Patent US3718540A successfully refreshed from Google Patents.
US3718540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic cells
Assignee: JOHN THOMPSON (PIPEWORK AND ORDNANCE DIVISION) Ltd
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Filing: 1970-03-19
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Granted: 1973-02-27
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Expires: 1990-03-19
Abstract
Abstract An electrolysis cell for purification of water containing dissolved chlorides by generation of chlorine or hypochlorite consists of coaxial tubular anode and cathode defining an annular flow passage for the continuous flow of the electrolyte and the inlet passages to the annular passage are arranged to produce a swirling motion of the electrolyte around the axis of the anode in order to prevent blocking of the narrow annular passage by deposits.
Inventors
- 👤 H Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:26
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F1/467; C02F1/4672; C02F1/4674; C02F1/46104; C02F1/46109; C02F2001/46152; C02F2103/00; C02F2103/42; C02F2201/00; C02F2201/46; C02F2201/461; C02F2201/46105; C02F2201/4611; C02F2201/4612; C02F2201/46145; C02F2209/00; C02F2209/02; C02F2301/00; C02F2301/02; C02F2301/024; C02F2301/026
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
37 words
An electrolysis cell as claimed in claim 1 in which the cathode is composed of a metal which has a rectifying action in contact with the electrolyte whereby an alternating voltage may be applied to the cell.
Claim 2
Dependent Claim
16 words
An electrolysis cell as claimed in claim 1 in which the anode is a tubular member.
Claim 3
Dependent Claim
30 words
An electrolysis cell as claimed in claim 1 in which each inlet passage is inclined to and offset from the axis of the anode whereby to produce said swirling action.
Claim 4
Dependent Claim
23 words
An electrolysis cell as claimed in claim 4 in which each inlet passage is inclined at 90* to the axis of the anode.
Claim 5
Dependent Claim
16 words
An electrolysis cell as claimed in claim 1 in which the anode is of platinum-rhodium alloy.
Claim 6
Dependent Claim
15 words
An electrolysis cell as claimed in claim 6 in which the cathode is of titanium.
Claim 7
Dependent Claim
32 words
An electrolysis cell as claimed in claim 1 in which the inlet passage is disposed in a plane perpendicular to the axis of the anode and is offset from the said axis.
Claim 8
Dependent Claim
48 words
An electrolysis cell as claimed in claim 8 having a hollow member supporting one end of the cathode, one end of the anode being supported with a chamber formed by the said hollow member, and the inlet passage extending into the said chamber through a side wall thereof.
Claim 9
Dependent Claim
33 words
An electrolysis cell as claimed in claim 9 having an electrically-insulating sheath surrounding a part of the axial length of the anode and means for adjusting the anode axially relative to the sheath.
Claim 10
Dependent Claim
26 words
An electrolysis cell as claimed in claim 1 in which said support block has a plurality of inlet passages inclined to the axis of the anode.
Claim 11
Dependent Claim
33 words
An electrolysis cell as claimed in claim 11 having an electrically conducting cylinder block fitting within said tubular anode, the said one end of the electrically conducting rod being coupled to said cylinder.
Claim 12
Dependent Claim
62 words
An electrolysis cell as claimed in claim 12 having a tubular inlet member attached to one end of the cathode, the support block fitting within the tubular inlet member, and an electrically conducting pin passing through the inlet member and the support block to secure the support block in the inlet member and engaging the said rod to form an anode terminal.
Claim 13
Dependent Claim
32 words
An electrolysis cell as claimed in claim 12 having an electrically insulating plug disposed within the end of the tubular anode remote from the spigot and coupled to the electrically conducting cylinder.
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) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |