US3720595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for electrolytic polishing of rod-shaped workpieces
Assignee: Siemens AG
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Filing: 1970-06-09
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Granted: 1973-03-13
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Expires: 1990-06-09
Abstract
Abstract A tubular electrolyte container functions as a cathode and encloses a workpiece moving therethrough. The container has a cross-section corresponding to that of the workpiece. Each of a pair of seals is provided at a corresponding axial end of the container to seal the container from the workpiece and the outside. Electrolyte is continuously circulated in the container. Rollers outside the container move the workpiece through the container and supply electric current to the workpiece.
Inventors
- 👤 L Kohler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:28
CPC Classifications
C; C25; C25F; C25F7/00; C25F3/00; C25F3/16; C25F3/22; C25F3/26
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
144 words
Apparatus for electrolytic polishing of rod-shaped workpieces comprising zirconium alloys moving through said apparatus, said apparatus comprising a tubular electrolyte container functioning as a cathode and adapted to enclose a workpiece movable therethrough, said electrolyte container having a cross-section corresponding to that of the workpiece; a pair of seals, each at a corresponding Axial end of the tubular electrolyte container for sealing with respect to said container a workpiece passing therethrough, externally controllable pressure means for supplying pressurized gas to said seals to maintain the elasticity thereof and to seat said seals onto a workpiece passing therethrough, duct means opening into said electrolyte container for the continuous circulation of electrolyte in said container; and roller means outside said electrolyte container adapted to contact a workpiece electrically and physically for moving said workpiece through said electrolyte container and for supplying electric current to said workpiece.
Claim 2
Dependent Claim
144 words
Apparatus for electrolytic polishing of rod-shaped workpieces comprising zirconium alloys moving through said apparatus, said apparatus comprising a tubular electrolyte container functioning as a cathode and adapted to enclose a workpiece movable therethrough, said electrolyte container having a cross-section corresponding to that of the workpiece; a pair of seals, each at a corresponding Axial end of the tubular electrolyte container for sealing with respect to said container a workpiece passing therethrough, externally controllable pressure means for supplying pressurized gas to said seals to maintain the elasticity thereof and to seat said seals onto a workpiece passing therethrough, duct means opening into said electrolyte container for the continuous circulation of electrolyte in said container; and roller means outside said electrolyte container adapted to contact a workpiece electrically and physically for moving said workpiece through said electrolyte container and for supplying electric current to said workpiece.
Claim 3
Dependent Claim
44 words
Apparatus as claimed in claim 1, wherein said roller means comprises a pair of rollers at each axial end of said electrolyte container, one roller of each pair driving the workpiece and the other roller of each pair supplying electric current to said workpiece.
Claim 4
Dependent Claim
12 words
Apparatus as claimed in claim 1, wherein said seals comprise silicon rubber.
Claim 5
Dependent Claim
52 words
Apparatus as claimed in claim 1, further comprising a pair of water chambers each adjacent a corresponding one of said seals, and a cooling system opening into said water chambers for circulating cooling water through said water chambers thereby continuously cooling the moving workpiece as it enters and leaves said electrolyte container.
Claim 6
Dependent Claim
32 words
Apparatus as claimed in claim 1, further comprising electrolyte cooling means connected to said duct means and including cooling means and pump means for cooling and circulating electrolyte through said electrolyte container.
Claim 7
Dependent Claim
43 words
Apparatus as claimed in claim 1, wherein said electrolyte container has an inner wall having projections of substantially helical configuration thereby enlarging the interior surface of said electrolyte container and guiding the flow of the electrolyte around said workpiece in the electrolyte container.
Claim 8
Dependent Claim
13 words
Apparatus as claimed in claim 1, wherein said electrolyte container comprises stainless steel.
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) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |