US4550267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Redundant multiple channel electric motors and generators
Assignee: Sundstrand Corp
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Filing: 1985-06-14
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Granted: 1985-10-29
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Expires: 2005-06-14
Abstract
Abstract An electromotive machine has a stator provided with multiple sets of windings, each independently, electrically coupled to an electrical means, to establish separate power channels between the windings and the electrical means that allow for the simultaneous independent transmission of power through the channels when the machine is in operation. The electromotive machine may take either the form of a motor or a generator.
Inventors
- 👤 Jayant G. Vaidya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:05
CPC Classifications
H; H02; H02K; H02K19/00; H02K19/16; H02K19/34; H02K17/00; H02K17/02; H02K21/00; H02K21/12; H02K21/48; H02K3/00; H02K3/04; H02K3/28
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
72 words
An electromotive machine of the type having a stator and a rotor; said stator being provded with multiple sets of windings each independently electrically coupled to an electrical means with each set of windings simultaneously independently, transfering multiphase power between said electrical means and each set of windings to thereby establish separate power channels that allow for the simultaneous independent transmission of power through said channels when said machine is in operation.
Claim 2
Dependent Claim
72 words
An electromotive machine of the type having a stator and a rotor; said stator being provded with multiple sets of windings each independently electrically coupled to an electrical means with each set of windings simultaneously independently, transfering multiphase power between said electrical means and each set of windings to thereby establish separate power channels that allow for the simultaneous independent transmission of power through said channels when said machine is in operation.
Claim 3
Dependent Claim
21 words
The electromotive machine of claim 1 wherein said machine is a motor and said rotor is of the permanent magnet type.
Claim 4
Dependent Claim
31 words
The electromotive machine of claim 2 wherein said motor is a DC brushless machine and said multi-phase power input is provided by an inverter means from a source of DC power.
Claim 5
Dependent Claim
17 words
The electromotive machine of claim 3 wherein said multiple sets of windings comprise two sets of windings.
Claim 6
Dependent Claim
17 words
The electromotive machine of claim 3 wherein said multiple sets of windings comprise three sets of windings.
Claim 7
Dependent Claim
17 words
The electromotive machine of claim 3 wherein said multiple sets of windings comprise four sets of windings.
Claim 8
Dependent Claim
21 words
The electromotive machine of claim 1 wherein said stator has definitive multi-dimensional regions wherein there are located said sets of windings.
Claim 9
Dependent Claim
25 words
The electromotive machine of claim 7 wherein said definitive multi-dimensional regions are mutually exclusive and each of said regions has a separate set of windings.
Claim 10
Dependent Claim
28 words
The electromotive machine of claim 7 wherein said regions overlap one another and each said set of windings overlap an adjacent set of windings in an overlapping region.
Claim 11
Dependent Claim
21 words
The electromotive machine of claim 8 wherein said machine is a motor and said rotor is of the permanent magnet type.
Claim 12
Dependent Claim
31 words
The electromotive machine of claim 10 wherein said motor is a DC brushless machine and said multi-phase power input is provided by an inverter means from a source of DC power.
Claim 13
Dependent Claim
21 words
The electromotive machine of claim 9 wherein said machine is a motor and said rotor is of the permanent magnet type.
Claim 14
Dependent Claim
31 words
The electromotive machine of claim 12 wherein said motor is a DC brushless machine and said multi-phase power input is provided by an inverter means from a source of DC power.
Claim 15
Dependent Claim
22 words
The electromotive machine of claim 1 wherein said machine is an induction motor and said rotor is of the squirrel cage type.
Claim 16
Dependent Claim
17 words
The electromotive machine of claim 14 wherein said multiple sets of windings comprise three sets of windings.
Claim 17
Dependent Claim
17 words
The electromotive machine of claim 14 wherein said multiple sets of windings comprise four sets of windings.
Claim 18
Dependent Claim
21 words
The electromotive machine of claim 14 wherein said stator has definitive multi-dimensional regions wherein there are located said sets of windings.
Claim 19
Dependent Claim
25 words
The electromotive machine of claim 17 wherein said definitive multi-dimensional regions are mutually exclusive and each of said regions has a separate set of windings.
Claim 20
Dependent Claim
28 words
The electromotive machine of claim 17 wherein said regions overlap one another and each said set of windings overlap an adjacent set of windings in an overlapping region.
Claim 21
Dependent Claim
27 words
The electromotive machine of claim 19 wherein said electrical means that provides said multi-phase power input comprises an inverter means coupled to a source of DC power.
Claim 22
Dependent Claim
31 words
The electromotive machine of claim 1 wherein said machine is a generator, said rotor being coupled to a source of motive power and said electrical means is an electrical load means.
Claim 23
Dependent Claim
30 words
The electromotive machine of claim 21 wherein said electrical load means comprises multiple loads, each of which loads is individually coupled to at least one of said sets of windings.
Claim 24
Dependent Claim
15 words
The electromotive machine of claim 22 wherein said rotor is of the permanent magnet type.
Claim 25
Dependent Claim
21 words
The electromotive machine of claim 22 wherein said stator has definitive multi-dimensional regions wherein there are located said sets of windings.
Claim 26
Dependent Claim
25 words
The electromotive machine of claim 24 wherein said definitive multi-dimensional regions are mutually exclusive and each of said regions has a separate set of windings.
Claim 27
Dependent Claim
86 words
A permanent magnet brushless DC motor with multiple motive power redundancy accomplished by electromagnetic torque summing, said motor including in combination; a stator and a permanent magnet rotor, said stator provided with multiple sets of windings each independently electrically coupled and simultaneously provided with a multi-phase source of electrical power to thereby establish separate power channels to said sets of windings to thereby provide continued motive power to be delivered from said rotor in the event that one of said sets of windings should experience failure.
Claim 28
Dependent Claim
86 words
A permanent magnet brushless DC motor with multiple motive power redundancy accomplished by electromagnetic torque summing, said motor including in combination; a stator and a permanent magnet rotor, said stator provided with multiple sets of windings each independently electrically coupled and simultaneously provided with a multi-phase source of electrical power to thereby establish separate power channels to said sets of windings to thereby provide continued motive power to be delivered from said rotor in the event that one of said sets of windings should experience failure.
Claim 29
Dependent Claim
21 words
The electromotive machine of claim 26 wherein said stator has definitive multi-dimensional regions wherein there are located said sets of windings.
Claim 30
Dependent Claim
25 words
The electromotive machine of claim 27 wherein said definitive multi-dimensional regions are mutually exclusive and each of said regions has a separate set of windings.
Claim 31
Dependent Claim
28 words
The electromotive machine of claim 26 wherein said regions overlap one another and each said set of windings overlap an adjacent set of windings in an overlapping region.
Claim 32
Dependent Claim
88 words
A squirrel cage induction motor with multiple motive power redundancy accomplished by electromagnetic torque summing said motor including in combination, a stator and a squirrel cage type rotor, said stator provided with multiple sets of windings each independently electrically coupled and simultaneously provided with a multi-phase source of electrical power to thereby establish separate power channels to said sets of windings to thereby provide continued motive power to be delivered from said rotor in the event that one of said sets of windings should experience an electrical failure.
Claim 33
Dependent Claim
88 words
A squirrel cage induction motor with multiple motive power redundancy accomplished by electromagnetic torque summing said motor including in combination, a stator and a squirrel cage type rotor, said stator provided with multiple sets of windings each independently electrically coupled and simultaneously provided with a multi-phase source of electrical power to thereby establish separate power channels to said sets of windings to thereby provide continued motive power to be delivered from said rotor in the event that one of said sets of windings should experience an electrical failure.
Claim 34
Dependent Claim
21 words
The electromotive machine of claim 30 wherein said stator has definitive multi-dimensional regions wherein there are located said sets of windings.
Claim 35
Dependent Claim
25 words
The electromotive machine of claim 31 wherein said definitive multi-dimensional regions are mutually exclusive and each of said regions has a separate set of windings.
Claim 36
Dependent Claim
28 words
The electromotive machine of claim 30 wherein said regions overlap one another and each said set of windings overlap an adjacent set of windings in an overlapping region.
Claim 37
Dependent Claim
66 words
A multiple channel generator having electrically isolated outputs to multiple loads, said generator including in combination, a stator and a rotor adapted to be driven by a source of motive power, said stator being provided with multiple sets of windings, said multiple sets of windings adapted to be electrically coupled to said multiple loads to thereby simultaneously establish electrically isolated power channels to said multiple loads.
Claim 38
Dependent Claim
66 words
A multiple channel generator having electrically isolated outputs to multiple loads, said generator including in combination, a stator and a rotor adapted to be driven by a source of motive power, said stator being provided with multiple sets of windings, said multiple sets of windings adapted to be electrically coupled to said multiple loads to thereby simultaneously establish electrically isolated power channels to said multiple loads.
Claim 39
Dependent Claim
21 words
The electromotive machine of claim 34 wherein said stator has definitive multi-dimensional regions wherein there are located said sets of windings.
Claim 40
Dependent Claim
25 words
The electromotive machine of claim 35 wherein said definitive multi-dimensional regions are mutually exclusive and each of said regions has a separate set of windings.
Claim 41
Dependent Claim
16 words
The multiple channel generator of claim 36 wherein said rotor is of the permanent magnet type.
Claim 42
Dependent Claim
25 words
The multiple channel generator of claim 34 wherein said load means comprise multiple loads that are respectively electrically coupled to at least one power channel.
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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) | 1988-10-28 | 1989-04-29 | 1989-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-28 | 1993-04-29 | 1993-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-28 | 1997-04-29 | 1997-10-29 | $7700.00 | Window Closed / Lapsed |