US3656864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbomachine rotor
Assignee: Motors Liquidation Co
•
Filing: 1970-11-09
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Granted: 1972-04-18
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Expires: 1990-11-09
Abstract
Abstract A rotor for a compressor or turbine of the axial-flow type in which the rotor wheels or drum sections have blade stalks integral with them and the blades, including blade platforms, are mounted on the stalks by circumferentially extending dovetail structure. A spacer ring between adjacent rotor wheels includes fingers extending under the blade platforms which may hold the blades in place on the stalks and which may bear vibration damping material in contact with the blade platforms. A ring of such blades engaging in dovetails in plural axially aligned drum sections may hold these assembled together.
Inventors
- 👤 Joseph A Wagle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:53
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/22; F01D5/30; F01D5/3007; Y; Y10; Y10S; Y10S416/00; Y10S416/50
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
111 words
A turbomachine rotor comprising, in combination, a rotatable blade support having an annular rim and having blade stalks integral with the rim projecting radially outward from the rim and extending in the direction across the rim, the blade stalks being mutually spaced at their radially outer ends, the stalks having plural dovetail blade slots extending circumferentially of the rim in the outer ends of the stalks; a blade mounted on each stalk, each blade having plural dovetail root elements engaged in the slots to retain the blade in the directions axially and radially of the rotor; and means cooperating with the support and blades restraining the blades circumferentially of the rotor.
Claim 2
Dependent Claim
111 words
A turbomachine rotor comprising, in combination, a rotatable blade support having an annular rim and having blade stalks integral with the rim projecting radially outward from the rim and extending in the direction across the rim, the blade stalks being mutually spaced at their radially outer ends, the stalks having plural dovetail blade slots extending circumferentially of the rim in the outer ends of the stalks; a blade mounted on each stalk, each blade having plural dovetail root elements engaged in the slots to retain the blade in the directions axially and radially of the rotor; and means cooperating with the support and blades restraining the blades circumferentially of the rotor.
Claim 3
Dependent Claim
117 words
A turbomachine rotor stage comprising, in combination, a rotatable blade support having an annular rim and having blade stalks integral with the rim projecting radially outward from the rim and extending in the direction across the rim, the blade stalks being mutually spaced at their radially outer ends, the stalks having plural dovetail blade slots extending circumferentially of the rim in the outer ends of the stalks; a blade mounted on each stalk, each blade having plural dovetail root elements engaged in the slots to retain the blade in the directions axially and radially of the rotor; and blade vibration damping means disposed between the stalks abutting the root elements restraining the blades circumferentially of the rotor.
Claim 4
Dependent Claim
117 words
A turbomachine rotor stage comprising, in combination, a rotatable blade support having an annular rim and having blade stalks integral with the rim projecting radially outward from the rim and extending in the direction across the rim, the blade stalks being mutually spaced at their radially outer ends, the stalks having plural dovetail blade slots extending circumferentially of the rim in the outer ends of the stalks; a blade mounted on each stalk, each blade having plural dovetail root elements engaged in the slots to retain the blade in the directions axially and radially of the rotor; and blade vibration damping means disposed between the stalks abutting the root elements restraining the blades circumferentially of the rotor.
Claim 5
Dependent Claim
136 words
A turbomachine rotor comprising, in combination, a rotatable blade support having an annular rim; blade stalks extending radially from the rim and a blade extending radially from each stalk; the blades including laterally projecting platforms extending from the radially inner end of the blades to provide an annular inner boundary of the motive fluid path through the blades; a tongue and groove connection extending circumferentially of the rotor between each blade and a stalk including root elements on the blade; a spacer ring fixed to one face of the rim including a peripheral portion extending around the rotor adjacent to the platforms, the spacer ring bearing fingers extending between the stalks and under the platforms engaging the platforms to damp vibration of the blades and engaging the root elements to retain the blades in place circumferentially.
Claim 6
Dependent Claim
136 words
A turbomachine rotor comprising, in combination, a rotatable blade support having an annular rim; blade stalks extending radially from the rim and a blade extending radially from each stalk; the blades including laterally projecting platforms extending from the radially inner end of the blades to provide an annular inner boundary of the motive fluid path through the blades; a tongue and groove connection extending circumferentially of the rotor between each blade and a stalk including root elements on the blade; a spacer ring fixed to one face of the rim including a peripheral portion extending around the rotor adjacent to the platforms, the spacer ring bearing fingers extending between the stalks and under the platforms engaging the platforms to damp vibration of the blades and engaging the root elements to retain the blades in place circumferentially.
Claim 7
Dependent Claim
171 words
A turbomachine rotor comprising, in combination, a rotatable blade support having an annular rim and having blade stalks integral with the rim projecting radially outward from the rim and extending in the direction across the rim, the bLade stalks being mutually spaced at their radially outer ends, the stalks having plural dovetail blade slots extending circumferentially of the rim in the outer ends of the stalks; a blade mounted on each stalk, each blade having plural dovetail root elements engaged in the slots to retain the blade in the directions axially and radially of the rotor, the blades including laterally projecting platforms extending from the radially inner end of the blades to provide an annular inner boundary of the motive fluid path through the blades; a spacer ring fixed to one face of the rim including a peripheral portion extending around the rotor adjacent to the platforms, the spacer ring bearing fingers extending between the stalks and under the platforms, the fingers engaging the platforms to damp vibration of the blades.
Claim 8
Dependent Claim
171 words
A turbomachine rotor comprising, in combination, a rotatable blade support having an annular rim and having blade stalks integral with the rim projecting radially outward from the rim and extending in the direction across the rim, the bLade stalks being mutually spaced at their radially outer ends, the stalks having plural dovetail blade slots extending circumferentially of the rim in the outer ends of the stalks; a blade mounted on each stalk, each blade having plural dovetail root elements engaged in the slots to retain the blade in the directions axially and radially of the rotor, the blades including laterally projecting platforms extending from the radially inner end of the blades to provide an annular inner boundary of the motive fluid path through the blades; a spacer ring fixed to one face of the rim including a peripheral portion extending around the rotor adjacent to the platforms, the spacer ring bearing fingers extending between the stalks and under the platforms, the fingers engaging the platforms to damp vibration of the blades.
Claim 9
Dependent Claim
187 words
A turbomachine rotor comprising, in combination, a rotatable blade support having an annular rim and having blade stalks integral with the rim projecting radially outward from the rim and extending in the direction across the rim, the blade stalks being mutually spaced at their radially outer ends, the stalks having plural dovetail blade slots extending circumferentially of the rim in the outer ends of the stalks; a blade mounted on each stalk, each blade having plural dovetail root elements engaged in the slots to retain the blade in the directions axially and radially of the rotor, the blades including laterally projecting platforms extending from the radially inner end of the blades to provide an annular inner boundary of the motive fluid path through the blades; a spacer ring fixed to one face of the rim including a radial web blocking flow under the platforms and a peripheral portion extending around the rotor adjacent to the platforms, the spacer ring bearing fingers extending between the stalks and under the platforms; and yieldable friction material disposed between and engaging the fingers and platforms to damp vibration of the blades.
Claim 10
Dependent Claim
187 words
A turbomachine rotor comprising, in combination, a rotatable blade support having an annular rim and having blade stalks integral with the rim projecting radially outward from the rim and extending in the direction across the rim, the blade stalks being mutually spaced at their radially outer ends, the stalks having plural dovetail blade slots extending circumferentially of the rim in the outer ends of the stalks; a blade mounted on each stalk, each blade having plural dovetail root elements engaged in the slots to retain the blade in the directions axially and radially of the rotor, the blades including laterally projecting platforms extending from the radially inner end of the blades to provide an annular inner boundary of the motive fluid path through the blades; a spacer ring fixed to one face of the rim including a radial web blocking flow under the platforms and a peripheral portion extending around the rotor adjacent to the platforms, the spacer ring bearing fingers extending between the stalks and under the platforms; and yieldable friction material disposed between and engaging the fingers and platforms to damp vibration of the blades.
Claim 11
Dependent Claim
138 words
A turbomachine rotor comprising, in combination, a rotatable blade support comprising two coaxial members each having an annular rim and having blade stalks integral with the rim projecting radially outward from the rim and extending in the direction across the rim, the blade stalks on the two members being aligned, the blade stalks being mutually circumferentially spaced at their radially outer ends, the stalks on both members having plural dovetail blade slots extending circumferentially of the rim in the outer ends of the stalks; a blade mounted on each aligned pair of stalks, each blade having plural dovetail root elements engaged in the slots of the stalks of both members to retain the blade in the directions axially and radially of the rotor; and means cooperating with the support and blades restraining the blades circumferentially of the rotor.
Claim 12
Dependent Claim
138 words
A turbomachine rotor comprising, in combination, a rotatable blade support comprising two coaxial members each having an annular rim and having blade stalks integral with the rim projecting radially outward from the rim and extending in the direction across the rim, the blade stalks on the two members being aligned, the blade stalks being mutually circumferentially spaced at their radially outer ends, the stalks on both members having plural dovetail blade slots extending circumferentially of the rim in the outer ends of the stalks; a blade mounted on each aligned pair of stalks, each blade having plural dovetail root elements engaged in the slots of the stalks of both members to retain the blade in the directions axially and radially of the rotor; and means cooperating with the support and blades restraining the blades circumferentially of the rotor.
Claim 13
Dependent Claim
145 words
A turbomachine rotor comprising, in combination, a rotatable blade support comprising two coaxial members each having an annular rim and having blade stalks integral with the rim projecting radially outward from the rim and extending in the direction across the rim, the blade stalks on the two members being aligned, the blade stalks being mutually circumferentially spaced at their radially outer ends, the stalks on both members having plural dovetail blade slots extending circumferentially of the rim in the outer ends of the stalks; a blade mounted on each aligned pair of stalks, each blade having plural dovetail root elements engaged in the slots of the stalks of both members to retain the blade in the directions axially and radially of the rotor and to fix the coaxial members together; and means cooperating with the support and blades restraining the blades circumferentially of the rotor.
Claim 14
Dependent Claim
145 words
A turbomachine rotor comprising, in combination, a rotatable blade support comprising two coaxial members each having an annular rim and having blade stalks integral with the rim projecting radially outward from the rim and extending in the direction across the rim, the blade stalks on the two members being aligned, the blade stalks being mutually circumferentially spaced at their radially outer ends, the stalks on both members having plural dovetail blade slots extending circumferentially of the rim in the outer ends of the stalks; a blade mounted on each aligned pair of stalks, each blade having plural dovetail root elements engaged in the slots of the stalks of both members to retain the blade in the directions axially and radially of the rotor and to fix the coaxial members together; and means cooperating with the support and blades restraining the blades circumferentially of the rotor.
References Cited (Backward Citations)
US3532438A
Cited
US3554667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |