Patent US3844670A successfully refreshed from Google Patents.
US3844670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for restoring concrete road surfaces
Assignee: Individual
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Filing: 1972-07-07
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Granted: 1974-10-29
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Expires: 1992-07-07
Abstract
Abstract Process and apparatus for restoring the driving surface of concrete highways comprising, in the first instance, use of a compactor equipped with sharp pointed teeth adapted upon rolling the compactor over the highway to puncture, fragment and disintegrate the surface layer of the concrete to a controlled thickness, thereby to remove the smooth or slick surface layer and restore the driving surface to a skid resistant textured character. Where highway wear has been excessive and/or following one or more of the restorative procedures above described, the process and apparatus comprise, in the second instance, use of slip form paving means and special paving techniques to resurface the highway with concrete, and in particular to continuously resurface in one pass one traffic lane and the contiguous shoulder without fixed forms or special shoring-up of the shoulder and without closing the other lane of the highway to regular traffic.
Inventors
- 👤 G Perkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:10
CPC Classifications
E; E01; E01C; E01C23/00; E01C23/06; E01C23/08; E01C23/085; E01C23/088; E01C19/00; E01C19/48; E01C19/4833; E01C19/4853; E01C19/486
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
145 words
Apparatus for applying new concrete to an existing concrete road surface having two finished lanes of travel and a finished shoulder contiguous with each of said lanes on substantially the same level therewith, paving means for continuously applying a concrete surface over the entire width of one of said lanes and the contiguous shoulder upon movement of said paving means in a forward direction, rigid frame means for supporting said paving means above said one lane and shoulder, and ground support means for providing mobile ground support for said frame at one side from the other of said lanes closely adjacent the inner edge thereof and at the other side from said one paved shoulder adjacent the outer edge thereof and spaced forwardly of said paving means, the remainder of said frame being devoid of ground support and being counterbalanced from said ground support means.
Claim 2
Dependent Claim
145 words
Apparatus for applying new concrete to an existing concrete road surface having two finished lanes of travel and a finished shoulder contiguous with each of said lanes on substantially the same level therewith, paving means for continuously applying a concrete surface over the entire width of one of said lanes and the contiguous shoulder upon movement of said paving means in a forward direction, rigid frame means for supporting said paving means above said one lane and shoulder, and ground support means for providing mobile ground support for said frame at one side from the other of said lanes closely adjacent the inner edge thereof and at the other side from said one paved shoulder adjacent the outer edge thereof and spaced forwardly of said paving means, the remainder of said frame being devoid of ground support and being counterbalanced from said ground support means.
Claim 3
Dependent Claim
62 words
The apparatus of claim 1 wherein said ground support means is provided in essentially three locations corresponding to three corners of a rectangle and the fourth corner is unsupported, and wherein said frame comprises a first beam extending diagonally between two support corners and a second beam extending diagonally from the other support corner over said first beam to said unsupported corner.
Claim 4
Dependent Claim
142 words
Apparatus for resurfacing concrete highways with concrete comprising slip form paving means for continuously forming a fresh layer of concrete over approximately one-half the width of the highway upon movement in a forward direction, first mobile support means riding on the other half of the highway closely adjacent the half being paved and supporting the contiguous side of said slip form paving means, second mobile support means riding on said one-half of the highway forwardly of said slip form paving means and adjacent the other side thereof for supporting the front outside corner portion of said paving means, and means for providing cantilevered and counterbalanced support from said first and second support means for the remaining portions of said paving means, whereby said paving means is supported and rides solely on the existing highway and is suspended over the area being paved.
Claim 5
Dependent Claim
142 words
Apparatus for resurfacing concrete highways with concrete comprising slip form paving means for continuously forming a fresh layer of concrete over approximately one-half the width of the highway upon movement in a forward direction, first mobile support means riding on the other half of the highway closely adjacent the half being paved and supporting the contiguous side of said slip form paving means, second mobile support means riding on said one-half of the highway forwardly of said slip form paving means and adjacent the other side thereof for supporting the front outside corner portion of said paving means, and means for providing cantilevered and counterbalanced support from said first and second support means for the remaining portions of said paving means, whereby said paving means is supported and rides solely on the existing highway and is suspended over the area being paved.
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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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |