Patent US3733503A successfully refreshed from Google Patents.
US3733503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil spray cooled, brushless, variable speed direct current generator
Assignee: Bendix Corp
•
Filing: 1972-06-16
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Granted: 1973-05-15
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Expires: 1992-06-16
Abstract
Abstract An oil cooled generator has a plurality of diodes for converting alternating current power to direct current power. The diodes are mounted on heat sinks exteriorly of the generator so the diodes can be assembled to and disassembled from the generator without dismantling the generator. The heat sinks are cooled by spraying oil on finned surfaces of the heat sinks inside the generator and by circulating cooling oil at turbulent velocity between the diodes and heat sinks over major portions of the diode mounting surfaces for directly cooling the diodes and heat sinks.
Inventors
- 👤 F Potter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:14
CPC Classifications
H; H02; H02K; H02K9/00; H02K9/19; H02K11/00; H02K11/04; H02K11/042
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
61 words
A dynamo-electric machine comprising an oil-cooled generator providing alternating current power, heat sinks mounted on the generator, rectifying means mounted on the heat sinks in heat conducting relationship thereto for converting the alternating current power to direct current power, and means for conducting cooling oil between the heat sinks and rectifying means for directly cooling the heat sinks and rectifying means.
Claim 2
Dependent Claim
61 words
A dynamo-electric machine comprising an oil-cooled generator providing alternating current power, heat sinks mounted on the generator, rectifying means mounted on the heat sinks in heat conducting relationship thereto for converting the alternating current power to direct current power, and means for conducting cooling oil between the heat sinks and rectifying means for directly cooling the heat sinks and rectifying means.
Claim 3
Dependent Claim
35 words
A dynamo-electric machine as described in claim 1 in which the rectifying means are mounted exteriorly of the generator so that the rectifying means can be assembled to and disassembled from the generator exteriorly thereof.
Claim 4
Dependent Claim
22 words
A dynamo-electric machine as described in claim 2 including means for spraying cooling oil on the heat sinks interiorly of the generator.
Claim 5
Dependent Claim
25 words
A dynamo-electric machine as described in claim 2 in which fins are formed on faces of the heat sinks sprayed by oil to facilitate cooling.
Claim 6
Dependent Claim
18 words
A dynamo-electric machine as described in claim 2 in which the rectifying means comprises a plurality of diodes.
Claim 7
Dependent Claim
20 words
A dynamo-electric machine as described in claim 1 which includes means for electrically insulating the heat sinks from the generator.
Claim 8
Dependent Claim
37 words
A dynamo-electric machine as described in claim 6 in which heat sink is connected to a generator output terminal and a pair of oppositely poled diodes are mounted on each heat sink in electrical conducting relationship thereto.
Claim 9
Dependent Claim
28 words
A dynamo-electric machine as described in claim 1 including means for circulating cooling oil at turbulent velocity over major portions of the mounting surfaces of the rectifying means.
Claim 10
Dependent Claim
72 words
A dynamo-electric machine comprising an oil cooled generator for providing alternating current power, heat sinks mounted on the generator, rectifying means for converting the alternating current power to direct current power mounted on the heat sinks in heat conducting relationship thereto so that heat from the rectifying means is transferred to the heat sinks, and means for spraying cooling oil on the heat sinks for cooling the heat sinks and rectifying means.
Claim 11
Dependent Claim
72 words
A dynamo-electric machine comprising an oil cooled generator for providing alternating current power, heat sinks mounted on the generator, rectifying means for converting the alternating current power to direct current power mounted on the heat sinks in heat conducting relationship thereto so that heat from the rectifying means is transferred to the heat sinks, and means for spraying cooling oil on the heat sinks for cooling the heat sinks and rectifying means.
Claim 12
Dependent Claim
57 words
A dynamo-electric machine as described in claim 9 in which the rectifying means are mounted exteriorly of the generator so that the rectifying means can be assembled to and disassembled from the generator exteriorly thereof, and the heat sinks are mounted so that cooling oil is sprayed on the heat sinks from the interior of the generator.
Claim 13
Dependent Claim
25 words
A dynamo-electric machine as described in claim 10 in which fins are formed on faces of the heat sinks sprayed by oil to facilitate cooling.
References Cited (Backward Citations)
US2942165A
Cited
US3145314A
Cited
US3275921A
Cited
GB1017026A
Cited
US3369166A
Cited
US3562564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |