US3198580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mining machine and control means therefor
Assignee: Jeffrey Galion Manufacturing Co
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Filing: 1960-07-19
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Granted: 1965-08-03
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Expires: 1980-07-19
Abstract
No abstract record available.
Inventors
- 👤 William R Eberle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:53
CPC Classifications
E; E21; E21C; E21C31/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
170 words
IN A MINING MACHINE FOR REMOVING SELECTED MATERIAL FROM A MINE FACE, AN ADJUSTABLE MINING HEAD INCLUDING A CUTTING AND BREAKING ELEMENT ADAPTED TO BE ADVANCED INTO THE MINE FACE FOR REMOVING THE SELECTED MATERIAL THEREFROM BY A CUTTING AND BREAKING ACTION, MEANS FOR ADJUSTING SAID MINING HEAD, SAID CUTTING AND BREAKING ELEMENT INCLUDING SENSING MEANS FOR SENSING MATERIAL OF THE MINE FACE WHICH IS DIFFERENT FROM THE SELECTED MATERIAL OF THE MINE FACE, A CONTROL SYSTEM OPERATING SAID ADJUSTING MEANS FOR ADJUSTMENT OF SAID MINING HEAD, SAID SENSING MEANS INCLUDING MEANS RESPONSIVE TO THE DEPTH OF PENETRATION OF THE SENSING MEANS INTO SAID DIFFERENT MATERIAL OF THE MINE FACE, AND SAID RESPONSIVE MEANS BEING CONNECTED TO THE CONTROL SYSTEM TO TRANSMIT A SIGNAL FROM THE SENSING MEANS TO THE CONTROL SYSTEM TO STOP OPERATION THEREOF WHEN THE MINING HEAD IS ADJUSTED SUCH THAT THE CUTTING AND BREAKING ELEMENT IS OPERATED IN SAID SELECTED MATERIAL AND ONLY SKIMS SAID DIFFERENT MATERIAL TO MAINTAIN THE MINING HEAD FIXED IN ADJUSTED POSITION.
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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |