US3404359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control signal generator for step motor
Assignee: Tokyo Keiki Inc
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Filing: 1966-06-30
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Granted: 1968-10-01
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Expires: 1986-06-30
Abstract
No abstract record available.
Inventors
- 👤 Kawada Shin-Ichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:05
CPC Classifications
H; H02; H02P; H02P8/00; H02P8/14; H02P8/18; G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/18; G05D3/183; H02K; H02K19/00; H02K19/16; H02K19/22; H02K19/24; H02K39/00; H02P5/00; H02P5/46; H02P5/48; H02P5/49
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A SIGNAL CONTROL DEVICE FOR A STEP MOTOR COMPRISING A CYLINDRICAL STATOR HAVING A PLURALITY OF PAIRS OF POLE PIECES, THE NUMBER OF SAID POLE PIECES BEING MULTIPLES OF SIX AND SAID POLE PIECES OF EACH PAIR CONFRONTING EACH OTHER ALONG A DIAMETER OF SAID STATOR, A PRIMARY WINDING MOUNTED ON SAID STATOR IN SUCH A MANNER THAT THE DIRECTION OF THE MAGNETIC FIELD ESTABLISHED THEREBY IN ONE POLE PIECE OF EACH PAIR OF SAID STATOR POLE PIECES IS THE SAME AS THAT IN THE OTHER POLE PIECE THEREOF, A ROTOR DISPOSED COAXIALLY WITH SAID CYLINDRICAL STATOR AND PROVIDED WITH AT LEAST TWO POLE PIECES, ONE OF SAID ROTOR POLE PIECES CONFRONTING ONE OF ONE PAIR OF SAID STATOR POLE PIECES WHEN THE OTHER OF SAID ROTOR POLE PIECES OPPOSITE SAID ONE ROTOR PIECE CONFRONTS THE OTHER OF SAID ONE PAIR OF STATOR POLE PIECES, SAID ROTOR BEING FREELY ROTATED AT ANY
Claim 2
Dependent Claim
152 words
A SIGNAL CONTROL DEVICE FOR A STEP MOTOR COMPRISING A CYLINDRICAL STATOR HAVING A PLURALITY OF PAIRS OF POLE PIECES, THE NUMBER OF SAID POLE PIECES BEING MULTIPLES OF SIX AND SAID POLE PIECES OF EACH PAIR CONFRONTING EACH OTHER ALONG A DIAMETER OF SAID STATOR, A PRIMARY WINDING MOUNTED ON SAID STATOR IN SUCH A MANNER THAT THE DIRECTION OF THE MAGNETIC FIELD ESTABLISHED THEREBY IN ONE POLE PIECE OF EACH PAIR OF SAID STATOR POLE PIECES IS THE SAME AS THAT IN THE OTHER POLE PIECE THEREOF, A ROTOR DISPOSED COAXIALLY WITH SAID CYLINDRICAL STATOR AND PROVIDED WITH AT LEAST TWO POLE PIECES, ONE OF SAID ROTOR POLE PIECES CONFRONTING ONE OF ONE PAIR OF SAID STATOR POLE PIECES WHEN THE OTHER OF SAID ROTOR POLE PIECES OPPOSITE SAID ONE ROTOR PIECE CONFRONTS THE OTHER OF SAID ONE PAIR OF STATOR POLE PIECES, SAID ROTOR BEING FREELY ROTATED AT ANY
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) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |