Precision threaded adjustment
Abstract
Abstract A HOLLOW ADJUSTING SCREW THREADS IN A HOLE PROVIDED IN ONE OR TWO MEMBERS AND HAS A LOST MOTION CONNECTION WITH A HOLLOW ADJUSTING HEAD BEARING ON AN ANNULAR SHOULDER AT THE UPPER END OF THE HOLE, THIS HEAD HAVING A HOLD-DOWN SCREW EXTENDING THROUGH IT AND THE FIRST NAMED SCREW AND THREADING IN A HOLE PROVIDED IN THE OTHER MEMBER ON WHICH THE LOWER END OF THE FIRST NAMED SCREW SEATS ON A SUITABLE WASHER. THE HEAD ON THE HOLDDOWN SCREW BEARS ON AN ANNULAR SHOULDER IN THE ADJUSTING HEAD AND CLAMPS THE TWO MEMBERS TOGETHER. THE ADJUSTING SCREW AND THE HOLD-DOWN SCREW HAVE THE SAME NUMBER OF THREADS PER INCH BUT OF OPPOSITE HAND SO AFTER THE MEMBERS ARE ROUGTLY ADJUSTED BY MEANS OF THE ADJUSTING HEAD AND ADJUSTING SCREW TO APPROXIMATELY THE DESIRED EXTENT AND THE HOLD-DOWN SCREW IS TIGHTENED ENOUGH TO INSURE ITS TURNING WITH THE ADJUSTING SCREW, ANY FINE ADJUSTMENT THEREAFTER OF THE ADJUSTING SCREW WITH THE ADJUSTING HEAD RESULTS IN THE HOLD-DOWN SCREW TURNING WITH THE OTHER PARTS WITHOUT DISTURBING THE CLAMPING ACTION.
Inventors
- 👤 William B Fell
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |