Patent US6563174B2 successfully refreshed from Google Patents.
Patent US3145945A successfully refreshed from Google Patents.
US3145945A
Expired / Lapsed
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Tension control apparatus
Assignee: Individual
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Filing: 1963-02-15
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Granted: 1964-08-25
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Expires: 1983-02-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Richard Le Baron Bowen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:35
CPC Classifications
B; B65; B65H; B65H59/00; B65H59/38; B65H23/00; B65H23/04; B65H23/06; B65H23/063
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
IN AN UNWINDING APPARATUS, A ROLL OF MATERIAL, MEANS FOR WITHDRAWING SAID MATERIAL, A BRAKE MECHANISM FOR APPLYING A DRAG ON SAID ROLL, A DRIVING CONNECTION BETWEEN SAID ROLL AND SAID BRAKE MECHANISM, A DIFFERENTIAL GEAR TRAIN COMPRISING THREE ROTATABLE POWER TRANSMITTING ELEMENTS, A DRIVING CONNECTION BETWEEN THE FIRST OF SAID ELEMENTS AND SAID MEANS FOR WITHDRAWING SAID MATERIAL, A DRIVING CONNECTION BETWEEN THE SECOND OF SAID ELEMENTS AND SAID ROLL, A FLUID PUMP, A CONTROL VALVE IN THE DISCHARGE OF SAID PUMP FOR PRODUCING BACK PRESSURE, A DRIVING CONNECTION BETWEEN THE THIRD OF SAID ELEMENTS AND SAID FLUID PUMP, AND MEANS WHEREBY THE PRESSURE PRODUCED BY SAID PUMP CONTROLS THE AMOUNT OF DRAG APPLIED BY SAID BRAKING MECHANISM.
Claim 2
Dependent Claim
119 words
IN AN UNWINDING APPARATUS, A ROLL OF MATERIAL, MEANS FOR WITHDRAWING SAID MATERIAL, A BRAKE MECHANISM FOR APPLYING A DRAG ON SAID ROLL, A DRIVING CONNECTION BETWEEN SAID ROLL AND SAID BRAKE MECHANISM, A DIFFERENTIAL GEAR TRAIN COMPRISING THREE ROTATABLE POWER TRANSMITTING ELEMENTS, A DRIVING CONNECTION BETWEEN THE FIRST OF SAID ELEMENTS AND SAID MEANS FOR WITHDRAWING SAID MATERIAL, A DRIVING CONNECTION BETWEEN THE SECOND OF SAID ELEMENTS AND SAID ROLL, A FLUID PUMP, A CONTROL VALVE IN THE DISCHARGE OF SAID PUMP FOR PRODUCING BACK PRESSURE, A DRIVING CONNECTION BETWEEN THE THIRD OF SAID ELEMENTS AND SAID FLUID PUMP, AND MEANS WHEREBY THE PRESSURE PRODUCED BY SAID PUMP CONTROLS THE AMOUNT OF DRAG APPLIED BY SAID BRAKING MECHANISM.
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) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |