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US3262840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for removing liquids from fibrous articles using a porous polyamide body
Assignee: Arthur D Little Inc
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Filing: 1963-09-20
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Granted: 1966-07-26
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Expires: 1983-09-20
Abstract
No abstract record available.
Inventors
- 👤 Laurence R B Hervey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:26
CPC Classifications
D; D06; D06B; D06B15/00; D06B15/02; D21; D21F; D21F3/00; D21F3/02; D21F3/10; D21F3/105
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
A METHOD OF REDUCING THE LIQUID CONTENT OF A WET FIBROUS ARTICLE, COMPRISING THE STEPS OF (A) CONTACTING, WITH THE APPLICATION OF PRESSURE, THE SURFACE OF A WET FIBROUS ARTICLE WITH A POROUS, RESILIENT, POLYAMIDE BODY HAVING A DEGREE OF POROSITY OF AT LEAST 15 PERCENT, THE PORES OF SAID POLYAMIDE BODY BEING CAPILLARY IN SIZE AND ON AN AVERAGE SMALLER THAN THOSE OF SAID FIBROUS ARTICLE; (B) BREAKING THE CONTACT BETWEEN SAID FIBROUS ARTICLE AND SAID POROUS RESIN BODY WHEREBY A PORTION OF SAID LIQUID IN SAID ARTICLE IS TRANSFERRED TO SAID POROUS RESIN BODY; AND (C) REMOVING SAID LIQUID FROM SAID POROUS RESIN BODY TRANSFERRED TO IT FROM SAID WET FIBROUS ARTICLE.
Claim 2
Independent Claim
114 words
A METHOD OF REDUCING THE LIQUID CONTENT OF A WET FIBROUS ARTICLE, COMPRISING THE STEPS OF (A) CONTACTING, WITH THE APPLICATION OF PRESSURE, THE SURFACE OF A WET FIBROUS ARTICLE WITH A POROUS, RESILIENT, POLYAMIDE BODY HAVING A DEGREE OF POROSITY OF AT LEAST 15 PERCENT, THE PORES OF SAID POLYAMIDE BODY BEING CAPILLARY IN SIZE AND ON AN AVERAGE SMALLER THAN THOSE OF SAID FIBROUS ARTICLE; (B) BREAKING THE CONTACT BETWEEN SAID FIBROUS ARTICLE AND SAID POROUS RESIN BODY WHEREBY A PORTION OF SAID LIQUID IN SAID ARTICLE IS TRANSFERRED TO SAID POROUS RESIN BODY; AND (C) REMOVING SAID LIQUID FROM SAID POROUS RESIN BODY TRANSFERRED TO IT FROM SAID WET FIBROUS ARTICLE.
Claim 3
Dependent Claim
82 words
IN A METHOD OF TREATING, FABRIC WHICH INCLUDES THE STEPS OF IMPREGNATING SAID FABRIC WITH A LIQUID AND THE SUBSEQUENT REMOVAL OF SAID LIQUID FROM SAID FABRIC, THE STEP OF CONTACTING UNDER PRESSURE THE LIQUID-TREATED FABRIC WITH A POROUS, RESILIENT, POLYAMIDE SURFACE HAVING A DEGREE OF POROSITY OF AT LEAST 15 PERCENT, THE PORES OF SAID POLYAMIDE SURFACE BEING CAPILLARY IN SIZE AND ON AN AVERAGE SMALLER THAN THOSE OF SAID FABRIC THEREBY REMOVING A PORTION OF SAID LIQUID FROM SAID FABRIC.
Claim 4
Dependent Claim
82 words
IN A METHOD OF TREATING, FABRIC WHICH INCLUDES THE STEPS OF IMPREGNATING SAID FABRIC WITH A LIQUID AND THE SUBSEQUENT REMOVAL OF SAID LIQUID FROM SAID FABRIC, THE STEP OF CONTACTING UNDER PRESSURE THE LIQUID-TREATED FABRIC WITH A POROUS, RESILIENT, POLYAMIDE SURFACE HAVING A DEGREE OF POROSITY OF AT LEAST 15 PERCENT, THE PORES OF SAID POLYAMIDE SURFACE BEING CAPILLARY IN SIZE AND ON AN AVERAGE SMALLER THAN THOSE OF SAID FABRIC THEREBY REMOVING A PORTION OF SAID LIQUID FROM SAID FABRIC.
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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) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |