US3735595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced soil bridge
Assignee: United States Steel Corp
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Filing: 1971-10-29
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Granted: 1973-05-29
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Expires: 1991-10-29
Abstract
Abstract The structure of the invention is particularly useful in building reinforced soil arch bridges having relatively long transverse axial spans in the range of 30 feet or more. Structure includes a substantially cylindrical liner of relatively thin wall corrugated metal sheet. The structure is characterized by the provision of one or more open-top bins disposed along the upper surface of the liner. Earth-fill is compacted in layers in the bins and around the liner. The bins serve to confine and thus reinforce and strengthen the compacted earth-fill so that a reinforced soil bridge is formed. The bins also serve as stiffeners for the liner.
Inventors
- 👤 R Watkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:15
CPC Classifications
E; E01; E01F; E01F5/00; E01F5/005; F; F16; F16L; F16L9/00; F16L9/02; F16L9/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
56 words
A reinforced soil arch bridge comprising a metal liner having an upper portion, an open-top bin on said liner, said bin having opposed side and end walls projecting upwardly of said liner to a substantially common horizontal plane above the upper portion of said liner, and compacted earth-fill contained in said bin and surrounding said liner.
Claim 2
Dependent Claim
56 words
A reinforced soil arch bridge comprising a metal liner having an upper portion, an open-top bin on said liner, said bin having opposed side and end walls projecting upwardly of said liner to a substantially common horizontal plane above the upper portion of said liner, and compacted earth-fill contained in said bin and surrounding said liner.
Claim 3
Dependent Claim
62 words
A reinforced soil arch bridge comprising a metal liner having an upper portion, a plurality of open-top bins disposed along said liner, each of said open-top bins having opposed side and end walls projecting upwardly of said liner to a substantially common horizontal plane above the upper portion of said liner, and compacted earth-fill contained in said bins and surrounding said liner.
Claim 4
Dependent Claim
62 words
A reinforced soil arch bridge comprising a metal liner having an upper portion, a plurality of open-top bins disposed along said liner, each of said open-top bins having opposed side and end walls projecting upwardly of said liner to a substantially common horizontal plane above the upper portion of said liner, and compacted earth-fill contained in said bins and surrounding said liner.
Claim 5
Dependent Claim
17 words
A bridge as defined by claim 2 in which said bins are spaced apart along said liner.
Claim 6
Dependent Claim
133 words
A reinforced soil arch bridge comprising a longitudinally elongated metal liner, a plurality of open-top bins spaced longitudinally along said liner, said plurality of bins being formed of a pair of spaced fin elements projecting from but not abutting or attached to the exterior of said liner, a plurality of substantially triangular shaped plates spaced along the length of each of said fin elements, each of said triangular plates being disposed with its base attached upright and edgewise to the inner surface of its respective fin element and one edge thereof conforming with and attached to the exterior of said liner, the triangular plates attached to one fin element extending toward the triangular plates attached to the other of said fin elements, and compacted earth-fill contained in said bins and surrounding said liner.
Claim 7
Dependent Claim
133 words
A reinforced soil arch bridge comprising a longitudinally elongated metal liner, a plurality of open-top bins spaced longitudinally along said liner, said plurality of bins being formed of a pair of spaced fin elements projecting from but not abutting or attached to the exterior of said liner, a plurality of substantially triangular shaped plates spaced along the length of each of said fin elements, each of said triangular plates being disposed with its base attached upright and edgewise to the inner surface of its respective fin element and one edge thereof conforming with and attached to the exterior of said liner, the triangular plates attached to one fin element extending toward the triangular plates attached to the other of said fin elements, and compacted earth-fill contained in said bins and surrounding said liner.
Claim 8
Dependent Claim
24 words
A bridge as defined by claim 4 in which said fin elements are in abutment with and attached to the exterior of said liner.
Claim 9
Dependent Claim
41 words
A bridge as defined by claim 4 in which said fin elements are discontinuous forming separate sections and a pair of spaced triangular plates is attached to each of said fin element sections thereby forming spaced apart bins along said liner.
Claim 10
Dependent Claim
24 words
A bridge as defined by claim 6 in which said fin elements are in abutment with and attached to the exterior of said liner.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |