Patent US3220697A successfully refreshed from Google Patents.
US3220697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow turbine or compressor vane
Assignee: General Electric Co
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Filing: 1963-08-30
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Granted: 1965-11-30
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Expires: 1983-08-30
Abstract
No abstract record available.
Inventors
- 👤 Smuland Robert John
- 👤 Davidson Ralph Lester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:08
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/18; F01D5/187; F05; F05D; F05D2260/00; F05D2260/20; F05D2260/221; F05D2260/2214; F05D2260/22141; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A VANE FOR USE IN AN AXIAL FLOW TURBINE OR COMPRESSOR COMPRISING: A THIN WALLED RADIALLY EXTENDING VANE BODY HAVING AXIALLY SPACED LEADING AND TRAILING EDGES, THE WALLS OF SAID VANE BODY DEFINING AN INTERIOR CAVITY THEREIN, A RADIAL PARTITION WITHIN SAID VANE BODY DIVIDING SAID CAVITY INTO A FIRST REGION ADJACENT SAID LEADING AND A SECOND REGION ADJACENT SAID TRAILING EDGE, FIRST AND SECOND PLURALITIES OF AXIAL BAFFLES IN SAID FIRST REGION ALTERNATING IN RADIALLY SPACED INTERDIGITATED RELATIONSHIP, EACH OF SAID FIRST PLURALITY OF BAFFLES CONTACTING SAID LEADING EDGE AND EXTENDING AXIALLY THEREFROM INTO PROXMITY TO SAID RADIAL PARTITION TO FORM THEREBETWEEN A RADIAL OPENING, AND EACH OF SAID SECOND PLURALITY OF BAFFLES CONTACTING SAID RADIAL PARTITION AND EXTENDING AXIALLY THEREFROM INTO PROXIMITY TO SAID LEADING EDGE TO FORM THEREBETWEEN A RADIAL OPENING,
Claim 2
Dependent Claim
134 words
A VANE FOR USE IN AN AXIAL FLOW TURBINE OR COMPRESSOR COMPRISING: A THIN WALLED RADIALLY EXTENDING VANE BODY HAVING AXIALLY SPACED LEADING AND TRAILING EDGES, THE WALLS OF SAID VANE BODY DEFINING AN INTERIOR CAVITY THEREIN, A RADIAL PARTITION WITHIN SAID VANE BODY DIVIDING SAID CAVITY INTO A FIRST REGION ADJACENT SAID LEADING AND A SECOND REGION ADJACENT SAID TRAILING EDGE, FIRST AND SECOND PLURALITIES OF AXIAL BAFFLES IN SAID FIRST REGION ALTERNATING IN RADIALLY SPACED INTERDIGITATED RELATIONSHIP, EACH OF SAID FIRST PLURALITY OF BAFFLES CONTACTING SAID LEADING EDGE AND EXTENDING AXIALLY THEREFROM INTO PROXMITY TO SAID RADIAL PARTITION TO FORM THEREBETWEEN A RADIAL OPENING, AND EACH OF SAID SECOND PLURALITY OF BAFFLES CONTACTING SAID RADIAL PARTITION AND EXTENDING AXIALLY THEREFROM INTO PROXIMITY TO SAID LEADING EDGE TO FORM THEREBETWEEN A RADIAL OPENING,
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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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |