Patent US4564313A successfully refreshed from Google Patents.
US4564313A
Expired / Lapsed
US
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Rectilinear culvert structure
Assignee: HY-SPAN SYSTEM Inc
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Filing: 1983-09-29
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Granted: 1986-01-14
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Expires: 2003-09-29
Abstract
Abstract A three-sided, rectilinear bridge or culvert structure comprises a pair of vertical sidewalls set in preformed or cast in place footers or existing supports and an integral, planar, horizontal span. The footers preferably include a sidewall receiving channel on their upper surfaces. There is no lower or bottom portion of the structure such as is found in conventional box culverts and thus, that region between the footers and sidewalls is open and readily permits water flow through the structure in its natural watercourse, lessening the likelihood of debris collection within the structure. The structure is cast concrete reinforced with conventional reinforcing bar or welded wire mesh. A wide range of rise/span (height/width) proportions may be accommodated in structures having spans up to about thirty feet.
Inventors
- 👤 Robert L. Niswander
- 👤 Tomy W. Cornwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:37
CPC Classifications
E; E01; E01F; E01F5/00; E01F5/005; E01D; E01D1/00; E01D2101/00; E01D2101/20; E01D2101/24; E01D2101/26
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
64 words
A bottomless concrete culvert assembly comprising, in combination, at least one unitary, rectilinear culvert structure and a pair of footers, said culvert structure having only one substantially planar span and a pair of parallel sidewalls integrally and rigidly formed with and extending substantially perpendicularly from said planar span, one each of said footers disposed in supporting relationship with a respective one of said sidewalls.
Claim 2
Dependent Claim
64 words
A bottomless concrete culvert assembly comprising, in combination, at least one unitary, rectilinear culvert structure and a pair of footers, said culvert structure having only one substantially planar span and a pair of parallel sidewalls integrally and rigidly formed with and extending substantially perpendicularly from said planar span, one each of said footers disposed in supporting relationship with a respective one of said sidewalls.
Claim 3
Dependent Claim
21 words
The culvert assembly of claim 1 wherein each of said footers includes means for laterally restraining said sidewalls of said assembly.
Claim 4
Dependent Claim
27 words
The culvert assembly of claim 2 wherein said lateral restraining means includes a channel on an upper surface of said footers for receiving one of said sidewalls.
Claim 5
Dependent Claim
49 words
The culvert assembly of claim 1 further including a pair of haunches, one of said pair of haunches disposed at each of a respective one of a pair of inside intersections of said sidewalls and said span and extending at least farther along said span than along said sidewalls.
Claim 6
Dependent Claim
14 words
The culvert assembly of claim 4 wherein said haunches are triangular in cross section.
Claim 7
Dependent Claim
103 words
A bottomless concrete culvert assembly comprising, in combination, at least one unitary, rectilinear culvert structure having only one substantially planar span and a pair of sidewalls, said sidewalls being integrally formed with and extending unidirectionally and substantially perpendicularly from said span, a pair of haunches, one of said haunches disposed at each of a respective one of a pair of inside intersections of said sidewalls and said span, and a pair of footers, each of said footers disposed in supporting relationship with a respective one of said sidewalls and including means on an upper surface for receiving a respective one of said sidewalls.
Claim 8
Dependent Claim
103 words
A bottomless concrete culvert assembly comprising, in combination, at least one unitary, rectilinear culvert structure having only one substantially planar span and a pair of sidewalls, said sidewalls being integrally formed with and extending unidirectionally and substantially perpendicularly from said span, a pair of haunches, one of said haunches disposed at each of a respective one of a pair of inside intersections of said sidewalls and said span, and a pair of footers, each of said footers disposed in supporting relationship with a respective one of said sidewalls and including means on an upper surface for receiving a respective one of said sidewalls.
Claim 9
Dependent Claim
27 words
The culvert assembly of claim 6 wherein said means on said footers includes a channel on its upper surface for receiving a respective one of said sidewalls.
Claim 10
Dependent Claim
27 words
The culvert assembly of claim 6 wherein said culvert structure further includes a bevelled edge at the outside intersection of each of said sidewalls and said span.
Claim 11
Dependent Claim
27 words
The culvert assembly of claim 6 further including a pair of through apertures, one of said apertures disposed in a respective one of each of said sidewalls.
Claim 12
Dependent Claim
26 words
The culvert assembly of claim 6 wherein said channel in said footers is slightly wider than the width of said one of said sidewalls received therein.
Claim 13
Dependent Claim
19 words
The culvert assembly of claim 6 further including road surface material disposed directly on a surface of said span.
Claim 14
Dependent Claim
31 words
The culvert assembly of claim 6 further including a pair of angled, planar flow deflectors disposed adjacent and at an angle to a respective one of said pair of vertical sidewalls.
Claim 15
Dependent Claim
33 words
The culvert assembly of claim 6 wherein said culvert structure includes a uniform recess on an end of said structure, said uniform recess extending across said horizontal span and along said vertical sidewalls.
Claim 16
Dependent Claim
33 words
The culvert assembly of claim 6 wherein said culvert structure includes a uniform projection on an end of said structure, said uniform projection extending across said horizontal span and along said vertical sidewalls.
Claim 17
Dependent Claim
28 words
The culvert assembly of claim 6 wherein said haunches are triangular in cross section and extend along said span a distance greater than they extend along said sidewalls.
Claim 18
Dependent Claim
128 words
A bottomless concrete culvert assembly comprising, in combination, at least one unitary, rectilinear culvert structure having only one substantially planar span portion, and a pair of parallel, sidewalls integrally formed with and extending perpendicularly and unidirectionally from said span portion and a pair of haunches disposed at inside intersections of said sidewalls and said span portion, and a pair of footers, one each of said footers disposed in supporting relationship with a respective one of said sidewalls, each of said footers including a channel on its upper surface for receiving and restraining said sidewalls against movement along a first axis and permitting movement of said sidewalls along a second axis normal to said first axis wherein the media spanned by said assembly may remain substantially in its course.
Claim 19
Dependent Claim
128 words
A bottomless concrete culvert assembly comprising, in combination, at least one unitary, rectilinear culvert structure having only one substantially planar span portion, and a pair of parallel, sidewalls integrally formed with and extending perpendicularly and unidirectionally from said span portion and a pair of haunches disposed at inside intersections of said sidewalls and said span portion, and a pair of footers, one each of said footers disposed in supporting relationship with a respective one of said sidewalls, each of said footers including a channel on its upper surface for receiving and restraining said sidewalls against movement along a first axis and permitting movement of said sidewalls along a second axis normal to said first axis wherein the media spanned by said assembly may remain substantially in its course.
Claim 20
Dependent Claim
61 words
The culvert assembly of claim 16 further including a plurality of said unitary culvert structures disposed in aligned relationship on a plurality of said footers and wherein at least one of said channels on said footers is at least twice as wide as the width of said sidewalls and said twice wide channel receives two of said sidewalls in side-to-side juxtaposition.
Claim 21
Dependent Claim
14 words
The culvert assembly of claim 16 wherein said haunches are triangular in cross section.
Claim 22
Dependent Claim
25 words
The culvert assembly of claim 16 wherein said haunches extend along said span portion at least twice as far as they extend along said sidewalls.
Claim 23
Dependent Claim
72 words
A bottomless modular concrete culvert assembly comprising, in combination, at least two unitary rectilinear culvert structures and a pair of footers, said culvert structures having only one substantially planar span, a pair of parallel sidewalls integrally and rigidly formed with and extending substantially perpendicularly from said planar span, one of said footers disposed in supporting relationship with a respective one of said sidewalls and said culvert structures disposed in aligned end-to-end juxtaposition.
Claim 24
Dependent Claim
72 words
A bottomless modular concrete culvert assembly comprising, in combination, at least two unitary rectilinear culvert structures and a pair of footers, said culvert structures having only one substantially planar span, a pair of parallel sidewalls integrally and rigidly formed with and extending substantially perpendicularly from said planar span, one of said footers disposed in supporting relationship with a respective one of said sidewalls and said culvert structures disposed in aligned end-to-end juxtaposition.
Claim 25
Dependent Claim
113 words
A bottomless modular concrete culvert assembly comprising, in combination, at least two unitary rectilinear culvert structures having only one substantially planar span and a pair of sidewalls, said sidewalls being integrally formed with and extending unidirectionally and substantially perpendicularly from said span, a pair of haunches, one of said haunches disposed at each of a respective one of a pair of inside intersections of said sidewalls and said span, and a pair of footers, one of said footers disposed in supporting relationship with a respective one of said sidewalls and including means on an upper surface for receiving a respective one of said sidewalls and said culvert structures disposed in aligned end-to-end juxtaposition.
Claim 26
Dependent Claim
113 words
A bottomless modular concrete culvert assembly comprising, in combination, at least two unitary rectilinear culvert structures having only one substantially planar span and a pair of sidewalls, said sidewalls being integrally formed with and extending unidirectionally and substantially perpendicularly from said span, a pair of haunches, one of said haunches disposed at each of a respective one of a pair of inside intersections of said sidewalls and said span, and a pair of footers, one of said footers disposed in supporting relationship with a respective one of said sidewalls and including means on an upper surface for receiving a respective one of said sidewalls and said culvert structures disposed in aligned end-to-end juxtaposition.
Claim 27
Dependent Claim
53 words
The culvert assembly of claim 20 further including a pair of haunches, one of said haunches disposed at each of a respective one of a pair of inside intersections of said sidewalls and said span of each of said culvert structures and extending at least farther along said span than along said sidewalls.
Claim 28
Dependent Claim
23 words
The culvert assembly of claim 21 wherein said haunches each extend along said span a distance greater than they extend along said sidewalls.
Claim 29
Dependent Claim
17 words
The culvert assembly of claim 16 wherein at least two culvert structures are disposed in end-to-end juxtaposition.
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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) | 1989-01-13 | 1989-07-15 | 1990-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-13 | 1993-07-15 | 1994-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-13 | 1997-07-15 | 1998-01-14 | $7700.00 | Window Closed / Lapsed |