Patent US3882334A successfully refreshed from Google Patents.
US3882334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid Cooled dynamoelectric machine frame and stator assembly
Assignee: Motors Liquidation Co
•
Filing: 1974-02-08
•
Granted: 1975-05-06
•
Expires: 1994-02-08
Abstract
Abstract The main frame and stator assembly of a dynamoelectric machine is described which is comprised of four cylindrical sleeves assembled one inside the other. The outer sleeve has a pair of punched holes serving as fluid inlet and outlet ports. The two sleeves between the inner and outer sleeves have punched patterns of elongated holes which overlap to form interconnecting passageways between the inlet and outlet ports. The motor stator is press fitted within the inner sleeve which provides for heat transfer between the stator and coolant within the passageways.
Inventors
- 👤 William J Newill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:22
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/20; H02K5/203
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
137 words
A cooling arrangement for a dynamoelectric machine comprising: a dynamoelectric machine frame including an inner cylindrical sleeve, a first intermediate cylindrical sleeve circumjacent the inner sleeve, a second intermediate cylindrical sleeve circumjacent the first intermediate sleeve and an outer cylindrical sleeve circumjacent the second intermediate sleeve, the outer sleeve having a fluid inlet port and a fluid outlet port, the first intermediate sleeve having a first pattern of openings therein and the second intermediate sleeve having a second pattern of openings therein overlapping respective ones of the openings in the first pattern and the inlet and outlet ports to define an interconnecting tortuous fluid path between the inlet and outlet ports; and a dynamoelectric machine stator assembled within the inner sleeve, the inner sleeve providing heat transfer between the stator and fluid circulated within the fluid path.
Claim 2
Dependent Claim
137 words
A cooling arrangement for a dynamoelectric machine comprising: a dynamoelectric machine frame including an inner cylindrical sleeve, a first intermediate cylindrical sleeve circumjacent the inner sleeve, a second intermediate cylindrical sleeve circumjacent the first intermediate sleeve and an outer cylindrical sleeve circumjacent the second intermediate sleeve, the outer sleeve having a fluid inlet port and a fluid outlet port, the first intermediate sleeve having a first pattern of openings therein and the second intermediate sleeve having a second pattern of openings therein overlapping respective ones of the openings in the first pattern and the inlet and outlet ports to define an interconnecting tortuous fluid path between the inlet and outlet ports; and a dynamoelectric machine stator assembled within the inner sleeve, the inner sleeve providing heat transfer between the stator and fluid circulated within the fluid path.
Claim 3
Dependent Claim
177 words
A cooling arrangement for a dynamoelectric machine comprising: a dynamoelectric machine frame including an inner cylindrical sleeve, a first intermediate sleeve circumjacent the inner sleeve, a second intermediate sleeve circumjacent the first intermediate sleeve and an outer sleeve circumjacent the second intermediate sleeve, the radius respective adjacent surfaces of the adjacent sleeves being generally equal, the outer sleeve having a fluid inlet port and a fluid outlet port, the first intermediate sleeve having a first pattern of elongated openings therein extending in a first direction and the second intermediate sleeve having a second pattern of elongated openings therein extending in a second direction substantially perpendicular to the first pattern of elongated openings and overlapping respective ones of the openings in the first pattern and the inlet and outlet ports to define at least one interconnecting tortuous fluid path between the inlet and outlet ports; means for sealing the ends of the cylindrical sleeves; and a dynamoelectric stator assembled within the inner sleeve, the inner sleeve providing heat transfer between the stator and fluid within the fluid path.
Claim 4
Dependent Claim
177 words
A cooling arrangement for a dynamoelectric machine comprising: a dynamoelectric machine frame including an inner cylindrical sleeve, a first intermediate sleeve circumjacent the inner sleeve, a second intermediate sleeve circumjacent the first intermediate sleeve and an outer sleeve circumjacent the second intermediate sleeve, the radius respective adjacent surfaces of the adjacent sleeves being generally equal, the outer sleeve having a fluid inlet port and a fluid outlet port, the first intermediate sleeve having a first pattern of elongated openings therein extending in a first direction and the second intermediate sleeve having a second pattern of elongated openings therein extending in a second direction substantially perpendicular to the first pattern of elongated openings and overlapping respective ones of the openings in the first pattern and the inlet and outlet ports to define at least one interconnecting tortuous fluid path between the inlet and outlet ports; means for sealing the ends of the cylindrical sleeves; and a dynamoelectric stator assembled within the inner sleeve, the inner sleeve providing heat transfer between the stator and fluid within the fluid path.
References Cited (Backward Citations)
US1342179A
Cited
US2334976A
Cited
US2422824A
Cited
US2780737A
Cited
US3009972A
Cited
US3047754A
Cited
US3439201A
Cited
US3567975A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |