Patent US2737435A successfully refreshed from Google Patents.
US2737435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
borck
Assignee: —
•
Filing: —
•
Granted: 1956-03-06
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Expires: 1973-03-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:30
CPC Classifications
D; D21; D21C; D21C9/00; D21C9/02; D21C9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
227 words
IN THE WASHING OF RAW WOOL BY PASSING THE WOOL CONTINUOUSLY THROUGH A SERIES OF WASHING ZONES IN SEQUENCE, AND CONTINUOUSLY PASSING AN ORGANIC SOLVENT AS A WASHING AGENT COUNTERCURRENTLY TO THE WOOL FROM EACH WASHING ZONE TO THE ZONE NEXT PRECEDING IT AND FROM THE FIRST ZONE BACK TO THE LAST ZONE IN SAID SERIES, SAID FIRST ZONE AND LAST ZONE BEING RECKONED IN THE DIRECTION OF THE WOOL FLOW, THE IMPROVEMENT WHICH COMPRISES FEEDING THE WASHING AGENT TO A CENTRIFUGAL LOCUS IN ITS PASSAGE FROM AT LEAST ONE WASHING ZONE TO ANOTHER, OTHER THAN FROM SAID FIRST ZONE, AND SEPARATING THE AGENT IN SAID LOCUS INTO ONE COMPONENT RICH IN SLUDGE AND ONE COMPONENT POOR IN SLUDGE, RETURNING AT LEAST PART OF SAID COMPONENT POOR IN SLUDGE TO THE SAME ZONE FROM WHICH SAID AGENT WAS FED TO THE CENTRIFUGAL LOCUS, THE COMPONENT RICH IN SLUDGE BEING FED AT LEAST IN PART TO A PRECEDING ZONE IN SAID SERIES, SEPARATING THE WASHING AGENT DISCHARGED FROM SAID FIRST ZONE IN A SECOND CENTRIFUGAL LOCUS INTO A COMPONENT RICH IN SLUDGE AND A COMPONENT POOR IN SLUDGE, RETURNING SAID LAST COMPONENT TO SAID FIRST ZONE, AND PURIFYING THE COMPONENT RICH IN SLUDGE FROM SAID SECOND LOCUS ON ITS WAY BACK TO THE LAST ZONE TO REMOVE THE SLUDGE AS WELL AS DISSOLVED WOOL GREASE FROM THE AGENT.
Claim 2
Dependent Claim
227 words
IN THE WASHING OF RAW WOOL BY PASSING THE WOOL CONTINUOUSLY THROUGH A SERIES OF WASHING ZONES IN SEQUENCE, AND CONTINUOUSLY PASSING AN ORGANIC SOLVENT AS A WASHING AGENT COUNTERCURRENTLY TO THE WOOL FROM EACH WASHING ZONE TO THE ZONE NEXT PRECEDING IT AND FROM THE FIRST ZONE BACK TO THE LAST ZONE IN SAID SERIES, SAID FIRST ZONE AND LAST ZONE BEING RECKONED IN THE DIRECTION OF THE WOOL FLOW, THE IMPROVEMENT WHICH COMPRISES FEEDING THE WASHING AGENT TO A CENTRIFUGAL LOCUS IN ITS PASSAGE FROM AT LEAST ONE WASHING ZONE TO ANOTHER, OTHER THAN FROM SAID FIRST ZONE, AND SEPARATING THE AGENT IN SAID LOCUS INTO ONE COMPONENT RICH IN SLUDGE AND ONE COMPONENT POOR IN SLUDGE, RETURNING AT LEAST PART OF SAID COMPONENT POOR IN SLUDGE TO THE SAME ZONE FROM WHICH SAID AGENT WAS FED TO THE CENTRIFUGAL LOCUS, THE COMPONENT RICH IN SLUDGE BEING FED AT LEAST IN PART TO A PRECEDING ZONE IN SAID SERIES, SEPARATING THE WASHING AGENT DISCHARGED FROM SAID FIRST ZONE IN A SECOND CENTRIFUGAL LOCUS INTO A COMPONENT RICH IN SLUDGE AND A COMPONENT POOR IN SLUDGE, RETURNING SAID LAST COMPONENT TO SAID FIRST ZONE, AND PURIFYING THE COMPONENT RICH IN SLUDGE FROM SAID SECOND LOCUS ON ITS WAY BACK TO THE LAST ZONE TO REMOVE THE SLUDGE AS WELL AS DISSOLVED WOOL GREASE FROM THE AGENT.
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) | 1959-03-06 | 1959-09-05 | 1960-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-06 | 1963-09-05 | 1964-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-06 | 1967-09-05 | 1968-03-06 | $7700.00 | Window Closed / Lapsed |