US3686523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamoelectric machine apparatus, such as brushless exciter for a. c. generator, with flexible tape capacitive means
Assignee: Westinghouse Electric Corp
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Filing: 1971-04-21
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Granted: 1972-08-22
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Expires: 1991-04-21
Abstract
Abstract A capacitor tape is applied over the shaft of a brushless exciter and is connected to provide interphase capacitance with or without an additional resistive tape connected in series with each capacitor to provide damping resistance. The voltage suppressor functions of the capacitors can also be obtained by winding a tape to provide a distributed capacitance directly in the A.C. exciter winding. A flexible capacitive tape in accordance with this invention can be variously applied in dynamoelectric machine apparatus.
Inventors
- 👤 Dale I Gorden
- 👤 Lee W Smart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:17
CPC Classifications
H; H02; H02P; H02P9/00; H02P9/14; H02P9/26; H02P9/30; H02P9/302; H02K; H02K11/00; H02K11/04; H02K11/042
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
64 words
Dynamoelectric machine apparatus comprising: a number of stationary and rotating elements including electrically conductive members, said rotating elements including a shaft supporting others of said rotating elements; a flexible capacitive tape including a plurality of interleaved metal foil and dielectric film layers, said tape being wrapped and mechanically secured on said shaft and electrically connected to at least one of said electrically conductive members.
Claim 2
Dependent Claim
64 words
Dynamoelectric machine apparatus comprising: a number of stationary and rotating elements including electrically conductive members, said rotating elements including a shaft supporting others of said rotating elements; a flexible capacitive tape including a plurality of interleaved metal foil and dielectric film layers, said tape being wrapped and mechanically secured on said shaft and electrically connected to at least one of said electrically conductive members.
Claim 3
Dependent Claim
69 words
The subject matter of claim 1 wherein: said machine is a polyphase A.C. machine with polyphase conductive elements including a plurality of phase windings on an armature on said shaft and a plurality of phase conductors electrically connected with said phase windings and running along said shaft; and said tape is in close physical relationship to at least some of said polyphase conductive elements and is electrically connected thereto.
Claim 4
Dependent Claim
83 words
In an excitation system for a brUshless generator, the combination comprising: a shaft; a rotating armature mounted on said shaft; a rotating rectifier wheel supported on said shaft; a plurality of phase conductors extending along said shaft in insulating relationship thereto and electrically connected between said armature and said rectifier wheel; a flexible capacitive tape wrapped in intimate association with said phase conductors with selective connection between said capacitive tape and said phase conductors to provide a capacitor between each pair of phases.
Claim 5
Dependent Claim
83 words
In an excitation system for a brUshless generator, the combination comprising: a shaft; a rotating armature mounted on said shaft; a rotating rectifier wheel supported on said shaft; a plurality of phase conductors extending along said shaft in insulating relationship thereto and electrically connected between said armature and said rectifier wheel; a flexible capacitive tape wrapped in intimate association with said phase conductors with selective connection between said capacitive tape and said phase conductors to provide a capacitor between each pair of phases.
Claim 6
Dependent Claim
17 words
The subject matter of claim 3 wherein: said capacitive tape encircles the phase conductors on said shaft.
Claim 7
Dependent Claim
27 words
The subject matter of claim 3 further comprising: a flexible resistive tape wrapped around said phase conductors and electrically connected in series with each said capacitive tape.
Claim 8
Dependent Claim
52 words
In an excitation system for a brushless generator, the combination comprising: a shaft; a rotating armature mounted on said shaft and having multiple phase windings therein; a capacitive tape wrapped around said phase windings with selective interconnection therebetween to provide a capacitor in parallel with the inductance of each of said windings.
Claim 9
Dependent Claim
52 words
In an excitation system for a brushless generator, the combination comprising: a shaft; a rotating armature mounted on said shaft and having multiple phase windings therein; a capacitive tape wrapped around said phase windings with selective interconnection therebetween to provide a capacitor in parallel with the inductance of each of said windings.
Claim 10
Dependent Claim
32 words
The subject matter of claim 6 further comprising: a resistive tape wrapped around said phase windings with connection with said capacitive tape to provide a resistor in series with each said capacitor.
Claim 11
Dependent Claim
60 words
Dynamoelectric machine apparatus comprising: a number of stationary and rotating elements including electrically conductive members, said rotating elements including an armature supported on a shaft, said armature having at least one conductive winding thereon; a flexible capacitive tape including a plurality of interleaved metal foil and dielectric film layers, said tape being wrapped on and mechanically secured to said winding.
Claim 12
Dependent Claim
60 words
Dynamoelectric machine apparatus comprising: a number of stationary and rotating elements including electrically conductive members, said rotating elements including an armature supported on a shaft, said armature having at least one conductive winding thereon; a flexible capacitive tape including a plurality of interleaved metal foil and dielectric film layers, said tape being wrapped on and mechanically secured to said winding.
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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) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |