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US3981615A
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Continuous connection device for the mobile blades of a turbo-machine
Assignee: GROUPE EUROPEEN POUR LA TECHNIQUE DES TURBINES A VAPEUR GETT
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Filing: 1975-11-03
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Granted: 1976-09-21
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Expires: 1995-11-03
Abstract
Abstract Continuous connection device for the mobile turbine blades of a turbo-mace, characterized in that the caps of the turbine blades comprise recesses accomodating clamping blades whose ends press against the neighbouring caps, becoming deformed elastically. The invention applies more particularly to elastic fluid turbines.
Inventors
- 👤 Salomon Krol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:36
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/22; F01D5/225
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
114 words
In a continuous connection arrangement for the mobile turbine blades of the wheel of a turbo-machine in which each turbine blade is provided with a cap which is integral with it and the turbine blades are installed on the wheel with the caps clamped against each other, the improvement wherein at least one turbine blade cap in two comprises at least one recess in which is inserted a flexible clamping blade which may be elastically deformed therein, said clamping blade having at least one free end which overlaps from the blade cap in a tangential direction and presses against the cap of a neighboring turbine blade, causing an elastic deformation of said clamping blade.
Claim 2
Dependent Claim
114 words
In a continuous connection arrangement for the mobile turbine blades of the wheel of a turbo-machine in which each turbine blade is provided with a cap which is integral with it and the turbine blades are installed on the wheel with the caps clamped against each other, the improvement wherein at least one turbine blade cap in two comprises at least one recess in which is inserted a flexible clamping blade which may be elastically deformed therein, said clamping blade having at least one free end which overlaps from the blade cap in a tangential direction and presses against the cap of a neighboring turbine blade, causing an elastic deformation of said clamping blade.
Claim 3
Dependent Claim
23 words
The connection arrangement according to claim 1, wherein said clamping blade is rigidly held in said recess over a portion of its length.
Claim 4
Dependent Claim
48 words
The connection arrangement according to claim 2, wherein said clamping blade is a blade which is curved in its middle and held thereby in said recess and wherein each of the ends of said clamping blade presses respectively on the cap of one of the neighbouring turbine blades.
Claim 5
Dependent Claim
51 words
The connection arrangement according to claim 3, wherein the curved clamping blade has in longitudinal cross-section, the shape of a curved segment exactly fitted in its middle in said recess and wherein a clearance increasing from the middle towards the ends is provided between the curved clamping blade and its recess.
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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) | 1979-09-21 | 1980-03-22 | 1980-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-21 | 1984-03-22 | 1984-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-21 | 1988-03-22 | 1988-09-21 | $7700.00 | Window Closed / Lapsed |