US3562564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brushless oil-colled generator
Assignee: Bendix Corp
•
Filing: 1969-11-10
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Granted: 1971-02-09
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Expires: 1989-11-10
Abstract
Abstract A brushless DC oil cooled generator utilizing delta windings displaced by 30 electrical degrees, feeding through a full wave rectifier system to a common bus. Also improved means are provided for cooling and mounting the rectifiers.
Inventors
- 👤 Frederick M Potter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:10
CPC Classifications
H; H02; H02K; H02K19/00; H02K19/16; H02K19/34; H02K11/00; H02K11/04; H02K11/042; H02K9/00; H02K9/19; H02K9/197
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
159 words
A brushless DC generator comprising a housing, a rotor mounteD for rotation in said housing, a main generator stator winding mounted in said housing, a cooperating main generator rotor winding mounted on said rotor, an exciter stator winding mounted in said housing, an exciter rotor winding mounted on said rotor, means including diodes connecting the output from said exciter rotor winding to said main generator rotor winding, a pair of heat sinks mounted in and insulated from said housing, a plurality of rectifiers mounted on said heat sinks, means connecting the output from said main generator stator windings to said rectifiers, channels in said rotor, in said heat sinks and in said housing, and means connecting said channels in said rotor to the channels is said heat sinks and connecting the channels in said heat sinks to the channels in said housing to circulate a cooling fluid therein to conduct heat from all of said windings and said rectifiers.
Claim 2
Dependent Claim
159 words
A brushless DC generator comprising a housing, a rotor mounteD for rotation in said housing, a main generator stator winding mounted in said housing, a cooperating main generator rotor winding mounted on said rotor, an exciter stator winding mounted in said housing, an exciter rotor winding mounted on said rotor, means including diodes connecting the output from said exciter rotor winding to said main generator rotor winding, a pair of heat sinks mounted in and insulated from said housing, a plurality of rectifiers mounted on said heat sinks, means connecting the output from said main generator stator windings to said rectifiers, channels in said rotor, in said heat sinks and in said housing, and means connecting said channels in said rotor to the channels is said heat sinks and connecting the channels in said heat sinks to the channels in said housing to circulate a cooling fluid therein to conduct heat from all of said windings and said rectifiers.
Claim 3
Dependent Claim
28 words
The combination as set forth in claim 1 in which said main generator stator winding comprises two groups of three phase delta windings spaced 30 electrical degrees apart.
Claim 4
Dependent Claim
24 words
The combination as set forth in claim 2 in which each end of said delta windings are connected directly to respective pairs of rectifiers.
Claim 5
Dependent Claim
19 words
The combination as set forth in claim 3 in which there are twelve positive rectifiers and twelve negative rectifiers.
Claim 6
Dependent Claim
21 words
The combination as set forth in claim 2 in which each group of delta windings include two windings in each group.
Claim 7
Dependent Claim
32 words
The combination as set forth in claim 1 in which said heat sinks are circularly and each heat sink includes a pair of a parallel channels extending substantially around the circumference thereof.
Claim 8
Dependent Claim
18 words
The combination as set forth in claim l and including a pump connected for circulating said cooling fluid.
Claim 9
Dependent Claim
18 words
The combination as set forth in claim l in which said heat sinks are insulated from each other.
Claim 10
Dependent Claim
19 words
The combination as set forth in claim l and including bus bars connecting the respective pairs of rectifiers together.
Claim 11
Dependent Claim
20 words
The combination as set forth in claim l in which the channels in said housing and rotor are spiral grooves.
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |