Vibratory roller
Abstract
Abstract A VIBRATORY ROLLER HAVING A FRAME JOURNALING AN EARTH COMPACTING DRUM ADAPTED TO BE ROLLED OVER THE GROUND SURFACE, A POWER DRIVEN VIBRATING MECHANISM JOURNALED AXIALLY WITHIN THE DRUM, SAID MECHANISM INCLUDING MEANS FORMING DIAMETRICALLY OPPOSING FIRST AND SECOND LIQUID CHAMBERS WHICH COUNTERBALANCE EACH OTHER WHEN THE FIRST CHAMBER IS FILLED WITH LIQUID AND THE SECOND CHAMBER IS EMPTY, PASSAGE MEANS PROVIDING OPEN COMMUNICATION BETWEEN THE CHAMBERS, AND MEANS FOR ADMITTING GAS UNDER PRESSURE TO EITHER CHAMBER TO FORCE A DESIRED AMOUNT OF LIQUID FROM ONE CHAMBER TO THE OTHER TO SELECTIVELY DESTROY SAID COUNTERBALANCE AND CAUSE THE MECHANISM TO VIBRATE THE DRUM AT ANY DESIRED AMPLITUDE OR TO RESTORE SAID COUNTERBALANCE AND TERMINATE DRUM VIBATION.
Inventors
- 👤 Melvin H Boone
- 👤 Brian J Bush
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |