Patent US2721035A successfully refreshed from Google Patents.
← Back to Patent Explorer
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
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

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.

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

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag