Patent US3652178A successfully refreshed from Google Patents.
US3652178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the output shaft of a gas turbine
Assignee: Bennes Marrel SA
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Filing: 1969-11-20
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Granted: 1972-03-28
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Expires: 1989-11-20
Abstract
Abstract The output shaft of a gas turbine is journaled by two spacedapart bearings mounted in a support housing surrounding the shaft. The exhaust for the gas turbine is disposed radially outwardly of the support housing and an insulating sleeve is disposed intermediate the exhaust and the support housing. One of the bearings is fixed axially relative to the shaft and the support housing while the other bearing is mounted for limited axial play relative to the support housing and the shaft. Helical splines are formed on the shaft adjacent the rotor and cooperate with a circumferential sleeve to form a pump which will draw atmospheric air between the insulating sleeve and the support housing, through passages in the bearing body and direct the air against the axially movable bearing to cool the same.
Inventors
- 👤 Jack Guillot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:44
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/16; F01D25/166; F01D25/08; F01D25/12; F01D25/125; F16; F16C; F16C37/00; F16C2360/00; F16C2360/23; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
117 words
A bearing arrangement for a gas turbine having an output shaft disposed radially inwardly of the exhaust means comprising support housing means disposed intermediate said shaft and said exhaust means, insulating means intermediate said exhaust means and said support housing means, two spaced apart bearing means mounted on said support housing means and disposed in bearing engagement with said shaft, means for axially fixing one of said bearing means relative to said output shaft and said support housing means, a plurality of angularly spaced collar means supporting the other of said bearing means in said support housing means for axial movement relative thereto and passage means for supplying cooling air to the other of said bearing means.
Claim 2
Dependent Claim
117 words
A bearing arrangement for a gas turbine having an output shaft disposed radially inwardly of the exhaust means comprising support housing means disposed intermediate said shaft and said exhaust means, insulating means intermediate said exhaust means and said support housing means, two spaced apart bearing means mounted on said support housing means and disposed in bearing engagement with said shaft, means for axially fixing one of said bearing means relative to said output shaft and said support housing means, a plurality of angularly spaced collar means supporting the other of said bearing means in said support housing means for axial movement relative thereto and passage means for supplying cooling air to the other of said bearing means.
Claim 3
Dependent Claim
92 words
A bearing arrangement as set forth in claim 1 wherein said axially movable bearing means is comprised of a bearing body in engagement with said support housing means and a bearing ring in engagement with said output shaft, said bearing body having cooling passages formed therethrough, screw pump means formed on said output shaft adjacent said bearing ring for drawing atmospheric air along the full length of the exterior of said support housing means through said cooling passage means in said bearing body and directing the atmospheric air against said bearing ring.
Claim 4
Dependent Claim
37 words
A bearing ring as set forth in claim 2 further comprising fluid passage means disposed in said bearing means for supplying lubricating fluid to the bearing surfaces between said two spaced-apart bearing means and said output shaft.
Claim 5
Dependent Claim
46 words
A bearing arrangement as set forth in claim 2 further comprising additional housing means disposed intermediate said insulating means and said support housing means to define a passageway between said insulating means and said additional housing means to provide for the flow of additional cooling air.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-28 | 1975-09-27 | 1976-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-28 | 1979-09-27 | 1980-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-28 | 1983-09-27 | 1984-03-28 | $7700.00 | Window Closed / Lapsed |