Defensive publication
Abstract
Abstract AN IMPROVED ELECTRON-MECHANICAL THREADLINE-TENSOMETER THAT GIVES AN INDICATED TENSION THAT IS LARGELY INDEPENDENT OF THE ERROR ANGLE BETWEEN THE CALIBRATION POSITION AND THE ACTUAL POSITION OF THE TENSOMETER IN USE, IS PROVIDED BY HAVING AT LEAST ONE PAIR OF CONVENTIONAL STRIPCANTILEVER TENSOMETER HEADS MOUNTED PERPENDICULAR TO EACH OTHER. IN THE MOST PREFERRED EMBODIMENT THE AXES OF HEADS ARE MERELY PARALLEL RATHER THAN BEING IN-LINE, AND THE CALIBRATION POSITION IS SUCH THAT THE CALIBRATING LOAD CAUSES EQUAL DEFLECTION IN EACH OF THE STRIP CANTILEVERS. THE PERCENTAGE ERROR IN INDICATED TENSION, CAUSED BY AN ERROR ANGLE OF $ IN POSITIONING THE TENSOMETER IN ACTUAL USE, IS LESS THAN 0.5% FOR $ OF $5*; LESS THAN 1.5% FOR $ OF $10*; AND LESS THAN 3.5% FOR $ OF $15*.
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Bibliographic Details
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |