US3885177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pole-shoe magnet group for a magnetomotive device
Assignee: RE Phelon Co Inc
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Filing: 1974-06-07
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Granted: 1975-05-20
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Expires: 1994-06-07
Abstract
Abstract A pole-shoe magnet group for a flywheel magneto which is composed of a plurality of integral ferromagnetic laminations embracing a permanent magnet. Each of the laminations has at least two pole-shoe portions interconnected by a web disposed inwardly of the outer surface of the pole-shoes, whereby the web portion of said laminations are removable in a single drilling operation.
Inventors
- 👤 Russell D Phelon
- 👤 Amsterdam John C Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:18
CPC Classifications
F; F02; F02P; F02P1/00; H; H02; H02K; H02K1/00; H02K1/06; H02K1/22; H02K1/27; H02K1/2706; H02K1/272; H02K1/2726
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
107 words
In combination with a flywheel having a rim of nonmagnetic material, a magneto comprising a permanent magnet, a plurality of stacked ferromagnetic laminations fastened together in clamped relation about said magnet and forming a unitary assembly embedded in said nonmagnetic material, said laminations including pole-shoe portions having a pole-shoe radius to provide surfaces of flux emanation for said group, said surfaces being generally flush with a cylindrical surface of said rim, each lamination being integral and including a web portion interconnecting the pole-shoe portions thereof and being disposed inwardly of said surfaces of flux emanation and embedded in said nonmagnetic material forming the rim of said flywheel.
Claim 2
Dependent Claim
107 words
In combination with a flywheel having a rim of nonmagnetic material, a magneto comprising a permanent magnet, a plurality of stacked ferromagnetic laminations fastened together in clamped relation about said magnet and forming a unitary assembly embedded in said nonmagnetic material, said laminations including pole-shoe portions having a pole-shoe radius to provide surfaces of flux emanation for said group, said surfaces being generally flush with a cylindrical surface of said rim, each lamination being integral and including a web portion interconnecting the pole-shoe portions thereof and being disposed inwardly of said surfaces of flux emanation and embedded in said nonmagnetic material forming the rim of said flywheel.
Claim 3
Dependent Claim
45 words
In combination with a flywheel as set forth in claim 1 in which said web includes a generally cylindrical porTion with a concentric bore therethrough and said nonmagnetic material in which it is embedded includes a recess in alignment with the axis of said bore.
Claim 4
Dependent Claim
113 words
A flywheel magneto comprising a rim of nonmagnetic material, a permanent magnet, a plurality of ferromagnetic laminations stacked in superposed relation and in clamping relationship about said magnet, said laminations including pole-shoe portions having a pole-shoe radius to provide surfaces of flux emanation for said group generally flush with a cylindrical surface of said rim, said laminations being engaged with said permanent magnet within said rim and extending from said magnet radially toward said surfaces of flux emanation and then to web portions embedded in said rim, said web portions terminating on opposite sides of a bore extending through said rim in a direction parallel to the axis of rotation of said flywheel.
Claim 5
Dependent Claim
113 words
A flywheel magneto comprising a rim of nonmagnetic material, a permanent magnet, a plurality of ferromagnetic laminations stacked in superposed relation and in clamping relationship about said magnet, said laminations including pole-shoe portions having a pole-shoe radius to provide surfaces of flux emanation for said group generally flush with a cylindrical surface of said rim, said laminations being engaged with said permanent magnet within said rim and extending from said magnet radially toward said surfaces of flux emanation and then to web portions embedded in said rim, said web portions terminating on opposite sides of a bore extending through said rim in a direction parallel to the axis of rotation of said flywheel.
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) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |