US3241785A
Expired / Lapsed
US
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Apparatus and process for winding under varying tension
Assignee: EIDP Inc
•
Filing: 1964-01-07
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Granted: 1966-03-22
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Expires: 1984-01-07
Abstract
No abstract record available.
Inventors
- 👤 Edward F Barrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:52
CPC Classifications
B; B65; B65H; B65H23/00; B65H23/04; B65H23/18; B65H23/195; B65H23/1955; G; G03; G03B; G03B21/00; G03B21/14; G03B21/32; G03B21/43; Y; Y10; Y10S; Y10S242/00; Y10S242/912
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
114 words
AN APPARATUS FOR WINDING A WEB OF A PREDETERMINED LENGTH WHILE CHANGING THE TENSION UPON THE WEB WHICH COMPRISES (A) A MOTOR; (B) A WINDUP MANDREL FOR SAID WEB DRIVEN BY SAID MOTOR; (C) PROGRAMMED MEANS FOR ISSUING A SIGNAL CORRESPONDING TO THE DESIRED TENSION TO BE EXERTED UPON SAID WEB BASED UPON THE LENGTH OF SAID WEB WHICH HAS BEEN WOUND ON SAID MANDREL; (D) TENSION DETECTOR MEANS FOR ISSUING A SIGNAL FOR THE ACTUAL TENSION UPON SAID WEB; AND (E) CONTROL MEANS FOR COMPARING SAID PROGRAMMED AND DETECTOR SIGNALS AND ISSUING A CORRECTIVE SIGNAL FOR ANY DIFFERENCE BETWEEN SAID SIGNALS, SAID CORRECTIVE SIGNAL EFFECTING A CHANGE IN THE OUTPUT OF SAID MOTOR.
References Cited (Backward Citations)
US2353408A
Cited
US2978200A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |