US3097164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry cleaning process
Assignee: Individual
•
Filing: 1960-01-29
•
Granted: 1963-07-09
•
Expires: 1980-01-29
Abstract
No abstract record available.
Inventors
- 👤 Sebough S Shields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:49
CPC Classifications
D; D06; D06F; D06F43/00; D06F43/08; D06F43/081
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
IN A CLEANING SYSTEM FOR DRY CLEANING IN WHICH CLEANING OPERATIONS ARE NORMALLY AFFECTED BY CIRCULATING CLEANING FLUID FROM A SUMP TO A FILTER TANK AND THENCE TO A CLEANING CHAMBER AND RETURN, THE PROCESS OF RECONDITIONING CONTAMINATED FLUID COMPRISING: (A) PERIODICALLY STOPPING THE NORMAL CIRCULATION OF FLUID FOR CLEANING OPERATIONS AND ALLOWING THE SYSTEM TO STAND IDLE FOR A PERIOD OF TIME THEREBY COLLECTING LIGHTER CONTAMINANTS IN THE FLUID NEAR THE TOP OF THE TANK AND HEAVIER CONTAMINANTS IN THE FLUID NEAR THE BOTTOM OF THE TANK; (B) PERIODICALLY ESTABLISHING A FLOW PATTERN FROM THE TOP OF THE TANK TO A SOLVENT RECONDITIONING STRUCTURE TO DRAW OFF FLUID CONTAMINATED WITH THE COLLECTED LIGHT CONTAMINANTS WHILE THE NORMAL CIRCULATION WAS STOPPED; (C) PERIODICALLY ESTABLISHING A FLOW PATTERN FROM THE BOTTOM OF THE TANK TO THE RECONDITIONING STRUCTURE TO DRAW OFF FLUID CONTAMINATED WITH THE COLLECTED HEAVIER CONTAMINANTS WHILE THE NORMAL CIRCULATION WAS STOPPED; (D) THEREAFTER TREATING THE CONTAMINATED FLUID IN THE RECONDITIONING STRUCTURE TO SEPARATE THE CLEANING FLUID FROM CONTAMINANTS AND THEREBY RECONDITION THE FLUID; AND, (E) THEREAFTER DELIVERING THE RECONDITIONED FLUID TO THE SUMP.
Claim 2
Dependent Claim
185 words
IN A CLEANING SYSTEM FOR DRY CLEANING IN WHICH CLEANING OPERATIONS ARE NORMALLY AFFECTED BY CIRCULATING CLEANING FLUID FROM A SUMP TO A FILTER TANK AND THENCE TO A CLEANING CHAMBER AND RETURN, THE PROCESS OF RECONDITIONING CONTAMINATED FLUID COMPRISING: (A) PERIODICALLY STOPPING THE NORMAL CIRCULATION OF FLUID FOR CLEANING OPERATIONS AND ALLOWING THE SYSTEM TO STAND IDLE FOR A PERIOD OF TIME THEREBY COLLECTING LIGHTER CONTAMINANTS IN THE FLUID NEAR THE TOP OF THE TANK AND HEAVIER CONTAMINANTS IN THE FLUID NEAR THE BOTTOM OF THE TANK; (B) PERIODICALLY ESTABLISHING A FLOW PATTERN FROM THE TOP OF THE TANK TO A SOLVENT RECONDITIONING STRUCTURE TO DRAW OFF FLUID CONTAMINATED WITH THE COLLECTED LIGHT CONTAMINANTS WHILE THE NORMAL CIRCULATION WAS STOPPED; (C) PERIODICALLY ESTABLISHING A FLOW PATTERN FROM THE BOTTOM OF THE TANK TO THE RECONDITIONING STRUCTURE TO DRAW OFF FLUID CONTAMINATED WITH THE COLLECTED HEAVIER CONTAMINANTS WHILE THE NORMAL CIRCULATION WAS STOPPED; (D) THEREAFTER TREATING THE CONTAMINATED FLUID IN THE RECONDITIONING STRUCTURE TO SEPARATE THE CLEANING FLUID FROM CONTAMINANTS AND THEREBY RECONDITION THE FLUID; AND, (E) THEREAFTER DELIVERING THE RECONDITIONED FLUID TO THE SUMP.
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) | 1966-07-08 | 1967-01-07 | 1967-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-08 | 1971-01-07 | 1971-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-08 | 1975-01-07 | 1975-07-09 | $7700.00 | Window Closed / Lapsed |