US5362542A
Expired / Lapsed
US
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Fiber reinforced plastic reinforcement for concrete
Assignee: Komatsu Plastics Industry Co Ltd
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Filing: 1993-03-09
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Granted: 1994-11-08
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Expires: 2013-03-09
Abstract
Abstract A fiber reinforced plastic reinforcement for concrete structure comprises a core made of a fiber reinforced plastic material composed of a matrix resin and reinforcing fiber, uneven profile portion integrally formed on the peripheral surface portion of the core having alternately arranged first higher portions and second lower portions, and the reinforcing fiber extending in series across the core and the uneven profile portion.
Inventors
- 👤 Nobuyuki Ozawa
- 👤 Junji Hosokawa
- 👤 Masao Kikuchi
- 👤 Tokitaro Hoshijima
- 👤 Kensuke Yagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:07
CPC Classifications
E; E04; E04C; E04C5/00; E04C5/07; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10T; Y10T428/00; Y10T428/23; Y10T428/232; Y10T428/24; Y10T428/24479; Y10T428/24521; Y10T428/24537; Y10T428/2457; Y10T428/24595; Y10T428/24603
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
98 words
A fiber reinforced plastic reinforcement, for a concrete structure comprising: a core made of a fiber reinforced plastic material composed of a matrix resin and reinforcing fiber; an uneven profile portion integrally formed on a peripheral surface portion of said core so as to provide alternately arranged first higher portions and second lower portions, wherein said reinforcing fiber extends in series across said core and said uneven profile portion and wherein said first higher portions are positioned radially outside beyond said second lower portions in a distance range of 1/1000 to 1/10 times a diameter of said reinforcement.
Claim 2
Dependent Claim
98 words
A fiber reinforced plastic reinforcement, for a concrete structure comprising: a core made of a fiber reinforced plastic material composed of a matrix resin and reinforcing fiber; an uneven profile portion integrally formed on a peripheral surface portion of said core so as to provide alternately arranged first higher portions and second lower portions, wherein said reinforcing fiber extends in series across said core and said uneven profile portion and wherein said first higher portions are positioned radially outside beyond said second lower portions in a distance range of 1/1000 to 1/10 times a diameter of said reinforcement.
Claim 3
Dependent Claim
91 words
A fiber reinforced plastic reinforcement for a concrete structure, comprising: a core made of a fiber reinforced plastic material composed of a matrix resin and reinforcing fiber; an uneven profile portion integrally formed on a peripheral surface portion of said core so as to provide alternately arranged first higher portions and second lower portions, wherein said reinforcing fiber extends in series across said core and said uneven profile portion, wherein the width of said second lower portion is in a range of 1/3 to 1/1 times the diameter of said reinforcement.
Claim 4
Dependent Claim
91 words
A fiber reinforced plastic reinforcement for a concrete structure, comprising: a core made of a fiber reinforced plastic material composed of a matrix resin and reinforcing fiber; an uneven profile portion integrally formed on a peripheral surface portion of said core so as to provide alternately arranged first higher portions and second lower portions, wherein said reinforcing fiber extends in series across said core and said uneven profile portion, wherein the width of said second lower portion is in a range of 1/3 to 1/1 times the diameter of said reinforcement.
Claim 5
Dependent Claim
89 words
A fiber reinforced plastic reinforcement for a concrete structure, comprising: a core made of a fiber reinforced plastic material composed of a matrix resin and reinforcing fiber; uneven profile portion integrally formed on a peripheral surface..portion of said core so as to provide alternately arranged first higher portions and second lower portions, wherein said reinforcing fiber extends in series across said core and said uneven profile portion, wherein a pitch of said second lower portions is in a range of 1 to 6 times the diameter of said reinforcement.
Claim 6
Dependent Claim
89 words
A fiber reinforced plastic reinforcement for a concrete structure, comprising: a core made of a fiber reinforced plastic material composed of a matrix resin and reinforcing fiber; uneven profile portion integrally formed on a peripheral surface..portion of said core so as to provide alternately arranged first higher portions and second lower portions, wherein said reinforcing fiber extends in series across said core and said uneven profile portion, wherein a pitch of said second lower portions is in a range of 1 to 6 times the diameter of said reinforcement.
Claim 7
Dependent Claim
95 words
A fiber reinforced plastic reinforcement for a concrete structure, comprising: a core made of a fiber reinforced plastic material composed of a matrix resin and reinforcing fiber; an uneven profile portion integrally formed on a peripheral surface portion of said core so as to provide alternately arranged first higher portions and second lower portions, wherein said reinforcing fiber extends in series across said core and said uneven profile portion, and said second lower portions are formed by grooves formed integrally with said core, through which grooves and said core, said reinforcing fiber extends in series.
Claim 8
Dependent Claim
95 words
A fiber reinforced plastic reinforcement for a concrete structure, comprising: a core made of a fiber reinforced plastic material composed of a matrix resin and reinforcing fiber; an uneven profile portion integrally formed on a peripheral surface portion of said core so as to provide alternately arranged first higher portions and second lower portions, wherein said reinforcing fiber extends in series across said core and said uneven profile portion, and said second lower portions are formed by grooves formed integrally with said core, through which grooves and said core, said reinforcing fiber extends in series.
Claim 9
Dependent Claim
37 words
A fiber reinforced plastic reinforcement as set forth in claim 4, wherein said first higher portions are formed by projections formed integrally with said core, through which projections and said core, said reinforcing fiber extends in series.
Claim 10
Dependent Claim
35 words
A fiber reinforced plastic reinforcement as set forth in claim 5, wherein said first higher portions are formed with a sequence of projections extending around the peripheral portion of said core in a spiral fashion.
Claim 11
Dependent Claim
35 words
A fiber reinforcement plastic reinforcement as set forth in claim 5, wherein said first higher portions are formed with two elongated projections extending around the peripheral portion of said core in a mutually intersecting fashion.
Claim 12
Dependent Claim
35 words
A fiber reinforced plastic reinforcement as set forth in claim 4, wherein said second lower portions are formed with a sequence of grooves extending around the peripheral portion of said core in a spiral fashion.
Claim 13
Dependent Claim
35 words
A fiber reinforcement plastic reinforcement as set forth in claim 4, wherein said second lower portions are formed with two elongated grooves extending around the peripheral portion of said core in a mutually intersecting fashion.
Claim 14
Dependent Claim
33 words
A fiber reinforced plastic reinforcement as set forth in claim 9, wherein said two grooves are formed on the peripheral portion of said core in a spiral fashion with mutually opposite spiral directions.
Claim 15
Dependent Claim
29 words
A fiber reinforced plastic reinforcement as set forth in claim 4, wherein said groove is formed by an impression in a fabrication process before completely curing said matrix resin.
Claim 16
Dependent Claim
39 words
A fiber reinforced plastic reinforcement as set forth in claim 4, wherein said first higher portions are positioned radially outside beyond said second lower portions in a distance range of 1/1000 to 1/10 times a diameter of said reinforcement.
Claim 17
Dependent Claim
33 words
A fiber reinforced plastic reinforcement as set forth in claim 4, wherein the width of said second lower portion is in a range of 1/3 to 1/1 times the diameter of said reinforcement.
Claim 18
Dependent Claim
33 words
A fiber reinforced plastic reinforcement as set forth in claim 4, wherein a pitch of said second lower portions is in a range of 1 to 6 times the diameter of said reinforcement.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-11-07 | 1998-05-09 | 1998-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-07 | 2002-05-09 | 2002-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-07 | 2006-05-09 | 2006-11-08 | $7700.00 | Window Closed / Lapsed |