US3219314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blade assemblies for fluid flow machines
Assignee: Rolls Royce PLC
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Filing: 1965-02-16
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Granted: 1965-11-23
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Expires: 1985-02-16
Abstract
No abstract record available.
Inventors
- 👤 Petrie James Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:17
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/22; F01D5/225; F01D5/14; F01D5/18; F01D5/187; F01D5/30; F01D5/3023; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A BLADE ASSEMBLY ADAPTED TO FORM PART OF A FLUID FLOW MACHINE, AND COMPRISING A BLADE SUPPORT MEMBER, A PLURALITY OF ANGULARLY SPACED APART BLADES CARRIED BY THE BLADE SUPPORT MEMBER, EACH OF SAID BLADES HAVING AN INTERNALLY THREADED SHANK, A PLURALITY OF PLUGS EACH OF WHICH CONNECTS A BLADE TO THE BLADE SUPPORT MEMBER, AND EACH OF WHICH HAS AXIAL ENDS AND TWO EXTERNALLY THREADED PORTIONS OF OPPOSITE HAND WHICH EXTEND TOWARDS RESPECTIVE AXIAL ENDS OF THE PLUG, SAID PORTIONS BEING THREADABLY CONNECTED TO THE BLADE SUPPORT MEMBER AND TO THE INTERNALLY THREADED SHANK OF THE RESPECTIVE BLADE, AND MEANS ON EACH PLUG INTERMEDIATE SAID THREADED PORTIONS AND ABUTTING SUBSTANTIALLY THE ENTIRE AREA OF THE END OF THE SHANK OF SAID BLADE AND ALSO ABUTTING SAID SUPPORT MEMBER, SAID ABUTTING MEANS BEING ENGAGEABLE FOR ROTATING SAID PLUG SO AS TO PERMIT THE PLUG TO BE DISCONNECTED SIMULTANEOUSLY FROM THE BLADE SUPPORT MEMBER AND FROM THE RESPECTIVE BLADE.
Claim 2
Dependent Claim
158 words
A BLADE ASSEMBLY ADAPTED TO FORM PART OF A FLUID FLOW MACHINE, AND COMPRISING A BLADE SUPPORT MEMBER, A PLURALITY OF ANGULARLY SPACED APART BLADES CARRIED BY THE BLADE SUPPORT MEMBER, EACH OF SAID BLADES HAVING AN INTERNALLY THREADED SHANK, A PLURALITY OF PLUGS EACH OF WHICH CONNECTS A BLADE TO THE BLADE SUPPORT MEMBER, AND EACH OF WHICH HAS AXIAL ENDS AND TWO EXTERNALLY THREADED PORTIONS OF OPPOSITE HAND WHICH EXTEND TOWARDS RESPECTIVE AXIAL ENDS OF THE PLUG, SAID PORTIONS BEING THREADABLY CONNECTED TO THE BLADE SUPPORT MEMBER AND TO THE INTERNALLY THREADED SHANK OF THE RESPECTIVE BLADE, AND MEANS ON EACH PLUG INTERMEDIATE SAID THREADED PORTIONS AND ABUTTING SUBSTANTIALLY THE ENTIRE AREA OF THE END OF THE SHANK OF SAID BLADE AND ALSO ABUTTING SAID SUPPORT MEMBER, SAID ABUTTING MEANS BEING ENGAGEABLE FOR ROTATING SAID PLUG SO AS TO PERMIT THE PLUG TO BE DISCONNECTED SIMULTANEOUSLY FROM THE BLADE SUPPORT MEMBER AND FROM THE RESPECTIVE BLADE.
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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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |