US3136531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing pulverulent materials
Assignee: Shell USA Inc
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Filing: 1962-02-27
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Granted: 1964-06-09
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Expires: 1982-02-27
Abstract
No abstract record available.
Inventors
- 👤 Antonius I Wesselingh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:29
CPC Classifications
B; B01; B01F; B01F33/00; B01F33/40; B01F33/406; B01F33/4062
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A METHOD OF MIXING PULVERULENT MATERIALS IN A BUNKER HAVING A POROUS FLOOR THROUGH WHICH AERATING GAS IS SUPPLIED UPWARDS FOR AERATING SAID MATERIALS ABOVE SAID FLOOR, SAID METHOD COMPRISING THE OPERATIONS OF: (A) CONTROLLING THE FLOW OF SAID AERATING GAS THROUGH AN INTERMEDIATE SECTION OF SAID FLOOR EXTENDING SUBSTANTIALLY ACROSS THE BUNKER TO FLUIDIZE SAID PULVERULENT MATERIALS ABOVE SAID SECTION THROUGHOUT THE HEIGHT OF SAID MATERIALS, AND (B) SIMULTANEOUSLY CONTROLLING THE FLOW OF SAID AERATING GAS THROUGH LATERAL SECTIONS OF THE FLOOR SITUATED CONTIGUOUSLY ON EITHER SIDE OF SAID INTERMEDIATE SECTION TO AERATE THE MATERIALS ABOVE SAID LATERAL SECTIONS TO A LESSER DEGREE THAN THE MATERIALS ABOVE SAID INTERMEDIATE SECTION. (C) THE ZONES OF SAID BUNKER ABOVE THE SAID FLOOR SECTIONS BEING IN UNRESTRICTED LATERAL COMMUNICATION WITH EACH OTHER, WHEREBY SAID MATERIALS CIRCULATE BY UPFLOW ABOVE SAID INTERMEDIATE SECTION AND DOWNFLOW ABOVE SAID LATERAL SECTIONS.
Claim 2
Independent Claim
146 words
A METHOD OF MIXING PULVERULENT MATERIALS IN A BUNKER HAVING A POROUS FLOOR THROUGH WHICH AERATING GAS IS SUPPLIED UPWARDS FOR AERATING SAID MATERIALS ABOVE SAID FLOOR, SAID METHOD COMPRISING THE OPERATIONS OF: (A) CONTROLLING THE FLOW OF SAID AERATING GAS THROUGH AN INTERMEDIATE SECTION OF SAID FLOOR EXTENDING SUBSTANTIALLY ACROSS THE BUNKER TO FLUIDIZE SAID PULVERULENT MATERIALS ABOVE SAID SECTION THROUGHOUT THE HEIGHT OF SAID MATERIALS, AND (B) SIMULTANEOUSLY CONTROLLING THE FLOW OF SAID AERATING GAS THROUGH LATERAL SECTIONS OF THE FLOOR SITUATED CONTIGUOUSLY ON EITHER SIDE OF SAID INTERMEDIATE SECTION TO AERATE THE MATERIALS ABOVE SAID LATERAL SECTIONS TO A LESSER DEGREE THAN THE MATERIALS ABOVE SAID INTERMEDIATE SECTION. (C) THE ZONES OF SAID BUNKER ABOVE THE SAID FLOOR SECTIONS BEING IN UNRESTRICTED LATERAL COMMUNICATION WITH EACH OTHER, WHEREBY SAID MATERIALS CIRCULATE BY UPFLOW ABOVE SAID INTERMEDIATE SECTION AND DOWNFLOW ABOVE SAID LATERAL SECTIONS.
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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |