US3246392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of repairing aircraft cylinder heads
Assignee: Individual
•
Filing: 1965-07-01
•
Granted: 1966-04-19
•
Expires: 1985-07-01
Abstract
No abstract record available.
Inventors
- 👤 George A Altgelt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:03
CPC Classifications
B; B23; B23P; B23P6/00; B23P6/04; F; F02; F02F; F02F1/00; F02F1/24; F02F1/26; F02F1/28; F02F1/30; F02F1/32; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49718; Y10T29/49746
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A METHOD OF REPAIRING DAMAGED ALUMINUM CASTINGS COMPRISING THE STEPS OF PREHEATING THE CASTING TO 175*-200* FAHRENHEIT, INSPECTING THE CASTING INTERNALLY AND EXTERNALLY TO DETERMINE THE LOCATION OF DAMAGE, REMOVING ALL MATERIAL BOUNDING THE DAMAGED PORTIONS OF THE CASTING, HEATING THE PORTION OF THE CASTING WHERE THE DAMAGE OCCURS TO A TEMPERATURE RANGING FROM 250*-1,000* FAHRENHEIT UNTIL SAID PORTION BEGINS TO BECOME FLUID, WELDING THE DAMAGED PORTION UTILIZING AN INERT GAS AND A FILLER ROD CONTAINING THE SAME BASIC COMPOSITION AS THE COMPOSITION OF THE CASTING, ALLOWING THE CASTING TO SLOWLY RETURN TO AMBIENT TEMPERATURE, REWORKING THE REPAIRED PORTION TO RETURN THE CASTING TO ITS ORIGINAL CONFIGURATION, HEATING THE CASTING TO 175*-200* FAHRENHEIT, HEAT SOAKING THE CASTING AT APPROXIMATELY 550* FAHRENHEIT FOR APPROXIMATELY 45 MINUTES, AND ALLOWING THE CASTING TO SLOWLY RETURN TO AMBIENT TEMPERATURE.
Claim 2
Independent Claim
135 words
A METHOD OF REPAIRING DAMAGED ALUMINUM CASTINGS COMPRISING THE STEPS OF PREHEATING THE CASTING TO 175*-200* FAHRENHEIT, INSPECTING THE CASTING INTERNALLY AND EXTERNALLY TO DETERMINE THE LOCATION OF DAMAGE, REMOVING ALL MATERIAL BOUNDING THE DAMAGED PORTIONS OF THE CASTING, HEATING THE PORTION OF THE CASTING WHERE THE DAMAGE OCCURS TO A TEMPERATURE RANGING FROM 250*-1,000* FAHRENHEIT UNTIL SAID PORTION BEGINS TO BECOME FLUID, WELDING THE DAMAGED PORTION UTILIZING AN INERT GAS AND A FILLER ROD CONTAINING THE SAME BASIC COMPOSITION AS THE COMPOSITION OF THE CASTING, ALLOWING THE CASTING TO SLOWLY RETURN TO AMBIENT TEMPERATURE, REWORKING THE REPAIRED PORTION TO RETURN THE CASTING TO ITS ORIGINAL CONFIGURATION, HEATING THE CASTING TO 175*-200* FAHRENHEIT, HEAT SOAKING THE CASTING AT APPROXIMATELY 550* FAHRENHEIT FOR APPROXIMATELY 45 MINUTES, AND ALLOWING THE CASTING TO SLOWLY RETURN TO AMBIENT 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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |