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US4775487A Expired / Lapsed US ⏱️ 0.0 years remaining

Rotating continuous separation system

Assignee: C0NSOLIDATION COAL Co
•
Filing: 1986-12-22
•
Granted: 1988-10-04
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Expires: 2006-12-22
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Abstract

Abstract A continuous separation apparatus having a plurality of separation chambers in a continuously rotating block between fixed end plates. The axis of the chambers, preferably cylinders, is parallel to the axis of rotation of the block, wherein the end plates are provided with stationary inlet and discharge ports which overlap openings in the cylinders as the cylinders rotate so that cylinders are constantly being filled by forcing a free-floating piston to one end of the cylinder, cylinder contents are separated by hydraulically forcing the piston toward the fill end of the cylinder where the liquid is removed through screen means at the fill end of the cylinder and solid contents evacuated through an end plate port. The cylinder block continues rotation to permit a constant flow into the apparatus, a continuous removal of separated fluid and a constant separated solids flow from the apparatus.

Inventors

  • 👤 Ahmed A. El-Saie

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 18:05
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/06

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 170 words
A method of separating coal from a mixture with water or water and gas in a rotary drum having circumferentially spaced separation chambers each containing a circumferential screen and a movable piston, the drum being mounted between first and second stationary end plates having apertures aligned with the separation chambers, including continuously repeating during cyclic rotation of the drum the steps of sequentially filling each separation chamber with the mixture through an aperture in the first and plate causing the piston to move toward the second end plate and exhaust fluid from the chamber, forcing liquid into the separation chamber through an aperture in the second end plate causing the piston to move toward the first end plate, and forcing the mixture into the screen to separate the coal from the mixture and exhaust the water or water and gas out an aperture in the first end plate, and forcing the piston through the screen to remove the coal from the chamber through an aperture in the first end plate.
Claim 2
Independent Claim 170 words
A method of separating coal from a mixture with water or water and gas in a rotary drum having circumferentially spaced separation chambers each containing a circumferential screen and a movable piston, the drum being mounted between first and second stationary end plates having apertures aligned with the separation chambers, including continuously repeating during cyclic rotation of the drum the steps of sequentially filling each separation chamber with the mixture through an aperture in the first and plate causing the piston to move toward the second end plate and exhaust fluid from the chamber, forcing liquid into the separation chamber through an aperture in the second end plate causing the piston to move toward the first end plate, and forcing the mixture into the screen to separate the coal from the mixture and exhaust the water or water and gas out an aperture in the first end plate, and forcing the piston through the screen to remove the coal from the chamber through an aperture in the first end plate.
Claim 3
Dependent Claim 12 words
Method as described in claim 1 carried out in an underground mine.
Claim 4
Dependent Claim 16 words
Method as described in claim 2 wherein the rotary drum is powered by a hydraulic motor.

References Cited (Backward Citations)

US2904835A Cited
US3999895A Cited
US4230733A Cited
US4389928A Cited
US4404101A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1991-10-04 1992-04-04 1992-10-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1995-10-04 1996-04-04 1996-10-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1999-10-04 2000-04-04 2000-10-04 $7700.00 Window Closed / Lapsed

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