Patent US3669869A successfully refreshed from Google Patents.
US3669869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic cells
Assignee: A Johnson and Co London Ltd
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Filing: 1969-10-01
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Granted: 1972-06-13
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Expires: 1989-10-01
Abstract
Abstract An electrolytic cell with spaced-apart electrodes in a row so constructed that the inter-electrode spaces are in series so that the electrolyte flows through them in succession. Preferably the electrodes are at least 1 centimeter thick and the interelectrode spaces communicate with one another only by way of holes through the electrodes. The electrodes may be wedgeshaped.
Inventors
- 👤 Derek Arthur Burton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:35
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/02; C25B11/036; C25B9/00; C25B9/70; C25B9/73; C25B9/75
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
163 words
A bipolar electrolytic cell comprising a housing the interior of which is closed off from the atmosphere, a vertical row of spaced-apart electrodes in the housing which comprise upper and lower electrodes and between them at least one bipolar intermediate electrode which has an anode and a cathode integral with one another and a lower face inclined to the horizontal, the lower face of the upper electrode also being inclined to the horizontal, an inlet into the housing at the bottom of the housing for the supply of electrolyte liquid, an outlet from the housing at the top of the housing for the discharge of treated liquid and means including sealing devices engaging the electrodes for causing liquid to flow in an always ascending path from the inlet to the outlet in which it passes in succession through all the spaces between the electrodes in the row, in each case across the faces of the two electrodes on opposite sides of the space.
Claim 2
Dependent Claim
163 words
A bipolar electrolytic cell comprising a housing the interior of which is closed off from the atmosphere, a vertical row of spaced-apart electrodes in the housing which comprise upper and lower electrodes and between them at least one bipolar intermediate electrode which has an anode and a cathode integral with one another and a lower face inclined to the horizontal, the lower face of the upper electrode also being inclined to the horizontal, an inlet into the housing at the bottom of the housing for the supply of electrolyte liquid, an outlet from the housing at the top of the housing for the discharge of treated liquid and means including sealing devices engaging the electrodes for causing liquid to flow in an always ascending path from the inlet to the outlet in which it passes in succession through all the spaces between the electrodes in the row, in each case across the faces of the two electrodes on opposite sides of the space.
Claim 3
Dependent Claim
47 words
A cell according to claim 1 wherein the electrodes are at least 1 centimeter thick and said means comprises portions of some of the electrodes defining holes through those electrodes, and seals around the edges of the electrodes between them and the inside surface of the housing.
Claim 4
Dependent Claim
35 words
A cell according to claim 1 in which the housing comprises sections equal in number to the electrodes, each electrode being encircled by its own housing section, and seals for preventing leakage between adjacent sections.
Claim 5
Dependent Claim
24 words
A cell according to claim 1 in which each intermediate electrode has its upper and lower faces inclined in opposite senses to the horizontal.
Claim 6
Dependent Claim
165 words
A cell according to claim 1 in which said upper electrode is a bipolar electrode which has an anode and a cathode integral with one another (and is also a lower electrode in a second vertical row of spaced-apart electrodes, which row comprises an upper electrode having its lower face inclined to the horizontal and at least one bipolar intermediate electrode which has an anode and a cathode integral with one another and a lower face inclined to the horizontal, means for causing liquid to flow in a second always ascending path on its way from the inlet to the outlet in which it passes in succession through all the spaces between the electrodes in the second row, in each case across the faces of the two electrodes on opposite sides of the space, and means for dividing the stream of liquid to be treated into two streams of which one follows one of said paths and the other follows the other of said paths.
Claim 7
Dependent Claim
92 words
A cell according to claim 5 in which the two rows of electrodes lie in a straight line and the housing is tubular, the cell further comprising a second tubular housing surrounding and spaced from the first tubular housing, partitions extending along the housings and dividing the space between them into two chambers and portions of the inner housing defining two openings from one chamber into the first inter-electrode spaces in the rows of electrodes and two openings from the last inter-electrode spaces in the rows of electrodes into the other chamber.
Claim 8
Dependent Claim
24 words
A cell according to claim 5 in which each bipolar electrode has its upper and lower faces inclined in opposite senses to the horizontal.
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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |