US3091910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
False-twisting devices for fibres or filaments
Assignee: ZF International UK Ltd
•
Filing: 1961-12-15
•
Granted: 1963-06-04
•
Expires: 1981-12-15
Abstract
No abstract record available.
Inventors
- 👤 Steele Henry Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:15
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/04; D02G1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
A FALSE-TWISTING DIVICE FOR STRANDS IN THE FORM OF FIBRES OR FILAMENTS, COMPRISING IN COMBINATION A ROTATABLE HOLLOW SPINDLE, AN ELONGATED HOLLOW CYLINDRICAL CARRIER WHICH IS MADE OF RESILIENTLY EXPANSIBLE MATERIAL, AND WHICH IS WITHDRAWABLY MOUNTED COAXIALLY WITHIN AN END PORTION OF SAID HOLLOW SPINDLE SO AS TO BE ROTATABLE WITH THE LATTER, AND SO THAT THE STRAND TO BE TWISTED CAN EXTEND LONGITUDINALLY THROUGH THE INTERIORS OF SAID SPINDLE AND SAID CARRIER, AND A MEMBER WHICH IS CARRIED BY, AND EXTENDS AT LEAST IN PART TRANSVERSELY RELATIVE TO, SAID CARRIER SO THAT THE STRAND EXTENDING THROUGH THE INTERIORS OF SAID SPINDLE AND SAID CARRIER CAN PASS AROUND PORTION OF SAID MEMBER, SAID CARRIER NORMALLY HAVING A CLEARANCE BETWEEN AT LEAST THE MAJOR PORTION OF ITS OUTER PERIPHERY AND THE ADJACENT INNER PERIPHERAL PORTION OF SAID SPINDLE SO THAT WHEN THE LATTER IS ROTATED AT A PREDETERMINED SPEED SAID CARRIER WILL BE CENTRIFUGALLY EXPANDED TO PROVIDE AN INTERFERENCE FIT WITHIN SAID SPINDLE, AND THEREBY ENSURE THAT SAID CARRIER IS ROTATABLE AT THE SAME SPEED AS SAID SPINDLE.
Claim 2
Dependent Claim
177 words
A FALSE-TWISTING DIVICE FOR STRANDS IN THE FORM OF FIBRES OR FILAMENTS, COMPRISING IN COMBINATION A ROTATABLE HOLLOW SPINDLE, AN ELONGATED HOLLOW CYLINDRICAL CARRIER WHICH IS MADE OF RESILIENTLY EXPANSIBLE MATERIAL, AND WHICH IS WITHDRAWABLY MOUNTED COAXIALLY WITHIN AN END PORTION OF SAID HOLLOW SPINDLE SO AS TO BE ROTATABLE WITH THE LATTER, AND SO THAT THE STRAND TO BE TWISTED CAN EXTEND LONGITUDINALLY THROUGH THE INTERIORS OF SAID SPINDLE AND SAID CARRIER, AND A MEMBER WHICH IS CARRIED BY, AND EXTENDS AT LEAST IN PART TRANSVERSELY RELATIVE TO, SAID CARRIER SO THAT THE STRAND EXTENDING THROUGH THE INTERIORS OF SAID SPINDLE AND SAID CARRIER CAN PASS AROUND PORTION OF SAID MEMBER, SAID CARRIER NORMALLY HAVING A CLEARANCE BETWEEN AT LEAST THE MAJOR PORTION OF ITS OUTER PERIPHERY AND THE ADJACENT INNER PERIPHERAL PORTION OF SAID SPINDLE SO THAT WHEN THE LATTER IS ROTATED AT A PREDETERMINED SPEED SAID CARRIER WILL BE CENTRIFUGALLY EXPANDED TO PROVIDE AN INTERFERENCE FIT WITHIN SAID SPINDLE, AND THEREBY ENSURE THAT SAID CARRIER IS ROTATABLE AT THE SAME SPEED AS SAID SPINDLE.
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) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |