US3071821A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing discontinuous fibers from continuous filaments incident to forming a nonwoven web
Assignee: Crompton and Knowles Corp
•
Filing: 1960-06-10
•
Granted: 1963-01-08
•
Expires: 1980-06-10
Abstract
No abstract record available.
Inventors
- 👤 Thomas T Constantine
- 👤 Richard D Wells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:30
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/70; D04H1/72; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/268; Y10T428/29; Y10T428/2904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
THE METHOD OF PRODUCING A WEB OF INTERTANGLED FIBERS FROM A TOW OF CONTINUOUS FILAMENTS CONSISTING IN THE FOLLOWING STEPS: FEEDING THE LEADING END PORTION OF THE TOW AT A GIVEN LINEAR RATE INTO A FLEXING ZONE, SUBJECTING THE LEADING END PORTION IN THE ZONE TO FRICTIONAL FORCES EXERTED WITHIN THE ZONE ONLY AND DIRECTED AWAY FROM THE POINT OF FEEDING AND AT RATES IN EXCESS OF SAID GIVEN RATE TO RUPTURE THE FILAMENTS IN THE ZONE INTO DISCONTINUOUS FIBERS OF VARIOUS LENGTHS, AND CAUSING THE FIBERS TO BE SEPARATED FROM SAID LEADING END PORTION BY SAID FORCES FOR RANDOM DISTRIBUTION ONTO A MOVING CONVEYOR.
Claim 2
Independent Claim
105 words
THE METHOD OF PRODUCING A WEB OF INTERTANGLED FIBERS FROM A TOW OF CONTINUOUS FILAMENTS CONSISTING IN THE FOLLOWING STEPS: FEEDING THE LEADING END PORTION OF THE TOW AT A GIVEN LINEAR RATE INTO A FLEXING ZONE, SUBJECTING THE LEADING END PORTION IN THE ZONE TO FRICTIONAL FORCES EXERTED WITHIN THE ZONE ONLY AND DIRECTED AWAY FROM THE POINT OF FEEDING AND AT RATES IN EXCESS OF SAID GIVEN RATE TO RUPTURE THE FILAMENTS IN THE ZONE INTO DISCONTINUOUS FIBERS OF VARIOUS LENGTHS, AND CAUSING THE FIBERS TO BE SEPARATED FROM SAID LEADING END PORTION BY SAID FORCES FOR RANDOM DISTRIBUTION ONTO A MOVING CONVEYOR.
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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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |