Device for anchoring a tunnel driving device in a tunnel shaft
Abstract
Abstract A DEVICE FOR CLAMPING A DRIVING OR DRILLING MACHINE IN RELATION TO A SURROUNDING SHAFT OR TUNNEL WALL INCLUDES ONE OR MORE CLAWS ARRANGES AT AT LEAST TWO LONGITUDINALLY SPACED LOCATIONS AND CONNECTED TO THE DRILLING MACHINE BY SHORT LINK ELEMENTS. EACH LINK ELEMENT IS PROVIDED AT ITS ONE END TO THE DRILLING MACHINE AND PIVOTED IN A UNIVERSAL MANNER TO THE CLAW AT ITS OPPOSITE END. TWO LONGITUDINALLY SPACED CLAW ELEMENTS ARE CONNECTED TOGETHER BY MEANS OF A FLUID PISTON AND CYLINDER CONNECTION WHICH EXTENDS THEREBETWEEN. THE LINK CONNECTION AND THE FLUID PISTON AND CYLINDER CONNECTION TO EACH JAW IS SUCH THAT WHEN THE FLUID PISTON AND CYLINDER APPLIES SUBSTANTIALLY DIRECTED AXIAL FORCE IN ONE DIRECTION THE CLAWS ARE DISENGAGED FROM THE WALL AND WHEN IT APPLIES AND AXIAL FORCE IN AN OPPOSITE DIRECTION THE CLAWS ARE ENGAGED WITH THE WALL. THE CONNECTION OF THE FLUID PISTON AND CYLINDER COMBINATION TO EACH CLAW IS AT A LOCATION OFFSET FROM THE CONNECTION OF THE LINK MEMBER WHICH CONNECTS THE CLAW TO THE DRILLING MACHINE.
Inventors
- 👤 Gerd Kampf-Emden
- 👤 Heinz Horst
- 👤 Friedrich Klapdohr
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |