US3239161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rollstand drive
Assignee: Individual
•
Filing: 1963-12-31
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Granted: 1966-03-08
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Expires: 1983-12-31
Abstract
No abstract record available.
Inventors
- 👤 Orville V Dutro
- 👤 Sherman H Hewson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:06
CPC Classifications
B; B65; B65H; B65H23/00; B65H23/04; B65H23/18; B65H23/182; B65H23/1825; B65H2301/00; B65H2301/30; B65H2301/31; B65H2301/311; B65H2301/3112
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
IN A ROLLSTAND DRIVE ADAPTED TO DRIVE A JOURNALED ROLL OF MATERIAL FOR UNWINDING THE MATERAIAL THEREFROM, A DRIVE FOR THE ROLL COMPRISING: A FLEXIBLE ROLLER HAVING A NORMAL RADIUS WHEN IT IS FREE OF EXTERNAL UNSYMMETRICAL FORCES, SAID RADIUS BEING LOCALLY CHANGEABLE BY UNSYMMETRICAL FORCES EXERTED ON THE PERIPHERY THEREOF; MOVABLE MOUNTING MEANS JOURNALING THE FLEXIBLE ROLLER AND ADAPTED TO MOVE THE FLEXIBLE ROLLER TOWARD AND AWAY FROM THE ROLL OF MATERIAL; FORCE MEANS CONNECTED TO THE MOUNTING MEANS ADAPTED TO MOVE THE MOUNTING MEANS TOWARD THE ROLL WITH A VARIABLE, CONTROLLABLE FORCE; DRIVE MEANS DRIVING THE ROLLER AT A CONSTANT ANGULAR VELOCITY; AND CONTROL MEANS CONTROLLING THE FORCE EXERTED BY THE FORCE MEANS IN RESPONSE TO TENSION IN THE UNWOUND MATERIAL, WHEREBY THE ANGULAR VELOCITY OF THE ROLL OF MATERIAL VARIES WITH THE TANGENTIAL RADIUS OF THE FLEXIBLE ROLLER, WHICH IS A FUNCTION OF THE FORCE EXERTED BY THE FORCE MEANS.
Claim 2
Dependent Claim
153 words
IN A ROLLSTAND DRIVE ADAPTED TO DRIVE A JOURNALED ROLL OF MATERIAL FOR UNWINDING THE MATERAIAL THEREFROM, A DRIVE FOR THE ROLL COMPRISING: A FLEXIBLE ROLLER HAVING A NORMAL RADIUS WHEN IT IS FREE OF EXTERNAL UNSYMMETRICAL FORCES, SAID RADIUS BEING LOCALLY CHANGEABLE BY UNSYMMETRICAL FORCES EXERTED ON THE PERIPHERY THEREOF; MOVABLE MOUNTING MEANS JOURNALING THE FLEXIBLE ROLLER AND ADAPTED TO MOVE THE FLEXIBLE ROLLER TOWARD AND AWAY FROM THE ROLL OF MATERIAL; FORCE MEANS CONNECTED TO THE MOUNTING MEANS ADAPTED TO MOVE THE MOUNTING MEANS TOWARD THE ROLL WITH A VARIABLE, CONTROLLABLE FORCE; DRIVE MEANS DRIVING THE ROLLER AT A CONSTANT ANGULAR VELOCITY; AND CONTROL MEANS CONTROLLING THE FORCE EXERTED BY THE FORCE MEANS IN RESPONSE TO TENSION IN THE UNWOUND MATERIAL, WHEREBY THE ANGULAR VELOCITY OF THE ROLL OF MATERIAL VARIES WITH THE TANGENTIAL RADIUS OF THE FLEXIBLE ROLLER, WHICH IS A FUNCTION OF THE FORCE EXERTED BY THE FORCE MEANS.
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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |