US4284491A
Expired / Lapsed
US
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Apparatus for electrophoresis
Assignee: C Desaga Nachf Erich Fecht GmbH
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Filing: 1979-11-13
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Granted: 1981-08-18
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Expires: 1999-11-13
Abstract
Abstract An electrophoresis device includes first and second electrode vessels for containing buffer solution and adapted to be connected to poles of a direct current source. A plurality of vertical channels containing carrier medium have opposite ends opening into the first and second electrode vessels. At least one of the electrode vessels has a cavity into which commonly open adjacent ends of the channels. A sealing piece is operable to seal in an airtight manner the cavity and thereby the ends of the channels from the interior of the electrode vessel. A connection extends through the sealing piece to the cavity to connect the cavity and the interiors of the channels to a source of overpressure or underpressure.
Inventors
- 👤 Olof Vesterberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:15
CPC Classifications
C; C25; C25B; C25B7/00; B; B01; B01D; B01D57/00; B01D57/02; C25B9/00; G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/447; G01N27/44756; G01N27/44782
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
115 words
A device for conducting electrophoresis for the quantitative determination and/or preparation of chemical substances, said device comprising: first and second electrode vessel means for containing buffer solution and adapted to be connected to poles of a direct current source; a plurality of substantially vertical channel means for containing carrier medium and having opposite ends opening into said first and second electrode vessel means, first ends of said channel means commonly opening into a cavity; means for sealing, in an airtight manner, said cavity and thereby said first ends of said channel means from the interior of the respective said electrode vessel means; and means for connecting said cavity to a source of overpressure or underpressure.
Claim 2
Independent Claim
115 words
A device for conducting electrophoresis for the quantitative determination and/or preparation of chemical substances, said device comprising: first and second electrode vessel means for containing buffer solution and adapted to be connected to poles of a direct current source; a plurality of substantially vertical channel means for containing carrier medium and having opposite ends opening into said first and second electrode vessel means, first ends of said channel means commonly opening into a cavity; means for sealing, in an airtight manner, said cavity and thereby said first ends of said channel means from the interior of the respective said electrode vessel means; and means for connecting said cavity to a source of overpressure or underpressure.
Claim 3
Dependent Claim
55 words
A device as claimed in claim 1, wherein said channel means comprise a plurality of jointly held and supported tubes, said cavity is formed in a horizontal partition of said respective electrode vessel means, and further comprising sealing strip means for holding said tubes in said cavity and for defining a boundary of said cavity.
Claim 4
Dependent Claim
49 words
A device as claimed in claim 2, wherein said first electrode vessel means is positioned within said second electrode vessel means, said cavity comprises a slot formed in a wall forming the bottom of said first electrode vessel means, and upper ends of said tubes open into said slot.
Claim 5
Dependent Claim
57 words
A device as claimed in claim 3, further comprising a cooling chamber positioned between said first and second electrode vessel means, said cooling chamber having a bottom formed by a partition having therein a second slot forming a second cavity, lower ends of said tubes opening into said second cavity, said tubes extending through said cooling chamber.
Claim 6
Dependent Claim
25 words
A device as claimed in claim 4, further comprising second sealing strip means for holding said lower ends of said tubes in said second cavity.
Claim 7
Dependent Claim
15 words
A device as claimed in claim 5, wherein said sealing strip means comprise elastic material.
Claim 8
Dependent Claim
26 words
A device as claimed in claim 5, wherein said sealing strip means narrow conically in directions toward the openings in the respective ends of said tubes.
Claim 9
Dependent Claim
52 words
A device as claimed in claim 4, wherein said first electrode vessel means and said cooling chamber are formed as a single unit resting on supports positioned in said second electrode vessel means between a partition forming the bottom of said cooling chamber and the bottom of said second electrode vessel means.
Claim 10
Dependent Claim
21 words
A device as claimed in claim 4, wherein said cooling chamber has therein a cooling fluid having a low electrical conductivity.
Claim 11
Dependent Claim
23 words
A device as claimed in claim 2, further comprising film means for selectively covering openings of said tubes adjacent said sealing strip means.
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) | 1984-08-17 | 1985-02-16 | 1985-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-17 | 1989-02-16 | 1989-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-17 | 1993-02-16 | 1993-08-18 | $7700.00 | Window Closed / Lapsed |