US3554668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbomachine rotor
Assignee: Motors Liquidation Co
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Filing: 1969-05-12
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Granted: 1971-01-12
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Expires: 1989-05-12
Abstract
Abstract A TURBOMACHINE ROTOR COMPRISES A NUMBER OF RINGS FORMING A DRUM WITH END BELLS AT THE ENDS OF THE DRUM. EACH RING MOUNTS A ROW OF BLADES WITH CLEVIS-TYPE ROOTS WHICH EXTEND THROUGH OPENINGS IN THE RING AND WHICH ARE RETAINED BY PINS ON THE INTERIOR OF THE RING EXTENDING THROUGH HOLES IN THE ARMS OF THE BLADE ROOT CLEVISES. RINGS OF FIBROUS COMPOSITE WRAP EXTEND AROUND THE BLADE MOUNTING RINGS BETWEEN THE ARMS OF THE BLADE ROOT CLEVISES. CORRUGATED STANDOFF RINGS BETWEEN THE RING AND THE FIBROUS WRAP PROVIDE FOR SLIGHT GROWTH OF THE RING RELATIVE TO THE WRAP.
Inventors
- 👤 Joseph A Wagle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:33
CPC Classifications
F; F01; F01D; F01D21/00; F01D21/04; F01D21/045; F01D5/00; F01D5/02; F01D5/06; F01D5/066; F01D5/30; F01D5/3053
Claims Analysis
Total Claims: 0
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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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |