US3078081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mining and loading machine
Assignee: Joy Manufacturing Co
•
Filing: 1958-10-03
•
Granted: 1963-02-19
•
Expires: 1978-10-03
Abstract
No abstract record available.
Inventors
- 👤 Neal W Densmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:39
CPC Classifications
E; E21; E21C; E21C27/00; E21C27/20; E21C27/22
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
111 words
A MINING MACHINE COMPRISING, IN COMBINATION, A MOBILE BASE HAVING INDEPENDENTLY OPERABLE SUPPORTING AND PROPELLING MEANS AT THE SIDES THEREOF FOR PROPELLING AND STEERING SAID BASE, A FRAME CARRIED BY SAID BASE, SAID FRAME HAVING A FORWARD OUTER PORTION, EACH OF SAID SUPPORTING AND PROPELLING MEANS HAVING LONGITUDINAL MOVEMENT RELATIVE TO SAID FRAME, CUTTING AND DISLODGING MECHANISM MOUNTED ON SAID OUTER PORTION OF SAID FRAME, A GATHERING DEVICE EXTENDING ALONG EACH SIDE OF SAID FRAME AND GUIDED FOR LONGITUDINAL MOVEMENT RELATIVE THERETO, AND A CONNECTION BETWEEN SAID GATHERING DEVICES RESPECTIVELY AND SAID LONGITUDINALLY MOVABLE SUPPORTING AND PROPELLING MEANS WHEREBY THE LATTER MAY MOVE SAID GATHERING DEVICES LONGITUDINALLY RELATIVE TO SAID FRAME.
Claim 2
Dependent Claim
111 words
A MINING MACHINE COMPRISING, IN COMBINATION, A MOBILE BASE HAVING INDEPENDENTLY OPERABLE SUPPORTING AND PROPELLING MEANS AT THE SIDES THEREOF FOR PROPELLING AND STEERING SAID BASE, A FRAME CARRIED BY SAID BASE, SAID FRAME HAVING A FORWARD OUTER PORTION, EACH OF SAID SUPPORTING AND PROPELLING MEANS HAVING LONGITUDINAL MOVEMENT RELATIVE TO SAID FRAME, CUTTING AND DISLODGING MECHANISM MOUNTED ON SAID OUTER PORTION OF SAID FRAME, A GATHERING DEVICE EXTENDING ALONG EACH SIDE OF SAID FRAME AND GUIDED FOR LONGITUDINAL MOVEMENT RELATIVE THERETO, AND A CONNECTION BETWEEN SAID GATHERING DEVICES RESPECTIVELY AND SAID LONGITUDINALLY MOVABLE SUPPORTING AND PROPELLING MEANS WHEREBY THE LATTER MAY MOVE SAID GATHERING DEVICES LONGITUDINALLY RELATIVE TO SAID FRAME.
Claim 3
Dependent Claim
73 words
A MINING MACHINE COMPRISING A MOBILE BASE HAVING SEPARATE SUPPORTING AND PROPELLING DEVICES AT THE SIDES THEREOF, A FRAME CARRIED BY SAID BASE, MEANS ON SAID FRAME FOR GUIDING SAID DEVICES FOR INDEPENDENT MOVEMENT LONGITUDINALLY RELATIVE TO SAID FRAME, GATHERING DEVICES SLIDABLY GUIDED ALONG THE SIDES OF SAID FRAME RESPECTIVELY, AND MEANS FOR CONNECTING SAID GATHERING DEVICES TO SAID SUPPORTING AND PROPELLING DEVICES RESPECTIVELY FOR INDEPENDENT LONGITUDINAL MOVEMENT THEREWITH RELATIVE TO SAID FRAME.
Claim 4
Dependent Claim
73 words
A MINING MACHINE COMPRISING A MOBILE BASE HAVING SEPARATE SUPPORTING AND PROPELLING DEVICES AT THE SIDES THEREOF, A FRAME CARRIED BY SAID BASE, MEANS ON SAID FRAME FOR GUIDING SAID DEVICES FOR INDEPENDENT MOVEMENT LONGITUDINALLY RELATIVE TO SAID FRAME, GATHERING DEVICES SLIDABLY GUIDED ALONG THE SIDES OF SAID FRAME RESPECTIVELY, AND MEANS FOR CONNECTING SAID GATHERING DEVICES TO SAID SUPPORTING AND PROPELLING DEVICES RESPECTIVELY FOR INDEPENDENT LONGITUDINAL MOVEMENT THEREWITH RELATIVE TO SAID FRAME.
References Cited (Backward Citations)
GB177813A
Cited
US2606643A
Cited
US2751208A
Cited
US2760767A
Cited
US2776809A
Cited
US2920879A
Cited
US2973949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |