US3108788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling machine for cutting non-circular gallery
Assignee: Ateliers de Carspach SA
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Filing: 1961-01-13
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Granted: 1963-10-29
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Expires: 1981-01-13
Abstract
No abstract record available.
Inventors
- 👤 Allimann Georges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:22
CPC Classifications
E; E21; E21D; E21D9/00; E21D9/10; E21D9/11
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
133 words
IN A DRILLING MACHINE FOR THE EXCAVATION OF GALLERIES AND THE LIKE, MEANS FOR CUTTING A CIRCULAR BORE IN A MINE FACE COMPRISING ROTATABLY MOUNTED HEAD MEANS CARRYING FACE-STRIKING ELEMENTS THEREON, AND MEANS FOR CUTTING SUBSTANTIALLY ALL OF THE MATERIAL IN THE MINE FACE IN A NONCIRCULAR PATTERN ABOUT AND CONTIGUOUS WITH THE MATERIAL CUT BY SAID HEAD MEANS, SAID LAST MENTIONED MEANS COMPRISING A PLURALITY OF WANDERING DRILLING PLATES HAVING PICKS THEREON, A PLURALITY OF EXTENSIBLE ARMS EACH PIVOTED AT ONE END TO SAID HEAD MEANS AND EACH CARRYING AT THE OTHER END THEREOF ONE OF SAID WANDERING DRILLING PLATES, MEANS FOR MOVING EACH SAID WANDERING PLATE IN A CLOSED NON-CIRCULAR PATH ABOUT THE AXIS OF SAID HEAD MEANS, AND MEANS FOR ROTATING EACH SAID WANDERING DRILLING PLATE ABOUT ITS OWN AXIS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |