US2721839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plating apparatus for electrical rectifiers
Assignee: Westinghouse Air Brake Co
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Filing: 1951-10-17
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Granted: 1955-10-25
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Expires: 1971-10-17
Abstract
No abstract record available.
Inventors
- 👤 Herbert L Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:14
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/02; C25D5/022; C25D17/00; C25D17/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
A FIXTURE FOR HOLDING PLATES IN AN ELECTROLYTIC BATH COMPRISING A MASK OF RESILIENT, SAID MASK BEING PROVIDED WITH A PLURALITY OF OPENINGS, AN ANNULAR SHOULDER IN EACH OF SAID OPENINGS FOR SEATING A PLATE DISPOSED IN THE MASK OPENING, A BASE PLATE, A MEMBER CLAMPING SAID MASK TO SAID BASE PLATE TO FORM A FLUID-TIGHT SEAL BETWEEN SAID MASK AND SAID BASE PLATE, RESILIENT CONTACT MEANS ON SAID BASE PLATE FOR ENGAGING THE PLATES IN SAID MASK OPENINGS, SAID RESILIENT CONTACT MEANS FORCING THE PLATES WITHIN THE MASK OPENINGS AGAINST THEIR RESPECTIVE ANNULAR SHOULDERS TO FORM A FLUID-TIGHT SEAL THEREWITH, SAID MEMBER HAVING A PLURALITY OF OPENINGS COAXIAL WITH SAID MASK OPENINGS, A PORT TERMINATING IN EACH OF SAID MEMBER OPENINGS, MEANS FOR CONNECTING SAID PORT TO A PUMP WHEREBY THE ELECTROLYTIC FLUID IS MOVED THROUGH SAID PORTS AND MEMBER OPENINGS OVER THE EXPOSED SURFACES OF THE PLATES SEATED IN THE MASK OPENINGS, ELECTRODES RECEIVED WITHIN SAID MEMBER OPENINGS WITH SOME CLEARANCE, AND MEANS FOR CONNECTING SAID ELECTRODES AND SAID RESILIENT CONTACT MEANS INTO AN ELECTRICAL CIRCUIT.
Claim 2
Dependent Claim
178 words
A FIXTURE FOR HOLDING PLATES IN AN ELECTROLYTIC BATH COMPRISING A MASK OF RESILIENT, SAID MASK BEING PROVIDED WITH A PLURALITY OF OPENINGS, AN ANNULAR SHOULDER IN EACH OF SAID OPENINGS FOR SEATING A PLATE DISPOSED IN THE MASK OPENING, A BASE PLATE, A MEMBER CLAMPING SAID MASK TO SAID BASE PLATE TO FORM A FLUID-TIGHT SEAL BETWEEN SAID MASK AND SAID BASE PLATE, RESILIENT CONTACT MEANS ON SAID BASE PLATE FOR ENGAGING THE PLATES IN SAID MASK OPENINGS, SAID RESILIENT CONTACT MEANS FORCING THE PLATES WITHIN THE MASK OPENINGS AGAINST THEIR RESPECTIVE ANNULAR SHOULDERS TO FORM A FLUID-TIGHT SEAL THEREWITH, SAID MEMBER HAVING A PLURALITY OF OPENINGS COAXIAL WITH SAID MASK OPENINGS, A PORT TERMINATING IN EACH OF SAID MEMBER OPENINGS, MEANS FOR CONNECTING SAID PORT TO A PUMP WHEREBY THE ELECTROLYTIC FLUID IS MOVED THROUGH SAID PORTS AND MEMBER OPENINGS OVER THE EXPOSED SURFACES OF THE PLATES SEATED IN THE MASK OPENINGS, ELECTRODES RECEIVED WITHIN SAID MEMBER OPENINGS WITH SOME CLEARANCE, AND MEANS FOR CONNECTING SAID ELECTRODES AND SAID RESILIENT CONTACT MEANS INTO AN ELECTRICAL CIRCUIT.
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) | 1958-10-24 | 1959-04-25 | 1959-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-24 | 1963-04-25 | 1963-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-24 | 1967-04-25 | 1967-10-25 | $7700.00 | Window Closed / Lapsed |