US3256453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronous motors
Assignee: Consolidated Electronics Industries Corp
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Filing: 1962-08-27
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Granted: 1966-06-14
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Expires: 1982-08-27
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Haydon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:47
CPC Classifications
H; H02; H02K; H02K21/00; H02K21/12; H02K21/14; H02K21/18; H02K21/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A SELF-STARTING ALTERNATING CURRENT MOTOR COMPRISING, A NON-SALIENT CYLINDRICAL ROTOR MOUNTED ON A SHAFT AND HAVING A PLURALITY OF PERMANENTLY MAGNETIZED POLES OF OPPOSITE POLARITY ALTERNATELY DISPOSED SUBSTANTIALLY EQUIANGULARLY AROUND THE PERIPHERY THEREOF, A STATOR HAVING A FIRST AND A SECOND SET OF STATOR POLE FACES, SAID RESPECTIVE SETS BEING ARRANGED IN OPPOSING FACE-WISE RELATIONSHIP AND PARTIALLY EMBRACING SAID ROTOR LYING THEREBETWEEN THROUGH RESPECTIVE ARCS OF LESS THAN 180 MECHANICAL DEGREES, AND MEANS FOR PRODUCING AN ALTERNATING FIELD OF MAGNETIC FLUX IN SAID STATOR SUCH THAT THE SPACING BETWEEN INDIVIDUAL STATOR POLE FACES OF THE SAME SET IS AN EVEN MULTIPLE OF 180 ELECTRICAL DEGREES WHILE THE SPACING BETWEEN INDIVIDUAL STATOR POLE FACES OF DIFFERENT SETS IS AN ODD MULTIPLE OF 180 ELECTRICAL DEGREES AT ANY GIVEN INSTANT OF TIME, SAID STATOR AND SAID ROTOR BEING ADOPTED TO
Claim 2
Dependent Claim
138 words
A SELF-STARTING ALTERNATING CURRENT MOTOR COMPRISING, A NON-SALIENT CYLINDRICAL ROTOR MOUNTED ON A SHAFT AND HAVING A PLURALITY OF PERMANENTLY MAGNETIZED POLES OF OPPOSITE POLARITY ALTERNATELY DISPOSED SUBSTANTIALLY EQUIANGULARLY AROUND THE PERIPHERY THEREOF, A STATOR HAVING A FIRST AND A SECOND SET OF STATOR POLE FACES, SAID RESPECTIVE SETS BEING ARRANGED IN OPPOSING FACE-WISE RELATIONSHIP AND PARTIALLY EMBRACING SAID ROTOR LYING THEREBETWEEN THROUGH RESPECTIVE ARCS OF LESS THAN 180 MECHANICAL DEGREES, AND MEANS FOR PRODUCING AN ALTERNATING FIELD OF MAGNETIC FLUX IN SAID STATOR SUCH THAT THE SPACING BETWEEN INDIVIDUAL STATOR POLE FACES OF THE SAME SET IS AN EVEN MULTIPLE OF 180 ELECTRICAL DEGREES WHILE THE SPACING BETWEEN INDIVIDUAL STATOR POLE FACES OF DIFFERENT SETS IS AN ODD MULTIPLE OF 180 ELECTRICAL DEGREES AT ANY GIVEN INSTANT OF TIME, SAID STATOR AND SAID ROTOR BEING ADOPTED TO
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) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |