US2929755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic blades for gas turbine engines
Assignee: Orenda Engines Ltd
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Filing: 1958-07-24
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Granted: 1960-03-22
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Expires: 1978-07-24
Abstract
No abstract record available.
Inventors
- 👤 Porter Kenneth Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:20
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/28; F01D5/282; F01D5/30; F01D5/3007; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028; Y10T156/1031; Y10T156/1033; Y10T156/1089; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49336; Y10T29/49337
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
A METHOD OF MOULDING A REINFORCED PLASTIC BLADE FOR USE IN GAS TURBINE ENGINES COMPRISING THE STEPS OF DOUBLING FILAMENTARY ROVINGS ABOVE A REINFORCING BEAM, APPLYING A PLASTIC MATERIAL ABOUT THE REINFORCING BEAM AND ABOUT THE ROVINGS OVER A MINOR PORTION OF THEIR LENGTH ADJACENT THE REINFORCING BEAM, MOULDING THE PLASTIC IN A FIRST MOULDING OPERATION TO FORM A RIGID CORE AT THE ROOT PORTION OF THE BLADE, THE DIMENSIONS OF THE CORE BEING LESS THAN THE DIMENSIONS OF THE ROOT PORTION OF THE FINISH BLADE, THE RIGID CORE TERMINATING AT A SURFACE PARALLEL TO THE SURFACE OF THE ROOT PLATFORM OF THE FINISHED BLADE WITH THE ROVINGS EXTENDING FROM THIS SURFACE ALONG A LINE CONFORMING TO THE GENERAL AEROFOIL CONTOUR OF THE FINISHED BLADE, THEN, IN A SUBSEQUENT OPERATION ALIGNING THAT PORTION OF THE ROVINGS EXTENDING FROM THE MOULDED CORE TO LIE ALONG THE LINES PARALLEL TO THE LONGITUDINAL THE CORE THE BLADE, APPLYING TENSION THERETO, SURROUNDING THE CORE AND THE ROVINGS WITH PLASTIC MATERIAL, MOULDING THE ENTIRE BLADE IN A SECOND MOULDING OPERATION TO THE DESIRED PROFILE IN A FORM WHILE MAINTAINING THE ROVINGS UNDER TENSION AND FINALLY REMOVING THE MOULDED BLADE FROM ITS FORM AND TRIMMING IT TO FINAL SIZE.
Claim 2
Independent Claim
203 words
A METHOD OF MOULDING A REINFORCED PLASTIC BLADE FOR USE IN GAS TURBINE ENGINES COMPRISING THE STEPS OF DOUBLING FILAMENTARY ROVINGS ABOVE A REINFORCING BEAM, APPLYING A PLASTIC MATERIAL ABOUT THE REINFORCING BEAM AND ABOUT THE ROVINGS OVER A MINOR PORTION OF THEIR LENGTH ADJACENT THE REINFORCING BEAM, MOULDING THE PLASTIC IN A FIRST MOULDING OPERATION TO FORM A RIGID CORE AT THE ROOT PORTION OF THE BLADE, THE DIMENSIONS OF THE CORE BEING LESS THAN THE DIMENSIONS OF THE ROOT PORTION OF THE FINISH BLADE, THE RIGID CORE TERMINATING AT A SURFACE PARALLEL TO THE SURFACE OF THE ROOT PLATFORM OF THE FINISHED BLADE WITH THE ROVINGS EXTENDING FROM THIS SURFACE ALONG A LINE CONFORMING TO THE GENERAL AEROFOIL CONTOUR OF THE FINISHED BLADE, THEN, IN A SUBSEQUENT OPERATION ALIGNING THAT PORTION OF THE ROVINGS EXTENDING FROM THE MOULDED CORE TO LIE ALONG THE LINES PARALLEL TO THE LONGITUDINAL THE CORE THE BLADE, APPLYING TENSION THERETO, SURROUNDING THE CORE AND THE ROVINGS WITH PLASTIC MATERIAL, MOULDING THE ENTIRE BLADE IN A SECOND MOULDING OPERATION TO THE DESIRED PROFILE IN A FORM WHILE MAINTAINING THE ROVINGS UNDER TENSION AND FINALLY REMOVING THE MOULDED BLADE FROM ITS FORM AND TRIMMING IT TO FINAL SIZE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |