Digital system
Abstract
Abstract DIGITAL CIRCUITRY CONVERTING INPUT PULSES INTO STEPPING MOTOR WINDING ENERGIZATION PATTERN. INPUT PULSES ARE CONVERTED BY AN U-DOWN COUNTER INTO SEQUENCE OF PULSE PATTERNS CORRESPONDING TO DESIRED SEQUENCES OF ENERGIZATION PATTERNS, AND PRODUCE GATING PULSES MAINTAINING ENERGIZATION PATTERNS BETWEEN INPUT PULSES FOR ONLY JUST SUCH TIME AS IS NEEDED TO ASSURE COMPLETION OF MOTOR STEPS. THE COUNTER IS A FLIP-FLOP ARRANGEMENT RECEIVING INPUT PULSES FROM SEPARATE UP AND DOWN INPUT GATES. THE COUNTER CAN PRODUCE MORE THAN THE DESIRED NUMBER OF PATTERNS, BUT PRODUCTION OF UNDESIRED PATTERNS MAKES THE COUNTER REVERT TO A DESIRED PATTERN. THE STEPPING MOTOR UPON STEPPING TO ONE OF ITS LIMITS DISABLES THE CORRESPONDING INPUT GATE, IN EFFECT.
Inventors
- 👤 Richard A Rappaport
Bibliographic Details
Claims Analysis
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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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |