US3100270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Subminiature electric motor
Assignee: Louis Marx and Co Inc
•
Filing: 1962-11-20
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Granted: 1963-08-06
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Expires: 1982-11-20
Abstract
No abstract record available.
Inventors
- 👤 Noel L Case
- 👤 Willis E Rexford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:09
CPC Classifications
H; H02; H02K; H02K23/00; H02K23/02; H02K23/04; H02K1/00; H02K1/06; H02K1/12; H02K1/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A MOTOR COMPRISING AN ARMATURE AND COMMUTATOR ROTATABLE IN A PERMANENT MAGNET FIELD, AND BRUSH ASSEMBLIES, EACH BRUSH ASSEMBLY INCLUDING A BRUSH, A TUBULAR METAL BRUSH HOLDER HAVING A DIAMETER SUBSTANTIALLY LARGER THAN THAT OF THE BRUSH, A HELICAL PULL SPRING HAVING A DIAMETER INTERMEDIATE THAT OF THE BRUSH AND BRUSH HOLDER, SAID SPRING BEING HOUSED WITHIN THE BRUSH HOLDER AND AROUND THE BRUSH WITH THE OUTER END OF THE SPRING BEARING AGAINST THE OUTER END OF THE BRUSH AND ITS INNER END BEARING AGAINST THE INNER END OF THE TUBULAR HOLDER, AND INSULATION MEANS SURROUNDING AND HOLDING THE METAL BRUSH HOLDER.
Claim 2
Dependent Claim
102 words
A MOTOR COMPRISING AN ARMATURE AND COMMUTATOR ROTATABLE IN A PERMANENT MAGNET FIELD, AND BRUSH ASSEMBLIES, EACH BRUSH ASSEMBLY INCLUDING A BRUSH, A TUBULAR METAL BRUSH HOLDER HAVING A DIAMETER SUBSTANTIALLY LARGER THAN THAT OF THE BRUSH, A HELICAL PULL SPRING HAVING A DIAMETER INTERMEDIATE THAT OF THE BRUSH AND BRUSH HOLDER, SAID SPRING BEING HOUSED WITHIN THE BRUSH HOLDER AND AROUND THE BRUSH WITH THE OUTER END OF THE SPRING BEARING AGAINST THE OUTER END OF THE BRUSH AND ITS INNER END BEARING AGAINST THE INNER END OF THE TUBULAR HOLDER, AND INSULATION MEANS SURROUNDING AND HOLDING THE METAL BRUSH HOLDER.
References Cited (Backward Citations)
US651326A
Cited
AT13422B
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FR448007A
Cited
GB188895A
Cited
US2177472A
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US2348684A
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US2516608A
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US2748302A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-05 | 1967-02-04 | 1967-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-05 | 1971-02-04 | 1971-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-05 | 1975-02-04 | 1975-08-06 | $7700.00 | Window Closed / Lapsed |