Patent US2721035A successfully refreshed from Google Patents.
US2721035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for separating steel from slag
Assignee: Individual
•
Filing: 1952-09-15
•
Granted: 1955-10-18
•
Expires: 1972-09-15
Abstract
No abstract record available.
Inventors
- 👤 Frank E Lankford
- 👤 John L Glasser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:55
CPC Classifications
B; B02; B02C; B02C17/00; B02C17/02; B03; B03B; B03B9/00; B03B9/04; B03C; B03C1/00; B03C1/005; B07; B07B; B07B9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
201 words
IN APPARATUS FOR SEPARATING STEEL FROM SLAG, A ROTARY CYLINDER HAVING A PLURALITY OF PERFORATIONS IN THE WALL THEREOF, A PLURALITY OF INWARDLY PROJECTING BREAKER TEETH MOUNTED ON THE INNER SURFACE OF THE CYLINDER, MEANS INTRODUCING THE MATERIALS TO BE SEPARATED INTO ONE END OF SAID CYLINDER, MEANS DISCHARGING THE LARGER PARTICLES OF SAID MATERIALS AT THE OTHER END OF SAID CYLINDER, A BELT CONVEYOR BENEATH SAID CYLINDER IN POSITON TO RECEIVE THE MATERIALS PASSING THROUGH SAID PERFORATIONS AND THE MATERIALS DISCHARGED FROM THE END OF SAID CYLINDER, A MAGNETIC PULLEY OVER WHICH THE DISCHARGE END OF SAID BELT CONVEYOR PASSES, A RECEPTACLE BENEATH AND OUTWARDLY OF THE DISCHARGE END OF SAID CONVEYOR IN POSITION TO RECEIVE SLAG, A SECOND RECEPTACLE BENEATH SAID DISCHARGE END OF THE CONVEYOR IN POSITION TO RECEIVE THE LARGER SIZE PIECES OF STEEL, A DOWNWARDLY AND INWARDLY SLOPING GRIZZLY INWARDLY OF AND ADJACENT SAID SECOND RECEPTACLE IN POSITION TO RECEIVE THE MEDIUM AND SMALLER SIZE PIECES OF STEEL, THERE BEING OPENINGS BETWEEN THE BARS OF THE GRIZZLY OF A SIZE TO DISCHARGE SAID SMALLER SIZE PIECES, AND A RECEPTACLE AT THE LOWER END OF SAID GRIZZLY IN POSITION TO RECEIVE THE MEDIUM SIZE PIECES OF STEEL.
Claim 2
Dependent Claim
201 words
IN APPARATUS FOR SEPARATING STEEL FROM SLAG, A ROTARY CYLINDER HAVING A PLURALITY OF PERFORATIONS IN THE WALL THEREOF, A PLURALITY OF INWARDLY PROJECTING BREAKER TEETH MOUNTED ON THE INNER SURFACE OF THE CYLINDER, MEANS INTRODUCING THE MATERIALS TO BE SEPARATED INTO ONE END OF SAID CYLINDER, MEANS DISCHARGING THE LARGER PARTICLES OF SAID MATERIALS AT THE OTHER END OF SAID CYLINDER, A BELT CONVEYOR BENEATH SAID CYLINDER IN POSITON TO RECEIVE THE MATERIALS PASSING THROUGH SAID PERFORATIONS AND THE MATERIALS DISCHARGED FROM THE END OF SAID CYLINDER, A MAGNETIC PULLEY OVER WHICH THE DISCHARGE END OF SAID BELT CONVEYOR PASSES, A RECEPTACLE BENEATH AND OUTWARDLY OF THE DISCHARGE END OF SAID CONVEYOR IN POSITION TO RECEIVE SLAG, A SECOND RECEPTACLE BENEATH SAID DISCHARGE END OF THE CONVEYOR IN POSITION TO RECEIVE THE LARGER SIZE PIECES OF STEEL, A DOWNWARDLY AND INWARDLY SLOPING GRIZZLY INWARDLY OF AND ADJACENT SAID SECOND RECEPTACLE IN POSITION TO RECEIVE THE MEDIUM AND SMALLER SIZE PIECES OF STEEL, THERE BEING OPENINGS BETWEEN THE BARS OF THE GRIZZLY OF A SIZE TO DISCHARGE SAID SMALLER SIZE PIECES, AND A RECEPTACLE AT THE LOWER END OF SAID GRIZZLY IN POSITION TO RECEIVE THE MEDIUM SIZE PIECES OF STEEL.
References Cited (Backward Citations)
US39899A
Cited
US143745A
Cited
US296795A
Cited
US553891A
Cited
US1339300A
Cited
US706197A
Cited
US843466A
Cited
US1089238A
Cited
US1259983A
Cited
US1188203A
Cited
GB227019A
Cited
US1617919A
Cited
US1902911A
Cited
DE600395C
Cited
US1958351A
Cited
US2099133A
Cited
US2189711A
Cited
US2269046A
Cited
US2264204A
Cited
US2352712A
Cited
US2533357A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-17 | 1959-04-18 | 1959-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-17 | 1963-04-18 | 1963-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-17 | 1967-04-18 | 1967-10-18 | $7700.00 | Window Closed / Lapsed |