onto the sensing part 3', and an impedance converter circuit 10 which processes the electric output from the film-form piezo electric body, wherein the mentioned components are arranged in a hollow package 7. The surface of the sensing part 3' is covered with a polyparaxylilene thin film of a uniform thickness within the range 0.5 to 5mum.

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