Patent US3396322A successfully refreshed from Google Patents.
US3396322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stepping motor drive circuit including damping means
Assignee: Xerox Corp
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Filing: 1965-10-01
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Granted: 1968-08-06
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Expires: 1985-10-01
Abstract
No abstract record available.
Inventors
- 👤 George T Shimabukuro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:25
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/00567; H04N1/0057; H04N1/04; H04N1/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A DRIVE CIRCUIT FOR A STEPPING MOTOR WITH FIRST AND SECOND DRIVE COILS RESPONSIVE TO ALTERNATE PULSES OF OPPOSITE POLARITY APPLIED TO SAID COILS COMPRISING: A TRIGGER FLIP-FLOP, A PUSH-PULL DRIVER AMPLIFIER, MEANS FOR COUPLING THE OUTPUT OF SAID DRIVER AMPLIFIER ACROSS SAID COILS OF SAID MOTOR. TRANSFORMER MEANS FOR COUPLING THE OUTPUT OF SAID FLIP-FLOP TO THE INPUT OF SAID DRIVER AMPLIFIER WHEREBY EACH TRANSITION OF SAID FLIP-FLOP MOMENTARILY ENERGIZES A DIFFERENT SECTION OF SAID PUSH-PULL DRIVER AMPLIFIER THEREBY ALTERNATELY DELIVERING CONTROLLING CURRENT TO A DIFFERENT ONE OF SAID COILS, AND DIRECT CURRENT PATH MEANS FOR INDIVIDUALLY COUPLING THE OUTPUT TERMINALS OF SAID FLIP-FLOP TO A RESPECTIVE ONE OF SAID INPUTS OF SAID DRIVER AMPLIFIER WHEREBY
Claim 2
Dependent Claim
117 words
A DRIVE CIRCUIT FOR A STEPPING MOTOR WITH FIRST AND SECOND DRIVE COILS RESPONSIVE TO ALTERNATE PULSES OF OPPOSITE POLARITY APPLIED TO SAID COILS COMPRISING: A TRIGGER FLIP-FLOP, A PUSH-PULL DRIVER AMPLIFIER, MEANS FOR COUPLING THE OUTPUT OF SAID DRIVER AMPLIFIER ACROSS SAID COILS OF SAID MOTOR. TRANSFORMER MEANS FOR COUPLING THE OUTPUT OF SAID FLIP-FLOP TO THE INPUT OF SAID DRIVER AMPLIFIER WHEREBY EACH TRANSITION OF SAID FLIP-FLOP MOMENTARILY ENERGIZES A DIFFERENT SECTION OF SAID PUSH-PULL DRIVER AMPLIFIER THEREBY ALTERNATELY DELIVERING CONTROLLING CURRENT TO A DIFFERENT ONE OF SAID COILS, AND DIRECT CURRENT PATH MEANS FOR INDIVIDUALLY COUPLING THE OUTPUT TERMINALS OF SAID FLIP-FLOP TO A RESPECTIVE ONE OF SAID INPUTS OF SAID DRIVER AMPLIFIER WHEREBY
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-06 | 1972-02-05 | 1972-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-06 | 1976-02-05 | 1976-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-06 | 1980-02-05 | 1980-08-06 | $7700.00 | Window Closed / Lapsed |