US3287569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Matrix for control of step motors
Assignee: Individual
•
Filing: 1962-06-20
•
Granted: 1966-11-22
•
Expires: 1982-06-20
Abstract
No abstract record available.
Inventors
- 👤 Duane A Carney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:17
CPC Classifications
H; H02; H02P; H02P8/00; H02P8/14; H02P8/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A CIRCUIT FOR CONTROLLING THE DIRECTION OF ROTATION OF A BIDIRECTIONAL STEP MOTOR COMPRISING: A FIRST INPUT CIRCUIT TO RECEIVE FORWARD CONTROL PULSES, A SECOND INPUT CIRCUIT TO RECEIVE BACKWARD CONTROL PULSES, A PAIR OF FLIP-FLOPS, AND A LOGIC MATRIX HAVING A FORWARD CHANNEL CONNECTED TO SAID FIRST INPUT CIRCUIT AND A REVERSE CHANNEL CONNECTED TO SAID SECOND INPUT CIRCUIT, EACH OF SAID CHANNELS SENSING THE PRE-SIGNAL STATUS OF SAID FLIP-FLOPS BY SENSING THEIR RESPECTIVE OUTPUT VOLTAGES, SAID FORWARD CHANNEL BEING CONNECTED TO SAID FLIP-FLOPS TO SWITCH SAID FLIP-FLOPS ALTERNATELY IN A FIRST PROGRESSION OF STATES MOVING IN A FIRST DIRECTION BY A SUCCESSION OF FORWARD CONTROL PULSES RECEIVED ON SAID FIRST INPUT CIRCUIT AND SAID SECOND CHANNEL BEING CONNECTED IN A SAID FLIP-FLOPS TO SWITCH SAID FLIP-FLOPS ALTERNATELY IN A SECOND PROGRESSION OF STATES MOVING IN A DIRECTION OPPOSITE SAID FIRST PROGRESSION BY A SUCCESSION OF BACKWARD CONTROL PULSES RECEIVED ON SAID SECOND INPUT CIRCUIT.
Claim 2
Dependent Claim
156 words
A CIRCUIT FOR CONTROLLING THE DIRECTION OF ROTATION OF A BIDIRECTIONAL STEP MOTOR COMPRISING: A FIRST INPUT CIRCUIT TO RECEIVE FORWARD CONTROL PULSES, A SECOND INPUT CIRCUIT TO RECEIVE BACKWARD CONTROL PULSES, A PAIR OF FLIP-FLOPS, AND A LOGIC MATRIX HAVING A FORWARD CHANNEL CONNECTED TO SAID FIRST INPUT CIRCUIT AND A REVERSE CHANNEL CONNECTED TO SAID SECOND INPUT CIRCUIT, EACH OF SAID CHANNELS SENSING THE PRE-SIGNAL STATUS OF SAID FLIP-FLOPS BY SENSING THEIR RESPECTIVE OUTPUT VOLTAGES, SAID FORWARD CHANNEL BEING CONNECTED TO SAID FLIP-FLOPS TO SWITCH SAID FLIP-FLOPS ALTERNATELY IN A FIRST PROGRESSION OF STATES MOVING IN A FIRST DIRECTION BY A SUCCESSION OF FORWARD CONTROL PULSES RECEIVED ON SAID FIRST INPUT CIRCUIT AND SAID SECOND CHANNEL BEING CONNECTED IN A SAID FLIP-FLOPS TO SWITCH SAID FLIP-FLOPS ALTERNATELY IN A SECOND PROGRESSION OF STATES MOVING IN A DIRECTION OPPOSITE SAID FIRST PROGRESSION BY A SUCCESSION OF BACKWARD CONTROL PULSES RECEIVED ON SAID SECOND INPUT CIRCUIT.
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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) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |