US2768869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distillation method and apparatus for dry cleaning
Assignee: American Laundry Machinery Co
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Filing: 1952-08-27
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Granted: 1956-10-30
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Expires: 1972-08-27
Abstract
No abstract record available.
Inventors
- 👤 Edward A Creswick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:35
CPC Classifications
D; D06; D06F; D06F43/00; D06F43/08; D06F43/081
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
209 words
A METHOD OF CLEANING FABRICS FOR USE IN A DRY CLEANING SYSTEM UTILIZING A WASHER-EXTRACTOR MACHINE, A WASHING LIQUID RESERVOIR, A RINSING LIQUID RESERVOIR, A WASHING LIQUID FILTER, A WASHING LIQUID PUMP, A RINSING LIQUID PUMP, AND A STILL, THE METHOD COMPRISING A PLURALITY OF CYCLES, EACH CYCLE EFFECTING THE CLEANING OF A RESPECTIVE BATCH OF FABRICS BY MEANS OF A WASHING STEP FOLLOWED BY A RINSING STEP, THE WASHING STEP CONSISTING OF CIRCULATING THE WASHING LIQUID FROM SAID WASHING LIQUID RESERVOIR THROUGH THE FABRIC IN SAID WASHER-EXTRACTOR AND THROUGH SAID FILTER, THE METHOD FURTHERR COMPRISING CIRCULATING THE WASHING LIQUID THROUGH SAID FILTER BETWEEN SAID WASHING STEPS AND RETURNING IT TO THE WASHING LIQUID RESERVOIR WHILE BY-PASSING SAID WASHER-EXTRACTOR, THE RINSING STEP CONSISTING OF CIRCULATING RINSE LIQUID CONTAINING SOLUBLE SOIL FROM SAID RINSE LIQUID RESERVOIR THROUGH THE WASHED FABRIC IN SAID WASHER-EXTRACTOR AND RETURNING SOIL-CONTAINING RINSE LIQUID TO SAID RINSE LIQUID RESERVOIR, THE METHOD FURTHER COMPRISING CONTINUOUSLY, AND SIMULTANEOUSLY WITH THE RINSING STEP, TRANSMITTING A SOLUBLE SOIL-CONTAINING PORTION OF SAID RINSE LIQUID FROM SAID RINSE LIQUID RESERVOIR DIRECTLY TO SAID STILL, AND CONTINUOUSLY RETURNING DISTILLED RINSE LIQUID FROM SAID STILL TO SAID RINSE LIQUID RESERVOIR WHEREBY TO MAINTAIN THE SOIL CONTENT OF SAID RINSE LIQUID BELOW A PREDETERMINED LEVEL.
Claim 2
Independent Claim
209 words
A METHOD OF CLEANING FABRICS FOR USE IN A DRY CLEANING SYSTEM UTILIZING A WASHER-EXTRACTOR MACHINE, A WASHING LIQUID RESERVOIR, A RINSING LIQUID RESERVOIR, A WASHING LIQUID FILTER, A WASHING LIQUID PUMP, A RINSING LIQUID PUMP, AND A STILL, THE METHOD COMPRISING A PLURALITY OF CYCLES, EACH CYCLE EFFECTING THE CLEANING OF A RESPECTIVE BATCH OF FABRICS BY MEANS OF A WASHING STEP FOLLOWED BY A RINSING STEP, THE WASHING STEP CONSISTING OF CIRCULATING THE WASHING LIQUID FROM SAID WASHING LIQUID RESERVOIR THROUGH THE FABRIC IN SAID WASHER-EXTRACTOR AND THROUGH SAID FILTER, THE METHOD FURTHERR COMPRISING CIRCULATING THE WASHING LIQUID THROUGH SAID FILTER BETWEEN SAID WASHING STEPS AND RETURNING IT TO THE WASHING LIQUID RESERVOIR WHILE BY-PASSING SAID WASHER-EXTRACTOR, THE RINSING STEP CONSISTING OF CIRCULATING RINSE LIQUID CONTAINING SOLUBLE SOIL FROM SAID RINSE LIQUID RESERVOIR THROUGH THE WASHED FABRIC IN SAID WASHER-EXTRACTOR AND RETURNING SOIL-CONTAINING RINSE LIQUID TO SAID RINSE LIQUID RESERVOIR, THE METHOD FURTHER COMPRISING CONTINUOUSLY, AND SIMULTANEOUSLY WITH THE RINSING STEP, TRANSMITTING A SOLUBLE SOIL-CONTAINING PORTION OF SAID RINSE LIQUID FROM SAID RINSE LIQUID RESERVOIR DIRECTLY TO SAID STILL, AND CONTINUOUSLY RETURNING DISTILLED RINSE LIQUID FROM SAID STILL TO SAID RINSE LIQUID RESERVOIR WHEREBY TO MAINTAIN THE SOIL CONTENT OF SAID RINSE LIQUID BELOW A PREDETERMINED LEVEL.
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) | 1959-10-30 | 1960-04-30 | 1960-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-30 | 1964-04-30 | 1964-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-30 | 1968-04-30 | 1968-10-30 | $7700.00 | Window Closed / Lapsed |