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US4409086A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrolytic cell

Assignee: GEA Group AG
•
Filing: 1981-03-26
•
Granted: 1983-10-11
•
Expires: 2001-03-26
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Abstract

Abstract In electrolytic apparatus comprising cell chambers through which is passed an electrolyte and in which sets of anode plates are provided, each of which are connected to current-feeding center pins, and the mutually staggered electrode plates protrude into the gaps between plates having the opposite polarity. To ensure a simple, quick and reliable installation and removal of the anode plates, the center pin is provided with contact straps, which are spaced apart in the longitudinal direction of the pin and serve to secure the anode plate. The contact straps are suitably spaced about 180° apart and have at least one opening, which consists preferably of a tapped bore. The electrolytic apparatus is used in processes of producing alkali chlorate by the electrolytic decomposition of aqueous alkali chloride solutions.

Inventors

  • 👤 Gunther Haas
  • 👤 Ludolf Plass
  • 👤 Karl Lohrberg

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 23:53
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/60; C25B9/63; C25B9/65

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 98 words
In an electrolytic apparatus comprising a cell chamber and means for passing an electrolyte therethrough, said cell provided with sets of anode plates, each of which is disposed between two sets of cathode plates and each of which is connected to a current-feeding center pin, said anode plates being mutually staggered electrode plates which protrude into the gaps between plates having the opposite polarity, the improvement wherein said center pin is provided with laterally disposed contact straps, which are spaced apart in the longitudinal direction of the pin, each of said straps having an anode plate secured thereto.
Claim 2
Dependent Claim 98 words
In an electrolytic apparatus comprising a cell chamber and means for passing an electrolyte therethrough, said cell provided with sets of anode plates, each of which is disposed between two sets of cathode plates and each of which is connected to a current-feeding center pin, said anode plates being mutually staggered electrode plates which protrude into the gaps between plates having the opposite polarity, the improvement wherein said center pin is provided with laterally disposed contact straps, which are spaced apart in the longitudinal direction of the pin, each of said straps having an anode plate secured thereto.
Claim 3
Dependent Claim 15 words
Electrolytic apparatus according to claim 1, wherein the contact straps are spaced about 180° apart.
Claim 4
Dependent Claim 16 words
Electrolytic apparatus according to claim 1, wherein each contact strap has at least one opening bore.
Claim 5
Dependent Claim 13 words
Electrolytic apparatus according to claim 3, wherein said opening comprises a tapped bore.
Claim 6
Dependent Claim 26 words
Electrolytic apparatus according to claim 1, wherein said center pin comprises a core of copper having a high electrical conductivity and a shrunk-on sheath of titanium.
Claim 7
Dependent Claim 13 words
Electrolytic apparatus according to claim 1, wherein the contact straps comprise platinized titanium.
Claim 8
Dependent Claim 12 words
An electrolytic apparatus according to claim 1 wherein said anode comprises titanium.
Claim 9
Dependent Claim 12 words
An electrolytic apparatus according to claim 1 wherein said cathode comprises steel.

References Cited (Backward Citations)

US3192142A Cited
US3728245A Cited
US3984304A Cited
US4134805A Cited
US4325798A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1986-10-10 1987-04-11 1987-10-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1990-10-10 1991-04-11 1991-10-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1994-10-10 1995-04-11 1995-10-11 $7700.00 Window Closed / Lapsed

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