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1. 发明专利

JPH08326979A BRANCH PIPE COUPLING FOR COMMUNICATION CABLE AND PROTECTIVE PIPE FOR COMMUNICATION CABLE 失效
公开(公告)号：JPH08326979A
公开(公告)日：1996-12-10
申请号：JP13515695
申请日：1995-06-01
申请人： KUBOTA KK , NIPPON TELEGRAPH & TELEPHONE
发明人： KATAGIRI MAKOTO , IWATA TAKASHI , HORIKAWA KAZUTO , YAJIMA SHUNJI , ODAKA HEIZO , YOSHINARI YOSHIHITO
IPC分类号： F16L41/02
摘要： PURPOSE: To allow to branch wire communication cables from two directions simply and at a low cost, by providing the first and the second bent pipes whose pipe ends are directed in the direction orthogonal to the axis of a main pipe, to the first and the second branch pipes branching at an acute angle to the axis of the main pipe. CONSTITUTION: A branch pipe coupling 10 to distributing wire a communication cable to connect a CATV, a cable broadcasting, and the like, and customers 12, and a communication cable to connect customers each other, from a main pipe, is composed by connecting the first and the second bent pipes 20a and 20b to a coupling main body 18. In the coupling main body 18, the first and the second branches 24a and 24b branching at an acute angle to the axis of the main pipe are provided integrally extending in the directions opposing each other, on the outer surface of a saddle 22. And the bent pipes 20a and 20b have a bending property, and have bellows form of bent pipes 28a and 28b which are bent at a curvature radius of a tolerable bending radius or more than the tolerable bending radius. At both ends of the bent pipes 28a and 28b, sockets 30a and 30b, and spigots 32a and 32b, are formed respectively.

2. 发明专利

JP2000081186A SNAP TAP WITH SADDLE 失效
公开(公告)号：JP2000081186A
公开(公告)日：2000-03-21
申请号：JP24961898
申请日：1998-09-03
申请人： KUBOTA KK
发明人： NAKAMURA RYOICHIRO , HIRAFUJI TAKEFUMI , KATAGIRI MAKOTO , OMURO HIDEKI
IPC分类号： F16L41/02 , F16L41/08
摘要： PROBLEM TO BE SOLVED: To absorb a stress generated at a line with high efficiency, besides to prevent desorption of a drum part from a cylindrical part, and to prevent the damage of the line and leakage of water. SOLUTION: The cylindrical part 28 of a saddle 16 and the drum part 42 of a snap tap 18 are joined together through a rubber ring 38. Thereby, when the force in a radial direction of a water distribution pipe 12 is exerted on the joint, the drum part 42 is pulled out from the cylindrical part 28, the drum part 42 is pressed in the cylindrical part 28, and the force is absorbed. Further, when a force in a bending direction is exerted on the joint, the drum part 42 is inclined based on the cylindrical part 28 and the force is absorbed. Further, when a force is exerted in a direction in which the snap tap 18 is rotated, the drum part 42 is rotated and the force is absorbed. When the drum part 42 is pulled out from the cylindrical part 28 by a given length, an engaging part 48 is locked at a lock part 40, and desorption of the drum part 42 from the cylindrical part 28 is prevented from occurring.

3. 发明专利

JPH093926A UNDERGROUND STRUCTURE AND DESIGN METHOD FOR UNDERGROUND STRUCTURE 失效
公开(公告)号：JPH093926A
公开(公告)日：1997-01-07
申请号：JP14983295
申请日：1995-06-16
申请人： KUBOTA KK
发明人： KATAGIRI MAKOTO
IPC分类号： E02D29/00
摘要： PURPOSE: To prevent floating of a manhole simply at low cost. CONSTITUTION: An overhang section 20 is formed on an outer face of a manhole main body 14 in such a manner that it is positioned in a non-liquefaction layer. When buoyancy that a manhole 10 receives from a liquefaction layer is F, the weight of the manhole is F1 , the weight of earth and sand 24 above the overhang section 20 is F2 , and shearing resistance force between the earth and sand 24 and its peripheral ground is F3, the length δ of the overhang section 20 and the depth h from the ground level to the overhang section 20 are set to satisfy an equation F1 +F2 +F3 >=F.

4. 发明专利

JP2000055279A SNAP TAP WITH SADDLE 失效
公开(公告)号：JP2000055279A
公开(公告)日：2000-02-22
申请号：JP22570198
申请日：1998-08-10
申请人： KUBOTA KK
发明人： HIRAFUJI TAKEFUMI , KATAGIRI MAKOTO , OMURO HIDEKI , NAKAMURA RYOICHIRO
IPC分类号： F16L41/02 , F16L41/08
摘要： PROBLEM TO BE SOLVED: To prevent leakage of water at a connecting part of a snap tap with a saddle and a water pipe. SOLUTION: A lightening part 28 larger than a water passing hole 30 in the axial direction and in the peripheral direction of a water pipe 12 is formed on an inner surface of a saddle. When external force works on the water pie 12 or a water supply pipe by ground displacement, stress is generated on a connecting part of a snap tap with the saddle and the water pipe 12, relative displacement is generated between them, but as the lightening part 28 is larger than the water passing hole 30, there is no trouble of a communicating property between the water passing hole 30 and the lightening part 28 being immediately cut off.

5. 发明专利

JPH109479A PROTECTING BOX FOR PIPE LINE BRANCH PART AND BURIED PIPE LINE 失效
公开(公告)号：JPH109479A
公开(公告)日：1998-01-13
申请号：JP15947396
申请日：1996-06-20
申请人： KUBOTA KK
发明人： KIMURA MASAO , KATAGIRI MAKOTO
IPC分类号： F16L1/024 , F16L57/00
摘要： PROBLEM TO BE SOLVED: To inexpensively prevent the damage of a branch part and a branch pipe at the time of an earthquake. SOLUTION: A pipe line branch part protecting box 10 having a pair of the first opposed side walls 20, a pair of the second opposed side walls 22 for connecting the first side walls 2, and a roof 26 for connecting the upper ends of the first side wall 20 and of the second side wall 22 is arranged so as to cover a snap tap 14 being a branch part between a water distributing pipe 12, namely a main pipe, and a water supply pipe 16, namely the branch pipe of the main pipe. The protecting box 10 is connected to the snap tap 14 from an opening 24 formed on one side of the second side wall 22 through the water supply pipe 16. Even in the case where the water distributing pipe 12 is moved in the direction of a pipe axis by the displacement of the ground due to an earthquake, since the snap tap 14 protrusively provided on the water distributing pipe 12 moves inside the hollow protecting box 10, load caused by soil does not act on the periphery of the snap tap 14.

6. 发明专利

JPH09303643A VALVE CHEST HAVING EXPANSIVE/CONTRACTIVE JOINT 失效
公开(公告)号：JPH09303643A
公开(公告)日：1997-11-28
申请号：JP11352496
申请日：1996-05-08
申请人： KUBOTA KK
发明人： KIMURA MASAO , KATAGIRI MAKOTO
IPC分类号： F16K51/00 , F16L27/12
摘要： PROBLEM TO BE SOLVED: To prevent a breakage in a water works pipe line and easily restore its uncoupled location. SOLUTION: When a water works pipe line 12 is axially displaced resulting from land displacement caused by an earthquake or the like, the axial displacement is absorbed by an expansive/contractive joint 34 contained in a valve chest 10. When the water works pipe line 12 is further displaced over the displacement-absorbing capacity of the expansive/contractive joint 34, a short pipe 32a or 32b is extracted from the expansive/contractive joint 34 to uncouple a water works pipe 12a or 12b respectively.

7. 发明专利

JPH06323469A BEHAVIOR ANALYSIS METHOD FOR UNDERGROUND PIPELINE 失效
公开(公告)号：JPH06323469A
公开(公告)日：1994-11-25
申请号：JP11334893
申请日：1993-05-14
申请人： TAKADA SHIRO , KUBOTA KK
发明人： TAKADA SHIRO , NIIMI TATSUHIKO , KATAGIRI MAKOTO , TANIGAWA SHINICHI
IPC分类号： F16L1/024 , G01V1/28
摘要： PURPOSE:To make possible more realistic and short-time analysis by modeling straight pipes and a curved pipe of a pipeline respectively by a cylinder shell model, and carrying out operation on respective physical quantities of the pipeline by a correction transmitting matrix into which disturbed data is considered after the disturbed data of the ground by an earthquake is inputted. CONSTITUTION:One end of the first straight pipe 21 is installed in a structure 1, and the other end of this is installed on one end of a curved pipe 4 by the first joint 31. The other end of the curved pipe 4 is installed on one end of the second straight pipe 22 by the second joint 32, and the other end of this is made free. Behavior against an earthquake of a pipeline buried underground in this way is analyzed. In this case, in the first place, the straight pipes 21 and 22 and the curved pipe 4 are modeled respectively by a cylinder shell model. Next, disturbed data of the ground by the earthquake, for example, a spring constant of the ground or displacement of the earthquake and the like are inputted. In succession, by a correction transmitting matrix into which the disturbed data is considered, operation is carried out on respective physical quantities of the pipeline, for example, on pipe shaft directional stress, circumferential directional stress and circumferential directional shearing force and the like.

8. 发明专利

JPH0366836A DESIGN PROCESS FOR PIPING AT STRUCTURE 失效
公开(公告)号：JPH0366836A
公开(公告)日：1991-03-22
申请号：JP20349789
申请日：1989-08-04
申请人： KUBOTA KK , TAKADA SHIRO
发明人： TAKADA SHIRO , KATAGIRI MAKOTO
IPC分类号： E02D31/08 , F16L1/024
摘要： PURPOSE:To prevent breakage due to liquefying phenomenon by setting the floatup preventive construction method for a structure in case the structure is afloat resulting from the liquefying phenomenon, presuming the amount of ground settling, and judging whether the obtained amount is below a certain tolerable value or not. CONSTITUTION:In advance the buoyancy applied to a manhole and a pipeline connecting thereto is calculated together with the amount of ground settling, and if it is judged that a structure concerned is afloat due to the liquefying phenomenon, a floatup preventive construction method for the structure is set. Further the amount of ground settling due to liquefying phenomenon is presumed, and it shall be judged whether the amount of ground settling remains below a certain allowable value for a liquefication-countermeasured pipe. In this procedure the design is pushed forward, and the ground liquefying phenomenon generated by an earthquake and the external force originating therefrom are presumed accurately, and a well-countermeasured method for execution of works is adopted for the structure and associate pipelines.

9. 发明专利

JPH0953775A BURIED PIPE LINE 失效
公开(公告)号：JPH0953775A
公开(公告)日：1997-02-25
申请号：JP10499196
申请日：1996-04-25
申请人： KUBOTA KK
发明人： KIMURA MASAO , KATAGIRI MAKOTO
IPC分类号： E21D11/08 , F16L1/024 , F16L27/12
摘要： PROBLEM TO BE SOLVED: To quickly restore a pipe by sufficicntly absorbing ground displacement, and easily finding out a separated place even when the pipe separates since the ground displacement cannot be absorbed. SOLUTION: In case where ground displacement is caused, when a ground displacement quantity δ is smaller than ground displacement absorbing capacity δmax (δmax =3.δ1 +δ2 ) of a buried pipe line 10, the ground displacement is completely absorbed by a first extensible-contractible joint 12 and a second extensible- contractible joint 16. On the other hand, when the ground displacement quantity δis larger than the ground displacement absorbing capacity δmax of the butied pipe line 10, a pipe 14 separates in the second extensible-contractible joint 16.

10. 发明专利

JPH08338576A DISCONNECTION PREVENTING FIXTURE AND DISCONNECTION PREVENTING JOINT 失效
公开(公告)号：JPH08338576A
公开(公告)日：1996-12-24
申请号：JP14438695
申请日：1995-06-12
申请人： KUBOTA KK
发明人： YAMAGUCHI HIDEMI , KATAGIRI MAKOTO
IPC分类号： F16L21/08 , F16L27/12
摘要： PURPOSE: To absorb unevenness in initial positions of a first member and a second member which are adapted to be engaged and prevented from being disconnected from each other by a disconnection preventing fixture, by providing a positioning member made of an easily deformable material for determining the initial positions of the first and second members. CONSTITUTION: A disconnection preventing fixture 12 connects a first member 16 and a second member 20 which are fixed to the outer surfaces of an expandable joint 10 and a pipe 14, respectively, together through a connecting rod 18. The expandable member 10 includes a socket 10a for receiving the pipe 14, and the first member 16 is formed in a split ring shape along the outer surface of the socket 10a, one split piece 16a and the other split piece 16b are formed on the outer surfaces of their joint parts with engaging parts 22a, 22b. Further, the second member 20 is formed in a split ring shape along the outer surface of the outer surface of the pipe 14, one piece 20a and the other piece 205 are formed on the outer surface of their joint parts with engaging part 24a, 24b. Further, a coil spring 36 for determining initial positions of the first and second members 16, 20 is fitted on the outer periphery of an end part of a body 18a on the engaging part 34 side.

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