Patents by Inventor Mitsuhiro Tokuno
Mitsuhiro Tokuno has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10767333Abstract: The present invention enables easy construction of a foundation pile having a rigid structure even at a site where a pile produced in a factory cannot be brought in. The tube 1 having a forming material filling port 1a at a top end and a closed bottom 1b at a bottom end is set in a suspended state, and foundation pile forming material 4 is filled from the forming material filling port 1a into the tube 1 in the suspended state. A composite foundation pile 5 in which the tube 1 and the filled forming material 4 are integrated is formed, and the composite foundation pile 5 is driven into the ground 13 or inserted into a borehole 12 formed on the ground 13.Type: GrantFiled: November 8, 2012Date of Patent: September 8, 2020Assignees: ASAHI ENGINEERING CO., LTD., AE JAPAN CO., LTD.Inventor: Mitsuhiro Tokuno
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Patent number: 10036130Abstract: A slab bridge structure having improved rigid connection strength between bridge girders and concrete piers. The slab bridge structure has a rigid connection structure in which slab concrete (3) is poured between side surfaces of bridge girders (1) arranged in line in a bridge width direction, throughout a longitudinal direction of the bridge girders, connection concrete (12) in which bridge girder portions (1?) supported by a bridge seat (2a) of a concrete pier (2) that supports the bridge girders are embedded is further added onto the bridge seat, and the slab concrete and the concrete pier are concrete-joined through the connection concrete, the slab bridge structure further includes: a connecting rod (13) embedded in the concrete pier and projecting upward from the bridge seat of the pier; and a connecting plate (14) connecting upper end portions of the adjacent bridge girder portions.Type: GrantFiled: October 17, 2014Date of Patent: July 31, 2018Assignees: ASAHI ENGINEERING CO., LTD., AE JAPAN CO., LTD.Inventor: Mitsuhiro Tokuno
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Publication number: 20170233961Abstract: A slab bridge structure having improved rigid connection strength between bridge girders and concrete piers. The slab bridge structure has a rigid connection structure in which slab concrete (3) is poured between side surfaces of bridge girders (1) arranged in line in a bridge width direction, throughout a longitudinal direction of the bridge girders, connection concrete (12) in which bridge girder portions (1?) supported by a bridge seat (2a) of a concrete pier (2) that supports the bridge girders are embedded is further added onto the bridge seat, and the slab concrete and the concrete pier are concrete-joined through the connection concrete, the slab bridge structure further includes: a connecting rod (13) embedded in the concrete pier and projecting upward from the bridge seat of the pier; and a connecting plate (14) connecting upper end portions of the adjacent bridge girder portions.Type: ApplicationFiled: October 17, 2014Publication date: August 17, 2017Inventor: Mitsuhiro TOKUNO
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Publication number: 20150275455Abstract: The present invention enables easy construction of a foundation pile having a rigid structure even at a site where a pile produced in a factory cannot be brought in. The tube 1 having a forming material filling port 1a at a top end and a closed bottom 1b at a bottom end is set in a suspended state, and foundation pile forming material 4 is filled from the forming material filling port 1a into the tube 1 in the suspended state. A composite foundation pile 5 in which the tube 1 and the filled forming material 4 are integrated is formed, and the composite foundation pile 5 is driven into the ground 13 or inserted into a borehole 12 formed on the ground 13.Type: ApplicationFiled: November 8, 2012Publication date: October 1, 2015Inventor: Mitsuhiro Tokuno
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Patent number: 8370983Abstract: In a rigid connection structure of a bridge pier and concrete girder, a joint-equipped PC concrete girder is constituted by burying a rear half part of a shaped-steel joint formed of short shaped-steel respectively in both ends of the concrete girder and protruding a front half part of each shaped-steel joint respectively from each end face of the concrete girder, the respective shaped-steel joint portions protruded from the respective end faces of the concrete girders are supported on a bridge abutment face of a bridge pier while being connected to a connection strip member which arises from the bridge abutment face, and the respective shaped-steel joint portions and the connection strip member are buried in connection concrete which is additionally casted on the bridge abutment face.Type: GrantFiled: October 21, 2009Date of Patent: February 12, 2013Assignees: Asahi Engineering Co., Ltd., Eco Japan Co., Ltd.Inventors: Mitsuhiro Tokuno, Fumihiro Saito
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Publication number: 20110191967Abstract: The present invention provides a rigid connection structure of a bridge pier and a concrete girder capable of drastically reducing bridging cost and reducing total quantity of steel material to be used compared to a rigid-frame bridge using steel girders and capable of flexibly forming concrete girders into a shape corresponding to a bridging site without shape restriction for steel girders.Type: ApplicationFiled: October 21, 2009Publication date: August 11, 2011Inventors: Mitsuhiro Tokuno, Fumihiro Saito
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Patent number: 7469439Abstract: A floor slab bridge structure is capable of enhancing the strength with which bridge girders and concrete bridge piers are rigidly joined so as to effectively suppress expansion and contraction, deflection, and distortion of the bridge girders, and to synergistically enhance the strength of connection concrete itself against the expansion and contraction, distortion, etc., to thereby be effective to prevent collapse of a bridge due to a large earthquake. Slab concrete is hammer-set between sides of respective bridge girders, which are spaced apart in a bridge width direction, along a length direction of the bridge girders. Connection concrete, in which bridge girder portions supported on bridge bottom surfaces of concrete bridge piers supporting the bridge girders are embedded, is additionally deposited on the bridge bottom surfaces to form a floor slab bridge structure constituting a rigid joining structure.Type: GrantFiled: October 25, 2006Date of Patent: December 30, 2008Assignees: Asahi Engineering Co., Ltd., Eco Japan Co., Ltd.Inventors: Mitsuhiro Tokuno, Fumihiro Saito
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Patent number: 7418804Abstract: A floor structure comprises a plurality of steel beams 4 arranged in parallel, each steel beam 4 including a web, an upper flange disposed at an upper end of the web, and a lower flange disposed at a lower end of the web, a floor surface being formed on the upper flange 2. The floor structure further includes displacement preventing spacers interposed between the upper flanges and/or lower flanges of the adjacent steel beams. Each displacement preventing spacer includes a load receiving part which is brought into engagement with the adjacent upper flanges and/or lower flanges to receive an active load incurred by the individual steel beams 4 so as to inhibit the steel beams 4 from displacing downward.Type: GrantFiled: April 16, 2007Date of Patent: September 2, 2008Assignees: Asahi Engineering Co., Ltd., ECO Japan Co., Ltd.Inventors: Mitsuhiro Tokuno, Kazutoshi Tsuda, Fumihiro Saito
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Patent number: 7373760Abstract: A floor structure comprises a plurality of steel beams 4 arranged in parallel, each steel beam 4 including a web, an upper flange disposed at an upper end of the web, and a lower flange disposed at a lower end of the web, a floor surface being formed on the upper flange 2. The floor structure further includes a displacement preventing spacer interposed between the upper flanges and/or lower flanges of the adjacent steel beams. The displacement preventing spacer includes a load receiving part which is brought into engagement with the adjacent upper flanges and/or lower flanges to receive an active load incurred by the individual steel beams 4 so as to inhibit the steel beams 4 from displacing downward.Type: GrantFiled: May 27, 2004Date of Patent: May 20, 2008Assignees: Asahi Engineering Co., Ltd., Eco Japan Co., Ltd.Inventors: Mitsuhiro Tokuno, Kazutoshi Tsuda, Fumihiro Saito
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Publication number: 20070251031Abstract: The invention provides a floor slab bridge structure capable of enhancing that strength, with which bridge girders and concrete bridge piers are rigidly joined, effectively suppressing expansion and contraction, deflection, and distortion of the bridge girders, and synergistically enhancing the strength of connection concrete itself against the expansion and contraction, distortion, etc., and being very effective as measures for prevention of collapse of bridge against a large earthquake.Type: ApplicationFiled: October 25, 2006Publication date: November 1, 2007Inventors: Mitsuhiro Tokuno, Fumihiro Saito
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Publication number: 20070193161Abstract: The present invention makes it possible to dismantle and re-use a floor structure by effectively exhibiting the displacement preventing effect for each steel beam against an active load when the floor structure is formed by arranging steel beams in parallel. A floor structure comprises a plurality of steel beams 4 arranged in parallel, each steel beam 4 including a web, an upper flange disposed at an upper end of the web, and a lower flange disposed at a lower end of the web, a floor surface being formed on the upper flange 2. The floor structure further includes a displacement preventing spacer interposed between the upper flanges and/or lower flanges of the adjacent steel beams. The displacement preventing spacer includes a load receiving part which is brought into engagement with the adjacent upper flanges and/or lower flanges to receive an active load incurred by the individual steel beams 4 so as to inhibit the steel beams 4 from displacing downward.Type: ApplicationFiled: April 16, 2007Publication date: August 23, 2007Inventors: Mitsuhiro Tokuno, Kazutoshi Tsuda, Fumihiro Saito
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Patent number: 6892410Abstract: Through co-action between auxiliary triangular structural frames, which are each constructed at opposite ends of a truss girder or arch girder, and a cable stretched between the auxiliary triangular structural frames, an upwardly directed force is exerted to the truss girder or arch girder, thereby effectively inducing a load resisting force. A reinforcement structure of a truss bridge or arch bridge is comprised of a truss girder or arch girder, a first and a second end of which are each provided with a main triangular structural frame. The main triangular structural frame is provided at an inner side thereof with an auxiliary triangular structural frame. The auxiliary triangular structural frame is joined at vertexes thereof with frame structural elements at respective sides of the main triangular structural frame.Type: GrantFiled: September 3, 2003Date of Patent: May 17, 2005Assignee: Asahi Engineering Co., Ltd.Inventors: Mitsuhiro Tokuno, Fumihiro Saito, Seio Takeshima, Yoshiaki Nakai
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Publication number: 20040221533Abstract: The present invention makes it possible to dismantle and re-use a floor structure by effectively exhibiting the displacement preventing effect for each steel stock against an active load in case the floor structure is formed by arranged steel stocks in parallel. A floor structure comprises a plurality of steel stocks 4 arranged in parallel, each steel stock 4 including a web 1, an upper flange 2 disposed at an upper end of the web 1, and a lower flange 3 disposed at a lower end of the web 1, a floor surface being formed on the upper flange 2, the floor structure further comprising a displacement preventing spacer 6 interposed between the upper flanges 2 and/or lower flanges 3 of the adjacent steel stocks 4, the displacement preventing spacer 6 including a load receiving part 7 which is brought into engagement with the adjacent upper flanges 2 and/or lower flanges 3 to receive an active load incurred to the individual steel stocks 4 so as to inhibit the steel stocks 4 from displacing downward.Type: ApplicationFiled: May 27, 2004Publication date: November 11, 2004Inventors: Mitsuhiro Tokuno, Kazutoshi Tsuda, Fumihiro Saito
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Patent number: 6792638Abstract: A construction of a floor slab bridge includes a plurality of columnar H-shaped steels each disposed between adjacent bridge legs and arranged in side-by-side relation with an end face of a lower flange abutted with a corresponding end face of the adjacent columnar H-shaped steel. A lower concrete layer is formed by placing concrete in a space defined between the upper and lower flanges and between adjacent web plates through a concrete inlet port formed between the adjacent upper flange, and an upper concrete layer is formed by placing concrete on the upper flange. An iron reinforcement is horizontally disposed on the upper flanges, and an iron reinforcement is suspended in the space from the horizontal iron reinforcement through the concrete inlet port.Type: GrantFiled: March 25, 2003Date of Patent: September 21, 2004Assignees: Asahi Engineering Co., Ltd., Eco Japan Co., Ltd.Inventors: Mitsuhiro Tokuno, Kazutoshi Tsuda, Fumihiro Saito
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Publication number: 20040074022Abstract: To properly construct a floor slab bridge by forming a main girder structure of the floor slab bridge in a bridge using commercially available columnar H-shaped steels and then applying concrete thereto.Type: ApplicationFiled: March 25, 2003Publication date: April 22, 2004Inventors: Mitsuhiro Tokuno, Kazutoshi Tsuda, Fumihiro Saito
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Publication number: 20040040100Abstract: Through co-action between auxiliary triangular structural frames which are each constructed at opposite ends of a truss girder or arch girder and a cable stretched between the auxiliary triangular structural frames, an upward directing force is exerted to the truss girder or arch girder, thereby effectively inducing a load resisting force.Type: ApplicationFiled: September 3, 2003Publication date: March 4, 2004Inventors: Mitsuhiro Tokuno, Fumihiro Saito, Seio Takeshima, Yoshiaki Nakai
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Patent number: RE40064Abstract: A construction of a floor slab bridge includes a plurality of columnar H-shaped steels each disposed between adjacent bridge legs and arranged in side-by-side relation with an end face of a lower flange abutted with a corresponding end face of the adjacent columnar H-shaped steel. A lower concrete layer is formed by placing concrete in a space defined between the upper and lower flanges and between adjacent web plates through a concrete inlet port formed between the adjacent upper flange, and an upper concrete layer is formed by placing concrete on the upper flange. An iron reinforcement is horizontally disposed on the upper flanges, and an iron reinforcement is suspended in the space from the horizontal iron reinforcement through the concrete inlet port.Type: GrantFiled: September 18, 2006Date of Patent: February 19, 2008Assignees: Asahi Engineering Co., Ltd., Eco Japan Co., Ltd.Inventors: Mitsuhiro Tokuno, Kazutoshi Tsuda, Fumihiro Saito