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US3677071A
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Method and apparatus for determining the coefficient of diffusion of a dissolved solute in unsaturated solution
Assignee: Individual
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Filing: 1970-11-12
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Granted: 1972-07-18
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Expires: 1990-11-12
Abstract
Abstract Unsaturated dissolved solute remains in solution by means of diffusion forces. These forces can be determined by centrifugation, by measuring the concentration of the dissolved solute in one part of the solution, and noting the minimum amount of centrifugal force which causes a concentration change. Concentration measurement can be made by any convenient method and, where different concentrations result in different electrical conductivity, resistance measurements are convenient.
Inventors
- 👤 Arthur Seymon Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:58
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/04; G01N15/042
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
98 words
The method for determining the coefficient of diffusion of a solute in an unsaturated solvent comprising the steps of: applying a first force of determined amount for a first length of time to an unsaturated solution; and thereafter determining the concentration of the solute in the solvent toward one end of the solution in the directioN of applied force; and repeating these steps successively with lesser amounts of force for substantially the same length of time until no further change in concentration of solutes in one end of the solution occurs as a result applying of the force.
Claim 2
Independent Claim
98 words
The method for determining the coefficient of diffusion of a solute in an unsaturated solvent comprising the steps of: applying a first force of determined amount for a first length of time to an unsaturated solution; and thereafter determining the concentration of the solute in the solvent toward one end of the solution in the directioN of applied force; and repeating these steps successively with lesser amounts of force for substantially the same length of time until no further change in concentration of solutes in one end of the solution occurs as a result applying of the force.
Claim 3
Dependent Claim
19 words
The process of claim 1 where the force is applied at the time a solute concentration determination is made.
Claim 4
Independent Claim
206 words
An apparatus for the determination of the coefficient of diffusion of a solute in an unsaturated solvent comprising: a centrifugal rotor mounted for rotation about an axis, chamber means on said centrifugal rotor; drive means for rotating said centrifugal rotor for driving said chamber means for applying an accelerational force to said chamber means in addition to the force of gravity, said drive means being adjustable so that the amount of force applied through the unsaturated solution in the chamber means can be preselected; measuring means comprising at least one electrode positioned within said chamber means for measuring the concentration of solute in the unsaturated solution toward one end of the chamber means generally along the direction of the applied force, said electrode being connected to a solute concentration-determining instrument, said rotor carrying at least one slip ring thereon and said at least one electrode is connected to said slip ring, a brush in engagement with said slip ring, said solute concentration determining instrument being connected to said brush so that said solute concentration determining instrument is substantially stationary while said rotor rotates so that concentration measurement can be made to determine the concentration of solute in the unsaturated solution during the application of force thereto.
Claim 5
Independent Claim
206 words
An apparatus for the determination of the coefficient of diffusion of a solute in an unsaturated solvent comprising: a centrifugal rotor mounted for rotation about an axis, chamber means on said centrifugal rotor; drive means for rotating said centrifugal rotor for driving said chamber means for applying an accelerational force to said chamber means in addition to the force of gravity, said drive means being adjustable so that the amount of force applied through the unsaturated solution in the chamber means can be preselected; measuring means comprising at least one electrode positioned within said chamber means for measuring the concentration of solute in the unsaturated solution toward one end of the chamber means generally along the direction of the applied force, said electrode being connected to a solute concentration-determining instrument, said rotor carrying at least one slip ring thereon and said at least one electrode is connected to said slip ring, a brush in engagement with said slip ring, said solute concentration determining instrument being connected to said brush so that said solute concentration determining instrument is substantially stationary while said rotor rotates so that concentration measurement can be made to determine the concentration of solute in the unsaturated solution during the application of force thereto.
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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |