US3304123A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Side cutting mining machine having swingable augers
Assignee: Individual
•
Filing: 1965-07-20
•
Granted: 1967-02-14
•
Expires: 1985-07-20
Abstract
No abstract record available.
Inventors
- 👤 Myron T Coffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:37
CPC Classifications
E; E21; E21C; E21C27/00; E21C27/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A MINING MACHINE COMPRISING A FRAME HAVING A SKIDABLE BASE, MEANS FOR PROGRESSIVELY MOVING SAID BASE HORIZONTALLY IN A DIRECTION TRANSVERSE THEREOF, CONVEYOR MEANS MOUNTED ON SAID BASE AND EXTENDING LONGITUDINALLY OF SAID FRAME, A TURNTABLE PIVOTALLY MOUNTED ADJACENT THE FRONT OF SAID FRAME AND MOVABLE IN A HORIZONTAL PLANE, HYDRAULIC CONTROL MEANS MOUNTED AT OPPOSITE SIDES OF SAID FRAME AND CONNECTED WITH SAID TURNTABLE FOR CONTROLLING THE ORIENTATION OF SAID TURNTABLE, A SET OF ARMS MOUNTED ADJACENT THE FRONT OF SAID TURNTABLE, A CUTTER HEAD JOURNALED IN EACH OF SAID ARMS ON AXES SUB-
Claim 2
Dependent Claim
95 words
A MINING MACHINE COMPRISING A FRAME HAVING A SKIDABLE BASE, MEANS FOR PROGRESSIVELY MOVING SAID BASE HORIZONTALLY IN A DIRECTION TRANSVERSE THEREOF, CONVEYOR MEANS MOUNTED ON SAID BASE AND EXTENDING LONGITUDINALLY OF SAID FRAME, A TURNTABLE PIVOTALLY MOUNTED ADJACENT THE FRONT OF SAID FRAME AND MOVABLE IN A HORIZONTAL PLANE, HYDRAULIC CONTROL MEANS MOUNTED AT OPPOSITE SIDES OF SAID FRAME AND CONNECTED WITH SAID TURNTABLE FOR CONTROLLING THE ORIENTATION OF SAID TURNTABLE, A SET OF ARMS MOUNTED ADJACENT THE FRONT OF SAID TURNTABLE, A CUTTER HEAD JOURNALED IN EACH OF SAID ARMS ON AXES SUB-
References Cited (Backward Citations)
US2841379A
Cited
US2967701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |