US3628890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressor blades
Assignee: General Electric Co
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Filing: 1969-09-04
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Granted: 1971-12-21
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Expires: 1989-09-04
Abstract
Abstract An axial flow compressor rotor blade is formed by two separable components. One component is fabricated of metal and forms the leading edge portion of the cambered airfoil and the mounting tang of the blade. The other component is formed of a fibercomposite material and forms the remainder of the cambered airfoil.
Inventors
- 👤 Edwin D Sayre
- 👤 Lewis J Stoffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:32
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/28; F01D5/282; F01D5/30; F01D5/3007; F04; F04D; F04D29/00; F04D29/26; F04D29/32; F04D29/321; F04D29/322; F04D29/324; F05; F05D; F05D2240/00; F05D2240/20; F05D2240/30; F05D2240/303
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
71 words
A COMPRESSOR BLADE HAVING A CAMBERED AIRFOIL AND COMPRISING A metal component integrally forming the blade-mounting means and the leading edge portion of the cambered airfoil as an independent structural element and a fiber-Composite component forming the remainder of the cambered airfoil portion of the blade, said fiber-composite component having tang means joining it to the mounting means of the metal component and said two components being assembled in nonbonded relation.
Claim 2
Dependent Claim
71 words
A COMPRESSOR BLADE HAVING A CAMBERED AIRFOIL AND COMPRISING A metal component integrally forming the blade-mounting means and the leading edge portion of the cambered airfoil as an independent structural element and a fiber-Composite component forming the remainder of the cambered airfoil portion of the blade, said fiber-composite component having tang means joining it to the mounting means of the metal component and said two components being assembled in nonbonded relation.
Claim 3
Dependent Claim
85 words
A compressor blade as in claim 1 in the form of a rotor blade and in which the mounting means of the metal component comprise a tang and a rib underlying the fiber-composite component, the fiber-composite component has a tang at its inner end received by a correspondingly shaped slot in the rib of the metal component, joining the two components in nonbonded relation and the leading edge portion of the metal component has a groove receiving the upstream edge portion of the fiber-composite component.
Claim 4
Dependent Claim
28 words
A compressor blade as in claim 1 wherein the leading edge portion of the metal component has a groove receiving the upstream edge portion of the fiber-composite component.
Claim 5
Dependent Claim
26 words
A compressor blade as in claim 2 wherein the tang of the fiber-composite component is formed on a radius approximating the curvature of the cambered airfoil.
Claim 6
Dependent Claim
28 words
A compressor blade as in claim 4 wherein the tang and rib of the metal component are also formed on radii approximating the curvature of the cambered airfoil.
References Cited (Backward Citations)
GB338683A
Cited
US2868439A
Cited
US2929755A
Cited
GB901075A
Cited
GB903124A
Cited
US3424434A
Cited
US3456917A
Cited
US3294366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |