US3328658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for controlling stepper motor starting and stopping operations
Assignee: International Business Machines Corp
•
Filing: 1964-07-02
•
Granted: 1967-06-27
•
Expires: 1984-07-02
Abstract
No abstract record available.
Inventors
- 👤 Leon J Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:21
CPC Classifications
H; H02; H02P; H02P8/00; H02P8/32; G; G06; G06K; G06K13/00; G06K13/18; G06K13/20; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/537
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A LOGICAL SYSTEM FOR CONTROLLING THE OPERATION OF A STEPPING MOTOR COMPRISING MEANS FOR PRODUCING A TRAIN OF SPACED PULSES OCCURING AT A REGULAR REPETITION RATE, MEANS FOR SELECTABLY ACTUATING SAID PULSE TRAIN PRODUCING MEANS, LOGIC MEANS RESPONSIVE TO SIGNALS FROM SAID PULSE TRAIN PRODUCING MEANS FOR MODIFYING THE SAID PULSE TRAIN TO INCLUDE THEREIN AT LEAST ONE PULSE OCCURRING IRREGULARLY WITH RESPECT TO THE PULSES OF SAID TRAIN, MEANS FOR DEACTIVATING SAID PULSE TRAIN PRODUCING MEANS SUBSEQUENT TO A PREDETERMINED NUMBER OF PULSES THEREFROM, AND DRIVING MEANS RESPONSIVE TO THE SAID MODIFIED PULSE TRAIN FOR ENERGIZING SAID STEPPING MOTOR IN ACCORDANCE THEREWITH, SAID LOGIC MEANS BEING CONSTRUCTED AND ARRANGED FOR TIMING THE PULSES OF SAID MODIFIED TRAIN FOR PRODUCING RELATIVELY NON-OSCILLATING STEPPING MOTION BY SAID MOTOR.
Claim 2
Dependent Claim
127 words
A LOGICAL SYSTEM FOR CONTROLLING THE OPERATION OF A STEPPING MOTOR COMPRISING MEANS FOR PRODUCING A TRAIN OF SPACED PULSES OCCURING AT A REGULAR REPETITION RATE, MEANS FOR SELECTABLY ACTUATING SAID PULSE TRAIN PRODUCING MEANS, LOGIC MEANS RESPONSIVE TO SIGNALS FROM SAID PULSE TRAIN PRODUCING MEANS FOR MODIFYING THE SAID PULSE TRAIN TO INCLUDE THEREIN AT LEAST ONE PULSE OCCURRING IRREGULARLY WITH RESPECT TO THE PULSES OF SAID TRAIN, MEANS FOR DEACTIVATING SAID PULSE TRAIN PRODUCING MEANS SUBSEQUENT TO A PREDETERMINED NUMBER OF PULSES THEREFROM, AND DRIVING MEANS RESPONSIVE TO THE SAID MODIFIED PULSE TRAIN FOR ENERGIZING SAID STEPPING MOTOR IN ACCORDANCE THEREWITH, SAID LOGIC MEANS BEING CONSTRUCTED AND ARRANGED FOR TIMING THE PULSES OF SAID MODIFIED TRAIN FOR PRODUCING RELATIVELY NON-OSCILLATING STEPPING MOTION BY SAID MOTOR.
References Cited (Backward Citations)
US3219897A
Cited
US3165686A
Cited
US3217221A
Cited
US3263141A
Cited
US3241017A
Cited
US3225277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |