Patent US3784894A successfully refreshed from Google Patents.
US3784894A
Expired / Lapsed
US
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Alternators
Assignee: Lucas Support Services Ltd
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Filing: 1972-06-05
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Granted: 1974-01-08
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Expires: 1992-06-05
Abstract
Abstract An electrical power supply system comprising an alternator having a closed output winding divided into at least five phase windings and including an equal number of pairs of diode rectifiers for producing a d.c. output. Tappings are provided on the winding for additionally providing a balanced multi-phase alternating current output.
Inventors
- 👤 C Silvertown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:30
CPC Classifications
H; H02; H02K; H02K19/00; H02K19/16; H02K19/34
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
52 words
An alternator for producing two multi phase alternating current supplies having differing numbers of phases and comprising a closed winding composed of a number of phase windings equal to that of the required supply having the higher number of phases, and tappings on the winding positioned to produce the second multi-phase supply.
Claim 2
Dependent Claim
52 words
An alternator for producing two multi phase alternating current supplies having differing numbers of phases and comprising a closed winding composed of a number of phase windings equal to that of the required supply having the higher number of phases, and tappings on the winding positioned to produce the second multi-phase supply.
Claim 3
Dependent Claim
45 words
A power supply system comprising an alternator having a closed output winding divided into at least five phase windings, an equal number of pairs of rectifiers for producing a d.c. outPut and tappings on said winding for producing a balanced multi phase alternating current output.
Claim 4
Dependent Claim
45 words
A power supply system comprising an alternator having a closed output winding divided into at least five phase windings, an equal number of pairs of rectifiers for producing a d.c. outPut and tappings on said winding for producing a balanced multi phase alternating current output.
Claim 5
Dependent Claim
33 words
A power supply system as claimed in claim 2 in which one of the phase interconnections of the winding is chosen as one of the lines of the multi phase alternating current output.
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) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |