US3248770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crimping apparatus
Assignee: Joseph Bancroft and Sons Co
•
Filing: 1964-01-23
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Granted: 1966-05-03
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Expires: 1984-01-23
Abstract
No abstract record available.
Inventors
- 👤 Ewart H Shattuck
- 👤 John N Hall
- 👤 Wayne A Ellsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:41
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
APPARATUS FOR CRIMPING FILAMENTS AND YARN COMPRISING MEANS FORMING AN ELONGATED CHAMBER HAVING CRIMPING AND SETTING ZONES, FEED MEANS INCLUDING A FEED ROLL AND A COOPERATING ELEMENT HAVING A BITE DISPOSED TO FEED SAID YARN INTO SAID CRIMPING ZONE TO BE FOLDED OVER AND CRIMPED AGAINST THE BACK PRESSURE OF A MASSE OF PREVIOUSLY CRIMPED YARN IN SAID CHAMBER AND TO CAUSE THE MASS OF CRIMPED YARN TO ADVANCE ALONG SAID SETTING ZONE TO A DISCHARGE POINT AND MEANS PERIODICALLY RAISING SAID MASS OF CRIMPED YARN FROM SAID BITE FOR THEREBY REDUCING THE BACK PRESSURE ON THE INCOMING YARN FOR VARYING THE CRIMP LEVEL THEREOF.
Claim 2
Dependent Claim
105 words
APPARATUS FOR CRIMPING FILAMENTS AND YARN COMPRISING MEANS FORMING AN ELONGATED CHAMBER HAVING CRIMPING AND SETTING ZONES, FEED MEANS INCLUDING A FEED ROLL AND A COOPERATING ELEMENT HAVING A BITE DISPOSED TO FEED SAID YARN INTO SAID CRIMPING ZONE TO BE FOLDED OVER AND CRIMPED AGAINST THE BACK PRESSURE OF A MASSE OF PREVIOUSLY CRIMPED YARN IN SAID CHAMBER AND TO CAUSE THE MASS OF CRIMPED YARN TO ADVANCE ALONG SAID SETTING ZONE TO A DISCHARGE POINT AND MEANS PERIODICALLY RAISING SAID MASS OF CRIMPED YARN FROM SAID BITE FOR THEREBY REDUCING THE BACK PRESSURE ON THE INCOMING YARN FOR VARYING THE CRIMP LEVEL THEREOF.
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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |