US3306551A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tension device for automatic brake control for web roll stands
Assignee: Individual
•
Filing: 1965-07-21
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Granted: 1967-02-28
•
Expires: 1985-07-21
Abstract
No abstract record available.
Inventors
- 👤 Merrill D Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:23
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/14; F16D65/28; B; B65; B65H; B65H23/00; B65H23/04; B65H23/06; B65H23/063; D; D21; D21G; D21G9/00; D21G9/0009; B65H2403/00; B65H2403/70; B65H2403/72; B65H2403/725; B65H2403/7253
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
IN AN UNWIND STAND FOR CARRYING AND SUPPORTING A WEB ROLL, HAVING A HOLLOW SPOOL, (A) A CARRIAGE INCLUDING (B) A CAB AT ONE END THEREOF, (C) A PAIR OF SPACED LOADING ARMS ON THE CARRIAGE SPACED FROM SAID CAB, (D) ROTATABLE MEANS ON THE LOADING ARMS TO ENGAGE OPPOSITE ENDS OF SAID SPOOL FOR SUPPORTING SAID WEB ROLL, (E) MEANS FOR ADJUSTING SAID LOADING ARMS FOR CLAMPING SAID HOLLOW SPOOL, (F) FLUID ACTUATED MEANS TO RAISE SAID WEB ROLL AND TO SUPPORT SAID WEB ROLL IN RAISED POSITION. (G) A CONTROL VALVE TO SUPPLY FLUID UNDER PRESSURE TO SAID FLUID ACTUATED MEANS, (H) FLUID ACTUATED BRAKE MEANS ON SAID ROTATABLE SPOOL ENGAGING MEANS TO APPLY A PREDETERMINED RESISTANCE TO THE ROTATION OF SAID ROTATABLE MEANS THEREBY TO DETERMINE THE TENSION ON THE WEB DURING THE UNWINDING OF THE WEB ROLL,
Claim 2
Dependent Claim
141 words
IN AN UNWIND STAND FOR CARRYING AND SUPPORTING A WEB ROLL, HAVING A HOLLOW SPOOL, (A) A CARRIAGE INCLUDING (B) A CAB AT ONE END THEREOF, (C) A PAIR OF SPACED LOADING ARMS ON THE CARRIAGE SPACED FROM SAID CAB, (D) ROTATABLE MEANS ON THE LOADING ARMS TO ENGAGE OPPOSITE ENDS OF SAID SPOOL FOR SUPPORTING SAID WEB ROLL, (E) MEANS FOR ADJUSTING SAID LOADING ARMS FOR CLAMPING SAID HOLLOW SPOOL, (F) FLUID ACTUATED MEANS TO RAISE SAID WEB ROLL AND TO SUPPORT SAID WEB ROLL IN RAISED POSITION. (G) A CONTROL VALVE TO SUPPLY FLUID UNDER PRESSURE TO SAID FLUID ACTUATED MEANS, (H) FLUID ACTUATED BRAKE MEANS ON SAID ROTATABLE SPOOL ENGAGING MEANS TO APPLY A PREDETERMINED RESISTANCE TO THE ROTATION OF SAID ROTATABLE MEANS THEREBY TO DETERMINE THE TENSION ON THE WEB DURING THE UNWINDING OF THE WEB ROLL,
References Cited (Backward Citations)
US1383953A
Cited
US2780419A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |