Patent US3582977A successfully refreshed from Google Patents.
US3582977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamoelectric machines
Assignee: Rolls Royce Power Engineering PLC
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Filing: 1970-03-11
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Granted: 1971-06-01
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Expires: 1990-03-11
Abstract
Abstract A dynamoelectric machine having a rotor body supporting a liquid cooled rotor winding, conductors of which protrude beyond the rotor body to form end winding portions, a rotor shaft, a passage in the rotor shaft for conveying liquid coolant to the rotor winding, a duct for carrying liquid coolant outside the shaft connected to the said passage, the said duct being located in the rotor body or immediately adjacent thereto, a further duct connected to or forming a continuation of the first mentioned duct, a manifold adapted to receive liquid coolant from the further duct and mounted so that it moves with an end winding portion of the rotor winding or the rotor body and is substantially independent of shaft movement and means connecting the manifold to the rotor winding for the flow of liquid coolant.
Inventors
- 👤 David Alfred Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:19
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/04; H02K3/22
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
136 words
A dynamoelectric machine having a rotor body supporting a liquid cooled rotor winding, conductors of which protrude beyond the rotor body to form end winding portions, a rotor shaft, a passage in the rotor shaft for conveying liquid coolant to the rotor winding, a duct for carrying liquid coolant outside the shaft connected to the said passage, the said duct being located in the rotor body or immediately adjacent thereto, a further duct connected to or forming a continuation of the first mentioned duct, a manifold adapted to receive liquid coolant from the further duct and mounted so that it moves with an end winding portion of the rotor winding or the rotor body and is substantially independent of shaft movement and means connecting the manifold to the rotor winding for the flow of liquid coolant.
Claim 2
Dependent Claim
136 words
A dynamoelectric machine having a rotor body supporting a liquid cooled rotor winding, conductors of which protrude beyond the rotor body to form end winding portions, a rotor shaft, a passage in the rotor shaft for conveying liquid coolant to the rotor winding, a duct for carrying liquid coolant outside the shaft connected to the said passage, the said duct being located in the rotor body or immediately adjacent thereto, a further duct connected to or forming a continuation of the first mentioned duct, a manifold adapted to receive liquid coolant from the further duct and mounted so that it moves with an end winding portion of the rotor winding or the rotor body and is substantially independent of shaft movement and means connecting the manifold to the rotor winding for the flow of liquid coolant.
Claim 3
Dependent Claim
22 words
A machine as claimed in claim 1 in which the manifold is supported radially by a sleeve mounted on the rotor body.
Claim 4
Dependent Claim
22 words
A machine as claimed in claim 1 in which the manifold is supported radially by being directly attached to the rotor body.
Claim 5
Dependent Claim
29 words
A machine as claimed in claim 1 in which the manifold is supported radially by being attached to a retaining ring enclosing the end portion of the rotor winding.
Claim 6
Dependent Claim
27 words
A machine as claimed in claim 1 in which the manifold is attached to the end of the end winding portion so as to move axially therewith.
Claim 7
Dependent Claim
25 words
A machine as claimed in claim 1 in which the means connecting the manifold to the rotor winding comprise flexible connections of electrical iNsulating material.
Claim 8
Dependent Claim
27 words
A machine as claimed in claim 1 in which the further duct is disposed along the outside of the shaft and substantially parallel to the rotor passage.
References Cited (Backward Citations)
US3469125A
Cited
US3487243A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |