Patent US3569752A successfully refreshed from Google Patents.
US3569752A
Expired / Lapsed
US
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Liquid-cooled dynamoelectric machine rotor
Assignee: English Electric Co Ltd
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Filing: 1969-08-21
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Granted: 1971-03-09
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Expires: 1989-08-21
Abstract
Abstract The specification describes a dynamoelectric machine rotor in which cooling liquid is conveyed to and from the rotor windings by way of ducts in the rotor shaft ends and a plurality of cooling liquid manifolds, each such manifold is disposed in the annular space between the outer surface of the rotor shaft end and the inner faces of the rotor winding end turns and is supported against packing members supported by the rotor winding end turns. Flexible elbow pipes which convey the liquid between the shaft end and the rotor winding end turns accommodates for the relative movement between the shaft end and the end turns.
Inventors
- 👤 John Morgan Tomlinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:57
CPC Classifications
H; H02; H02K; H02K9/00; H02K9/19; H02K9/197
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
100 words
A liquid cooling system according to claim 1 in which each second flexible connector means includes: an arcuate flexible pipe supported by the coil end turns and arranged to extend circumferentially about and axially along the inner face of the end turns, and to have one end adjacent the midpoint of the length of the manifold pipe; means for connecting the said one end of the arcuate flexible pipe to the adjacent part of the manifold pipe; and flexible connecting means for connecting the other end of the arcuate flexible pipe to the axially extending duct in the shaft end.
Claim 2
Dependent Claim
56 words
A liquid cooling system according to claim 2 in which the flexible connecting means includes: an elbow pipe; means for connecting one end of the elbow pipe to the other end of the arcuate flexible pipe; and means for connecting the other end of the elbow pipe to the axially extending duct in the shaft end.
Claim 3
Dependent Claim
70 words
A liquid cooling system according to claim 2 in which each first flexible connector means includes: a series circuit of connector members arranged in the order; a flexible arcuate connector member having one end connected to one coil end turn; a rigid electrically insulating connector member; a straight flexible connector member; and second and third rigid connector members, one end of the third member being connected to the manifold pipe.
Claim 4
Dependent Claim
45 words
A liquid cooling system according to claim 2 including: a packing means between the inner face of the coil end turns; and p1 the rigid electrically insulating connector means, the straight flexible connector means, the second and third rigid connector means, and the manifold pipe.
Claim 5
Dependent Claim
32 words
A liquid cooling system according to claim 4 including packing means between the arcuate flexible pipe and the means for connecting the said one end of that pipe to the manifold pipe.
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) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |