US3835513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Draw crimping textile film strands
Assignee: Individual
•
Filing: 1973-02-28
•
Granted: 1974-09-17
•
Expires: 1993-02-28
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
2026-10-30 12:11
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
36 words
Continuous draw-crimping process for textile film strands, comprising the sequentially contiguous steps of tensioning a multiplicity of drawable textile film strands and thereby drawing them simultaneously to increased length and then compressively crimping the drawn strands.
Claim 2
Dependent Claim
36 words
Continuous draw-crimping process for textile film strands, comprising the sequentially contiguous steps of tensioning a multiplicity of drawable textile film strands and thereby drawing them simultaneously to increased length and then compressively crimping the drawn strands.
Claim 3
Dependent Claim
15 words
Draw-crimping process according to claim 1, including the step of preheating the strands for drawing.
Claim 4
Dependent Claim
26 words
Draw-crimping process according to claim 2, including maintaining the strands hot during the drawing step and to at least the beginning of the contiguous crimping step.
Claim 5
Dependent Claim
21 words
Draw-crimping process according to claim 3, wherein the strands are maintained at essentially constant temperature from preheating until assuming crimped configuration.
Claim 6
Dependent Claim
51 words
Process comprising slitting a polymeric film sheet into a multiplicity of textile film strands, tensioning the strands and thereby drawing them simultaneously to increase length in a drawing zone, forwarding the drawn strands to a contiguous compressive crimping zone and crimping them simultaneously in a crimping step in the crimping zone.
Claim 7
Dependent Claim
51 words
Process comprising slitting a polymeric film sheet into a multiplicity of textile film strands, tensioning the strands and thereby drawing them simultaneously to increase length in a drawing zone, forwarding the drawn strands to a contiguous compressive crimping zone and crimping them simultaneously in a crimping step in the crimping zone.
Claim 8
Dependent Claim
23 words
Draw-crimping process according to claim 5, wherein all the strands are drawn by a given set of draw rolls in the drawing zone.
Claim 9
Dependent Claim
21 words
Draw-crimping process according to claim 5, wherein all the strands are crimped by a given stuffer crimper in the crimping zone.
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) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |