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1. 发明专利

JPH07138903A ELASTIC MAT FOR UNDERSIDE OF SLEEPER 失效
公开(公告)号：JPH07138903A
公开(公告)日：1995-05-30
申请号：JP30755393
申请日：1993-11-12
申请人： NIPPON ERASUTAA KK
发明人： NAKAMURA KIHEI
IPC分类号： E01B19/00 , E01B3/46
摘要： PURPOSE:To provide a sleeper to which an elastic mat is bonded so that quarried stones can not be crushed easily into small pieces and lateral slippage of sleeper can be avoided, and further productivity of elastic mat having durability can be improved. CONSTITUTION:The central portion 1a of an elastic mat 1 is made thinner than the opposite end portions 1b, and the central portion 1a is made from an elastic material softer than those of the opposite end portions 1b. And by the elastic mat 1 is vulcanized and simultaneously the central portion of the elastic mat is bonded to the thick opposite end portions by vulcanization.

2. 发明专利

JPH08144204A VIBRATIONPROOF ELASTIC MEMBER FOR CONCRETE SLEEPER AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH08144204A
公开(公告)日：1996-06-04
申请号：JP30959794
申请日：1994-11-18
申请人： NIPPON TETSUDO KENSETSU KODAN , ORIENTAL CONSTR CO LTD , NIPPON ERASUTAA KK
发明人： KITAHARA ISAMU , KOBAYASHI SHOICHI , GOTO TOYOJI
IPC分类号： E01B3/46 , B28B23/02 , E01B19/00
摘要： PURPOSE: To prevent the damage of resiliency by easily mounting a vibrationproof elastic body on a concrete sleeper while hindering the intrusion of concrete into an uneven space section for giving the elastic body resiliency. CONSTITUTION: In a vibrationproof elastic member, a plurality of pressure- receiving sections 2b consisting of an elastic body are protruded onto the bottom section of a bottom-section elastic body having a shape covering base of at least lateral end section of a concete sleeper 1 and a lower outer circumferential surface, and foamed plates 2d are installed to sections except a plurality of the pressure-receiving sections 2b on the bottom section of the bottom-section elastic body without clearances. The concrete sleeper is manufactured in such a manner that the forms 4 of the concrete sleeper 1 are arranged so that the underside of the sleeper is placed as a top face or a side face, the vibrationproof elastic members are mounted at both end sections of a top face or a side face in the forms 4, ready-mixed concrete is placed in the forms 4, and the concrete sleeper with the vibrationproof elastic members is obtained by extracting concrete from the forms 4 after concrete is cured.

3. 发明专利

JPH081646A CONCRETE PRODUCT WITH ELASTIC COVERING MATERIAL, AND ITS PRODUCTION 失效
公开(公告)号：JPH081646A
公开(公告)日：1996-01-09
申请号：JP15678394
申请日：1994-06-15
申请人： NIPPON ERASUTAA KK
发明人： SATO TOYOJI , MITSUI SHOICHI , NAKAMURA KIHEI
IPC分类号： E01B3/00 , B28B23/00
摘要： PURPOSE:To easily mount an elastic covering material on a concrete crosstie or the like and to bond them to each other without trapping air between the elastic covering material and the concrete surface. CONSTITUTION:In a concrete product with an elastic covering material, a plurality of projections 3 provided on an elastic covering material 2 are embedded in concrete, and the covering material and the outer surface of concrete are bonded to each other without trapping air at the interface thereof. In the production method of the concrete product, ready-mixed concrete is placed from an open surface of a concrete form 4, the elastic covering material 2 is applied to the surface of the ready-mixed concrete on the open surface of the form 4 before the ready-mixed concrete is hardened, and part of the elastic covering material 2 is embedded in the ready-mixed concrete while the outer surface of the elastic covering material 2 is vibrated by a vibrating machine 5.

4. 发明专利

JPH0892901A CONCRETE SLEEPER WITH TABULAR ELASTIC BODY AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH0892901A
公开(公告)日：1996-04-09
申请号：JP25746994
申请日：1994-09-27
申请人： NIPPON TETSUDO KENSETSU KODAN , ORIENTAL CONSTR CO LTD , NIPPON ERASUTAA KK
发明人： ICHINOWATARI YOSHITOMO , KOBAYASHI SHOICHI , MITSUI SHOICHI
IPC分类号： E01B3/28 , B28B1/08 , B28B23/00 , E01B19/00
摘要： PURPOSE: To keep the spring constant of a tabular elastic body at a fixed value, and to improve durability by preventing the intrusion of gravel and water to a bonding surface by fast sticking and bonding the tabular elastic body onto the bottom of a concrete sleeper without an air reservoir. CONSTITUTION: Tabular elastic bodies 2 are mounted on a concrete sleeper 1 through fixing materials 7, and the shape of a surface section, on which the tabular elastic bodies 2 are brought into contact with the bottom section of the concrete sleeper 1, is formed in inclined valley surfaces 4 while air vent holes 5 are formed near the bottoms of the inclined valley surfaces 4 of the tabular elastic bodies 2. The concrete sleeper 1 with the tabular elastic bodies is manufactured in such a manner that the tabular elastic bodies 2 are used, concrete is placed from the opening of the top face of forms for the sleeper formed so that the bottom of the sleeper is directed as the top face, and the mounting sides of the fixing materials 7 are directed downwards and the tabular elastic bodies 2 are pressed against the top face of the placed concrete from the top face of the forms. The fixing materials 7 are pushed into placed concrete while air in placed concrete is pushed out, guided to the inclined valley surfaces 4 of the tabular elastic bodies 2 and discharged from the air vent holes 5.

5. 发明专利

JPH03158501A BALLAST MAT 失效
公开(公告)号：JPH03158501A
公开(公告)日：1991-07-08
申请号：JP29718489
申请日：1989-11-15
申请人： NIPPON TETSUDO KENSETSU KODAN , FUKOKU KK , NIPPON ERASUTAA KK
发明人： KOBAYASHI SHOICHI , SUGAMURA JUN , ARAI KAZUO , SHIROGANE FUMIO , NAKAMURA KIHEI
IPC分类号： E01B19/00
摘要： PURPOSE:To increase sound and vibration insulation effects when a car is driving by constituting a ballast mat with an elastic body, providing a large number of recess portions divided by a partition wall on the lower surface of this ballast mat and laying this mat on railroad bed concrete. CONSTITUTION:A ballast mat 1 is composed of an elastic body such as rubber, synthetic resin, etc., and its upper surface is formed horizontal, while the lower surface is formed by a large number of recess portions 2 divided by a partition wall 2a. Moreover, recess portions 5, each of which is lower by a step, are provided between circumferential edges 4 and the recess portions 2 of the ballast mat 1, and a rhomboid recess parts 3 at the positions where four recess portions 2 are adjacent to each other. Then, the ballast 1 is laid with the recess parts 2 and 3 facing downward on a railroad bed 6, ballast 7 is provided, and rails 9 are laid through a tie 8. By this, vibration in driving of an electric railcar can be reduced.

6. 发明专利

JPH09159076A RING ELASTIC MEMBER AND FLEXIBLE JOINT FOR BAND 失效
公开(公告)号：JPH09159076A
公开(公告)日：1997-06-17
申请号：JP34492195
申请日：1995-12-06
申请人： NIPPON ERASUTAA KK
发明人： NAKAMURA KIHEI
IPC分类号： F16L27/02
摘要： PROBLEM TO BE SOLVED: To prevent water leakage generated by losing reaction for creep developed on an elastic material part caused by fastening force, etc., of a band for a flexible joint. SOLUTION: The shape of a ring elastic member 30 for an inside band for a flexible joint is so set as to be formed into a corrugated recessed/projecting shape in the approximately vertical direction to the plane surrounded by the ring. The aforementioned-shape ring elastic member is used at least one of the inside and outside bands of the flexible joint. Sealing projections 70 are provided on the contact face of the flexible joint with the pipe external circumferential face 20a and the contact face of a manhole side wall with the internal circumferential face 60a of a flexible joint internal insertion hole 60. It may be allowed if a belt elastic member is formed into a ring via an extension part whose elasticity in the circumferential length direction of the ring is larger than the belt elastic member so as to become a ring elastic member.

7. 发明专利

JPH06173208A FLOATING SLAB EXECUTING METHOD AND ITS SUPPORTING STRUCTURE 失效
公开(公告)号：JPH06173208A
公开(公告)日：1994-06-21
申请号：JP35122392
申请日：1992-12-07
申请人： NIPPON ERASUTAA KK
发明人： NAKAMURA KIHEI
IPC分类号： E01B37/00 , E01C9/00
摘要： PURPOSE:To simply execute a floating slab serving as a roadbed for an electric car and a vehicle without requiring a wide place by using a vibration-proof rubber core body and an extensile levelling jig, and to make the floating slab vibration-proof and its exchange easy by applying the vibration-proof rubber core body. CONSTITUTION:A floating slab executing method is to insert an extensile levelling jig 10 between a slab sleeve 2 buried in a slab concrete 1 and a vibration- proof rubber core body 5 for raising a slab, and then to fittedly insert a wedge member 6 between them for holding the slab. In a floating slab supporting structure, the vibration-proof rubber core body 5 is formed about into a truncated cone-shape by inserting a vibration-proof rubber 5c between a double ring, and the vibration-proof rubber core body 5 is arranged in the through hole Ia of the slab concrete, and a wedge member 6 is inserted between the inner wall of the through hole 1a and the vibration-proof rubber core body 5 to support the slab.

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