US3281269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for cleaning of tanks
Assignee: CHEMICAL DETERGENTS Co IN
•
Filing: 1963-04-25
•
Granted: 1966-10-25
•
Expires: 1983-04-25
Abstract
No abstract record available.
Inventors
- 👤 Watts Grady
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:26
CPC Classifications
B; B05; B05B; B05B17/00; B05B17/04; B05B17/06; B05B17/0692; B08; B08B; B08B9/00; B08B9/08; B08B9/093
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
THE PROCESS OF CLEANING A TANK CONTAMINATED WITH A COATING OF A SOLVENT-ATTACKABLE CONTAMINANT ADHERING TO THE WALLS OF SAID TANK COMPRISING THE STEPS OF: (A) GENERATING WITHIN SAID TANK A FOG COMPOSED OF PARTICLES OF A SOLVENT WHICH WILL ATTACH SAID CONTAMINANT TO RENDER IT NONADHERENT TO SAID TANK WALLS, SAID FOG BEING COMPOSED OF SOLVENT PARTICLES THE MAJOR PROPORTION WHICH HAVE A PARTICLE-SIZE DISTRIBUTION OF LESS THAN 10 MICRONS; (B) MAINTAINING SAID FOG IN AN ACOUSTICALLY AGITATED CONDITION UNTIL SAID CONTAMINANT IS NONADHERENT TO SAID TANK WALLS; (C) DRAINING SAID SOLVENT FROM SAID TANK; AND (D) FLUSHING SAID TANK TO REMOVE SAID ATTACKED CONTAMINANT.
Claim 2
Dependent Claim
106 words
THE PROCESS OF CLEANING A TANK CONTAMINATED WITH A COATING OF A SOLVENT-ATTACKABLE CONTAMINANT ADHERING TO THE WALLS OF SAID TANK COMPRISING THE STEPS OF: (A) GENERATING WITHIN SAID TANK A FOG COMPOSED OF PARTICLES OF A SOLVENT WHICH WILL ATTACH SAID CONTAMINANT TO RENDER IT NONADHERENT TO SAID TANK WALLS, SAID FOG BEING COMPOSED OF SOLVENT PARTICLES THE MAJOR PROPORTION WHICH HAVE A PARTICLE-SIZE DISTRIBUTION OF LESS THAN 10 MICRONS; (B) MAINTAINING SAID FOG IN AN ACOUSTICALLY AGITATED CONDITION UNTIL SAID CONTAMINANT IS NONADHERENT TO SAID TANK WALLS; (C) DRAINING SAID SOLVENT FROM SAID TANK; AND (D) FLUSHING SAID TANK TO REMOVE SAID ATTACKED CONTAMINANT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |