Patent US3157385A successfully refreshed from Google Patents.
US3157385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blade locking means for turbines or compressors
Assignee: Associated Electrical Industries Ltd
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Filing: 1962-09-24
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Granted: 1964-11-17
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Expires: 1982-09-24
Abstract
No abstract record available.
Inventors
- 👤 Jenson George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:25
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/30; F01D5/32; F01D5/323
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A TURBO-MACHINE BLADED ROTOR DISC, COMPRISING: (A) A CENTRAL DISC; (B) A MULTIPLICITY OF BLADE ELEMENTS, EACH INCLUDING A BLADE AND A ROOT AT ONE END OF THE BLADE; (C) AN EQUAL MULTIPLICITY OF SUBSTANTIALLY AXIALLY DIRECTED SLOTS IN AND SPACED EVENLY AROUND THE PERIPHERY OF THE DISC, TH ROOTS OF THE BLADES, BEING INSERTED AXIALLY INTO THE SLOTS AND EACH SLOT AND ROOT HAVING SIDES OF COMPLEMENTARY SHAPES WHICH COOPERATE TO PREVENT RADIAL MOVEMENT OF THE BLADE ELEMENT; (D) AN ANNULAR DOVETAIL GROOVE IN EACH AXIALLY DIRECTED FACE OF THE DISC, THE RADIUS OF THE RADIALLY INNERMOST EDGE OF THE GROOVE BEING A LEAST EQUAL TO THE RADIUS OF A HYPOTHETICAL CIRCLE JOINING THE BASES OF THE SLOTS, SO THAT THE GROOVE OPENS INTO EACH SLOTS;
Claim 2
Dependent Claim
127 words
A TURBO-MACHINE BLADED ROTOR DISC, COMPRISING: (A) A CENTRAL DISC; (B) A MULTIPLICITY OF BLADE ELEMENTS, EACH INCLUDING A BLADE AND A ROOT AT ONE END OF THE BLADE; (C) AN EQUAL MULTIPLICITY OF SUBSTANTIALLY AXIALLY DIRECTED SLOTS IN AND SPACED EVENLY AROUND THE PERIPHERY OF THE DISC, TH ROOTS OF THE BLADES, BEING INSERTED AXIALLY INTO THE SLOTS AND EACH SLOT AND ROOT HAVING SIDES OF COMPLEMENTARY SHAPES WHICH COOPERATE TO PREVENT RADIAL MOVEMENT OF THE BLADE ELEMENT; (D) AN ANNULAR DOVETAIL GROOVE IN EACH AXIALLY DIRECTED FACE OF THE DISC, THE RADIUS OF THE RADIALLY INNERMOST EDGE OF THE GROOVE BEING A LEAST EQUAL TO THE RADIUS OF A HYPOTHETICAL CIRCLE JOINING THE BASES OF THE SLOTS, SO THAT THE GROOVE OPENS INTO EACH SLOTS;
References Cited (Backward Citations)
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US2713991A
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US2761648A
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US2994507A
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US3045329A
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US3039740A
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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) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |