Method for removing volatile solvents from deep-nap fabrics
Abstract
Abstract THE PRESENT INVENTION RELATES TO A NOVEL METHOD FOR REMOVING VOLATILE SOLVENTS AND/OR CARRIERS FROM DEEPNAP OR DEEP-PILE FABRICS SUCH AS RUGS, CARPETS, VELOURS AND THE LIKE. THE METHOD COMPRISES INTRODUCING A VOLATILE-SOLVENT-WETTED FABRIC INTO A ZONE OF VAPORS OF THE VOLATILE-SOLVENT, CONTACTING THE PILE OR NAP WITH A PLURALITY OF METAL PINES WHICH ARE HEATED, AMINTAINING SAID PINS AT A PREDETERMINED TEMPERATURE AT OR ABOVE THE BOILING POINT OF SAID SOLVENT, MAINTAINING SAID FABRIC PILE AND SAID PINS IN CONTACT FOR A TIME SUFFICIENT TO VAPORIZE THE SOLVENT FROM THE INTERIOR OF SAID PILE, REMOVING SAID PINS FROM CONTACT WITH SAID PILE, AND WITHDRAWING SAID FABRIC FROM SAID ZONE OF VAPORS.
Inventors
- 👤 James L Dunn Jr
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |