Patent US2066194A successfully refreshed from Google Patents.
US3678142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for permanently crimping yarn and the like
Assignee: Individual
•
Filing: 1970-06-25
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Granted: 1972-07-18
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Expires: 1990-06-25
Abstract
Abstract The beam from a laser is caused to traverse either continuously or periodically along the length of a filament, thread, yarn, ribbon, or the like, while the same is under tension. The arrangement is such as to develop a temperature gradient through the element in a transverse direction relative to its longitudinal axis, wherever the laser beam impinges, for developing differential relaxation of stresses therein and to impart a crimp thereto.
Inventors
- 👤 Paul Dubach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:23
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/004; D02G1/006
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
12 words
A process according to claim 1, wherein said beam is generated continually.
Claim 2
Dependent Claim
41 words
A process according to claim 2, wherein said element is propelled longitudinally and under tension across the path of said beam causing the point of impingement of said beam to travel in a continuous manner along the length of said element.
Claim 3
Dependent Claim
41 words
A process according to claim 2, wherein said element is propelled both longitudinally and laterally and under tension to periodically intercept the path of said beam to create said temperature gradient at zones spaced apart along the length of the element.
Claim 4
Dependent Claim
53 words
A process according to claim 2, wherein said element is propelled in a longitudinal direction and under tension while said beam is oscillated back and forth across the path of said element to periodically impinge upon said element and create said temperature gradient at zones spaced apart along the length of the element.
Claim 5
Dependent Claim
39 words
A process according to claim 1, wherein said beam is generated intermittently while said element is propelled longitudinally and under tension across its path to create said temperature gradient at zones spaced apart along the length of the element.
Claim 6
Dependent Claim
21 words
A process according to claim 1, further comprising the step of heating said element before causing said beam to impinge thereon.
Claim 7
Dependent Claim
21 words
A process according to claim 7, further comprising the step of cooling said element after causing said beam to impinge thereon.
Claim 8
Dependent Claim
21 words
A process according to claim 1, further comprising the step of cooling said element after causing said beam to impinge thereon.
Claim 9
Dependent Claim
25 words
A process according to claim 1, further comprising the step of rotating said element about its axis as said beam is caused to impinge thereon.
Claim 10
Dependent Claim
26 words
A process according to claim 1, further comprising the step of subjecting the element to a subsequent heat treatment after developing said differential relaxation of stresses.
Claim 11
Dependent Claim
38 words
A process according to claim 1, wherein said element is selected having a degree of molecular orientation due to partial cold stretching and is subjected to additional cold drawing during or after causing said beam to impinge thereon.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |