US4670003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal apparatus and method
Assignee: SHERWOOD & VIVIAN JUDSON
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Filing: 1985-10-29
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Granted: 1987-06-02
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Expires: 2005-10-29
Abstract
Abstract The invention relates to a method and apparatus for investigating samples of materials subjected to high centrifugal forces, generally in excess of 5×10 5 g. The sample is encapsulated in a closed microvessel that serves as a magnetic or magnetizable rotor. The centrifuge provides a rotating magnetic field that drives the microvessel to very high speed, thus subjecting the sample to centrifugation. An optical system coupled with the driving system allows for viewing the sample during rotation.
Inventors
- 👤 Pavel E. Moroz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:52
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/01; G01N21/03; G01N21/07; B; B04; B04B; B04B9/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
83 words
A method of subjecting a sample of one or more materials to high speed centrifugation, comprising the steps of: (a) placing a sample in a first section of a two sectioned hollow microvessel, at least one section of which is magnetic or magnetizable; (b) encapsulating said sample in said hollow microvessel by placement of a second section of said microvessel in engaging contact with said first section; and (c) centrifically rotating said encapsulated sample by subjecting said microvessel to a rotating magnetic field.
Claim 2
Independent Claim
83 words
A method of subjecting a sample of one or more materials to high speed centrifugation, comprising the steps of: (a) placing a sample in a first section of a two sectioned hollow microvessel, at least one section of which is magnetic or magnetizable; (b) encapsulating said sample in said hollow microvessel by placement of a second section of said microvessel in engaging contact with said first section; and (c) centrifically rotating said encapsulated sample by subjecting said microvessel to a rotating magnetic field.
Claim 3
Dependent Claim
24 words
The method of claim 1, wherein one of said sections is substantially transparent, and further comprising the step of viewing said sample during rotation.
Claim 4
Dependent Claim
23 words
The method of claim 1, wherein said microvessel and sample are caused to rotate at centrifugal forces in excess of 5×10 5 g.
Claim 5
Dependent Claim
18 words
The method of claim 1, further comprising the step of subjecting the sample to external energy during rotation.
Claim 6
Dependent Claim
12 words
The method of claim 4, wherein said external energy comprises light energy.
Claim 7
Dependent Claim
17 words
The method of claim 1, further comprising the step of measuring emissions from said sample during rotation.
Claim 8
Dependent Claim
21 words
The method of claim 1, further comprising the step of energizing said rotative magnetic field by means of a modulated current.
Claim 9
Dependent Claim
15 words
The method of claim 1, further comprising the step of freezing the sample during rotation.
Claim 10
Dependent Claim
16 words
The method of claim 1, wherein said rotation is conducted in a field of reduced gravity.
Claim 11
Independent Claim
69 words
A method of subjecting a sample of one or more materials to high speed centrifugation, comprising the steps of: (a) rotating a sample at forces generally in excess of 5×10 5 g in a closed microvessel, at least a portion of which is transparent and at least a portion of which is magnetic or magnetizable; and (b) viewing said sample through the transparent portion of the microvessel during rotation.
Claim 12
Independent Claim
69 words
A method of subjecting a sample of one or more materials to high speed centrifugation, comprising the steps of: (a) rotating a sample at forces generally in excess of 5×10 5 g in a closed microvessel, at least a portion of which is transparent and at least a portion of which is magnetic or magnetizable; and (b) viewing said sample through the transparent portion of the microvessel during rotation.
Claim 13
Dependent Claim
18 words
The method of claim 10, further comprising the step of subjecting the sample to external energy during rotation.
Claim 14
Dependent Claim
12 words
The method of claim 11, wherein said external energy comprises light energy.
Claim 15
Dependent Claim
17 words
The method of claim 10, further comprising the step of measuring emissions from said sample during rotation.
Claim 16
Dependent Claim
21 words
The method of claim 10, further comprising the step of energizing said rotative magnetic field by means of a modulated current.
Claim 17
Dependent Claim
15 words
The method of claim 10, further comprising the step of freezing the sample during rotation.
Claim 18
Dependent Claim
19 words
The method of claim 10, wherein said rotation is conducted in a magnetic field produced by superconducting magnetic coils.
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) | 1990-06-01 | 1990-12-01 | 1991-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-01 | 1994-12-01 | 1995-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-01 | 1998-12-01 | 1999-06-02 | $7700.00 | Window Closed / Lapsed |