US3150860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tension control device
Assignee: Ling Temco Vought Inc
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Filing: 1962-07-13
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Granted: 1964-09-29
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Expires: 1982-07-13
Abstract
No abstract record available.
Inventors
- 👤 Roy A Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:50
CPC Classifications
B; B66; B66D; B66D1/00; B66D1/28; B66D1/40; B66D1/48; B66D2700/00; B66D2700/01; B66D2700/0108
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
244 words
A CABLE TENSION CONTROL DEVICE COMPRISING: A PNEUMATIC ACTUATOR HAVING A BARREL WITH A FIRST, CLOSED END AND A SECOND END, A PISTON SLIDABLY MOUNTED IN THE BARREL, AND A PISTON ROD EXTENDING THROUGH THE BARREL SECOND END; MEANS ATTACHING THE ROD TO A VARYING LOAD WHICH TENDS TO CAUSE THE PISTON TO OSCILLATE TO EACH SIDE OF A DESIRED NEUTRAL, MEAN POSITION INTERMEDIATE THE ENDS OF THE CYLINDER AND WHICH IMPOSES ON THE PISTON AN AVERAGE FORCE WHICH TENDS TO URGE THE PISTON AWAY FROM THE DESIRED NEUTRAL, MEAN POSITION; A CLOSED TANK HAVING COMMUNICATION WITH THE INTERIOR OF THE CLOSED END OF THE CYLINDER; AND MEANS REGULATING AVERAGE AIR PRESSURE IN THE TANK TO A PRESSURE EXACTLY NEUTRALIZING THE AVERAGE FORCE IMPOSED BY THE LOAD AND MAINTAINING THE PISTON IN SAID NEUTRAL, MEAN POSITION THE LAST-NAMED MEANS COMPRISING: A SOURCE OF COMPRESSED AIR; A VALVE INTERPOSED BETWEEN THE AIR SOURCE AND TANK AND HAVING A FIRST POSITION IN WHICH IT CONNECTS THE TANK WITH THE AIR SOURCE AND A SECOND POSITION IN WHICH IT CONNECTS THE TANK WITH THE ATMOSPHERE; AND MEANS PLACING THE VALVE IN ITS FIRST POSITION IMMEDIATELY UPON THE PISTON PASSING BEYOND SAID DESIRED NEUTRAL, MEAN POSITION TOWARD THE BARREL CLOSED END AND PLACING THE VALVE IN ITS SECOND POSITION IMMEDIATELY UPON THE PISTON PASSING BEYOND SAID DESIRED NEUTRAL, MEAN POSITION TOWARD THE BARREL OTHER END, SAID MEANS COMPRISING A LINKAGE CONNECTED BETWEEN THE PISTON ROD AND THE VALVE.
Claim 2
Dependent Claim
244 words
A CABLE TENSION CONTROL DEVICE COMPRISING: A PNEUMATIC ACTUATOR HAVING A BARREL WITH A FIRST, CLOSED END AND A SECOND END, A PISTON SLIDABLY MOUNTED IN THE BARREL, AND A PISTON ROD EXTENDING THROUGH THE BARREL SECOND END; MEANS ATTACHING THE ROD TO A VARYING LOAD WHICH TENDS TO CAUSE THE PISTON TO OSCILLATE TO EACH SIDE OF A DESIRED NEUTRAL, MEAN POSITION INTERMEDIATE THE ENDS OF THE CYLINDER AND WHICH IMPOSES ON THE PISTON AN AVERAGE FORCE WHICH TENDS TO URGE THE PISTON AWAY FROM THE DESIRED NEUTRAL, MEAN POSITION; A CLOSED TANK HAVING COMMUNICATION WITH THE INTERIOR OF THE CLOSED END OF THE CYLINDER; AND MEANS REGULATING AVERAGE AIR PRESSURE IN THE TANK TO A PRESSURE EXACTLY NEUTRALIZING THE AVERAGE FORCE IMPOSED BY THE LOAD AND MAINTAINING THE PISTON IN SAID NEUTRAL, MEAN POSITION THE LAST-NAMED MEANS COMPRISING: A SOURCE OF COMPRESSED AIR; A VALVE INTERPOSED BETWEEN THE AIR SOURCE AND TANK AND HAVING A FIRST POSITION IN WHICH IT CONNECTS THE TANK WITH THE AIR SOURCE AND A SECOND POSITION IN WHICH IT CONNECTS THE TANK WITH THE ATMOSPHERE; AND MEANS PLACING THE VALVE IN ITS FIRST POSITION IMMEDIATELY UPON THE PISTON PASSING BEYOND SAID DESIRED NEUTRAL, MEAN POSITION TOWARD THE BARREL CLOSED END AND PLACING THE VALVE IN ITS SECOND POSITION IMMEDIATELY UPON THE PISTON PASSING BEYOND SAID DESIRED NEUTRAL, MEAN POSITION TOWARD THE BARREL OTHER END, SAID MEANS COMPRISING A LINKAGE CONNECTED BETWEEN THE PISTON ROD AND THE VALVE.
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) | 1967-09-29 | 1968-03-30 | 1968-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-29 | 1972-03-30 | 1972-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-29 | 1976-03-30 | 1976-09-29 | $7700.00 | Window Closed / Lapsed |