US4168913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for mixing particulate material
Assignee: AKO SUTHERLAND CO KK
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Filing: 1977-11-11
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Granted: 1979-09-25
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Expires: 1997-11-11
Abstract
Abstract After evacuating gas in advance from a bin, gas is injected from the bottom of the bin and stirs up particulate material to mix or homogenize the particulate material.
Inventors
- 👤 Motomi Kono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:41
CPC Classifications
B; B01; B01F; B01F33/00; B01F33/40; B01F33/401
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A process for mixing and homogenizing particulate material by injecting gas from an inlet provided at the bottom of a bin in which the particulate material to be treated is contained, which comprises the steps of: partly filling the interior of the bin with particulate material, evacuating gas from the bin until the gas pressure therewithin falls to a degree sufficiently below atmospheric pressure, and after evacuating the bin to a degree sufficiently below atmospheric pressure injecting pressurized gas through the inlet to said bin in almost the same quantity as the gas evacuated from the bin, the rate of injection of pressurized gas through said inlet being at least six times the rate of evacuation of gas from said bin during mixing of said material.
Claim 2
Dependent Claim
126 words
A process for mixing and homogenizing particulate material by injecting gas from an inlet provided at the bottom of a bin in which the particulate material to be treated is contained, which comprises the steps of: partly filling the interior of the bin with particulate material, evacuating gas from the bin until the gas pressure therewithin falls to a degree sufficiently below atmospheric pressure, and after evacuating the bin to a degree sufficiently below atmospheric pressure injecting pressurized gas through the inlet to said bin in almost the same quantity as the gas evacuated from the bin, the rate of injection of pressurized gas through said inlet being at least six times the rate of evacuation of gas from said bin during mixing of said material.
References Cited (Backward Citations)
CA732062A
Cited
US1839456A
Cited
GB451717A
Cited
US3276753A
Cited
US3671018A
Cited
US3887337A
Cited
US4042220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-09-24 | 1983-03-26 | 1983-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-24 | 1987-03-26 | 1987-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-24 | 1991-03-26 | 1991-09-25 | $7700.00 | Window Closed / Lapsed |