专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH0427645B2 失效
公开(公告)号：JPH0427645B2
公开(公告)日：1992-05-12
申请号：JP18162190
申请日：1990-07-11
申请人： FUJIKURA LTD
发明人： YOSHINUMA MIKIO , SUZUKI MASAHIRO , HATASA KAZUHIRO
IPC分类号： B65H81/06 , H01B13/26

2. 发明专利

JPH02296004A GAS PIPING MECHANISM 失效
公开(公告)号：JPH02296004A
公开(公告)日：1990-12-06
申请号：JP11485489
申请日：1989-05-08
申请人： FUJIKURA LTD
发明人： HATASA KAZUHIRO
IPC分类号： F15D1/02
摘要： PURPOSE:To securely feed gas to a gas receiving part by providing both an auxiliary gas supply and an auxiliary piping so that the auxiliary piping is connected to the primary piping at a prescribed acute angle, and on the auxiliary piping side directly before the connecting part, by forming a part where the inside diameter is constricted. CONSTITUTION:Since the pressure of a material gas in the supply part 1 is maintained lower than that in the receiving part 2, an auxiliary gas supply part 3 is provided for feeding the material gas to the receiving part. The auxiliary gas supply part 3 is provided with a cylinder in which an inert gas is filled in a high-pressure condition, and the inert gas is fed to the connecting part 6 of a piping 4 through an auxiliary piping 5. In the auxiliary piping 5, a constricted part 5a is formed directly before the connecting part 6, and the auxiliary piping 5 is connected to the piping 4 at a prescribed acute angle. Thus, in the piping 4, a negative pressure due to the injection of the above inert gas is caused directly before the connecting part 6, thereby the material gas on the supply part 1 side is securely fed to the receiving part 2.

3. 发明专利

JPH02217330A METHOD AND APPARATUS FOR FEEDING SILICON TETRACHLORIDE RAW MATERIAL GAS 失效
公开(公告)号：JPH02217330A
公开(公告)日：1990-08-30
申请号：JP3767989
申请日：1989-02-17
申请人： FUJIKURA LTD
发明人： HATASA KAZUHIRO
IPC分类号： C03B37/018 , B01J4/00 , C03B37/014
摘要： PURPOSE:To enable sufficient feed of a raw material gas to a burner by passing and heating gasified SiCl4 through a heating pipe and then feeding the resultant gas through a flexible pipe to the burner in preparing quartz glass fiber. CONSTITUTION:A feeder for SiCl4 raw material gas is provided with a construction in which a heating pipe 11 is arranged in place of a conventional heat insulating pipe and a heat insulating material and a tape heater are removed from a flexible pipe 8. In preparing quartz glass fiber by using the resultant feeder, SiCl4 2 in a producer 1 is heated and a carrier gas of an inert gas is introduced thereinto to carry out bubbling and gasify the SiCl4. After regulating the flow rate, the gasified SiCl4 is then discharged into the heating pipe 11 and heated at a suitable temperature by heating control with a heating tape (11b), passed through the flexible pipe 8 and introduced into a burner 10. The pipe 8 is capable of sufficiently following up movement of the burner 1 because of sufficient flexibility thereof.

4. 发明专利

JPH02199038A DEHYDRATING AND SINTERING FURNACE OF POROUS GLASS PERFORM 失效
公开(公告)号：JPH02199038A
公开(公告)日：1990-08-07
申请号：JP1623289
申请日：1989-01-27
申请人： FUJIKURA LTD
发明人： HARADA KOICHI , EMORI SHIGERU , HATASA KAZUHIRO
IPC分类号： C03B37/014
摘要： PURPOSE:To improve stabilization of pressure in a specific muffle tube by equipping a balloon buffer for cushioning pressure with a variable balloon buffer volume means acting corresponding to pressure signal from a pressure monitor. CONSTITUTION:A balloon buffer 10 for cushioning pressure which is provided with a heater 4 and fixed to a top opening 2d of a muffle tube 2 to store a porous glass preform 1 is connected to a variable buffer volume means 12 consisting of a valve 14 and a pump 16 and to a pressure monitor consisting of a differential pressure gauge 20 and an amplifier 22 fixed to a top opening 2e. During dehydrating and sintering, when pressure is made >= a set value by a gas supplied to the muffle tube 2, a signal is started from the pressure monitor, the valve 14 is opened and closed, the gas is exhausted by the pump 16 and rise in pressure in the muffle tube is suppressed. After the dehydrating and sintering, an exhaust pump is operated, the balloon buffer 10 is completely shrunk and poisonous gas in the interior is completely removed.

5. 发明专利

JPS61159220A MANUFACTURE OF PIPE WITH FIN 失效
公开(公告)号：JPS61159220A
公开(公告)日：1986-07-18
申请号：JP27658584
申请日：1984-12-29
申请人： FUJIKURA LTD
发明人： HATASA KAZUHIRO , YOSHINUMA MIKIO , WATANABE ETSURO
IPC分类号： B21C37/26 , B21D53/06 , B21D53/08 , F28F1/36
摘要： PURPOSE:To give a rigidity to a fin and to fix strongly the fin to a pipe by crushing the side edge part of the position to become the outer peripheral part of the fin in case of winding the metallic tape on which a corrugation is formed to the pipe. CONSTITUTION:The continuous corrugation having an equal pitch is formed with pressing both faces of a metallic tape 2 by a corrugator 3. The start end part of the metallic tape 2 which passed through the corrugator 3 is fixed to a pipe 1 with its state of intersecting at right angles with the pipe axle and the metallic tape 2 is spirally wound with rotating the pipe 1. The side edge part of the position to become the outer peripheral part of a fin 6 is then flattened with crushing by a rolling device 5. The fin 6 is then fixed in the state of being passed to the pipe 1 by giving a rigidity to the fin 6 also by acting a compression force on the inner peripheral part thereof. The fin 6 therefore comes in close contact with the pipe 1 with its becoming in standing state automatically on being crushed of the outer peripheral part.

6. 发明专利

JPH02307839A DEVICE FOR PRODUCING OPTICAL FIBER PREFORM 失效
公开(公告)号：JPH02307839A
公开(公告)日：1990-12-21
申请号：JP12977889
申请日：1989-05-23
申请人： FUJIKURA LTD
发明人： WADA ROU , NAKAYAMA KOYO , HATASA KAZUHIRO , SASAGAWA TOSHIKATSU
IPC分类号： G02B6/00 , C03B37/014 , C03B37/018
摘要： PURPOSE:To increase the growth rate of an optical fiber preform by providing an annular path for circulating plural burners on a traverse rail. CONSTITUTION:Plural burners 18, 19, 32 and 33 are successively moved at a specified velocity on a common linear path A' (=B') along a core 1a at regular intervals from one end of the core 1a to the other end, and a combustion gas is blown on the core to grow a preform 1 on the core 1a. The burners 18, 19, 32 and 33 are separately driven by driving carriages 10, 11, 23 and 24 with motors 12, 13, 25 and 26. When a burner reaches the other end of the core 1a, the blowing of the combustion gas is stopped, and the burner is returned to the one end through the return paths A and B.

7. 发明专利

JPH0251436A DEHYDRATING SINTERING FURNACE FOR MOTHER MATERIAL OF OPTICAL GLASS 失效
公开(公告)号：JPH0251436A
公开(公告)日：1990-02-21
申请号：JP20057888
申请日：1988-08-11
申请人： FUJIKURA LTD
发明人： HATASA KAZUHIRO , HARADA KOICHI
IPC分类号： C03B37/014
摘要： PURPOSE:To keep the pressure of a muffle in a stable state by controlling the quantity of gas supplied into the muffle according to the pressure in the muffle. CONSTITUTION:Inert gas sent through a passage 3a of a gas supply mechanism 3, and a dehydrating agent, such as Cl2, sent through a passage 3b are supplied from a lower part of the muffle 2, and the pressure in the muffle 2 is measured by a pressure sensor 10 of a control mechanism 13 mounted in a branch pipe 2c to be converted into an electric signal, which is transmitted to a PID controller 11, and a control signal is issued from the controller 11 to a flow-rate controller 12, and the flow rate of the inert gas flowing through the passage 3a is controlled thereby. When the pressure in the muffle 2 is changed, the pressure sensor 10 of the control mechanism 13 detects the pressure change, and the gas supply quantity to the muffle 2 is controlled thereby so that the pressure in the muffle 2 is restored to a specified value.

