Patent US3348086A successfully refreshed from Google Patents.
US3348086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flat coreless direct current motor
Assignee: FUJIYA DENKI KK
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Filing: 1964-11-10
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Granted: 1967-10-17
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Expires: 1984-11-10
Abstract
No abstract record available.
Inventors
- 👤 Monma Hiroshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:05
CPC Classifications
H; H02; H02K; H02K23/00; H02K23/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A FLAT CORELESS DIRECT CURRENT MOTOR COMPRISING, IN COMBINATION, A SUBSTANTIALLY FLAT AND SUBSTANTIALLY PLANAR CORE ASSEMBLY INCLUDING FIVE TRUNCATED-SECTOR-SHAPE SUBSTANTIALLY FLAT COILS EACH HAVING AN ANGULAR EXTENT OF SUBSTANTIALLY 144* AND A PAIR OF RADIAL LEGS, SAID COILS BEING ARRANGED IN ARCUATELY OVERLAPPING RELATION WITH EACH COIL ARCUATELY OVERLAPPING ADJACENT COILS TO AN ANGULAR EXTENT OF SUBSTANTIALLY 72*; A PAIR OF TRUNCATED-SECTOR-SHAPE FIELD MAGNETS ARRANGED IN DIAMETRICALLY OPPOSED SYMMETRICALLY ARCUATELY SPACED RELATION AND SUBSTANTIALLY CONCENTRIC WITH SAID COIL ASSEMBLY; A COMMUTATOR SUBSTANTIALLY CONCENTRIC WITH SAID COIL ASSEMBLY; MEANS MOUNTING SAID COIL ASSEMBLY AS SAID COMMUTATOR FOR CONJOINT ROTATION RELATIVE TO SAID FIELD MAGNETS; MAGNETIC YOKE MEANS DEFINING, WITH SAID FIELD MAGNETS, AN AIR GAP IN WHICH SAID COIL ASSEMBLY
Claim 2
Dependent Claim
120 words
A FLAT CORELESS DIRECT CURRENT MOTOR COMPRISING, IN COMBINATION, A SUBSTANTIALLY FLAT AND SUBSTANTIALLY PLANAR CORE ASSEMBLY INCLUDING FIVE TRUNCATED-SECTOR-SHAPE SUBSTANTIALLY FLAT COILS EACH HAVING AN ANGULAR EXTENT OF SUBSTANTIALLY 144* AND A PAIR OF RADIAL LEGS, SAID COILS BEING ARRANGED IN ARCUATELY OVERLAPPING RELATION WITH EACH COIL ARCUATELY OVERLAPPING ADJACENT COILS TO AN ANGULAR EXTENT OF SUBSTANTIALLY 72*; A PAIR OF TRUNCATED-SECTOR-SHAPE FIELD MAGNETS ARRANGED IN DIAMETRICALLY OPPOSED SYMMETRICALLY ARCUATELY SPACED RELATION AND SUBSTANTIALLY CONCENTRIC WITH SAID COIL ASSEMBLY; A COMMUTATOR SUBSTANTIALLY CONCENTRIC WITH SAID COIL ASSEMBLY; MEANS MOUNTING SAID COIL ASSEMBLY AS SAID COMMUTATOR FOR CONJOINT ROTATION RELATIVE TO SAID FIELD MAGNETS; MAGNETIC YOKE MEANS DEFINING, WITH SAID FIELD MAGNETS, AN AIR GAP IN WHICH SAID COIL ASSEMBLY
References Cited (Backward Citations)
US1737128A
Cited
US2853637A
Cited
US3118076A
Cited
US3144574A
Cited
US2970238A
Cited
US3280353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |