Patents Assigned to Namba Press Works Co., Ltd.
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Patent number: 6045731Abstract: According to the invention, a novel guide member for integrally forming the fastening parts with the urethane mold and an integral molding method using the guide member are provided. The guide member includes a guide body that has an extended body which includes concave cross-section and at least one open end (4, 7), and isolation members (5, 6) provided near the ends of said guide portion. The isolation members are detachable, and by engaging with the fastening surface of the fastening parts, they effectively block any seepage of liquid foaming raw material. With the integral forming method using said guide member of the invention, it is possible to embed the ends of the fastening parts within the urethane molding and to improve its peeling strength at low cost.Type: GrantFiled: January 30, 1997Date of Patent: April 4, 2000Assignee: Namba Press Works Co., Ltd.Inventor: Chikara Matsuoka
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Patent number: 6004491Abstract: A method of an integrated molding by integrally pressurizing and compressing by use of means of an upper mold and a lower mold, by use of a silicone rubber. A silicone rubber has excellent resiliency, thermal resistance, separating ability from the molds and the like. By use of a silicone rubber, a working efficiency for carrying out the integrated molding can be improved and a compressing timing can be easily taken. A method according to the invention comprises steps of: uniformly coating a mixture of a foamed urethane body on a silicone rubber horizontally held; and integrally pressurizing and compressing for a certain period by an upper mold and a lower mold. The step of uniformly coating the mixture is carried out by using a spraying technique. The silicone rubber can be attached on an inner surface of the lower mold by use of means of vacuum suction.Type: GrantFiled: August 1, 1997Date of Patent: December 21, 1999Assignee: Namba Press Works Co., Ltd.Inventor: Taro Ogawa
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Patent number: 5093175Abstract: An integrally foamed article comprises a threefold-laminated cover material and a body foam bonded together thereto. The threefold-laminated cover material is preliminarily configured into a substantially closed hollow shape corresponding to a desired final contour into which a foamable mixture such as reactive polyurethane stock is poured and allowed to foam and expand to adhere integrally therewith without any penetration into said cover material. The threefold-laminated cover material is composed of an outermost permeable cover fabric such as knitted or woven fabric, an intermediate thin foam layer bonded to the inside of said fabric, and an innermost shielding film such as polyvinyl chloride or polyurethane film formed therein with a number of minute air holes permitting gases and air to be passed therethrough, but not permitting said foamable mixture to enter.Type: GrantFiled: December 28, 1989Date of Patent: March 3, 1992Assignee: Namba Press Works Co., Ltd.Inventors: Fumio Goto, Taro Ogawa
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Patent number: 4925508Abstract: Moldless process for manufacturing foamed articles is disclosed wherein a trim cover is first prepared as having a composite structure of an outer facing material such as fabric and an inner backing material of low melting point such as a thin foam of polystyrene and having a shape substantially corresponding to a final contour of the finished article; the trim cover is heated and forced to form a pre-shaped cover conforming to the final contour of the finished article preferably by means of a restraining frame such as basket or plastic cage configured to the final contour of the finished article; highly reactive polyurethane composition foamable at low internal pressure is poured inside the pre-shaped cover and allowed to foam and expand to fill substantially an entire volume within the pre-shaped cover; and then the pre-shaped cover is externally heated to around the melting temperature of the backing material so as to significantly shrink and virtually dissipate the backing material interposed between theType: GrantFiled: August 16, 1988Date of Patent: May 15, 1990Assignee: Namba Press Works Co., Ltd.Inventors: Fumio Goto, Taro Ogawa
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Patent number: 4883632Abstract: A method for shaping thermoplastic fabrics such as those made of polyester or polyamide fibers into desired three dimensional configurations through a simple procedure. Thermoplastic fabrics are immersed into hot liquid metallic bath made of eutectic metals such as lead, tin, cadmium, zinc and bismuth and formulated to have the eutectic point at least equal to or higher than the softening point of the thermoplastic fibers and lower than the melting point of the fibers. This metallic bath may be called "fluidic lower mold." The thermoplastic fabrics are immersed into the fluidic lower mold by means of an upper mold or core member having desired outer configurations substantially corresponding to those of final products, for example, headrest or seat cushion. The upper mold pushes down the fabric preferably along with a protective sheet laid beneath the fabric into the metallic bath.Type: GrantFiled: October 21, 1988Date of Patent: November 28, 1989Assignee: Namba Press Works Co., Ltd.Inventors: Fumio Goto, Taro Otawa
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Patent number: 4804506Abstract: A method for manufacturing a multihardness foamed article, including the steps of, placing a mold for foaming such that its bottom surface is inclined with respect to the horizontal plane, pouring a first liquid formulation which will form a portion having a certain hardness designed to constitute the surface area of the foamed article at or adjacent to a higher point of the inclined bottom surface, and allowing the formulation to flow and spread over the entire bottom surface as a continuous thin layer while sticking at its undersurface to the bottom surface, immediately after pouring of the first formulation, pouring a second liquid formulation which will form another portion of another hardness designed to constitute a portion other than the surface area of the foamed article at or adjacent to the higher point, and allowing the second formulation to flow and spread over the flowing and spreading first formulation as a second continuous thin layer which will not commingle with the first layer, and allowingType: GrantFiled: June 29, 1987Date of Patent: February 14, 1989Assignee: Namba Press Works Co., Ltd.,Inventors: Tsuneyuki Okamoto, Yasuyuki Toda, Mitsuo Katayama, Yasumasa Senoh
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Patent number: 4591470Abstract: A process for molding a structural body of ceramic or other granular materials which has hollow portions inwardly enlarged or complicatedly configured, which process comprises preparing a removable insert member which is fusible at temperatures not affecting an unbaked structural body and has the contours corresponding to an intended hollow portion, molding a structural body with ceramic or other granular material integrally with the removable insert member as by injection or transfer molding, heating as by electricity or hot fluids the insert member to cause the latter to be fused and formed with a through hole extending from end to end of the member, and blowing hot air into the through hole during a preliminary baking of the unbaked structural body so as to completely remove the insert member thereby to obtain a molded structural body of granular material provided with complicated hollow portions therein.Type: GrantFiled: October 4, 1983Date of Patent: May 27, 1986Assignee: Namba Press Works Co., Ltd.Inventors: Fumio Goto, Taro Ogawa
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Patent number: 4590026Abstract: A process for forming reinforcing layers or films on the complicated configured interior surfaces of a unitary molded plastic body consisting of providing soluble or meltable inert core member, applying ceramic or metallic reinforcing layers or films onto outer surfaces of the core member except its longitudinal ends, placing the core member covered with the reinforcings in the mold cavity, molding a plastic body around and integrally with the reinforcing layers or films on the core member, and fluidizing the core member to remove the same from the interior of said plastic body leaving the reinforcing layers or films on the interior surfaces of the plastic body.Type: GrantFiled: June 18, 1984Date of Patent: May 20, 1986Assignee: Namba Press Works Co. Ltd.Inventor: Fumio Goto
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Patent number: 4531779Abstract: An automotive or similar type vehicle seat comprising a seat back having an adjustable central portion which may be selectively adjustably positioned to minimize driver fatigue. The adjustable area is actuable upon rotation of an adjustment knob which controls rotation of a shaft which is connected via suitable linkages to a pivotal support mechanism for pivotably adjusting the central portion of the seat back.Type: GrantFiled: January 24, 1983Date of Patent: July 30, 1985Assignee: Namba Press Works Co., Ltd.Inventor: Yuji Hashimoto
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Patent number: 4469374Abstract: An automotive or similar type vehicle seat comprising a seat back having an adjustable central portion which may be selectively adjustably positioned to minimize driver fatigue. The adjustable area is actuatable upon rotation of an adjustment knob which controls rotation of a shaft which is connected via suitable linkages to a pivotal support mechanism for pivotably adjusting the central portion of the seat back.Type: GrantFiled: November 20, 1981Date of Patent: September 4, 1984Assignee: Namba Press Works Co., Ltd.Inventors: Jo. Kashihara, Etsusuke Oda