8. 发明专利

JPS61140005A Apparatus for manufacturing interlock armor 失效
标题翻译：制造联锁装置的装置
公开(公告)号：JPS61140005A
公开(公告)日：1986-06-27
申请号：JP26225584
申请日：1984-12-12
申请人： Fujikura Ltd
发明人： YOSHINUMA MIKIO , SUZUKI MASAHIRO , HATASA KAZUHIRO
IPC分类号： H01B13/26 , B65H81/00

9. 发明专利

JPH03223133A DEHYDRATION SINTERING FURNACE 失效
公开(公告)号：JPH03223133A
公开(公告)日：1991-10-02
申请号：JP1958290
申请日：1990-01-30
申请人： FUJIKURA LTD
发明人： HATASA KAZUHIRO , NAKAYAMA KOYO , SASAGAWA TOSHIKATSU
IPC分类号： C03B37/014 , C22B1/20 , F27D11/02
摘要： PURPOSE:To eliminate the need of installing a heater in an inert gas and enable uniform heating of soot by providing the heater composed of a specific material near the outer side of the soot installed in the central part in a furnace so as to afford a uniform heat distribution in the longitudinal direction in the furnace. CONSTITUTION:Vapor of a glass material is deposited on the periphery of a dummy rod 1 to produce a soot 2, which is then placed in the central part of a dehydration sintering furnace. A heater 4 composed of silicon carbide or a material having an oxide film formed on the silicon carbide or molybdenum disilicide or a material having an oxide film formed on the molybdenum disilicide is provided on the outside and near the side of the soot 2 so as to provide nearly a uniform heat distribution in the longitudinal direction in the furnace. Furthermore, a heat insulating material 5 is provided on the outside of the heater 4 to heat the soot with the heater 4, homogeneously dehydrate and sinter the soot 2. Thereby, the set temperature of the heater 4 can be decreased and dehydration sintering time can be shortened.

10. 发明专利

JPH0340941A COATING METHOD FOR OPTICAL FIBER 失效
公开(公告)号：JPH0340941A
公开(公告)日：1991-02-21
申请号：JP17512189
申请日：1989-07-06
申请人： FUJIKURA LTD
发明人： SASAGAWA TOSHIKATSU , HATASA KAZUHIRO , WADA AKIRA
IPC分类号： G02B6/44 , C03C25/10 , C03C25/12
摘要： PURPOSE:To accurately supply coating material according to the wire drawing velocity of optical fiber by introducing both the raw liquid of coating material and a curing agent into the separately sealed vessels and exerting gas pressure to force-feed them to a two-layer die spot via the respective carrier pipes. CONSTITUTION:The raw liquid I of coating material is introduced into a sealed vessel 20 and a curing agent II is introduced into the other sealed vessel 21. Inert gas is supplied to the sealed vessels 20, 21 respectively via the feed pipes 22, 23 of gas pressure. The raw liquid I and the curing agent II are separately force-fed to a two-layer die spot 26 via the carrier pipes 24, 25 and thereafter discharged from the die spot 26. The bare wire of optical fiber which is wire- drawn and passed on the central axial line of the die spot 26 is applied with the raw liquid I and the curing agent II. When the gas pressure of the sealed vessels 20, 21 is changed according to the wire drawing velocity, the application volume of the coating material discharged from the die spot 26 accurately is obtained.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式