US2923648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Di-phase cleaning system
Assignee: EIDP Inc
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Filing: 1956-09-26
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Granted: 1960-02-02
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Expires: 1976-09-26
Abstract
No abstract record available.
Inventors
- 👤 Burg Robert T K
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:09
CPC Classifications
C; C23; C23G; C23G5/00; C23G5/02; C23G5/04; D; D06; D06F; D06F43/00; D06F43/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
195 words
AN APPARATUS FOR CLEANING SURFACE-CONTAMINATED, NON-POROUS ARTICLES WITH A DIPHASE BATH CONSISTING OF A NON-AQUEOUS SOLVENT HAVING A DENSITY SUBSTANTIALLY GREATER THAN WATER AND WATER, SAID APPARATUS COMPRISING: (1) AND ELONGATED TANK ADAPTED TO CONTAIN IN THE LOWER PART A QUANTITY OF THE SAID NON-AQUEOUS SOLVENT OFF SUFFICIENT DEPTH FOR COMPLETE IMMERSION THEREIN OF THE AFORESAID ARTICLES AND IN THE UPPER PART A SUPERNATANT LAYER OF WATER, SAID TANK BEING PROVIDED WITH SEPARATE AND DISTINCT MEANS FOR MAINTAINING A CONTINUOUS FLOW OF FLUID IN BOTH THE LOWER AND UPPER PARTS THEREOF, SAID MEANS BEING ADAPTED TO REMOVE THE DENSER, NON-AQUEOUS SOLVENT FROM ONE END OF THE LOWER PART OF THE TANK AND ADDITION THEREOF TO THE OTHER END OF THE LOWER PART OF THE TANK AND MEANS ADAPTED TO REMOVE THE LESS DENSE WATER FROM ONE END OF THE UPPER PART OF THE TANK AND ADDITION THEREOF AT THE OTHER END OF THE UPPER PART OF THE TANK AND (2) MEANS FOR DIPPING THE AFORESAID ARTICLES THROUGH THE UPPER PART OF THE TANK INTO THE LOWER PART THEREOF, CONVEYING THEM LONGITUDINALLY THROUGH SAID LOWER PART AND REMOVING THEM THROUGH THE UPPER PART OF THE TANK.
Claim 2
Independent Claim
195 words
AN APPARATUS FOR CLEANING SURFACE-CONTAMINATED, NON-POROUS ARTICLES WITH A DIPHASE BATH CONSISTING OF A NON-AQUEOUS SOLVENT HAVING A DENSITY SUBSTANTIALLY GREATER THAN WATER AND WATER, SAID APPARATUS COMPRISING: (1) AND ELONGATED TANK ADAPTED TO CONTAIN IN THE LOWER PART A QUANTITY OF THE SAID NON-AQUEOUS SOLVENT OFF SUFFICIENT DEPTH FOR COMPLETE IMMERSION THEREIN OF THE AFORESAID ARTICLES AND IN THE UPPER PART A SUPERNATANT LAYER OF WATER, SAID TANK BEING PROVIDED WITH SEPARATE AND DISTINCT MEANS FOR MAINTAINING A CONTINUOUS FLOW OF FLUID IN BOTH THE LOWER AND UPPER PARTS THEREOF, SAID MEANS BEING ADAPTED TO REMOVE THE DENSER, NON-AQUEOUS SOLVENT FROM ONE END OF THE LOWER PART OF THE TANK AND ADDITION THEREOF TO THE OTHER END OF THE LOWER PART OF THE TANK AND MEANS ADAPTED TO REMOVE THE LESS DENSE WATER FROM ONE END OF THE UPPER PART OF THE TANK AND ADDITION THEREOF AT THE OTHER END OF THE UPPER PART OF THE TANK AND (2) MEANS FOR DIPPING THE AFORESAID ARTICLES THROUGH THE UPPER PART OF THE TANK INTO THE LOWER PART THEREOF, CONVEYING THEM LONGITUDINALLY THROUGH SAID LOWER PART AND REMOVING THEM THROUGH THE UPPER PART OF THE TANK.
Claim 3
Dependent Claim
127 words
A CONTINUOUS PROCESS FOR CLEANING SURFACE-CONTAMINATED, NON-POROUS ARTICLES WHICH COMPRISES: (1) PROVIDING A DI-PHASE BATH CONSISTING OF A LOWER SOLVENT PHASE HAVING A DENSITY SUBSTANTIALLY GREATER THAN WATER AND AN UPPER WATER PHASE, THE TEMPERATURE OF SAID DI-PHASE BATH BEING NOT GREATER THAN THE BOILING POINT OF THE WATERSOLVENT AZETROPE, (2) SUCCESSIVELY DIPPING SAID ARTICLES THROUGH SAID WATER-PHASE INTO SAID SOLVENT PHASE, CONVEYING THEM LONGITUDINALLY THROUGH SAID SOLVENT PHASE IN ONE DIRECTION AND REMOVING THEM THROUGH SAID WATER PHASE SO THAT SOIL SOLUBLE AND DISPERSIBLE IN BOTH PHASES WILL BE REMOVED AND (3) MAINTAINING CONSTANT, DISTINCT AND SEPARATE FLOWS OF THE FLUIDS CONSTITUTING THE UPPER AND LOWER PHASES, THE FLOW OF THE LOWER PHASE BEING COUNTER-CURRENT TO THE LONGITUDINAL MOVEMENT OF THE AFORESAID ARTICLES THROUGH THE BATH.
Claim 4
Dependent Claim
127 words
A CONTINUOUS PROCESS FOR CLEANING SURFACE-CONTAMINATED, NON-POROUS ARTICLES WHICH COMPRISES: (1) PROVIDING A DI-PHASE BATH CONSISTING OF A LOWER SOLVENT PHASE HAVING A DENSITY SUBSTANTIALLY GREATER THAN WATER AND AN UPPER WATER PHASE, THE TEMPERATURE OF SAID DI-PHASE BATH BEING NOT GREATER THAN THE BOILING POINT OF THE WATERSOLVENT AZETROPE, (2) SUCCESSIVELY DIPPING SAID ARTICLES THROUGH SAID WATER-PHASE INTO SAID SOLVENT PHASE, CONVEYING THEM LONGITUDINALLY THROUGH SAID SOLVENT PHASE IN ONE DIRECTION AND REMOVING THEM THROUGH SAID WATER PHASE SO THAT SOIL SOLUBLE AND DISPERSIBLE IN BOTH PHASES WILL BE REMOVED AND (3) MAINTAINING CONSTANT, DISTINCT AND SEPARATE FLOWS OF THE FLUIDS CONSTITUTING THE UPPER AND LOWER PHASES, THE FLOW OF THE LOWER PHASE BEING COUNTER-CURRENT TO THE LONGITUDINAL MOVEMENT OF THE AFORESAID ARTICLES THROUGH THE BATH.
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) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |