Patent US3909156A successfully refreshed from Google Patents.
US3909156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine having exhaust bearing support struts
Assignee: Westinghouse Electric Corp
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Filing: 1974-02-28
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Granted: 1975-09-30
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Expires: 1994-02-28
Abstract
Abstract A gas turbine exhaust bearing, disposed about the downstream end of a turbine shaft, is supported by four obliquely disposed elongated support struts. The struts extend between the bearing and corners of a square frame on the downstream end of the turbine. The square frame is disposed downstream of the exhaust bearing. The struts are slightly yieldable, to permit their thermal elongation relative to the square frame, and to maintain concentricity of the bearing and shaft with respect to the turbine.
Inventors
- 👤 William F Stahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:15
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/30; F01D25/16; F01D25/162
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
159 words
A gas turbine engine comprising: a rotatable shaft for supporting a rotor member, an outer casing generally coaxial with said shaft, a plurality of bearings supporting said shaft, and including at least a bearing proximate the downstream end of said shaft, a plurality of bearing support means obliquely disposed between the downstream end of said casing and said bearing proximate the downstream end of said shaft to maintain concentricity of said bearing during varying thermal conditions, said casing being generally cylindrical over a portion of its length and having a frame of generally square configuration on its downstream end, said frame being disposed axially downstream of said bearing which is proximate the downstream end of said shaft, and said bearing support means being comprised of four yieldable strut members, each of said four strut members extending from a corner of said square casing to points equidistant from one another on the circumference of the outer surface of said bearing.
Claim 2
Dependent Claim
159 words
A gas turbine engine comprising: a rotatable shaft for supporting a rotor member, an outer casing generally coaxial with said shaft, a plurality of bearings supporting said shaft, and including at least a bearing proximate the downstream end of said shaft, a plurality of bearing support means obliquely disposed between the downstream end of said casing and said bearing proximate the downstream end of said shaft to maintain concentricity of said bearing during varying thermal conditions, said casing being generally cylindrical over a portion of its length and having a frame of generally square configuration on its downstream end, said frame being disposed axially downstream of said bearing which is proximate the downstream end of said shaft, and said bearing support means being comprised of four yieldable strut members, each of said four strut members extending from a corner of said square casing to points equidistant from one another on the circumference of the outer surface of said bearing.
Claim 3
Dependent Claim
20 words
A gas turbine engine as recited in claim 1 further comprising a cowling within which said strut members are disposed.
Claim 4
Dependent Claim
27 words
A gas turbine engine as recited in claim 1 wherein the axes of said obliquely disposed yieldable strut members generally pass through the center of said bearing.
Claim 5
Dependent Claim
46 words
A gas turbine engine as recited in claim 1 further comprising a plurality of restraining members for securing said frame on the downstream side of said gas turbine engine to said generally cylindrical portion of said casing of said gas turbine engine upstream of said frame.
Claim 6
Dependent Claim
60 words
A gas turbine engine as recited in claim 4, wherein said restraining members comprise restraining rod, two of said restraining rods from each corner of said frame attach to said generally cylindrical casing, and one of said restraining rods from each of two adjacent corners on said frame is secured to said generally cylindrical casing portion at a common point.
References Cited (Backward Citations)
US2655307A
Cited
US2651172A
Cited
US2852917A
Cited
US2933893A
Cited
US3117826A
Cited
US3359646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |