US3753275A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Draw-crimping textile film strands
Assignee: Individual
•
Filing: 1971-03-15
•
Granted: 1973-08-21
•
Expires: 1991-03-15
Abstract
Abstract Drawable textile film strands are treated by drawing the same to increased length and compressively crimping the drawn material, both steps being carried out in essentially continuous manner with a minimum of time and space therebetween.
Inventors
- 👤 R Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:53
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/225; B; B65; B65H; B65H57/00; B65H57/12; B65H59/00; B65H59/10; D02G; D02G1/00; D02G1/12; D02G1/16; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
50 words
Continuous draw-crimping process for textile film strands, comprising forwarding a textile film strand, tensioning the strand sufficiently to draw it to increased length in a drawing step, maintaining the drawn strand under tension by underfeeding it to a crimping step, and stuffer-crimping the so tensioned strand in the crimping step.
Claim 2
Dependent Claim
50 words
Continuous draw-crimping process for textile film strands, comprising forwarding a textile film strand, tensioning the strand sufficiently to draw it to increased length in a drawing step, maintaining the drawn strand under tension by underfeeding it to a crimping step, and stuffer-crimping the so tensioned strand in the crimping step.
Claim 3
Dependent Claim
19 words
Draw-crimping process according to claim 1, wherein a plurality of such strands are drawn together in the drawing step.
Claim 4
Dependent Claim
19 words
Draw-crimping process according to claim 1, wherein a plurality of such strands are stuffer-crimped together in the crimping step.
Claim 5
Dependent Claim
27 words
Draw-crimping process according to claim 1, wherein a plurality of such strands are drawn side-by-side in the drawing step and are stuffer-crimped together in the crimping step.
Claim 6
Dependent Claim
35 words
Draw-crimping process according to claim 1, wherein the strand is underfed from the drawing step to the crimping step under tension sufficient to extend the strand but insufficient to draw it to permanently increased length.
Claim 7
Dependent Claim
35 words
Draw-crimping process according to claim 1, wherein the strand is underfed from the drawing step to the crimping step under tension sufficiEnt to extend the strand and thereby to draw it to permanently increased length.
Claim 8
Dependent Claim
67 words
Continuous draw-crimping process for textile film strands comprising tensioning a plurality of drawable textile film strands and thereby simultaneously drawing them to increased length in a drawing step, forwarding the drawn strands directly to a stuffer-crimping step, and simultaneously stuffer-crimping them in such step, wherein the strands are underfed from the drawing step to the crimping step and are thereby subjected to an increase in tension therebetween.
Claim 9
Dependent Claim
67 words
Continuous draw-crimping process for textile film strands comprising tensioning a plurality of drawable textile film strands and thereby simultaneously drawing them to increased length in a drawing step, forwarding the drawn strands directly to a stuffer-crimping step, and simultaneously stuffer-crimping them in such step, wherein the strands are underfed from the drawing step to the crimping step and are thereby subjected to an increase in tension therebetween.
Claim 10
Dependent Claim
22 words
Draw-crimping process according to claim 7, wherein the strands are heated for drawing and are maintained in such heated condition for stuffer-crimping.
Claim 11
Dependent Claim
80 words
Draw-crimping process for textile film strands comprising forwarding a multifilament strand comprising at least one textile film strand to a drawing zone and therefrom to a crimping zone, drawing the strand to increased length and thereby orienting it in the drawing zone, feeding the strand into the crimping zone at a rate higher than the rate at which it was forwarded out of the drawing zone, and then longitudinally compressing the strand and thereby crimping it in the crimping zone.
Claim 12
Dependent Claim
80 words
Draw-crimping process for textile film strands comprising forwarding a multifilament strand comprising at least one textile film strand to a drawing zone and therefrom to a crimping zone, drawing the strand to increased length and thereby orienting it in the drawing zone, feeding the strand into the crimping zone at a rate higher than the rate at which it was forwarded out of the drawing zone, and then longitudinally compressing the strand and thereby crimping it in the crimping zone.
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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) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |