Patent US3245722A successfully refreshed from Google Patents.
US3245722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mining face conveyor
Assignee: Stamicarbon BV
•
Filing: 1962-09-04
•
Granted: 1966-04-12
•
Expires: 1982-09-04
Abstract
No abstract record available.
Inventors
- 👤 Frans H Creuels
- 👤 Johannes M Hermes
- 👤 Izaak S Van Dommelen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:55
CPC Classifications
E; E21; E21F; E21F13/00; E21F13/06; E21F13/066; E21C; E21C35/00; E21C35/08; E21C35/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
MINING APPARATUS COMPRISING A FACE CONVEYOR HAVING A SLOPING SIDE WALL AND A PLATE MEMBER EXTENDING OUTWARDLY FROM THE BOTTOM OF SAID SIDE WALL, AND A COALGETTING MACHINE SLIDABLY MOUNTED ON SAID SLOPING SIDE WALL ABOVE SAID PLATE MEMBER, SAID PLATE MEMBER EXTENDING DOWNWARDLY TO A LEVEL BELOW THE LOWER EDGE OF THE INCLINED SIDE WALL, WHEREBY THE WEIGHT OF THE CONVEYOR IS TRANSMITTED TO THE FLOOR THROUGH ITS REMOTE SIDE WALL AND THE OUTER EDGE OF SAID PLATE MEMBER, AND SAID PLATE MEMBER ENGAGING THE COAL FACE AND THEREBY SERVING TO LIMIT THE OUT OF SAID COAL-GETTING MACHINE.
Claim 2
Dependent Claim
99 words
MINING APPARATUS COMPRISING A FACE CONVEYOR HAVING A SLOPING SIDE WALL AND A PLATE MEMBER EXTENDING OUTWARDLY FROM THE BOTTOM OF SAID SIDE WALL, AND A COALGETTING MACHINE SLIDABLY MOUNTED ON SAID SLOPING SIDE WALL ABOVE SAID PLATE MEMBER, SAID PLATE MEMBER EXTENDING DOWNWARDLY TO A LEVEL BELOW THE LOWER EDGE OF THE INCLINED SIDE WALL, WHEREBY THE WEIGHT OF THE CONVEYOR IS TRANSMITTED TO THE FLOOR THROUGH ITS REMOTE SIDE WALL AND THE OUTER EDGE OF SAID PLATE MEMBER, AND SAID PLATE MEMBER ENGAGING THE COAL FACE AND THEREBY SERVING TO LIMIT THE OUT OF SAID COAL-GETTING MACHINE.
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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |