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1. 发明专利

JPH08233111A BRAID PACKING 失效
公开(公告)号：JPH08233111A
公开(公告)日：1996-09-10
申请号：JP3643495
申请日：1995-02-24
申请人： NICHIAS CORP , NIPPON RIIKURESU KOGYO KK
发明人： YOSHIMOTO SENTARO , KURASHINA YOSHIMICHI , TAKAHIRA MITSURU , HIROBE KIICHI
IPC分类号： F16J15/22 , D04C1/02 , D04C1/06
摘要： PURPOSE: To provide a braid packing which can reduce the handle torque of a shaft seal device, and can prevent a sticking phenomenon. CONSTITUTION: Inside a hollow cord form braid 4 made by braiding over braid and 8-carrier braiding the threads of a main fiber or an auxiliary fiber, a center core material 5 is filled, and after forming in a square rod form, it is formed in a ring form, so as to obtain a braid packing 6. And 10 to 40% of the threads composing the facing 4 of the braid packing 6 are made of threads 7 having an excellent lubricative property or an excellent sealing property, so as to compose such a braid packing 6.

2. 发明专利

JPH10281296A PACKING 失效
公开(公告)号：JPH10281296A
公开(公告)日：1998-10-23
申请号：JP9663897
申请日：1997-03-31
申请人： NICHIAS CORP , NIPPON LEAKLESS CORP
发明人： WATANABE KATSUMI , YOSHIMOTO SENTARO , TAKAHIRA MITSURU
IPC分类号： F16J15/22 , D04C1/06 , F16J15/24
摘要： PROBLEM TO BE SOLVED: To provide an expansion graphite packing to having a high compression amount and restoration amount, excellent in sealing ability on the working condition of a low fastening pressure. SOLUTION: Heat resisting fibers, such as flame resisting fibers, carbon fibers, glass fibers, or ceramic fibers, having a tensile elastic modulus of 3.0×10 kgf/mm or less are bundled or braided to form a string-form substance, which is used as an inner core 1. A plurality of weaving threads 2 formed such that a tape made of expansion graphite the periphery of which is covered with reinforcing fibers are braided to form a string-form packing 3. Further, the string-form packing 3 is compression-molded in an annular shape to form a ring-form packing.

3. 发明专利

JP2530534B2 失效
公开(公告)号：JP2530534B2
公开(公告)日：1996-09-04
申请号：JP27677591
申请日：1991-09-27
申请人： NICHIAS CORP
发明人： YOSHIMOTO SENTARO , SUZUKI SHINZABURO , TAKADA HIROSHI , OOWAKI AKINORI
IPC分类号： F16J15/22

4. 发明专利

JPH05106741A PACKING AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JPH05106741A
公开(公告)日：1993-04-27
申请号：JP27677591
申请日：1991-09-27
申请人： NICHIAS CORP
发明人： YOSHIMOTO SENTARO , SUZUKI SHINZABURO , TAKADA HIROSHI , OWAKI AKINORI
IPC分类号： F16J15/22
摘要： PURPOSE:To provide a packing provided with appropriate flexibility and compressibility, good adaptability into a stuffing box, high adaptability and sealing performance under low clamping pressure, and superior removability after its use by means of a packing tool. CONSTITUTION:An elastic graphite tape 1 of a width not less than 6mm is covered with a knitted bag body 2 of fiber material to form knitting yarn A. The graphite tape 1 is subjected to plastic deformation into a shape curling in the direction of width, by means of the knitted bag body 2 which is narrowed by longitudinally elongating the knitting yarn A. Furthermore, both the end portions in width of the graphite tape are projected from stitches of the knitted bag body 2 to form serrate projections 1b. Then, plural pieces of the knitting yarn is braided by a braiding machine into a cord to form a packing 3. The graphite projections 1b are plastically deformed into scales as illustrated with a symbol 1c by tensile force and twisting force acting onto the knitting yarn A at the time of braiding, so that the fiber is filled and covered with graphite almost completely.

5. 发明专利

JPH09280379A KNITTING YARN FOR PACKING AND PACKING 失效
公开(公告)号：JPH09280379A
公开(公告)日：1997-10-28
申请号：JP11847496
申请日：1996-04-16
申请人： NICHIAS CORP , NIPPON LEAKLESS CORP
发明人： SAITO SHIGERU , YOSHIMOTO SENTARO , KURASHINA YOSHIMICHI
IPC分类号： F16J15/22 , D04B21/20
摘要： PROBLEM TO BE SOLVED: To eliminate a need for bending and a secondary reinforcing material and to improve sealing ability by a method wherein a knitting yarn consists of composite structure comprising an expansion graphite tape being a single layer and formed in a sheet-form manner on a whole and having a specified thickness and width increased specified times as long as the thickness; and a reinforcing material formed of knitted or braided substance. SOLUTION: A using expansion graphite tape 1 is a single layer and formed in a sheet-form manner on a whole and the thickness (a) thereof is set to 0.38mm or more, and width (b) is also set in a range of 3-25 times as large as the thickness. This constitution provides a strength to prevent the occurrence of breakage during braiding and prevents a sectional area from being increased not more than necessary to a knitting yarn (prevents the increase of the size of a yarn). The whole of the outer periphery of the surface of the tape 1 is covered with a reinforcing material 2, such as a fine metallic wire, a metal netting, metallic fibers, and yarns and fibers, through braiding or knitting to form a knitting yarn 3 for packing. The knitting yarns 3 are braided to produce a string-form packing or formed in an annular state for molding.

6. 发明专利

JPH0587248A MOLDED PACKING AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH0587248A
公开(公告)日：1993-04-06
申请号：JP27677491
申请日：1991-09-27
申请人： NICHIAS CORP
发明人： YOSHIMOTO SENTARO , SUZUKI SHINZABURO , TAKADA HIROSHI , OWAKI AKINORI
IPC分类号： F16J15/22
摘要： PURPOSE:To provide molded packing which utilizes a characteristic of flexible graphite to the fullest, and is good in storability to a stuffing box in addition to takeout workability by a packing tool after use, plus excellent in fittability and sealability under low clamping pressure. CONSTITUTION:A flexible graphitic tape 1 of more than 6mm in width and a knitted bag body 2 consisting of a fiber material covered on the tape 1 both are extended in the longitudinal direction, whereby this knitted bag body is gathered thin, and the graphitic tape is plastically deformed into curl form in the cross direction, while a strip material being made up of projecting the cross direction both edge partsto serration from stitches of the knitted bag body is set down to a molded blank, rolling this blank into a forming die, and compressed and molded into molded packing 7. Since flexibility, compressibility and shaft-fittability are all good enough and reinforced with the knitted bag body, stowability to a stuffing box and takeout workability by a packing tool after use are all also good enough.

7. 发明专利

JP2530533B2 失效
公开(公告)号：JP2530533B2
公开(公告)日：1996-09-04
申请号：JP27677491
申请日：1991-09-27
申请人： NICHIAS CORP
发明人： YOSHIMOTO SENTARO , SUZUKI SHINZABURO , TAKADA HIROSHI , OOWAKI AKINORI
IPC分类号： F16J15/22

8. 发明专利

JPH08210569A ELECTRICAL INSULATING GASKET 失效
公开(公告)号：JPH08210569A
公开(公告)日：1996-08-20
申请号：JP3282195
申请日：1995-01-31
申请人： NICHIAS CORP
发明人： YOSHIMOTO SENTARO , MAJIMA TOMOO
IPC分类号： F16L23/02
摘要： PURPOSE: To provide a high temperature serving electrical insulating gasket that combines both excellent sealing and electrical insulating properties under the condition of high temperature and pressure. CONSTITUTION: A metal outer ring 21 is fitted in the outer circumferential side of a spiral-wound gasket body 20, and a section square joint-sheet ring connecting member 22 is fitted in the inner circumferential surface, using them as a core member, and two ring outer cover plates 24 made of filler-mixed PTFE each are superposed on the contact surface of this center member to a piping flange 23 in a sandwiching manner, then these outer cover plates 24 are unified to the connecting member 22 after bonding with a binder 25. Since this filler-mixed PTFE ring outer over plate is excellent in both heat and flow resistant properties in particular, it synergistically acts together with a characteristic of the spiral-wound gasket body or the core member, so excellent sealability is brought into full play under the condition of high temperature and pressure. Moreover, since the outer cover plate covers the metal outer ring, there is no problem as to the electrical insulating property.

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