US3091440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutter-loaders for mining minerals
Assignee: Mavor and Coulson Ltd
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Filing: 1960-11-29
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Granted: 1963-05-28
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Expires: 1980-11-29
Abstract
No abstract record available.
Inventors
- 👤 Gillespie William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:28
CPC Classifications
E; E21; E21C; E21C25/00; E21C25/22; E21C25/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A CUTTER-LOADER OF THE TYPE IN WHICH THE WORK OF CUTTING FROM A MINERAL SEAM IS DONE BY ENDLESS CHAINS EQUIPPED WITH CUTTING TOOLS DRIVEN TO TRAVEL IN ENDLESS PATHS AROUND SUPPORTING JIBS, THE CUTTER-LOADER COMPRISING, IN THE ORDER STATED FROM FRONT TO REAR, A SINGLE LEADING JIB AT ABOUT MINE LEVEL FOR A CUTTER-CHAIN TO UNDER-CUT THE TERMINAL SEAM, A TRANSVERSE CONVEYOR ALSO AT ABOUT FLOOR LEVEL FOR THE MINERAL AND GUMMINGS LEFT BEHIND SAID JIB FOLLOWING THE WORK OF SAID CUTTER-CHAIN, SAID CONVEYOR BEING OF THE HELICAL-WORM GUMMER TYPE IN WHICH THE WORM ROTATES WITHIN A CASING AND CONVEYS GUMMINGS AND SMALL MINERAL MATTER ACROSS AND BEYOND THE MACHINE, AND A TRAILING ASSEMBLY OF SUPERPOSED JIBS FOR A TRANSVERSE LOADER CHAIN AT ABOUT FLOOR LEVEL AND FOR ONE OR MORE CUTTER-CHAINS REACHING FROM ABOVE SAID LOADER CHAIN NEARLY TO MINE ROOF LEVEL, THE LOADER CHAIN BEING DRIVEN TO DISCHARGE INWARDS TOWARDS AND BEYOND THE MACHINE THE MINERAL CUT DOWN BY ONE OR MORE CUTTERCHAINS ABOVE.
Claim 2
Dependent Claim
167 words
A CUTTER-LOADER OF THE TYPE IN WHICH THE WORK OF CUTTING FROM A MINERAL SEAM IS DONE BY ENDLESS CHAINS EQUIPPED WITH CUTTING TOOLS DRIVEN TO TRAVEL IN ENDLESS PATHS AROUND SUPPORTING JIBS, THE CUTTER-LOADER COMPRISING, IN THE ORDER STATED FROM FRONT TO REAR, A SINGLE LEADING JIB AT ABOUT MINE LEVEL FOR A CUTTER-CHAIN TO UNDER-CUT THE TERMINAL SEAM, A TRANSVERSE CONVEYOR ALSO AT ABOUT FLOOR LEVEL FOR THE MINERAL AND GUMMINGS LEFT BEHIND SAID JIB FOLLOWING THE WORK OF SAID CUTTER-CHAIN, SAID CONVEYOR BEING OF THE HELICAL-WORM GUMMER TYPE IN WHICH THE WORM ROTATES WITHIN A CASING AND CONVEYS GUMMINGS AND SMALL MINERAL MATTER ACROSS AND BEYOND THE MACHINE, AND A TRAILING ASSEMBLY OF SUPERPOSED JIBS FOR A TRANSVERSE LOADER CHAIN AT ABOUT FLOOR LEVEL AND FOR ONE OR MORE CUTTER-CHAINS REACHING FROM ABOVE SAID LOADER CHAIN NEARLY TO MINE ROOF LEVEL, THE LOADER CHAIN BEING DRIVEN TO DISCHARGE INWARDS TOWARDS AND BEYOND THE MACHINE THE MINERAL CUT DOWN BY ONE OR MORE CUTTERCHAINS ABOVE.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |