Patent US4543172A successfully refreshed from Google Patents.
US4543172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed plating apparatus
Assignee: Individual
•
Filing: 1982-03-03
•
Granted: 1985-09-24
•
Expires: 2002-03-03
Abstract
Abstract High speed plating apparatus in which a cylindrical electrode structure has fitted into it a metal tube. The metal tube has a higher melting point than the electrode, is corrosion resistant to plating liquid and protects the inner surface of the electrode.
Inventors
- 👤 Toshiyuki Suzuki
- 👤 Hiroshi Tsukakoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:44
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
91 words
In a high speed plating apparatus having a plating chamber equipped with electrodes the improvement comprising: one of said electrodes being cylindrical to form a cylindrical plating chamber; a metal tube fitted into said cylindrical electrode between the inner surface of said cylindrical electrode and said plating chamber formed thereby; said metal tube being comprised of an alloy of platinum having a higher melting point than said electrode and being corrosion resistant to a plating liquid whereby said metal tube covers and protects the inner circumferential surface of said one electrode.
Claim 2
Dependent Claim
91 words
In a high speed plating apparatus having a plating chamber equipped with electrodes the improvement comprising: one of said electrodes being cylindrical to form a cylindrical plating chamber; a metal tube fitted into said cylindrical electrode between the inner surface of said cylindrical electrode and said plating chamber formed thereby; said metal tube being comprised of an alloy of platinum having a higher melting point than said electrode and being corrosion resistant to a plating liquid whereby said metal tube covers and protects the inner circumferential surface of said one electrode.
Claim 3
Dependent Claim
26 words
The apparatus according to claim 1 in which the ends of said one electrode is covered with plates of the same material as said metal tube.
Claim 4
Dependent Claim
17 words
The apparatus according to claim 2 in which said metal plates are joined to said metal tube.
Claim 5
Dependent Claim
21 words
The apparatus according to claim 1 including a protecting cylindrical tubular member interposed between said one electrode and said metal tube.
Claim 6
Dependent Claim
16 words
The apparatus according to claim 4 in which said protecting cylinder has integrally formed end plates.
Claim 7
Dependent Claim
17 words
The apparatus according to claim 5 in which said protection cylinder is comprised of a refractory steel.
Claim 8
Dependent Claim
17 words
The apparatus according to claim 4 in which said protecting cylinder is comprised of a refractory steel.
References Cited (Backward Citations)
GB276921A
Cited
US1953955A
Cited
US2689215A
Cited
US2764540A
Cited
US2859157A
Cited
US3743590A
Cited
US3841990A
Cited
US4171255A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-23 | 1989-03-25 | 1989-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-23 | 1993-03-25 | 1993-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-23 | 1997-03-25 | 1997-09-24 | $7700.00 | Window Closed / Lapsed |