Patent US1330342A successfully refreshed from Google Patents.
US3287784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crimping method and apparatus
Assignee: Celanese Corp
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Filing: 1965-12-29
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Granted: 1966-11-29
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Expires: 1985-12-29
Abstract
No abstract record available.
Inventors
- 👤 Robert J Loftin
- 👤 Richard S Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:18
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/02; A24D3/0204; D; D02; D02G; D02G1/00; D02G1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
APPARATUS FOR CRIMPING FIBROUS MATERIAL COMPRISING: (A) PAIR OF SPACED APART PLATES HAVING FIRST SURFACES OPPOSED TO ONE ANOTHER AND BEING SUBSTANTIALLY PARALLEL, SAID PLATE SURFACES DEFINING A CONFINED ZONE HAVING A FIRST END AND A SECOND END AND HAVING A WIDTH SUBSTANTIALLY GREATER THAN ITS HEIGHT; AND (B) A PAIR OF SPACED-APART RIGHT CYLINDRICAL ROLLS OPERATING AT FIRST AND SECOND SPEEDS HAVING THEIR AXES PARALLEL TO ONE ANOTHER AND COOPERATING WITH SAID FIRST AND SECOND ENDS OF SAID ZONE TO FORCE SAID FIBROUS MATERIAL INTO SAID ZONE AND TO RETARD ITS EXIT FROM SAID ZONE WHEREBY SAID FIBROUS MATERIAL IS CAUSED TO FORM CRIMPS THEREIN, SAID ROLLS BEING ARRANGED WITH RESPECT TO SAID ZONE SO THAT AN IMAGINARY PLANE PASSING THROUGH THE ROLL CENTERS FORMS AN ANGLE OF BETWEEN ABOUT 10 DEGREES AND 60 DEGREES WITH AN IMAGINARY PLANE PARALLEL TO THE SAID PLATE SURFACES AND PASSING THROUGH THE CENTER OF SAID ZONE.
Claim 2
Dependent Claim
154 words
APPARATUS FOR CRIMPING FIBROUS MATERIAL COMPRISING: (A) PAIR OF SPACED APART PLATES HAVING FIRST SURFACES OPPOSED TO ONE ANOTHER AND BEING SUBSTANTIALLY PARALLEL, SAID PLATE SURFACES DEFINING A CONFINED ZONE HAVING A FIRST END AND A SECOND END AND HAVING A WIDTH SUBSTANTIALLY GREATER THAN ITS HEIGHT; AND (B) A PAIR OF SPACED-APART RIGHT CYLINDRICAL ROLLS OPERATING AT FIRST AND SECOND SPEEDS HAVING THEIR AXES PARALLEL TO ONE ANOTHER AND COOPERATING WITH SAID FIRST AND SECOND ENDS OF SAID ZONE TO FORCE SAID FIBROUS MATERIAL INTO SAID ZONE AND TO RETARD ITS EXIT FROM SAID ZONE WHEREBY SAID FIBROUS MATERIAL IS CAUSED TO FORM CRIMPS THEREIN, SAID ROLLS BEING ARRANGED WITH RESPECT TO SAID ZONE SO THAT AN IMAGINARY PLANE PASSING THROUGH THE ROLL CENTERS FORMS AN ANGLE OF BETWEEN ABOUT 10 DEGREES AND 60 DEGREES WITH AN IMAGINARY PLANE PARALLEL TO THE SAID PLATE SURFACES AND PASSING THROUGH THE CENTER OF SAID 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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |