US3625634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbomachine rotor
Assignee: Motors Liquidation Co
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Filing: 1969-12-10
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Granted: 1971-12-07
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Expires: 1989-12-10
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 roots which extend through openings in the ring and which are brazed or welded to retain them on the ring. Rings of fibrous composite wrap extend around the blade mounting rings between the rows of blades. The rings may be welded together.
Inventors
- 👤 Rowland L Stedfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:30
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/06; F01D21/00; F01D21/04; F01D21/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
An axial-flow turbomachine rotor drum comprising, in combination, a plural number of open-centered metal rotor rings arranged coaxially in successive abutting relationship to define a rotor drum, each rotor ring including a blade mounting portion and a flange portion extending axially from the blade mounting portion, a ring of blades mounted on and fixed to each blade mounting portion, the blades having airfoil-contoured roots and the mounting portion defining airfoil-contoured holes receiving the blade roots, a fiber-reinforced tensile wrap disposed on the outer surface of each flange portion, the flange portion overlapping the exterior of the blade mounting portion of an adjacent rotor ring, the roots of the blades having spanwiseextending flutes thereon defining shallow recesses between the flutes, and braze metal within the recesses fixing the blades to the rotor rings.
Claim 2
Dependent Claim
132 words
An axial-flow turbomachine rotor drum comprising, in combination, a plural number of open-centered metal rotor rings arranged coaxially in successive abutting relationship to define a rotor drum, each rotor ring including a blade mounting portion and a flange portion extending axially from the blade mounting portion, a ring of blades mounted on and fixed to each blade mounting portion, the blades having airfoil-contoured roots and the mounting portion defining airfoil-contoured holes receiving the blade roots, a fiber-reinforced tensile wrap disposed on the outer surface of each flange portion, the flange portion overlapping the exterior of the blade mounting portion of an adjacent rotor ring, the roots of the blades having spanwiseextending flutes thereon defining shallow recesses between the flutes, and braze metal within the recesses fixing the blades to the rotor rings.
References Cited (Backward Citations)
FR980131A
Cited
US2143466A
Cited
FR55020E
Cited
US2803397A
Cited
US3532438A
Cited
US3403844A
Cited
US3519368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |