US4140616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic cells
Assignee: Plenty Ltd
•
Filing: 1977-09-12
•
Granted: 1979-02-20
•
Expires: 1997-09-12
Abstract
Abstract There is disclosed a bipolar electrolytic cell comprising a row of spaced-apart electrodes which include at least one bipolar intermediate electrode. There are an inlet for the supply of electrolyte liquid and an outlet for the discharge of treated liquid, the cell being such that liquid can flow from the inlet to the outlet via a path 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. There is a coating of electrically insulating material on that external surface of each of the electrodes which is on the outside of the row, the insulating material for example being a plastics material such as nylon.
Inventors
- 👤 Stuart M. Wheatley
- 👤 Geoffrey R. Sherfield
- 👤 Derek A. Burton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:28
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/02; C25B11/036; C25B9/00; C25B9/07; C25B9/13; C25B9/15
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
109 words
A bipolar electrolytic cell including a row of spaced-apart electrodes which include a bipolar intermediate electrode, an inlet for the supply of electrolyte liquid and an outlet for the discharge of treated liquid, the cell being such that liquid can flow from the inlet to the outlet via a path 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, the cell further including a coating of electrically insulating material on that external surface of each of the electrodes which is on the outside of the row.
Claim 2
Dependent Claim
109 words
A bipolar electrolytic cell including a row of spaced-apart electrodes which include a bipolar intermediate electrode, an inlet for the supply of electrolyte liquid and an outlet for the discharge of treated liquid, the cell being such that liquid can flow from the inlet to the outlet via a path 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, the cell further including a coating of electrically insulating material on that external surface of each of the electrodes which is on the outside of the row.
Claim 3
Dependent Claim
45 words
A cell according to claim 1, wherein the spaces between the electrodes are interconnected only by holes through the electrodes, there being seals provided around the edges of the electrodes and in between successive electrodes, the seals being the only means spacing apart the electrodes.
Claim 4
Dependent Claim
13 words
A cell according to claim 2, wherein the seals are non-circular in cross-section.
Claim 5
Dependent Claim
25 words
A cell according to claim 2, wherein each of the seals is at least partially received in a respective groove in one of the electrodes.
Claim 6
Dependent Claim
25 words
A cell according to claim 3, wherein each of the seals is at least partially received in a respective groove in one of the electrodes.
Claim 7
Dependent Claim
18 words
A cell according to claim 1, wherein the bipolar intermediate electrode has an anode integral with a cathode.
Claim 8
Dependent Claim
18 words
A cell according to claim 2, wherein the bipolar intermediate electrode has an anode integral with a cathode.
Claim 9
Dependent Claim
18 words
A cell according to claim 3, wherein the bipolar intermediate electrode has an anode integral with a cathode.
Claim 10
Dependent Claim
30 words
A cell according to claim 6, wherein the electrically conductive material used for the bipolar intermediate electrode is a mixture of an electrically conductive substance with an electrically insulating substance.
Claim 11
Dependent Claim
30 words
A cell according to claim 7, wherein the electrically conductive material used for the bipolar intermediate electrode is a mixture of an electrically conductive substance with an electrically insulating substance.
Claim 12
Dependent Claim
30 words
A cell according to claim 8, wherein the electrically conductive material used for the bipolar intermediate electrode is a mixture of an electrically conductive substance with an electrically insulating substance.
Claim 13
Dependent Claim
19 words
A cell according to claim 9, wherein the electrically conductive material is plastics material reinforced throughout with carbon fibers.
Claim 14
Dependent Claim
19 words
A cell according to claim 10, wherein the electrically conductive material is plastics material reinforced throughout with carbon fibers.
Claim 15
Dependent Claim
19 words
A cell according to claim 11, wherein the electrically conductive material is plastics material reinforced throughout with carbon fibers.
Claim 16
Dependent Claim
45 words
A cell according to claim 9, wherein the electrically conductive material used for the bipolar intermediate electrode is graphite with a cladding which protects the graphite from the electrolyte and is more resistant than it to chemical action which occurs in use of the cell.
Claim 17
Dependent Claim
45 words
A cell according to claim 10, wherein the electrically conductive material used for the bipolar intermediate electrode is graphite with a cladding which protects the graphite from the electrolyte and is more resistant than it to chemical action which occurs in use of the cell.
Claim 18
Dependent Claim
45 words
A cell according to claim 11, wherein the electrically conductive material used for the bipolar intermediate electrode is graphite with a cladding which protects the graphite from the electrolyte and is more resistant than it to chemical action which occurs in use of the cell.
Claim 19
Dependent Claim
45 words
A cell according to claim 9, wherein the electrically conductive material used for the bipolar intermediate electrode is metal with a cladding which protects the metal from the electrolyte and is more resistant than it to chemical action which occurs in use of the cell.
Claim 20
Dependent Claim
45 words
A cell according to claim 10, wherein the electrically conductive material used for the bipolar intermediate electrode is metal with a cladding which protects the metal from the electrolyte and is more resistant than it to chemical action which occurs in use of the cell.
Claim 21
Dependent Claim
45 words
A cell according to claim 11, wherein the electrically conductive material used for the bipolar intermediate electrode is metal with a cladding which protects the metal from the electrolyte and is more resistant than it to chemical action which occurs in use of the cell.
Claim 22
Dependent Claim
13 words
A cell according to claim 1, wherein the row is a vertical one.
Claim 23
Dependent Claim
13 words
A cell according to claim 2, wherein the row is a vertical one.
Claim 24
Dependent Claim
13 words
A cell according to claim 3, wherein the row is a vertical one.
Claim 25
Dependent Claim
26 words
A cell according to claim 21, wherein the inlet is at the bottom of the cell and the outlet is at the top of the cell.
Claim 26
Dependent Claim
26 words
A cell according to claim 22, wherein the inlet is at the bottom of the cell and the outlet is at the top of the cell.
Claim 27
Dependent Claim
26 words
A cell according to claim 23, wherein the inlet is at the bottom of the cell and the outlet is at the top of the cell.
Claim 28
Dependent Claim
42 words
A cell according to claim 24, wherein the cell is such that the said path is a path which is never descending, the lower face of the intermediate electrode and the lower face of the upper electrode being inclined to the horizontal.
Claim 29
Dependent Claim
42 words
A cell according to claim 25, wherein the cell is such that the said path is a path which is never descending, the lower face of the intermediate electrode and the lower face of the upper electrode being inclined to the horizontal.
Claim 30
Dependent Claim
42 words
A cell according to claim 26, wherein the cell is such that the said path is a path which is never descending, the lower face of the intermediate electrode and the lower face of the upper electrode being inclined to the horizontal.
Claim 31
Dependent Claim
24 words
A cell according to claim 27, wherein the upper and lower faces of the intermediate electrode are inclined in opposite senses to the horizontal.
Claim 32
Dependent Claim
24 words
A cell according to claim 28, wherein the upper and lower faces of the intermediate electrode are inclined in opposite senses to the horizontal.
Claim 33
Dependent Claim
24 words
A cell according to claim 29, wherein the upper and lower faces of the intermediate electrode are inclined in opposite senses to the horizontal.
Claim 34
Dependent Claim
19 words
A cell according to claim 27, wherein the upper face of the lower electrode is inclined to the horizontal.
Claim 35
Dependent Claim
19 words
A cell according to claim 28, wherein the upper face of the lower electrode is inclined to the horizontal.
Claim 36
Dependent Claim
19 words
A cell according to claim 29, wherein the upper face of the lower electrode is inclined to the horizontal.
Claim 37
Dependent Claim
34 words
A cell according to claim 1, wherein the coating of electrically insulating material on that external surface of each of the electrodes which is on the outside of the row, is a plastics material.
Claim 38
Dependent Claim
34 words
A cell according to claim 2, wherein the coating of electrically insulating material on that external surface of each of the electrodes which is on the outside of the row, is a plastics material.
Claim 39
Dependent Claim
34 words
A cell according to claim 3, wherein the coating of electrically insulating material on that external surface of each of the electrodes, which is on the outside of the row, is a plastics material.
Claim 40
Dependent Claim
12 words
A cell according to claim 36, wherein the plastics material is nylon.
Claim 41
Dependent Claim
12 words
A cell according to claim 37, wherein the plastics material is nylon.
Claim 42
Dependent Claim
12 words
A cell according to claim 38, wherein the plastics material is nylon.
Claim 43
Dependent Claim
16 words
A cell according to claim 1, wherein there is a plurality of such bipolar intermediate electrodes.
Claim 44
Dependent Claim
16 words
A cell according to claim 2, wherein there is a plurality of such bipolar intermediate electrodes.
Claim 45
Dependent Claim
16 words
A cell according to claim 3, wherein there is a plurality of such bipolar intermediate electrodes.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-19 | 1982-08-21 | 1983-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-19 | 1986-08-21 | 1987-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-19 | 1990-08-21 | 1991-02-20 | $7700.00 | Window Closed / Lapsed |