Patent US4544325A successfully refreshed from Google Patents.
US4544325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable geometry device for turbine compressor outlet
Assignee: Teledyne Technologies Inc
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Filing: 1980-10-22
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Granted: 1985-10-01
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Expires: 2000-10-22
Abstract
Abstract A variable geometry device is provided for use with the compressor outlet of a turbine engine. The turbine engine includes a support housing, a compressor contained within the support housing and having a compressed air outlet and in which a pair of spaced walls define an annular and radially extending diffuser passageway. The inner end of the diffuser passageway is open to the compressed outlet while the outer end of the diffuser passageway is open to the combustion chamber for the turbine engine. A plurality of circumferentially spaced diffuser vanes are mounted to one of the diffuser walls and protrude across the diffuser passageway. An annular recessed channel is formed around the opposite diffuser wall and an annular ring is mounted within the channel. A motor is operatively connected to this ring and, upon actuation, displaces the ring transversely across the diffuser passageway to variably restrict the diffuser passageway. In addition, the ring includes a plurality of slots which register with the diffuser vanes so that the vane geometry remains the same despite axial displacement of the ring.
Inventors
- 👤 Casimir Rogo
- 👤 Herman N. Lenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:31
CPC Classifications
F; F01; F01D; F01D17/00; F01D17/10; F01D17/12; F01D17/14; F01D17/141; F01D17/143; F04; F04D; F04D29/00; F04D29/40; F04D29/42; F04D29/44; F04D29/46; F04D29/462; F04D29/464; F05; F05D; F05D2250/00; F05D2250/50; F05D2250/52
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
212 words
A compressor assembly for a turbine engine comprising: a support housing, a compressor means contained within the support housing and having a compressed air outlet; said support housing having a pair of spaced diffuser walls which form an annular diffuser passageway having its inner end open to said compressed air outlet, said diffuser passageway having an annular recessed channel formed along one diffuser wall, a ring mounted in said channel, means for moving said ring transversely across said passageway between a retracted position in which said ring is nested within said channel and an extended position in which one side of said ring protrudes into and restricts said diffuser passageway, a plurality of circumferentially spaced pins secured to and extending axially outwardly from the other side of said ring and through an opening in said channel, each pin having an external threaded portion along its length and wherein said moving means comprises a plurality of internally threaded pinions, one pinion threadably engaging each pin, means for restraining said pinions against axial movement, a gear ring rotatably mounted to said housing coaxially with said ring, said gear ring being in mesh with said pinions, a drive gear in mesh with one of said pinions, and motor means for rotatably driving said drive gear.
Claim 2
Dependent Claim
212 words
A compressor assembly for a turbine engine comprising: a support housing, a compressor means contained within the support housing and having a compressed air outlet; said support housing having a pair of spaced diffuser walls which form an annular diffuser passageway having its inner end open to said compressed air outlet, said diffuser passageway having an annular recessed channel formed along one diffuser wall, a ring mounted in said channel, means for moving said ring transversely across said passageway between a retracted position in which said ring is nested within said channel and an extended position in which one side of said ring protrudes into and restricts said diffuser passageway, a plurality of circumferentially spaced pins secured to and extending axially outwardly from the other side of said ring and through an opening in said channel, each pin having an external threaded portion along its length and wherein said moving means comprises a plurality of internally threaded pinions, one pinion threadably engaging each pin, means for restraining said pinions against axial movement, a gear ring rotatably mounted to said housing coaxially with said ring, said gear ring being in mesh with said pinions, a drive gear in mesh with one of said pinions, and motor means for rotatably driving said drive gear.
Claim 3
Dependent Claim
45 words
The invention as defined in claim 1 and further comprising a plurality of circumferentially spaced vanes secured to the other diffuser wall and protruding into said diffuser passageway and wherein said ring includes a plurality of slots which register with and slidably receive said vanes.
Claim 4
Dependent Claim
29 words
The invention as defined in claim 2 wherein said vanes extend entirely transversely across said diffuser passageway and into said slots when said ring is in its retracted position.
Claim 5
Dependent Claim
33 words
The invention as defined in claim 1 wherein the center of said one side of said ring is substantially flush with said one diffuser wall when said ring is in its retracted position.
Claim 6
Dependent Claim
38 words
The invention as defined in claim 4 wherein said ring includes a tapered portion adjacent both the inner and outer radial ends of said ring which tapers from said one ring side and toward said one diffuser wall.
Claim 7
Dependent Claim
36 words
The invention as defined in claim 5 wherein the inner and outer radial ends of said one side of said ring substantially register with said one diffuser wall when said ring is in said extended position.
References Cited (Backward Citations)
US2763426A
Cited
US2739782A
Cited
FR1208697A
Cited
US2996996A
Cited
US3365120A
Cited
US3406740A
Cited
US3489391A
Cited
US3478955A
Cited
US3829237A
Cited
US3887295A
Cited
US3975911A
Cited
US3994620A
Cited
US4149826A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-30 | 1989-04-01 | 1989-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-30 | 1993-04-01 | 1993-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-30 | 1997-04-01 | 1997-10-01 | $7700.00 | Window Closed / Lapsed |