US3714786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drainage culvert
Assignee: Armco Inc
•
Filing: 1970-08-03
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Granted: 1973-02-06
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Expires: 1990-08-03
Abstract
Abstract An open slot culvert for positioning in a drainage area with the open slot at the top so that any surface drainage water will flow through the slot and directly into the culvert, including a method and apparatus for its manufacture. The improved open slot culvert comprises a metallic, pipe section, split longitudinally along its upper side to form a narrow slot, and grate means, including two spaced, vertical bearing members joined by spacer means, secured in the slot. The method of making the improved open slot culvert includes the steps of providing two elongated, parallel, vertical members in spaced relation having a plurality of spacer means therebetween, longitudinally splitting the upper side of a metallic pipe section to form a narrow slot, and properly positioning the grate means within the narrow slot. The apparatus for making the improved open slot culvert generally comprises an entry pipe station, a pipe clamp, saw and tack welding station, and a finish welding and exit station.
Inventors
- 👤 R Evans
- 👤 H Blower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:11
CPC Classifications
E; E02; E02B; E02B11/00; E02B11/005
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
202 words
An open slot culvert of improved ring compression strength, for positioning in a drainage area with the open slot at the top so that any surface drainage water will flow through the slot and directly into the culvert, the culvert being satisfactorily back filled by utilizing any suitable maTerial with the upper surface of the drainage area substantially on a level with the upper surface of the open slot of the culvert, which comprises a metallic pipe section split longitudinally along its upper side to form a narrow slot, and grate means secured in said slot, said grate means comprising two spaced, vertical bearing members substantially normal to the axis of said pipe section and extending longitudinally over the major portion of the length of said slot, the major portion of each said bearing member extending transversely above the neutral axis of the pipe section wall, said bearing members being secured to said pipe section by fillet welds joining the surface of said vertical bearing members and said pipe section and being joined by spacer means substantially normal to said vertical bearing members and substantially at the neutral axis of the pipe section wall so as to provide improved ring compression strength.
Claim 2
Dependent Claim
202 words
An open slot culvert of improved ring compression strength, for positioning in a drainage area with the open slot at the top so that any surface drainage water will flow through the slot and directly into the culvert, the culvert being satisfactorily back filled by utilizing any suitable maTerial with the upper surface of the drainage area substantially on a level with the upper surface of the open slot of the culvert, which comprises a metallic pipe section split longitudinally along its upper side to form a narrow slot, and grate means secured in said slot, said grate means comprising two spaced, vertical bearing members substantially normal to the axis of said pipe section and extending longitudinally over the major portion of the length of said slot, the major portion of each said bearing member extending transversely above the neutral axis of the pipe section wall, said bearing members being secured to said pipe section by fillet welds joining the surface of said vertical bearing members and said pipe section and being joined by spacer means substantially normal to said vertical bearing members and substantially at the neutral axis of the pipe section wall so as to provide improved ring compression strength.
Claim 3
Dependent Claim
202 words
An open slot culvert of improved ring compression strength, for positioning in a drainage area with the open slot at the top so that any surface drainage water will flow through the slot and directly into the culvert, the culvert being satisfactorily back filled by utilizing any suitable maTerial with the upper surface of the drainage area substantially on a level with the upper surface of the open slot of the culvert, which comprises a metallic pipe section split longitudinally along its upper side to form a narrow slot, and grate means secured in said slot, said grate means comprising two spaced, vertical bearing members substantially normal to the axis of said pipe section and extending longitudinally over the major portion of the length of said slot, the major portion of each said bearing member extending transversely above the neutral axis of the pipe section wall, said bearing members being secured to said pipe section by fillet welds joining the surface of said vertical bearing members and said pipe section and being joined by spacer means substantially normal to said vertical bearing members and substantially at the neutral axis of the pipe section wall so as to provide improved ring compression strength.
Claim 4
Dependent Claim
202 words
An open slot culvert of improved ring compression strength, for positioning in a drainage area with the open slot at the top so that any surface drainage water will flow through the slot and directly into the culvert, the culvert being satisfactorily back filled by utilizing any suitable maTerial with the upper surface of the drainage area substantially on a level with the upper surface of the open slot of the culvert, which comprises a metallic pipe section split longitudinally along its upper side to form a narrow slot, and grate means secured in said slot, said grate means comprising two spaced, vertical bearing members substantially normal to the axis of said pipe section and extending longitudinally over the major portion of the length of said slot, the major portion of each said bearing member extending transversely above the neutral axis of the pipe section wall, said bearing members being secured to said pipe section by fillet welds joining the surface of said vertical bearing members and said pipe section and being joined by spacer means substantially normal to said vertical bearing members and substantially at the neutral axis of the pipe section wall so as to provide improved ring compression strength.
Claim 5
Dependent Claim
17 words
The culvert according to claim 1, wherein said spacer means comprises a plurality of cross bar spacers.
Claim 6
Dependent Claim
14 words
The culvert according to claim 1, wherein said spacer means comprises a sinusoidal member.
Claim 7
Dependent Claim
41 words
The culvert according to claim 1, wherein said pipe section has a protective coating and is helically corrugated and continuously butt welded on a helical angle such that the outside surface thereof across said weld is smooth and free from discontinuities.
Claim 8
Dependent Claim
18 words
The culvert according to claim 1, wherein said pipe section has a protective coating and is annularly corrugated.
Claim 9
Dependent Claim
16 words
The culvert according to claim 1, wherein said fillet welds are provided with a protective coating.
Claim 10
Dependent Claim
12 words
The culvert according to claim 6, wherein said protective coating comprises zinc.
Claim 11
Dependent Claim
15 words
The culvert according to claim 6, wherein said protective coating comprises an asphalt base paint.
Claim 12
Dependent Claim
15 words
The culvert according to claim 1, wherein said grate means is galvanized as a unit.
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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) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |