US3071049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for laying a bituminous road mat
Assignee: Impresa Pizzarotti & C S R L
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Filing: 1959-12-21
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Granted: 1963-01-01
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Expires: 1979-12-21
Abstract
No abstract record available.
Inventors
- 👤 Pizzarotti Pietro
- 👤 Leoncini Giovanni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:06
CPC Classifications
G; G01; G01C; G01C15/00; G01C15/002; E; E01; E01C; E01C19/00; E01C19/004; E01C19/006; E01C19/48; E01C19/4866; E01C19/4873
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A METHOD FOR LAYING A ROAD MAT ON A VERTICALLY CURVED ROAD BED WITH A ROAD MACHINE WHICH IS EQUIPPED WITH A ROAD MAT LEVELING MEMBER AND WITH MEANS FOR ADJUSTING SAID MEMBER VERTICALLY TO CONTROL THE THICKNESS OF SAID MAT AND THE LOCATION OF ITS UPPER SURFACE, SAID METHOD COMPRISING PROVIDING AN OPTICAL LINE OF REFERENCE EXTENDING PARALLEL TO THE CHORD OF AN ARCUATE PORTION OF SAID ROAD BED, MOVING A CONTROLLING MEMBER, WHICH IS MOUNTED ON SAID LEVELING MEMBER AND WHICH HAS A CONTROLLING CURVED SURFACE, THE ORDINATES OF WHICH REPRESENT THE VERTICAL CONTOUR OF SAID ARCUATE PORTION, PAST A VERTICAL PLANE CONTAINING SAID REFERENCE LINE AT A RATE PROPORTIONAL TO THE RATE OF TRAVEL OF THE MACHINE ALONG THE ROAD, AND MOVING SAID LEVELING MEMBER UP OR DOWN AS REQUIRED TO CAUSE SUCCESSIVE POINTS ON SAID CURVED SURFACE TO LIE ON SAID REFERENCE LINE AS THE MACHINE TRAVELS ALONG THE ROAD.
Claim 2
Independent Claim
154 words
A METHOD FOR LAYING A ROAD MAT ON A VERTICALLY CURVED ROAD BED WITH A ROAD MACHINE WHICH IS EQUIPPED WITH A ROAD MAT LEVELING MEMBER AND WITH MEANS FOR ADJUSTING SAID MEMBER VERTICALLY TO CONTROL THE THICKNESS OF SAID MAT AND THE LOCATION OF ITS UPPER SURFACE, SAID METHOD COMPRISING PROVIDING AN OPTICAL LINE OF REFERENCE EXTENDING PARALLEL TO THE CHORD OF AN ARCUATE PORTION OF SAID ROAD BED, MOVING A CONTROLLING MEMBER, WHICH IS MOUNTED ON SAID LEVELING MEMBER AND WHICH HAS A CONTROLLING CURVED SURFACE, THE ORDINATES OF WHICH REPRESENT THE VERTICAL CONTOUR OF SAID ARCUATE PORTION, PAST A VERTICAL PLANE CONTAINING SAID REFERENCE LINE AT A RATE PROPORTIONAL TO THE RATE OF TRAVEL OF THE MACHINE ALONG THE ROAD, AND MOVING SAID LEVELING MEMBER UP OR DOWN AS REQUIRED TO CAUSE SUCCESSIVE POINTS ON SAID CURVED SURFACE TO LIE ON SAID REFERENCE LINE AS THE MACHINE TRAVELS ALONG THE ROAD.
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) | 1965-12-31 | 1966-07-02 | 1967-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-31 | 1970-07-02 | 1971-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-31 | 1974-07-02 | 1975-01-01 | $7700.00 | Window Closed / Lapsed |