US4015910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bolted paired vanes for turbine
Assignee: United States Department of the Air Force
•
Filing: 1976-03-09
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Granted: 1977-04-05
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Expires: 1996-03-09
Abstract
Abstract A paired vane structure for the first stator stage of a gas turbine, having the vane structure of each vane pair cast in two matching parts which are then assembled and held together by means of bolts passing through flanges on the vane inner and outer platforms. The paired vanes are assembled into the gas turbine structure in the same manner as the prior art paired vane sections.
Inventors
- 👤 Kenneth E. Harmon
- 👤 John L. Mayers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:00
CPC Classifications
F; F01; F01D; F01D9/00; F01D9/02; F01D9/04; F01D9/042
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
In the first stage of a gas turbine having an inner stator support assembly; an outer stator support assembly; a plurality of paired vane sections; means for circumferentially retaining the paired vane sections between the inner and outer stator support assemblies; means for axially retaining said paired vane sections and means for radially retaining the said paired vane sections; said paired vane sections comprising first vane members each including a turbine vane and an inner and outer vane platform; second vane members each including a vane and an inner and outer vane platform; said inner and outer vane platform of the first and second vane members including means for interconnecting the first and second vane members; said means for interconnecting the first and second vane members including flanges on the inner and outer vane platforms of the first vane members and flanges on the inner and outer vane platforms of the second blade members and means for removably securing the flanges of the first vane members to the flanges of the second vane members.
Claim 2
Dependent Claim
174 words
In the first stage of a gas turbine having an inner stator support assembly; an outer stator support assembly; a plurality of paired vane sections; means for circumferentially retaining the paired vane sections between the inner and outer stator support assemblies; means for axially retaining said paired vane sections and means for radially retaining the said paired vane sections; said paired vane sections comprising first vane members each including a turbine vane and an inner and outer vane platform; second vane members each including a vane and an inner and outer vane platform; said inner and outer vane platform of the first and second vane members including means for interconnecting the first and second vane members; said means for interconnecting the first and second vane members including flanges on the inner and outer vane platforms of the first vane members and flanges on the inner and outer vane platforms of the second blade members and means for removably securing the flanges of the first vane members to the flanges of the second vane members.
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) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |