US2885304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of aluminum coating
Assignee: Motors Liquidation Co
•
Filing: 1954-09-29
•
Granted: 1959-05-05
•
Expires: 1974-09-29
Abstract
No abstract record available.
Inventors
- 👤 Robert F Thomson
- 👤 Jr Albert A Shoudy
- 👤 Dean K Hanink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:22
CPC Classifications
C; C23; C23C; C23C24/00; C23C24/08; C23C24/10; C23C24/103; C23C24/106
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
A METHOD OF FORMING A CORROSION-RESISTANT VALVE FOR AN INTERNAL COMBUSTION ENGINE WHICH COMPRISES CLEANING A FERROUS BASE POPPET VALVE, PREHEATING THE SEATING FACE OF SAID VALVE BY INDUCTION HEATING, RIGIDLY ROTATION SAID VALVE, SPRING SAID SEATING FACE WITH MOLTEN ALUMINUM PARTICLES WHILE SAID VALVE IS ROTATING TO PROVIDE A THIN LAYER OF ALUMINUM ON SAID FACE, SUBSEQUENTLY IMMERSING THE HEAD OF SAID VALVE IN A FUSED SALT BATH CONSISTING ESSENTIALLY OF 37% TO 57% BY WEIGHT OF KC1, 25% TO 45% BY WEIGHT OF NAC1, 1% TO 20% BY WEIGHT OF NA3A1F6, AND 0.5% TO 12% BY WEIGHT OF A1F3, MAINTAINED AT A TEMPERATURE OF ABOUT 1325* F. TO 1375* F. AND ACTIVATED BY ALUMINUM IS CONTACT THEREWITH TO CAUSE SAID ALUMINUM TO MELT AND SAID FACE TO BE FLUXED, THEREAFTER RAPIDLY VIBRATING THE VALVE WHILE THE HEAD THEREOF IS IMMERSED IN SAID SALT BATH TO THEREBY DISTRIBUTE THE MOLTEN ALUMINUM EVENLY OVER SAID SEATING FACE AND TO REMOVE ANY EXCESS MOLTEN ALUMINUM THEREFROM, SUBSEQUENTLY REMOVING THE COATED POPPET VALVE FROM SAID FUSED SALT BATH AND PERMITTING THE MOLTEN ALUMINUM TO SOLIDIFY ON SAID SEATING FACE.
Claim 2
Independent Claim
187 words
A METHOD OF FORMING A CORROSION-RESISTANT VALVE FOR AN INTERNAL COMBUSTION ENGINE WHICH COMPRISES CLEANING A FERROUS BASE POPPET VALVE, PREHEATING THE SEATING FACE OF SAID VALVE BY INDUCTION HEATING, RIGIDLY ROTATION SAID VALVE, SPRING SAID SEATING FACE WITH MOLTEN ALUMINUM PARTICLES WHILE SAID VALVE IS ROTATING TO PROVIDE A THIN LAYER OF ALUMINUM ON SAID FACE, SUBSEQUENTLY IMMERSING THE HEAD OF SAID VALVE IN A FUSED SALT BATH CONSISTING ESSENTIALLY OF 37% TO 57% BY WEIGHT OF KC1, 25% TO 45% BY WEIGHT OF NAC1, 1% TO 20% BY WEIGHT OF NA3A1F6, AND 0.5% TO 12% BY WEIGHT OF A1F3, MAINTAINED AT A TEMPERATURE OF ABOUT 1325* F. TO 1375* F. AND ACTIVATED BY ALUMINUM IS CONTACT THEREWITH TO CAUSE SAID ALUMINUM TO MELT AND SAID FACE TO BE FLUXED, THEREAFTER RAPIDLY VIBRATING THE VALVE WHILE THE HEAD THEREOF IS IMMERSED IN SAID SALT BATH TO THEREBY DISTRIBUTE THE MOLTEN ALUMINUM EVENLY OVER SAID SEATING FACE AND TO REMOVE ANY EXCESS MOLTEN ALUMINUM THEREFROM, SUBSEQUENTLY REMOVING THE COATED POPPET VALVE FROM SAID FUSED SALT BATH AND PERMITTING THE MOLTEN ALUMINUM TO SOLIDIFY ON SAID SEATING FACE.
References Cited (Backward Citations)
US1655269A
Cited
US1565495A
Cited
US2172933A
Cited
US2273250A
Cited
US2295702A
Cited
US2361962A
Cited
GB577427A
Cited
GB620165A
Cited
US2664873A
Cited
US2569097A
Cited
US2744032A
Cited
US2751311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |