US3963229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for manipulating yarns
Assignee: Rueti Te Strake BV
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Filing: 1973-12-20
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Granted: 1976-06-15
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Expires: 1993-12-20
Abstract
Abstract A device for manipulating yarns, comprises a part movable between an operative and an inoperative position, which cooperates with an electric coil according to the principle of "magnetic pressure".
Inventors
- 👤 Adrianus Henricus van Duynhoven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:43
CPC Classifications
D; D03; D03D; D03D47/00; D03D47/12; D03D47/125; D03J; D03J1/00; Y; Y10; Y10T; Y10T83/00; Y10T83/748; Y10T83/7487; Y10T83/869; Y10T83/8765; Y10T83/8768
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A device for high speed manipulation of yarn, comprising a movable yarn-clamping jaw that is movably mounted for movement between an inoperative position and an operative position, wherein the improvement comprises an electric coil mounted adjacent to the inoperative position of said jaw, and a body of conducting, nonmagnetic material mounted on said jaw which approaches most closely to said coil when said jaw is in its inoperative positive, and in which eddy currents are induced by a pulse of current passed through said coil, to repel said jaw away from said coil toward its operative position, said yarn-clamping jaw also carrying an armature of magnetic material, and an electromagnet coil being mounted in a position which is most closely approached by said armature when said jaw is in its operative position, and which when energized maintains said jaw in its operative position.
Claim 2
Independent Claim
143 words
A device for high speed manipulation of yarn, comprising a movable yarn-clamping jaw that is movably mounted for movement between an inoperative position and an operative position, wherein the improvement comprises an electric coil mounted adjacent to the inoperative position of said jaw, and a body of conducting, nonmagnetic material mounted on said jaw which approaches most closely to said coil when said jaw is in its inoperative positive, and in which eddy currents are induced by a pulse of current passed through said coil, to repel said jaw away from said coil toward its operative position, said yarn-clamping jaw also carrying an armature of magnetic material, and an electromagnet coil being mounted in a position which is most closely approached by said armature when said jaw is in its operative position, and which when energized maintains said jaw in its operative position.
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) | 1979-06-15 | 1979-12-15 | 1980-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-15 | 1983-12-15 | 1984-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-15 | 1987-12-15 | 1988-06-15 | $7700.00 | Window Closed / Lapsed |