US4310253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stirring method
Assignee: Toyo Engineering Corp
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Filing: 1980-03-24
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Granted: 1982-01-12
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Expires: 2000-03-24
Abstract
Abstract A stirring method comprising placing particles of a magnetic material or particles of a magnetic material coated or covered with a non-magnetic material in an interface between two phases or in a specific layer, and subjecting said particles to influences of a rotating magnetic field to cause rotation and revolution in the particles. According to this method, transfer of substances and/or heat in the interface between the two phases or in the specific layer is promoted. Also disclosed is a stir method comprising placing particles of a magnetic material or particles of a magnetic material coated or covered with a non-magnetic material in a fluid under influences of a rotating magnetic field, to cause rotation and revolution in the particles in the fluid. According to this method, transfer of substances and/or heat in the interface between a phase of the particles and a phase of the fluid is promoted.
Inventors
- 👤 Eizo Sada
- 👤 Shigeo Katoh
- 👤 Ryozo Toei
- 👤 Hideyuki Michiki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:10
CPC Classifications
B; B01; B01F; B01F33/00; B01F33/45; B01F33/451
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
128 words
Method for magnetically and selectively stirring substances in a vessel containing them, which comprises: (a) placing a predetermined quantity of comminuted magnetic material at a preselected location in said vessel, said magnetic material being covered with a non-magnetic material so as to possess a predetermined specific gravity; (b) placing in said vessel and above said comminuted magnetic material movable means for rotating said magnetic material under the influence of a variable rotating magnetic field generated by said movable means; (c) adjusting said rotating magnetic field to a predetermined rotational speed and said movable means to a predetermined distance from said magnetic material; and (d) causing said movable means to stir said substances selectively in said vessel, thereby obtaining a transfer of the thus stirred substances in said vessel.
Claim 2
Dependent Claim
128 words
Method for magnetically and selectively stirring substances in a vessel containing them, which comprises: (a) placing a predetermined quantity of comminuted magnetic material at a preselected location in said vessel, said magnetic material being covered with a non-magnetic material so as to possess a predetermined specific gravity; (b) placing in said vessel and above said comminuted magnetic material movable means for rotating said magnetic material under the influence of a variable rotating magnetic field generated by said movable means; (c) adjusting said rotating magnetic field to a predetermined rotational speed and said movable means to a predetermined distance from said magnetic material; and (d) causing said movable means to stir said substances selectively in said vessel, thereby obtaining a transfer of the thus stirred substances in said vessel.
Claim 3
Dependent Claim
64 words
The method according to claim 1, further comprising: (a) placing in said vessel and below said comminuted magnetic material mechanically-actuated stirring means for additionally stirring said substances in said vessel, whereby said substances are selectively stirred by the combined stirring action of said movable means and said mechanically-actuated stirring means for the obtainment of a transfer of the thus stirred substances in said vessel.
Claim 4
Independent Claim
26 words
The method according to claims 1 or 2, wherein said comminuted magnetic material consists of particles of magnetic material individually or plurally coated by non-magnetic material.
Claim 5
Dependent Claim
30 words
The method according to claim 1 or 2, wherein one or more specific non-magnetic materials are combined with said magnetic material, the resulting combination being covered by said non-magnetic material.
Claim 6
Dependent Claim
16 words
The method according to claim 4, wherein said non-magnetic material consist of said specific non-magnetic material.
Claim 7
Dependent Claim
50 words
The method according to claim 5 or 2, wherein said preselected location is selected from the group consisting of the interface between two fluids in a multi-phase system, the interface between two liquids in a multi-liquid system, one liquid in a multi-liquid system and one phase in a multi-phase system.
Claim 8
Dependent Claim
25 words
The method according to claim 6, wherein said multi-phase system is selected from the group consisting of gas-liquid systems, liquid-solid systems and gas-liquid-solid ternary systems.
Claim 9
Dependent Claim
33 words
The method according to claim 1 or 2, wherein said magnetic material consists of comminuted iron oxide covered with a non-magnetic material selected from the group consisting of paraffin, plastic material, and glass.
Claim 10
Dependent Claim
36 words
The method according to claim 1 or 2, wherein said movable means for rotating said magnetic material is selected from a rotating magnet or a permanent magnet or an electromagnet or a three-phase alternating electric current.
References Cited (Backward Citations)
US3219318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-01-11 | 1985-07-13 | 1986-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-11 | 1989-07-13 | 1990-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-11 | 1993-07-13 | 1994-01-12 | $7700.00 | Window Closed / Lapsed |