US3628073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polarized micromotor
Assignee: Compagnie des Montres Longines Francillon SA
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Filing: 1970-05-25
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Granted: 1971-12-14
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Expires: 1990-05-25
Abstract
Abstract A polarized micromotor, including at least one flat coil, cooperating with at least one magnetic circuit consisting of one pair of permanent magnets and two pairs of polar pieces, characterized in that the magnets have their magnetizing axes perpendicular to the axis of the coil and are arranged in the close vicinity of said coil, the fields of the magnets being parallel to each other and of opposite senses, the polar pieces being fixed to the faces constituting the poles of the magnets and covering the latter without extending beyond them.
Inventors
- 👤 Jean-Claude Berney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:54
CPC Classifications
H; H02; H02K; H02K33/00; H02K33/18; G; G04; G04C; G04C3/00; G04C3/08; G04C3/10; G04C3/101; G04C3/102
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
109 words
A polarized micromotor, including at least one flat stationary coil, cooperating with at least one movable magnetic circuit, consisting of one pair of permanent magnets and two pairs of polar pieces, characterized in that the magnets have their magnetizing axes perpendicular to the axis of the coil and are arranged in the close vicinity of said coil, the fields of the magnets being parallel to each other and of opposite senses, the polar pieces serving for canalizing the field through the coil being fixed on the faces constituting the poles of the magnets and covering such faces without extending beyond said magnets in a direction parallel to said faces.
Claim 2
Dependent Claim
109 words
A polarized micromotor, including at least one flat stationary coil, cooperating with at least one movable magnetic circuit, consisting of one pair of permanent magnets and two pairs of polar pieces, characterized in that the magnets have their magnetizing axes perpendicular to the axis of the coil and are arranged in the close vicinity of said coil, the fields of the magnets being parallel to each other and of opposite senses, the polar pieces serving for canalizing the field through the coil being fixed on the faces constituting the poles of the magnets and covering such faces without extending beyond said magnets in a direction parallel to said faces.
Claim 3
Dependent Claim
14 words
A micromotor according to claim 1, wherein the magnets have the shape of parallelepipeds.
Claim 4
Dependent Claim
26 words
A micromotor according to claim 1, wherein each of the polar pieces has approximately the shape of a triangular prism, its thickness tapering from the coil.
Claim 5
Dependent Claim
109 words
A polarized micromotor, including at least one flat movable coil, cooperating with at least one magnetic stationary circuit, consisting of one pair of permanent magnets and two pairs of polar pieces, characterized in that the magnets have their magnetizing axes perpendicular to the axis of the coil and are arranged in the close vicinity of said coil, the fields of the magnets being parallel to each other and of opposite senses, the polar pieces serving for canalizing the field through the coil being fixed on the faces constituting the poles of the magnets and covering such faces without extending beyond said magnets in a direction parallel to said faces.
Claim 6
Dependent Claim
109 words
A polarized micromotor, including at least one flat movable coil, cooperating with at least one magnetic stationary circuit, consisting of one pair of permanent magnets and two pairs of polar pieces, characterized in that the magnets have their magnetizing axes perpendicular to the axis of the coil and are arranged in the close vicinity of said coil, the fields of the magnets being parallel to each other and of opposite senses, the polar pieces serving for canalizing the field through the coil being fixed on the faces constituting the poles of the magnets and covering such faces without extending beyond said magnets in a direction parallel to said faces.
Claim 7
Dependent Claim
14 words
A micromotor according to claim 4, wherein the magnets have the shape of parallelepipeds.
Claim 8
Dependent Claim
26 words
A micromotor according to claim 4, wherein each of the polar pieces has approximately the shape of a triangular prism, its thickness tapering from the coil.
References Cited (Backward Citations)
US3459976A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |