US3363409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary tube for crimping filamentary synthetic fibers by imparting thereto a false twist
Assignee: IHO Holding GmbH and Co KG
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Filing: 1965-01-29
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Granted: 1968-01-16
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Expires: 1985-01-29
Abstract
Abstract A false-twist tube has the twist imparting means, for example a pin, located substantially midway between the ends of the tube, there being a transverse aperture or bore to enable the yarn which is to be false twisted to be passed about the pin. The tube is provided with a central portion of larger diameter than the rest of the tube and which is magnetically urged against the driving discs. The central portion may be formed integrally with the rest of the tube, or tubular portions of tool steel may be press-fitted in a central portion of alloy steel.
Inventors
- 👤 Schwabe Kurt
- 👤 Lang Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:28
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/04; D02G1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
AN APPARATUS FOR TWISTING YARN COMPRISING AN ARMATURE BODY HAVING A LONGITUDINALLY EXTENDING BORE THROUGH WHICH THE YARN PASSES AND A TRANSVERSELY EXTENDING BORE LOCATED SUBSTANTIALLY EQUIDISTANT FROM THE ENDS OF SAID BODY; AND A YARN RETAINING MEMBER DISPOSED IN SAID TRANSVERSELY EXTENDING BORE AND EXTENDING AT RIGHT ANGLES TO EACH OF SAID BORES, SAID MEMBER BEING ADAPTER TO RECEIVE SAID YARN TO FIX SAME WITH RESPECT TO SAID ARMATURE BODY SO THAT UPON ROTATION OF SAID BODY ABOUT ITS LONGITUDINAL AXIS, A TWIST WILL BY IMPARTED TO SAID YARN.
Claim 2
Independent Claim
90 words
AN APPARATUS FOR TWISTING YARN COMPRISING AN ARMATURE BODY HAVING A LONGITUDINALLY EXTENDING BORE THROUGH WHICH THE YARN PASSES AND A TRANSVERSELY EXTENDING BORE LOCATED SUBSTANTIALLY EQUIDISTANT FROM THE ENDS OF SAID BODY; AND A YARN RETAINING MEMBER DISPOSED IN SAID TRANSVERSELY EXTENDING BORE AND EXTENDING AT RIGHT ANGLES TO EACH OF SAID BORES, SAID MEMBER BEING ADAPTER TO RECEIVE SAID YARN TO FIX SAME WITH RESPECT TO SAID ARMATURE BODY SO THAT UPON ROTATION OF SAID BODY ABOUT ITS LONGITUDINAL AXIS, A TWIST WILL BY IMPARTED TO SAID YARN.
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Cited
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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) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |