US3136535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mining machine having lateral roller cutters
Assignee: Gebr Eickhoff Maschinenfabrik u Eisengiesserei GmbH
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Filing: 1962-03-28
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Granted: 1964-06-09
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Expires: 1982-03-28
Abstract
No abstract record available.
Inventors
- 👤 Lanfermann Willy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:51
CPC Classifications
E; E21; E21C; E21C27/00; E21C27/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A MINING MACHINE, ESPECIALLY FOR MINING COAL, WHICH COMPRISES: FRAME MEANS, SUPPORTING ARMS RESPECTIVELY PIVOTALLY SUPPORTED BY SAID FRAME MEANS, TWO CUTTING ROLLERS SUPPORTED BY SAID SUPPORTING ARMS AND MOVABLE INTO ENGAGEMENT WITH A BOTTOM AND A CEILING PORTION OF A MINE SEAM TO BE MINED, TRANSVERSE CONVEYOR MEANS ARRANGED BETWEEN SAID CUTTING ROLLERS FOR RECEIVING MATERIAL CUT BY SAID CUTTING ROLLERS, THE WIDTH OF SAID TRANSVERSE CONVEYOR MEANS EQUALLING AT LEAST THE MAXIMUM DISTANCE BETWEEN SAID TWO CUTTING ROLLERS, AND LONGITUDINAL CONVEYOR MEANS FOR RECEIVING MINED MATERIAL FROM SAID TRANSVERSE CONVEYOR MEANS, SAID TRANSVERSE CONVEYOR MEANS BEING DISPLACEABLE WITHIN CERTAIN LIMITS ON SAID FRAME MEANS AND SUBSTANTIALLY PARALLEL TO SAID LONGITUDINAL CONVEYOR MEANS.
Claim 2
Dependent Claim
114 words
A MINING MACHINE, ESPECIALLY FOR MINING COAL, WHICH COMPRISES: FRAME MEANS, SUPPORTING ARMS RESPECTIVELY PIVOTALLY SUPPORTED BY SAID FRAME MEANS, TWO CUTTING ROLLERS SUPPORTED BY SAID SUPPORTING ARMS AND MOVABLE INTO ENGAGEMENT WITH A BOTTOM AND A CEILING PORTION OF A MINE SEAM TO BE MINED, TRANSVERSE CONVEYOR MEANS ARRANGED BETWEEN SAID CUTTING ROLLERS FOR RECEIVING MATERIAL CUT BY SAID CUTTING ROLLERS, THE WIDTH OF SAID TRANSVERSE CONVEYOR MEANS EQUALLING AT LEAST THE MAXIMUM DISTANCE BETWEEN SAID TWO CUTTING ROLLERS, AND LONGITUDINAL CONVEYOR MEANS FOR RECEIVING MINED MATERIAL FROM SAID TRANSVERSE CONVEYOR MEANS, SAID TRANSVERSE CONVEYOR MEANS BEING DISPLACEABLE WITHIN CERTAIN LIMITS ON SAID FRAME MEANS AND SUBSTANTIALLY PARALLEL TO SAID LONGITUDINAL CONVEYOR MEANS.
References Cited (Backward Citations)
GB790983A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |