Method and device for making slit walls
Abstract
Abstract PROPOSED IS A METHOD OF MAKING SLIT WALLS, WHEREIN A SLIT WALL SECTION PRESENT IN THE SOIL AND FILLED WITH A THIXOTROPIC LIQUID IN A KNOWN MANNER IS EXCAVATED AND RESPECTIVELY DRIVEN AHEAD AT A FRONT END BY MEANS OF A BUCKET CHAIN EXCAVATOR. ON THIS OCCASION, THE BUCKET CHAIN EXCAVATOR IS SEALED OFF AGAINST THE IDE WALLS OF THE EXCAVATED SLIT AND AGAINST THE SOLE OF THE SLIT SO THAT LIQUIDFILLED SPACES SEPARATE FROM EACH OTHER ARE CREATED IN FRONT AND IN THE REAR OF THE BUCKET CHAIN EXCAVATOR RESPECTIVELY. FOR PRODUCING THE DRIVE-ON FORCE FOR THE BUCKET CHAIN EXCAVATOR, THE LIQUID LEVEL IN THE SPACE LOCATED IN FRONT OF THE BUCKET CHAIN EXCAVATOR IS LOWERED AS COMPARED TO THE LIQUID LEVEL IN THE SPACE LOCATED BEHIND THE BUCKET CHAIN EXCAVATOR SO THAT THE BUCKET CHAIN EXCAVATOR IS DRIVEN FORWARD BY THE ROSTATIC PRESSURE DIFFERENTIAL. THE SLIT MADE IN THIS MANNER IS SUBSEQUENTLY FILLED UP WITH CONCRETE. D R A W I N G
Inventors
- 👤 Johann Morner
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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |