US2711978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for cleaning surfaces of oil and oily deposits and for reclaiming the liquid used in cleaning
Assignee: Individual
•
Filing: 1951-08-08
•
Granted: 1955-06-28
•
Expires: 1971-08-08
Abstract
No abstract record available.
Inventors
- 👤 Groom Reginald William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:36
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/08; B08B9/093; B08B9/0936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A METHOD OF CLEANSING THE INTERIOR SURFACES OF TANKS BY THE SUBSTANTIAL REMOVAL OF OILY DEPOSITS FROM SUCH SURFACES, SUCH METHOD COMPRISING INTRODUCING AT LEAST ONE NOZZLE INTO THE TANK, HEATING AND SUPPLYING TO THE SAID NOZZLE AN AQUEOUS DETERGENT LIQUID OF SUITABLE CONCENTRATION UNDER SUCH PRESSURE THAT SAID LIQUID IS PROJECTED AGAINST AND CLEANS THE SAID SURFACES; COLLECTING THE MIXTURE OF AQUEOUS DETERGENT LIQUID AND REMOVED OILY DEPOSITS; WITHDRAWING SAID MIXTURE FROM SAID TANK; SEPARATING, BY GRAVITY SEPARATION FROM SUCH MIXTURE THE AQUEOUS DETERGENT LIQUID, THE OIL (WHICH FLOATS ON THE SURFACE OF THE AQUEOUS DETERGENT LIQUID) AND THE SLUDGE (WHICH SINKS IN SUCH LIQUID); WITHDRAWING THE SAID OIL FOR RECLAMATION; WITHDRAWING THE SAID SLUDGE SEPARATELY OF SAID OIL; REHEATING SAID SEPARATED AQUEOUS DETERGENT LIQUID AND RECIRCULATING IT TO SAID NOZZLE FOR FURTHER USE.
Claim 2
Independent Claim
135 words
A METHOD OF CLEANSING THE INTERIOR SURFACES OF TANKS BY THE SUBSTANTIAL REMOVAL OF OILY DEPOSITS FROM SUCH SURFACES, SUCH METHOD COMPRISING INTRODUCING AT LEAST ONE NOZZLE INTO THE TANK, HEATING AND SUPPLYING TO THE SAID NOZZLE AN AQUEOUS DETERGENT LIQUID OF SUITABLE CONCENTRATION UNDER SUCH PRESSURE THAT SAID LIQUID IS PROJECTED AGAINST AND CLEANS THE SAID SURFACES; COLLECTING THE MIXTURE OF AQUEOUS DETERGENT LIQUID AND REMOVED OILY DEPOSITS; WITHDRAWING SAID MIXTURE FROM SAID TANK; SEPARATING, BY GRAVITY SEPARATION FROM SUCH MIXTURE THE AQUEOUS DETERGENT LIQUID, THE OIL (WHICH FLOATS ON THE SURFACE OF THE AQUEOUS DETERGENT LIQUID) AND THE SLUDGE (WHICH SINKS IN SUCH LIQUID); WITHDRAWING THE SAID OIL FOR RECLAMATION; WITHDRAWING THE SAID SLUDGE SEPARATELY OF SAID OIL; REHEATING SAID SEPARATED AQUEOUS DETERGENT LIQUID AND RECIRCULATING IT TO SAID NOZZLE FOR FURTHER USE.
References Cited (Backward Citations)
US1306740A
Cited
US1557240A
Cited
USRE19374E
Cited
US1142083A
Cited
US1487062A
Cited
US1492956A
Cited
US1552998A
Cited
US1628141A
Cited
US1717724A
Cited
US1693885A
Cited
US1722211A
Cited
US1891592A
Cited
US2053199A
Cited
GB520413A
Cited
US2235658A
Cited
US2236895A
Cited
US2324804A
Cited
GB616431A
Cited
US2529762A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-27 | 1958-12-27 | 1959-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-27 | 1962-12-27 | 1963-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-27 | 1966-12-27 | 1967-06-28 | $7700.00 | Window Closed / Lapsed |