US3257086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tension equalizing control system
Assignee: Individual
•
Filing: 1963-08-02
•
Granted: 1966-06-21
•
Expires: 1983-08-02
Abstract
No abstract record available.
Inventors
- 👤 John W Drenning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:58
CPC Classifications
B; B65; B65H; B65H59/00; B65H59/38; B65H59/384; B65H59/388; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
APPARATUS FOR TENSION EQUALIZING CONTROL SYSTEM FOR FEEDING LINEAR MATERIAL FROM A SPIRAL SUPPLY COMPRISING: MEANS FOR SUPPORTING A SPIRAL SUPPLY OF MATERIAL FOR ROTATION UNDER FEED OF SAID MATERIAL FROM THE SUPPLY, CIRCUIT MEANS FOR GENERATING AN ELECTRIC SIGNAL VARYING PROPORTIONALLY WITH THE SPEED OF ROTATION OF SAID SUPPLY; BRAKE MEANS COUPLED TO SAID SUPPLY AND HAVING ELECTRICALLY RESPONSIVE CONTROL MEANS, SAID BRAKE MEANS BEING OPERATIVE TO CONSTRAIN SAID SUPPLY FROM ANY ROTATION UPON ENERGIZATION OF ITS CONTROL MEANS IN THE ABSENCE OF FEED; CIRCUIT MEANS FOR SUPPLYING AN ELECTRIC SIGNAL VARYING PROPORTIONALLY WITH THE LINEAR SPEED OF SAID MATERIAL UNDER FEED; AND RATIO CIRCUIT MEANS OPERATIVE RESPONSIVELY ONLY TO BOTH SAID CIRCUIT MEANS TO SUPPLY A CONTROL SIGNAL TO THE ELECTRICALLY RESPONSIVE BRAKE CONTROL MEANS TO MAINTAIN CONTANT MATERIAL TENSION BY DECREASING THE BRAKE TORQUE ON THE SUPPLY AS MATERIAL IS FED OFF AND INCLUDING MEANS FOR MAINTAINING SAID CONTROL SIGNAL AT ITS EFFECTIVE VALVE AS AND AFTER FEED OF THE MATERIAL IS STOPPED.
Claim 2
Dependent Claim
166 words
APPARATUS FOR TENSION EQUALIZING CONTROL SYSTEM FOR FEEDING LINEAR MATERIAL FROM A SPIRAL SUPPLY COMPRISING: MEANS FOR SUPPORTING A SPIRAL SUPPLY OF MATERIAL FOR ROTATION UNDER FEED OF SAID MATERIAL FROM THE SUPPLY, CIRCUIT MEANS FOR GENERATING AN ELECTRIC SIGNAL VARYING PROPORTIONALLY WITH THE SPEED OF ROTATION OF SAID SUPPLY; BRAKE MEANS COUPLED TO SAID SUPPLY AND HAVING ELECTRICALLY RESPONSIVE CONTROL MEANS, SAID BRAKE MEANS BEING OPERATIVE TO CONSTRAIN SAID SUPPLY FROM ANY ROTATION UPON ENERGIZATION OF ITS CONTROL MEANS IN THE ABSENCE OF FEED; CIRCUIT MEANS FOR SUPPLYING AN ELECTRIC SIGNAL VARYING PROPORTIONALLY WITH THE LINEAR SPEED OF SAID MATERIAL UNDER FEED; AND RATIO CIRCUIT MEANS OPERATIVE RESPONSIVELY ONLY TO BOTH SAID CIRCUIT MEANS TO SUPPLY A CONTROL SIGNAL TO THE ELECTRICALLY RESPONSIVE BRAKE CONTROL MEANS TO MAINTAIN CONTANT MATERIAL TENSION BY DECREASING THE BRAKE TORQUE ON THE SUPPLY AS MATERIAL IS FED OFF AND INCLUDING MEANS FOR MAINTAINING SAID CONTROL SIGNAL AT ITS EFFECTIVE VALVE AS AND AFTER FEED OF THE MATERIAL IS STOPPED.
References Cited (Backward Citations)
US2011371A
Cited
US2339939A
Cited
US2469706A
Cited
US2975991A
Cited
US2995968A
Cited
US3018978A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |