Screed extension device
Abstract
Abstract A SCREED EXTENSION DEVICE IS DISCLOSED FOR USE IN CONJUNCTION WITH MACHINES FOR LAYING ASPHALT PAVEMENT. SUCH MACHINES NORMALLY EMPLOY A HOPPER FOR HOLDING HOT ASPHALT LOCATED SO AS TO DISCHARGE THIS ATERIAL INTO A DISTRIBUTION CHAMBER WHERE THE ASPHALT IS DISTRIBUTED GENERALLY OVER THE AREA TO BE PAVED. AS THE MACHINE IS MOVED A SCREED MEMBER AT THE REAR END OF THE DISTRIBUTION CHAMBER TENDS TO STRIKE OFF AND LEVEL OFF THE ASPHALT DEPOSITED THROUGH THE ACTION ACHIEVED IN THE DISTRIBUTION CHAMBER. THE SCREED EXTENSION DEVICES OF THE INVENTION ACT AS PART OF SUCH A PAVING MACHINE SO AS TO INCREASE THE DIMENSIONS OF THE DISTRIBUTION CHAMBER AND THE SCREED MEMBER AS THE PAVING MACHINE IS OPERATING SO THAT AREAS OF VARYING WIDTHS ON EACH SIDE OF THE PAVING MACHINE MAY BE PAVED.
Inventors
- 👤 Arne Poulsen
Bibliographic Details
Claims Analysis
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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) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |