公开(公告)号：JPH10102621A

公开(公告)日：1998-04-21

申请号：JP27418896

申请日：1996-09-25

Applicant: BRIDGESTONE CORP

Inventor： MURAKAMI KAZUTOMO ,  TSUKADA SUSUMU ,  INABA KENJI ,  TAKESHITA MICHITAKA

IPC: E04B1/86 ,  G10K11/16

Abstract: PROBLEM TO BE SOLVED: To change and adjust the target frequency to reduce sound in response to the frequency of indoor standing wave by making changeable at least one of the volume of cavity portion of resonance sound absorbing mechanism, length of air passage of neck portion and the cross sectional area of an opening at the neck portion. SOLUTION: A resonator 1 as a resonance sound absorbing mechanism is constituted with a hollow cylindrical body 2, a neck portion 3 having an opening portion 5 directed outwardly and communicating with an opening hole atone of side ends, and a changing mechanism 4. Resonance of a resonator 1 is a resonance phenomenon by the mass of air existing at the neck portion 3 and air spring component at the cavity portion of a cylindrical body 2. And the standing wave can be effectively reduced by tuning the standing wave generating the resonance sound absorbing frequency of the resonator 1. At the changing mechanism 4, the partition board 41 is moved, the volume at the side of neck portion 3 is made variable, and thge length and inner diameter of the neck portion 3 are made variable thereby tuning to the resonance sound absorbing frequency of the standing wave. In this way, the sound absorbing frequency band can be changed and adjusted in alignment to the individual indoor situation and furniture layout.

公开(公告)号：JPH10102616A

公开(公告)日：1998-04-21

申请号：JP27419496

申请日：1996-09-25

Applicant: BRIDGESTONE CORP

Inventor： MURAKAMI KAZUTOMO ,  TSUKADA SUSUMU ,  INABA KENJI ,  TAKESHITA MICHITAKA

IPC: E04B1/82

Abstract: PROBLEM TO BE SOLVED: To efficiently reduce noise in a low frequency band by building a resonance sound absorbing mechanism in a hollow or solid column. SOLUTION: A soundproof column 1 is formed by building resonance and absorption mechanism 2 in an upper portion and a lower portion of a column projected out to the inside of the room, each mechanism being composed of a main body 21 having a cavity portion, a neck portion 22 passing through the cavity portion of the main body portion 21, and an opening 23 opened toward inner room side at the neck portion 22. The mechanism 2 reduces and absorbs standing wave occurred in the room by utilizing resonant phenomenon caused by the mass of air existing in a passage of the neck portion 22 and an air spring component of a cavity portion of the main body portion 21. Also as required, the cross-sectional area of an opening 23, the volume of cavity portion of the main body portion, and the length of the passage of the neck portion 22 are made freely adjustable and are accurately tuned to the standing wave changing in response to the actual situation in side the room. By doing this, the noise level of the low frequency band the most problematic by the sound of impact of heavy objects to the floor can be reduced effectively and the resonance and absorbing mechanism can be arranged without projecting out to the space in room.

公开(公告)号：JPH1018452A

公开(公告)日：1998-01-20

申请号：JP19133396

申请日：1996-07-01

Applicant: BRIDGESTONE CORP

Inventor： NAKAZAWA KAZUMA ,  YAMADA KOTARO ,  SHINPO MUNETOSHI ,  TAKESHITA MICHITAKA

IPC: E04B1/684 ,  E04B2/72

Abstract: PROBLEM TO BE SOLVED: To improve the waterproofness of the joint section of a panel by combining a joiner having waterproofness and a sealing material. SOLUTION: In this connecting method, groovs 1B are formed on at least the surface sides of panels 1 made of a resin along edges 1A while being adjoined to the edges 1A of the panels 1, and the mutual abutting places of the panels 1 are connected. The bent sections 2A of a channel-shaped joiner 2 having the bent sections 2A entered into each groove 1B of the mutual abutted panels 1 at both ends and having waterproofness are intruded into the grooves 1B and a beltlike plate section 2B between the bent sections 2A is covered with a joint at that time. Sealing materials 3 consisting of a resin of the same kind as a resin forming the panels 1 or a resin having high adhesion with the resin are set into the grooves 1B, into which the bent sections 2A of the joiner 2 are entered, and the sealing materials 3 are heated and melted with the resin of the panels 1 while the bent sections 2A are buried into the sealing materials 3.

公开(公告)号：JPH09310423A

公开(公告)日：1997-12-02

申请号：JP15039396

申请日：1996-05-21

Applicant: BRIDGESTONE CORP

Inventor： YAMADA KOTARO ,  NAKAZAWA KAZUMA ,  TAKESHITA MICHITAKA ,  SHINPO MUNETOSHI

IPC: E04C2/20 ,  E04B1/80

Abstract: PROBLEM TO BE SOLVED: To prevent a panel from being deformed when resin material is foamingly molded in a hollow panel main body molded by blowing out of resin material by providing a continuous groove of specified dimension on the edge part of the main body. SOLUTION: Continuous grooves 2 recessed inside are provided along the vicinity of the edges 1A on the both faces of a hollow box-shaped panel main body which is molded by blowing out of resin material. The groove 2 is formed at the position of 5-20mm from the edge and into the depth and width of 5-20mm respectively. The hollow interior of the main body is filled with heat insulating material consisting of foam resin material, and it is foamed by heating with steam or the like. In this case, the edge 1A is heated and cooled again so as to intend to secondary contract, but resin of the edge part 1A is obstructed from flowing toward the panel center by the groove 2, and hence the form of the edge 1A is finished into fixed dimensional accuracy. Hereby, the corner of the panel main body edge part can be prevented from being deformed into a rounded shape.

公开(公告)号：JPH09112971A

公开(公告)日：1997-05-02

申请号：JP29373795

申请日：1995-10-16

Applicant: BRIDGESTONE CORP

Inventor： NAKAZAWA KAZUMA ,  TAKESHITA MICHITAKA ,  YAMADA KOTARO

IPC: B65D90/06 ,  B65D90/22 ,  F24F5/00

Abstract: PROBLEM TO BE SOLVED: To perform a secure fixing of a thermal insulating material with a fixing metal fitting even if the thermal insulating material comes to float or the material is collapsed by water pressure and further to prevent a water- proof sheet from being damaged by a heat part of the fixing metal fitting. SOLUTION: In a thermal insulation water-proof structure in which a thermal insulating material 2 is fixed to a casing 1 of a thermal insulation tank or the like by a fixing metal fitting 3 and its surface is covered with a water-proof sheet 4, a central part 5A through which the fixing metal fitting 3 for a pressor plate 5 for use in pressing the surface of the thermal insulating material 2 by the fixing metal fitting 3 is formed by metallic material and at the same time its circumferential part 5B is formed by synthetic resin material. An engaging plate 6 is engaged with the circumferential part 5B of the pressing plate 5 in such a way that it may cover a heat part 3A of the fixing fitting 3 driven into the pressing plate 5 and then the water-proof sheet 4 is applied to cover an entire surface of the thermal insulating material 2 from above the engaging plate 6.

公开(公告)号：JPH0952318A

公开(公告)日：1997-02-25

申请号：JP22582195

申请日：1995-08-10

Applicant: BRIDGESTONE CORP

Inventor： TAKESHITA MICHITAKA ,  YOSHIDA TAKEICHI ,  INABA KENJI ,  ABE MASANORI

IPC: B27D1/04 ,  B32B21/10 ,  E04C2/24

Abstract: PROBLEM TO BE SOLVED: To provide the superior bending strength and dimension stability and the properties of contribution to the protection of resources. SOLUTION: In the structure of a woody core material board 1 formed by sticking a reinforcing material 2 on the surface of the woody core material board 1, the reinforcing material 2 is formed by sticking a prepreg paper 4 composed of a paper impregnated with uncured synthetic resin on a woven cloth 3, and the woven cloth 3 is clamped between the woody core material board 1 and the prepreg paper 4, heated and pressurized, and the woody core material board 1 and the reinforcing material 2 are stuck together.

公开(公告)号：JPS649248A

公开(公告)日：1989-01-12

申请号：JP16250287

申请日：1987-07-01

Applicant: BRIDGESTONE CORP

Inventor： TAKESHITA MICHITAKA ,  SUGAWARA TOSHIO

IPC: C09C1/56 ,  C08K3/00 ,  C08K3/04 ,  C08K3/36 ,  C08K5/00 ,  C08K5/34 ,  C08K5/54 ,  C08L7/00 ,  C08L9/00

Abstract: PURPOSE:To obtain the title composition excelling in heat build-up resistance and reinforcing property and heat aging resistance at high temperature, by mixing a rubber component with a specified reinforcing carbon black, silica, a triazine compound and a silane coupling agent. CONSTITUTION:Carbon black is surface-treated by vacuum low-temperature plasma treatment to obtain reinforcing carbon black (B) of a nitrogen adsorption specific surface area of 70-200m /g, a compressed dibutyl phthalate absorption of 80-130ml/100g, a concentration of phenolic hydroxyl groups introduced to the surface of 3.0X10 -8.1X10 piece/m and a pH value of 3-5. 100pts.wt. rubber component (A) selected from among natural and diene synthetic rubbers is mixed with 30-200pts.wt. component B, 2-30pts.wt. silica (C), 0.1-2pts.wt. triazine compound (D) of formula I [wherein Ra is -NR'2 (wherein R' is a 2-4C alkyl), -NHR'' (wherein R'' is R' or phenyl), Rb is -SH, formula II or -N(C2H5)2, Rc is -H or formula III or IV] and 4.65X10 -4.65X10 m, S pts.wt. (wherein m is the number of pts.wt. of component B added and S is the nitrogen adsorption specific surface area of component B), silane coupling agent (E) of formula V, VI or VII (wherein X is cyano, mercapto or the like, Y is a 1-4C alkyl, Cl or the like,m is 1-6, and X is formula III, IX or X).

公开(公告)号：JPS60248753A

公开(公告)日：1985-12-09

申请号：JP10266684

申请日：1984-05-23

Applicant: BRIDGESTONE CORP

Inventor： TAKESHITA MICHITAKA

IPC: C08L7/00 ,  B60C1/00 ,  B60C11/00 ,  C08K3/00 ,  C08K3/04 ,  C08K5/34 ,  C08K5/3437 ,  C08K13/02 ,  C08L1/00 ,  C08L9/00 ,  C08L21/00 ,  C08L23/00 ,  C08L27/00 ,  C08L101/00

Abstract: PURPOSE:To provide the titled composition having lowered heat-generation as well as improved abrasion resistance, by compounding a specific rubber component with specific amounts of a compound obtained by modifying a nitrosoquinoline compound with an isocyanate or acylating the nitrosoquinoline compound, and a specific reinforcing carbon black. CONSTITUTION:(A) 100pts.wt. of a rubber component composed of a natural rubber and/or a synthetic isoprene rubber, or a rubber component obtained by compounding the above rubber component with one or more synthetic diene rubbers other than the above rubbers (e.g. SBR, BR, etc.) (provided that the ratio of the natural rubber and/or the synthetic isoprene rubber is >=40pts.) is compounded with (B) 0.5-5pts. (in terms of 5-nitroso-8-hydroxyquinoline equivalent) of the compound of formula (R1-5 are H, halogen, etc.; Y is alkyl, etc.) obtained by modifying a nitrosoquinoline compound with isocyanate or acylating the nitrosoquinoline compound, and (C) 30-90pts. of reinforcing carbon black having specific surface area of 65-170m /g (measured by nitrogen adsorption) and a DBP value of 80-125ml/100g.

公开(公告)号：JP2001300851A

公开(公告)日：2001-10-30

申请号：JP2000255605

申请日：2000-08-25

Applicant: BRIDGESTONE CORP

Inventor： AOKI SEI ,  YAMAKAWA MASABUMI ,  NEGISHI KOICHI ,  TAKESHITA MICHITAKA

IPC: B24C11/00

Abstract: PROBLEM TO BE SOLVED: To provide a projecting material and a blasting method, capable of preventing electrostatic charge of the projecting material and efficiently performing blasting. SOLUTION: This projecting material is made of a first grain made of a thermosetting resin such as a melamine resin as a main component and includes a second grain made of a material such as glass, silica, a thermoplastic resin or the like different from the thermosetting resin. This blasting method is performed by using the projecting material.

公开(公告)号：JP2000240181A

公开(公告)日：2000-09-05

申请号：JP4059099

申请日：1999-02-18

Applicant: BRIDGESTONE CORP

Inventor： YAMADA KOTARO ,  NAKAZAWA KAZUMA ,  TAKESHITA MICHITAKA

IPC: E04B1/76 ,  E04C2/20 ,  E04C2/30

Abstract: PROBLEM TO BE SOLVED: To prevent degrading of heat insulation performance due to moisture absorption from a cut-off surface of an insulating and waterproof panel. SOLUTION: A primer treatment is applied and a primer layer 4 is formed to an exposed insulation material 2 and a periphery 1A adjacent to the cut-off part at the cut-off cross section 3 of an insulating and waterproof panel filled with the insulation material 2 inside a hollow portion of an hollow panel body 1 formed with a synthetic resin material. Then, a sealing agent is coated on the primer layer 4 and a sealing layer 5 is formed.