Patent US2622043A successfully refreshed from Google Patents.
US2622043A
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Chromizing pack and method
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1949-09-30
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Granted: 1952-12-16
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Expires: 1969-09-30
Abstract
No abstract record available.
Inventors
- 👤 Milton S Roush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:35
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/28; C23C10/34; C23C10/36; C23C10/38; C23C10/40; C23C10/42; C23C10/06; C23C10/08; C23C10/10; C23C10/12; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12042; Y10T428/1216; Y10T428/12181
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
THE METHOD OF CHROMIZING COPPER-INFILTERED POWDERED IRON COMPRESSOR BLADES FOR TURBO-JET ENGINES AND THE LIKE WHICH COMPRISIS PACKING THE BLADES IN A BASKET EMBEDDED IN A GRANULAR MIXTURE OF FERROCHROME AND TITANIUM DIOXIDE, SEALING THE PACKED BASKET IN A RETORE, PRUGING THE RETORT WITH HYDROGEN, HEATING THE RETORT TO CHROMIZING TEMPERATURES WHILE CONTINUING THE HYDROGEN PURGE, FLOWING HYDROGEN CHLORIDE THROUGH THE HEATED RETORT, CONTINUING THE HEAT TREATMENT AND HYDROEN CHLORIDE TREATMENT UNTIL A DESIRED LCHROMIZED FINISH HAS BEEN PRODUCED ON THE BLADES AND UNTIL PART OF THE TITANIUM IN THE PACK ALLOYS
Claim 2
Independent Claim
92 words
THE METHOD OF CHROMIZING COPPER-INFILTERED POWDERED IRON COMPRESSOR BLADES FOR TURBO-JET ENGINES AND THE LIKE WHICH COMPRISIS PACKING THE BLADES IN A BASKET EMBEDDED IN A GRANULAR MIXTURE OF FERROCHROME AND TITANIUM DIOXIDE, SEALING THE PACKED BASKET IN A RETORE, PRUGING THE RETORT WITH HYDROGEN, HEATING THE RETORT TO CHROMIZING TEMPERATURES WHILE CONTINUING THE HYDROGEN PURGE, FLOWING HYDROGEN CHLORIDE THROUGH THE HEATED RETORT, CONTINUING THE HEAT TREATMENT AND HYDROEN CHLORIDE TREATMENT UNTIL A DESIRED LCHROMIZED FINISH HAS BEEN PRODUCED ON THE BLADES AND UNTIL PART OF THE TITANIUM IN THE PACK ALLOYS
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) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |