Patent US3074822A successfully refreshed from Google Patents.
US3074822A
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Method for cleaning gas turbines
Assignee: C DUDLEY DEVELBISS
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Filing: 1960-04-22
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Granted: 1963-01-22
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Expires: 1980-04-22
Abstract
No abstract record available.
Inventors
- 👤 Udell C Walk
- 👤 Franklin E Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:23
CPC Classifications
B; B24; B24C; B24C1/00; B24C1/003; C; C23; C23G; C23G5/00; F; F05; F05B; F05B2220/00; F05B2220/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A METHOD FOR CLEANING AND REMOVING CONTAMINATING DEPOSITS ON THE METAL SURFACES OF JET ENGINES HAVING A FORWARD AIR INTAKE AND A RARE EXHAUST OUTLET AND THE LIKE COMPRISING THE STEPS OF PROPELLING A CLEANING MATERIAL CONSISTING FROZEN DIOXANE IN COMMINUTED FORM AT THE AIR INTAKE AND EXHAUSTING THE GAS-VAPOR CONTAINING THE REMOVED DEPOSITS AT THE EXHAUST OUTLET.
Claim 2
Independent Claim
58 words
A METHOD FOR CLEANING AND REMOVING CONTAMINATING DEPOSITS ON THE METAL SURFACES OF JET ENGINES HAVING A FORWARD AIR INTAKE AND A RARE EXHAUST OUTLET AND THE LIKE COMPRISING THE STEPS OF PROPELLING A CLEANING MATERIAL CONSISTING FROZEN DIOXANE IN COMMINUTED FORM AT THE AIR INTAKE AND EXHAUSTING THE GAS-VAPOR CONTAINING THE REMOVED DEPOSITS AT THE EXHAUST OUTLET.
References Cited (Backward Citations)
US1529379A
Cited
US2342991A
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US2378815A
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US2601608A
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US2698265A
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US2699403A
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US2701220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |