US3726073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined twist tube and friction spindle and process
Assignee: Heberlein and Co AG
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Filing: 1971-05-28
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Granted: 1973-04-10
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Expires: 1991-05-28
Abstract
Abstract False-twist device for treating yarn that has been textured by means including a twist tube positioned in the throat between two axially parallel rollers, wherein one of the rollers is formed with an axial bore with friction members in the bore, the yarn being directed through the bore and in contact with the friction members after leaving the twist tube, and process for treating the yarn.
Inventors
- 👤 O Stutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:51
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/0206; D02G1/0226; D02G1/0266
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
112 words
Process for compensating internal tensions in a yarn which has been textured by temporary high-twisting and heat-setting in the high-twisted condition by imparting to the yarns a further temporary high twist without heat-setting in opposite direction, characterized in that both high-twisting treatments are effected by means of a combined false-twisting device comprising a twist tube and a friction twist imparter, the yarn being first passed through the twist tube and then over deviation members and through the friction twist imparter so that false-twist in the opposite direction is produced, and stretching the yarn by an amount of the order of 1 to 10 percent while it passes through the friction twist imparter.
Claim 2
Dependent Claim
112 words
Process for compensating internal tensions in a yarn which has been textured by temporary high-twisting and heat-setting in the high-twisted condition by imparting to the yarns a further temporary high twist without heat-setting in opposite direction, characterized in that both high-twisting treatments are effected by means of a combined false-twisting device comprising a twist tube and a friction twist imparter, the yarn being first passed through the twist tube and then over deviation members and through the friction twist imparter so that false-twist in the opposite direction is produced, and stretching the yarn by an amount of the order of 1 to 10 percent while it passes through the friction twist imparter.
Claim 3
Dependent Claim
117 words
False-twist device for compensating internal tensions in a yarn which has been textured by temporary high-twisting and heat-setting in the high-twisted condition with a twist tube (16) lying in the throat between two axially parallel rollers (10, 11) in tangential contact with the rollers, one of the rollers being driven and the twist tube being pressed against the rollers b means of a magnet, characterized in that one of the rollers (10) is formed with an axial bore (28) and friction members (31, 32) and in that delivery means (7, 7'', 7'''', 7'''''') are provided for deviating the yarn leaving the twist tube and for passing the same through the bore under pressure against the friction members.
Claim 4
Dependent Claim
117 words
False-twist device for compensating internal tensions in a yarn which has been textured by temporary high-twisting and heat-setting in the high-twisted condition with a twist tube (16) lying in the throat between two axially parallel rollers (10, 11) in tangential contact with the rollers, one of the rollers being driven and the twist tube being pressed against the rollers b means of a magnet, characterized in that one of the rollers (10) is formed with an axial bore (28) and friction members (31, 32) and in that delivery means (7, 7'', 7'''', 7'''''') are provided for deviating the yarn leaving the twist tube and for passing the same through the bore under pressure against the friction members.
Claim 5
Dependent Claim
30 words
Apparatus according to claim 2, characterized in that at least one of the friction members is formed of a material with a high friction coefficient with respect to the yarn.
Claim 6
Dependent Claim
21 words
Apparatus according to claim 2, characterized in that friction meMbers of various thicknesses are exchangeably insertable in the friction twist imparter.
Claim 7
Dependent Claim
31 words
Apparatus according to claim 2, characterized in that separately drivable delivery means are provided for introducing the yarn into the bore (28) and for evacuation of the yarn from the same.
References Cited (Backward Citations)
US3403566A
Cited
US3516240A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |