US3281116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor and blade assemblies
Assignee: Rolls Royce PLC
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Filing: 1966-02-02
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Granted: 1966-10-25
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Expires: 1986-02-02
Abstract
No abstract record available.
Inventors
- 👤 John G Keenan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:19
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/021; F01D5/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A ROTARY AND BLADE ASSEMBLY COMPRISING A SHAFT, TWO DISCS EACH HAVING A PLURALITY OF SERRATIONS ADJACENT THE PERIPHERY OF THE OUTER FACES THEREOF, MEANS MOUNTING THE DISCS CO-AXIALLY ON THE SHAFT, A PLURALITY OF BLADES EACH HAVING A FORKED ROOT PORTION, A PLURALITY OF SERRATIONS ON EACH INTERNAL FACE OF THE FORKED ROOT PORTIONS OF THE BLADES, MEANS DISPOSED ON THE INTERNAL FACES OF THE DISCS FOR PRODUCING RELATIVE AXIAL MOVEMENT OF THE DISCS WHEN THE DISCS ARE RELATIVELY ROTATED, THE DISCS AND BLADES BEING SO ARRANGED THAT WHEN THE DISCS ARE MOVED AXIALLY APART THE SERRATIONS ON THE FORKED ROOT PORTIONS OF THE BLADES ENGAGE THE SERRATIONS ON THE FACES OF THE DISC.
Claim 2
Dependent Claim
115 words
A ROTARY AND BLADE ASSEMBLY COMPRISING A SHAFT, TWO DISCS EACH HAVING A PLURALITY OF SERRATIONS ADJACENT THE PERIPHERY OF THE OUTER FACES THEREOF, MEANS MOUNTING THE DISCS CO-AXIALLY ON THE SHAFT, A PLURALITY OF BLADES EACH HAVING A FORKED ROOT PORTION, A PLURALITY OF SERRATIONS ON EACH INTERNAL FACE OF THE FORKED ROOT PORTIONS OF THE BLADES, MEANS DISPOSED ON THE INTERNAL FACES OF THE DISCS FOR PRODUCING RELATIVE AXIAL MOVEMENT OF THE DISCS WHEN THE DISCS ARE RELATIVELY ROTATED, THE DISCS AND BLADES BEING SO ARRANGED THAT WHEN THE DISCS ARE MOVED AXIALLY APART THE SERRATIONS ON THE FORKED ROOT PORTIONS OF THE BLADES ENGAGE THE SERRATIONS ON THE FACES OF THE DISC.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |