Patent US3139243A successfully refreshed from Google Patents.
US3139243A
Expired / Lapsed
US
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Tension compensating control device
Assignee: Compensating Tension Controls Inc
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Filing: 1962-10-11
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Granted: 1964-06-30
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Expires: 1982-10-11
Abstract
No abstract record available.
Inventors
- 👤 Warwick John
- 👤 Erwin L Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:43
CPC Classifications
B; B65; B65H; B65H59/00; B65H59/02; B65H59/04; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
360 words
IN A TENSION COMPENSATING CONTROL DEVICE, THE COMBINATION OF A SPINDLE FOR A PACKAGE HAVING MATERIAL WOUND THEREON AND BEING MOUNTED FOR ROTATION, A BRAKE DRUM MOUNTED ON SAID SPINDLE AND SECURED THERETO FOR ROTATION THEREWITH, A FIRST EXTENDABLE SPRING HAVING A FIRST END AND A SECOND END, A BRAKE BAND ON SAID BRAKE DRUM HAVING ONE END SECURED TO THE SECOND END OF SAID SPRING, A PIVOTALLY MOUNTED LEVER HAVING A FIRST AND SECOND ARM, SAID FIRST END OF SAID SPRING BEING CONNECTED TO SAID FIRST ARM, A SECOND EXTENDABLE SPRING HAVING A FIXED END AND A SECOND END CONNECTED TO SAID SECOND ARM OF SAID LEVER, WHEREBY AN EXCESSIVE PULL EXERTED BY SAID BRAKE BAND ON SAID FIRST SPRING CAUSES SAID LEVER TO PIVOT IN A DIRECTION TO EFFECT YIELDING OF SAID SECOND SPRING AND TO ESTABLISH A PREDETERMINED MAXIMUM FORCE APPLIED BY SAID BRAKE BAND ON SAID BRAKE DRUM, A STOP FOR LIMITING PIVOTAL MOVEMENT OF SAID LEVER IN THE OPPOSITE DIRECTION, LEVER MEANS PIVOTALLY MOUNTED ADJACENT SAID BRAKE DRUM AND HAVING THE OTHER END OF SAID BRAKE BAND SECURED THERETO FOR VARYING THE BRAKING ACTION OF SAID BAND ON SAID DRUM, A CONTROL MEMBER MOUNTED FOR ROTATION ABOUT AN AXIS PARALLEL TO THE AXIS OF SAID SPINDLE, CAPSTAN MEANS MOUNTED FOR ROTATION WITH SAID CONTROL MEMBER AT THE CENTER THEREOF, A CABLE HAVING ONE END SECURED TO SAID LEVER MEANS AND HAVING ITS OTHER END SECURED TO AND ARRANGED ON SAID CAPSTAN MEANS TO BE WOUND UP THEREON UPON ROTATION OF SAID CONTROL MEMBER IN ONE DIRECTION, GUIDE MEANS FOR THE MATERIAL ON SAID CONTROL MEMBER ENGAGED BY THE MATERIAL AND ARRANGED TO EFFECT ROTATION OF SAID CONTROL MEMBER IN A DIRECTION TO UNWIND SAID CABLE UPON DOWNSTREAM PULLING OF THE MATERIAL AND THEREBY ALLOW SAID LEVER MEANS TO PIVOT IN A DIRECTION TO LESSEN THE BRAKING ACTION OF SAID BAND ON SAID DRUM, AND SPRING MEANS CONNECTED TO SAID CONTROL MEMBER FOR URGING SAID CONTROL MEMBER TO ROTATE IN THE DIRECTION TO CAUSE SAID CABLE TO BE WOUND UP ON SAID CAPSTAN MEANS WHEREBY THE BRAKING ACTION OF SAID BAND ON SAID DRUM IS INCREASED.
Claim 2
Dependent Claim
360 words
IN A TENSION COMPENSATING CONTROL DEVICE, THE COMBINATION OF A SPINDLE FOR A PACKAGE HAVING MATERIAL WOUND THEREON AND BEING MOUNTED FOR ROTATION, A BRAKE DRUM MOUNTED ON SAID SPINDLE AND SECURED THERETO FOR ROTATION THEREWITH, A FIRST EXTENDABLE SPRING HAVING A FIRST END AND A SECOND END, A BRAKE BAND ON SAID BRAKE DRUM HAVING ONE END SECURED TO THE SECOND END OF SAID SPRING, A PIVOTALLY MOUNTED LEVER HAVING A FIRST AND SECOND ARM, SAID FIRST END OF SAID SPRING BEING CONNECTED TO SAID FIRST ARM, A SECOND EXTENDABLE SPRING HAVING A FIXED END AND A SECOND END CONNECTED TO SAID SECOND ARM OF SAID LEVER, WHEREBY AN EXCESSIVE PULL EXERTED BY SAID BRAKE BAND ON SAID FIRST SPRING CAUSES SAID LEVER TO PIVOT IN A DIRECTION TO EFFECT YIELDING OF SAID SECOND SPRING AND TO ESTABLISH A PREDETERMINED MAXIMUM FORCE APPLIED BY SAID BRAKE BAND ON SAID BRAKE DRUM, A STOP FOR LIMITING PIVOTAL MOVEMENT OF SAID LEVER IN THE OPPOSITE DIRECTION, LEVER MEANS PIVOTALLY MOUNTED ADJACENT SAID BRAKE DRUM AND HAVING THE OTHER END OF SAID BRAKE BAND SECURED THERETO FOR VARYING THE BRAKING ACTION OF SAID BAND ON SAID DRUM, A CONTROL MEMBER MOUNTED FOR ROTATION ABOUT AN AXIS PARALLEL TO THE AXIS OF SAID SPINDLE, CAPSTAN MEANS MOUNTED FOR ROTATION WITH SAID CONTROL MEMBER AT THE CENTER THEREOF, A CABLE HAVING ONE END SECURED TO SAID LEVER MEANS AND HAVING ITS OTHER END SECURED TO AND ARRANGED ON SAID CAPSTAN MEANS TO BE WOUND UP THEREON UPON ROTATION OF SAID CONTROL MEMBER IN ONE DIRECTION, GUIDE MEANS FOR THE MATERIAL ON SAID CONTROL MEMBER ENGAGED BY THE MATERIAL AND ARRANGED TO EFFECT ROTATION OF SAID CONTROL MEMBER IN A DIRECTION TO UNWIND SAID CABLE UPON DOWNSTREAM PULLING OF THE MATERIAL AND THEREBY ALLOW SAID LEVER MEANS TO PIVOT IN A DIRECTION TO LESSEN THE BRAKING ACTION OF SAID BAND ON SAID DRUM, AND SPRING MEANS CONNECTED TO SAID CONTROL MEMBER FOR URGING SAID CONTROL MEMBER TO ROTATE IN THE DIRECTION TO CAUSE SAID CABLE TO BE WOUND UP ON SAID CAPSTAN MEANS WHEREBY THE BRAKING ACTION OF SAID BAND ON SAID DRUM IS INCREASED.
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) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |