US3201671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor controlled step motor
Assignee: International Standard Electric Corp
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Filing: 1961-10-17
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Granted: 1965-08-17
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Expires: 1981-10-17
Abstract
No abstract record available.
Inventors
- 👤 Schiebeler Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:22
CPC Classifications
H; H02; H02P; H02P8/00; H02P8/24; G; G06; G06K; G06K13/00; G06K13/18; G06K13/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
140 words
A CONTROLLABLE AND SYNCHRONIZABLE PERFORATED TAPE DRIVE FOR ACHIEVING HIGH TAPE SPEEDS, COMPRISING: A STEPPER SERVO MOTOR HAVING ASSOCIATED MAGNET COILS AND CONTACTS ACTUATED BY A MOTOR DRIVEN CAMPLATE, AN AMPLIFIER COUPLED BETWEEN EACH SAID MOTOR CONTACT AND SAID ASSOCIATED MAGNET COIL FOR ENERGIZING SAID ASSOCIATED MAGNET COIL IN THE RHYTHM OF THE CLOSING TIMES OF THE SAID MOTOR CONTACTS WHEREBY THE SIGNALS APPLIED TO SAID MOTOR COILS AND SAID CONTACTS ARE MORE EFFECTIVELY CONTROLLED, A SWITCHING ELEMENT IN SHUNT WITH EACH SAID MOTOR CONTACT, AND MEANS FOR ALTERNATELY OPERATING SAID SWITCHING ELEMENTS AT THE RATED SPEED OF SAID MOTOR SO THAT THE PERIOD OF CLOSURE OF SAID SWITCHING ELEMENTS CORRESPONDS TO THE CLOSING TIMES OF THE SAID MOTOR CONTACTS AT THE SAID RATED SPEED, AND OTHERWISE LEADS OR LAGS THE SAID CLOSING TIMES TO PROVIDE AN APPROPRIATE SPEED CORRECTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |