Patent US3397783A successfully refreshed from Google Patents.
US3397783A
Expired / Lapsed
US
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Method and apparatus for cleaning horizontal rotary filters of the tilting cell type
Assignee: JBS USA LLC
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Filing: 1966-01-06
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Granted: 1968-08-20
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Expires: 1986-01-06
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Pearce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:55
CPC Classifications
B; B01; B01D; B01D37/00; B01D33/00; B01D33/15; B01D33/17; B01D33/19; B01D33/44; B01D33/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
THE METHOD OF DISCHARGING FILTER CAKE FROM A HORIZONTALLY ROTATING FILTER CELL IN WHICH THE FILTER CELL SURFACE IS INVERTED FOR CLEANING, AND CLEANING THE FILTER FABRIC AS WELL AS PREVENTING CRYSTALLINE GROWTH THEREON WHICH INVOLVES THE STEPS OF WASHING THE FILTER FABRIC WITH A LOW PRESSURE LIQUID AND CONTACTING THE FABRIC WITH A HIGH PRESSURE LIQUID IN AN OSCILLATING MANNER WHEREBY THE SPRAY FROM THE HIGH PRESSURE NOZZLE UNIFORMLY TRAVERSES A PATH ACROSS THE INVERTED SURFACE OF THE HORIZONTALLY MOVING FILTER CELL.
Claim 2
Independent Claim
83 words
THE METHOD OF DISCHARGING FILTER CAKE FROM A HORIZONTALLY ROTATING FILTER CELL IN WHICH THE FILTER CELL SURFACE IS INVERTED FOR CLEANING, AND CLEANING THE FILTER FABRIC AS WELL AS PREVENTING CRYSTALLINE GROWTH THEREON WHICH INVOLVES THE STEPS OF WASHING THE FILTER FABRIC WITH A LOW PRESSURE LIQUID AND CONTACTING THE FABRIC WITH A HIGH PRESSURE LIQUID IN AN OSCILLATING MANNER WHEREBY THE SPRAY FROM THE HIGH PRESSURE NOZZLE UNIFORMLY TRAVERSES A PATH ACROSS THE INVERTED SURFACE OF THE HORIZONTALLY MOVING FILTER CELL.
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) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |