US3619679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Generator structure
Assignee: Syncro Corp
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Filing: 1970-04-10
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Granted: 1971-11-09
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Expires: 1990-04-10
Abstract
Abstract A generator having a pair of armature bodies with interdigitating fingers on each of the armature bodies defining magnetic poles of opposite polarity with one of the armature bodies being a preexisting rotary member such as a flywheel and with the other armature body being a separate fabricated member nested in the one member and with the fingers of each extending in the same axial direction.
Inventors
- 👤 Thomas F Carmichael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:53
CPC Classifications
H; H02; H02K; H02K21/00; H02K21/12; H02K21/22; H02K21/222
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
107 words
An electrical generator for an engine comprising: a stator assembly having a plurality of circumferentially disposed poles, a rotor assembly having a first plurality of axially extending fingers interdigitated with a second plurality of axially extending fingers with said first and second pluralities of fingers extending in the same axial direction towards said poles, said rotor assembly including magnet means comprising a permanent magnet for providing magnetic flux of opposite polarities to said first and second pluralities of fingers, said second plurality of fingers being formed integrally with a preexisting structure performing an independent function with the engine and being adapted to be rotated by the engine.
Claim 2
Dependent Claim
107 words
An electrical generator for an engine comprising: a stator assembly having a plurality of circumferentially disposed poles, a rotor assembly having a first plurality of axially extending fingers interdigitated with a second plurality of axially extending fingers with said first and second pluralities of fingers extending in the same axial direction towards said poles, said rotor assembly including magnet means comprising a permanent magnet for providing magnetic flux of opposite polarities to said first and second pluralities of fingers, said second plurality of fingers being formed integrally with a preexisting structure performing an independent function with the engine and being adapted to be rotated by the engine.
Claim 3
Dependent Claim
25 words
The generator of claim 1 with said rotor assembly including an armature having said first plurality of fingers and being constructed of flat sheet stock.
Claim 4
Dependent Claim
137 words
An electrical generator for an engine comprising: a stator assembly having a plurality of circumferentially disposed poles, a rotor assembly having a first plurality of axially extending fingers interdigitated with a second plurality of axially extending fingers with said first and second pluralities of fingers extending in the same axial direction towards said poles, said rotor assembly including magnet means for providing magnetic flux of opposite polarities to said first and second pluralities of fingers, said second plurality of fingers being formed integrally with a preexisting structure performing an independent function with the engine and being adapted to be rotated by the engine, said rotor assembly including an armature having said first plurality of fingers and being constructed of flat sheet stock, said magnet means comprising a permanent magnet located between said armature and said preexisting structure.
Claim 5
Dependent Claim
137 words
An electrical generator for an engine comprising: a stator assembly having a plurality of circumferentially disposed poles, a rotor assembly having a first plurality of axially extending fingers interdigitated with a second plurality of axially extending fingers with said first and second pluralities of fingers extending in the same axial direction towards said poles, said rotor assembly including magnet means for providing magnetic flux of opposite polarities to said first and second pluralities of fingers, said second plurality of fingers being formed integrally with a preexisting structure performing an independent function with the engine and being adapted to be rotated by the engine, said rotor assembly including an armature having said first plurality of fingers and being constructed of flat sheet stock, said magnet means comprising a permanent magnet located between said armature and said preexisting structure.
Claim 6
Dependent Claim
39 words
The generator of claim 3 with said preexisting structure being a flywheel and including first means mounting said armature and said magnet on said flywheel and second means mounting said stator assembly on an adjacent surface of the engine.
Claim 7
Dependent Claim
31 words
The generator of claim 4 with said flywheel having a hub portion and with said first means comprising a pilot ring cooperating with said hub portion to properly locate said armature.
Claim 8
Dependent Claim
12 words
The generator of claim 1 with said preexisting structure being a flywheel.
Claim 9
Dependent Claim
32 words
The generator of claim 6 with said flywheel having an annular rim and with said second plurality of fingers being defined by axially extending grooves extending only partially radially through said rim.
Claim 10
Dependent Claim
30 words
The generator of claim 6 with said flywheel having said first plurality of fingers defined by axially extending radial through slots whereby said first plurality of fingers are circumferentially separate.
Claim 11
Dependent Claim
26 words
The generator of claim 1 with said preexisting structure being a cast flywheel and with said second plurality of fingers being integrally cast with said flywheel.
Claim 12
Dependent Claim
25 words
The generator of claim 4 with said flywheel being a cast structure and with said second plurality of fingers being integrally cast with 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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |