Step control
Abstract
Abstract A STEP CONTROL UTILIZING A CONICAL WASHER-SHAPED MEMBER, HAVING A NEGATIVE SPRING RATE, THAT IS ABRUPTLY SNAPPED TO A MORE FLATTENED CONFIGURATION WHEN SUBJECTED TO A FORCE IN EXCESS OF A PREDETERMINED MAGNITUDE. THE CONTROL INCLUDES MEANS FOR TRANSMITTING FORCE TO THE CONICAL MEMBER AND A HOUSING CONNECTING THE CONICAL MEMBER AND TRANSMITTING MEANS AND DEFINING A REACTION SURFACE THEREFOR. THE FORCE TRANSMISSION MEANS EXTENDS THROUGH AN APERTURE IN THE HOUSING FOR REACTION WITH A FORCE-SUPPLYING SURFACE. IN OTHER EMBODIMENTS, A PLURALITY OF SCU STEP CONTROLS ARE DISPOSED IN THE PATH OF MOVEMENT OF A SURFACE TO BE CONTROLLED FOR SUCCESSIVE ABUTMENT WITH SUCH SURFACE EACH STEP CONTROL EFFECTING ABRUPT RELEASE OF SUCH CONTROL SURFACE, UPON APPLICATION OF FORCE THERETO IN EXCESS PREDETERMINED MAGNITUDE. IN STILL OTHER EMBODIMENTS, ONE OR MORE OF SUCH STEP CONTROLS ARE DISPOSED IN THE PATH OF MOVEMENT OF A VALVE CONTROL TO PROVIDE STEP-WISE CHANGE IN THE FLUID FLOW RATE OF THE VALVE.
Inventors
- 👤 Oded E Sturman
- 👤 Salvatore A Sciortino
- 👤 Abdul R Kassir
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) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |