US3266934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of contaminants from interiors of enclosures
Assignee: Individual
•
Filing: 1962-12-04
•
Granted: 1966-08-16
•
Expires: 1982-12-04
Abstract
No abstract record available.
Inventors
- 👤 John R Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:47
CPC Classifications
C; C23; C23G; C23G3/00; C23G3/04; B; B05; B05B; B05B3/00; B05B3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
THE METHOD OF CLEANING METAL SURFACES IN THE INTERIOR OF AN ENCLOSURE TO REMOVE CONTAMINANTS THEREFROM, WHICH COMPRISES THE STEPS OF: PREHEATING SAID SURFACES BY PASSING INTO SAID ENCLOSURE A STREAM OF SUBSTANTIALLY DRY, HEATED FLUID MEDIUM; FORMING A MIXTURE OF STEAM AND A LIQUID CONTAINING A CLEANING AGENT BY INJECTING SAID LIQUID IN SHORT PERIODIC INCREMENTS INTO A STREAM OF SAID STEAM; DISCHARGING SAID MIXTURE INTO SAID ENCLOSURE IN FINELY DIVIDED FORM AS AN ANNULAR CURTAIN OF FOG WHILE DIRECTING A PLURALITY OF JETS OF DRY STEAM AT A SUBSTANTIAL ANGLE AGAINST SAID CURTAIN TO FURTHER DIVIDE SAID MIXTURE INTO A COLLOIDAL FOG WITHIN SAID ENCLOSURE; THEN RINSING SAID SURFACES IN SAID ENCLOSURE; AND THEN SUBJECTING THE INTERIOR OF SAID ENCLOSURE TO A FLOW OF HEATED, SUBSTANTIALLY DRY FLUID MEDIUM TO EFFECT DRYING OF SAID SURFACES.
Claim 2
Independent Claim
137 words
THE METHOD OF CLEANING METAL SURFACES IN THE INTERIOR OF AN ENCLOSURE TO REMOVE CONTAMINANTS THEREFROM, WHICH COMPRISES THE STEPS OF: PREHEATING SAID SURFACES BY PASSING INTO SAID ENCLOSURE A STREAM OF SUBSTANTIALLY DRY, HEATED FLUID MEDIUM; FORMING A MIXTURE OF STEAM AND A LIQUID CONTAINING A CLEANING AGENT BY INJECTING SAID LIQUID IN SHORT PERIODIC INCREMENTS INTO A STREAM OF SAID STEAM; DISCHARGING SAID MIXTURE INTO SAID ENCLOSURE IN FINELY DIVIDED FORM AS AN ANNULAR CURTAIN OF FOG WHILE DIRECTING A PLURALITY OF JETS OF DRY STEAM AT A SUBSTANTIAL ANGLE AGAINST SAID CURTAIN TO FURTHER DIVIDE SAID MIXTURE INTO A COLLOIDAL FOG WITHIN SAID ENCLOSURE; THEN RINSING SAID SURFACES IN SAID ENCLOSURE; AND THEN SUBJECTING THE INTERIOR OF SAID ENCLOSURE TO A FLOW OF HEATED, SUBSTANTIALLY DRY FLUID MEDIUM TO EFFECT DRYING OF SAID SURFACES.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |