Pulse actuated speed responsive system
Abstract
Abstract A SYSTEM WHICH CONVERTS SPEED RELATED PULSES DEVELOPED IN A MAGNETIC PICKUP TO A VARIABLE AMPLITUDE DC VOLTAGE TO CONTROL SPEED RESPONSIVE FUNCTIONS. A NOISE FILTER, TRIGGER AND MONOSTABLE MULTIVIBRATOR ELIMINATE INTERFERENCE AND PRODUCE PULSES OF UNIFORM SHAPE AND AT A FREQUENCY THE SAME AS (OR DIRECTLY RELATED TO) TO FREQUENCY OF PULSES FROM THE PICKUP. THE PRODUCED PULSES ARE RECTIFIED TO ESTABLISH A DC VOLTAGE HAVING AN AMPLITUDE DIRECTLY RELATED TO SPEED. FUNCTION DETECTORS RESPOND TO DIFFERENT LEVELS OF THE DC VOLTAGE TO OPERATE RELAYS INDICATIVE OF THE MEASURED SPEED. THE DC VOLTAGE CONTROLS THE TIMING RATIO OF A VARIABLE RECTANGULAR WAVE GENERATOR, THE OUTPUT OF WHICH OPERATES THE CONTROL VALVE OF A HYDRAULIC SPEED REGULATOR.
Inventors
- 👤 John I Moss
- 👤 Fred R Wright
- 👤 Walter Jaskiewicz
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 |
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| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |