Patent US4585487A successfully refreshed from Google Patents.
US4585487A
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Filiform elements usable for reinforcing moldable materials, particularly concrete
Assignee: Eurosteel SA
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Filing: 1983-12-21
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Granted: 1986-04-29
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Expires: 2003-12-21
Abstract
Abstract PCT No. PCT/BE83/00023 Sec. 371 Date Aug. 29, 1984 Sec. 102(e) Date Aug. 29, 1984 PCT Filed Dec. 21, 1983 PCT Pub. No. WO84/02732 PCT Pub. Date Jul. 19, 1984.Filiform element usable for reinforcing moldable materials particularly concrete, said filiform element having crimpings or corrugations distributed over its length, showing the following features: maximum wave amplitude of the longitudinal axis: 1 to 1.5 d; maximum wave-length: 10 d; minimum wave-length: 7 d; maximum fiber length: 65 d; minimum fiber length: 45 d; fiber diameter (d): max. 1.2 mm; nature of the steel: ultimate tensile strength higher than 110 kg/mm2 and lower than 150 kg/mm2.
Inventors
- 👤 Xavier P. Destree
- 👤 Angelo A. Lazzari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:38
CPC Classifications
E; E04; E04C; E04C5/00; E04C5/01; E04C5/012; C; C04; C04B; C04B14/00; C04B14/38; C04B14/48; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12431; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T428/2925; Y10T428/2973; Y10T428/2976; Y10T428/2978
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
75 words
Fiber of steel wire usable for reinforcing moldable materials particularly concrete, said fiber having uniform wave shaped corrugations distributed over its length, with the following features: ______________________________________
maximum wave amplitude 1 to 1.5 d
maximum wave-length 10 d
minimum wave-length 7 d
maximum fiber length 65 d
minimum fiber length 45 d
fiber diameter (d) max. 1.2 mm
nature of the steel: ultimate
tensile strength higher than
110 kg/mm.sup.2
and lower than 150 kg/mm.sup.2.
______________________________________
Claim 2
Dependent Claim
75 words
Fiber of steel wire usable for reinforcing moldable materials particularly concrete, said fiber having uniform wave shaped corrugations distributed over its length, with the following features: ______________________________________
maximum wave amplitude 1 to 1.5 d
maximum wave-length 10 d
minimum wave-length 7 d
maximum fiber length 65 d
minimum fiber length 45 d
fiber diameter (d) max. 1.2 mm
nature of the steel: ultimate
tensile strength higher than
110 kg/mm.sup.2
and lower than 150 kg/mm.sup.2.
______________________________________
Claim 3
Dependent Claim
39 words
Fiber according to claim 1, characterized by: ______________________________________
a diameter of 1 mm
a wave amplitude of 1 mm
a wave-length of 8 mm
a length of 60 mm
steel having an ultimate tensile strength of
130 kg/mm.sup.2.
______________________________________
Claim 4
Dependent Claim
22 words
Fiber according to claim 2, when used in an amount of 0.25 to 0.5% by volume in a conventional concrete for building.
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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) | 1989-04-28 | 1989-10-28 | 1990-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-28 | 1993-10-28 | 1994-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-28 | 1997-10-28 | 1998-04-29 | $7700.00 | Window Closed / Lapsed |