Patent US2745798A successfully refreshed from Google Patents.
US2745798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating metal surfaces
Assignee: Individual
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Filing: 1951-11-06
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Granted: 1956-05-15
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Expires: 1971-11-06
Abstract
No abstract record available.
Inventors
- 👤 Batist R Haueisen
- 👤 Fred A Wales
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:08
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/02; C25D11/04; C25D11/06; C25D11/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
IN THE METHOD OF SELECTIVELY FORMING A CORROSION RESISTANT COATING ON THE EXTERIOR SURFACES OF THE ALUMINUM ALLOY PORTIONS OF A COMPOSITE ALUMINUM STEEL STRUT INTERNAL COMBUSTION ENGINE PISTON, THE STEPS OF PLACING SAID PISTON UPRIGHT IN A TUBULAR POROUS SHELL SUPPORTED IN A VERTICAL POSITION AND HAVING AN ABSORBENT LINER THEREIN IN CONTACT WITH THE SIDES OF SAID PISTON, FLOODING THE TOP OF SAID PISTON WITH AN ACID ELECTROLYTE IN REGULATED AMOUNTS AND ALLOWING THE ELECTROLYTE TO FLOW DOWNWARDLY THROUGH SAID ABSORBENT LINER, CONNECTING SAID POROUS, SHELL AS THE CATHODE AND SAID PISTON AS THE ANODE AND PASSING AN ELECTRIC CURRENT THEREBETWEEN SO AS TO FORM SAID COATING ON THE SURFACES OF SAID PISTON WHICH ARE WET WITH SAID ELECTROLYTE, AND PROVIDING CIRCULATING MEANS FOR SAID ELECTROLYTE INCLUDING MEANS TO MAINTAIN SAID ELECTROLYTE AT A PREDETERMINED ACID CONCENTRATION AND TEMPERATURE.
Claim 2
Dependent Claim
141 words
IN THE METHOD OF SELECTIVELY FORMING A CORROSION RESISTANT COATING ON THE EXTERIOR SURFACES OF THE ALUMINUM ALLOY PORTIONS OF A COMPOSITE ALUMINUM STEEL STRUT INTERNAL COMBUSTION ENGINE PISTON, THE STEPS OF PLACING SAID PISTON UPRIGHT IN A TUBULAR POROUS SHELL SUPPORTED IN A VERTICAL POSITION AND HAVING AN ABSORBENT LINER THEREIN IN CONTACT WITH THE SIDES OF SAID PISTON, FLOODING THE TOP OF SAID PISTON WITH AN ACID ELECTROLYTE IN REGULATED AMOUNTS AND ALLOWING THE ELECTROLYTE TO FLOW DOWNWARDLY THROUGH SAID ABSORBENT LINER, CONNECTING SAID POROUS, SHELL AS THE CATHODE AND SAID PISTON AS THE ANODE AND PASSING AN ELECTRIC CURRENT THEREBETWEEN SO AS TO FORM SAID COATING ON THE SURFACES OF SAID PISTON WHICH ARE WET WITH SAID ELECTROLYTE, AND PROVIDING CIRCULATING MEANS FOR SAID ELECTROLYTE INCLUDING MEANS TO MAINTAIN SAID ELECTROLYTE AT A PREDETERMINED ACID CONCENTRATION AND TEMPERATURE.
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) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |