Patent US4815933A successfully refreshed from Google Patents.
US4815933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nozzle flange attachment and sealing arrangement
Assignee: United States Department of the Air Force
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Filing: 1987-11-13
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Granted: 1989-03-28
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Expires: 2007-11-13
Abstract
Abstract The invention comprises a boltless turbine nozzle and nozzle support assembly that includes a turbine nozzle mounting flange seated in a nozzle seat forming a part of the nozzle support. Pins are used for affixing the nozzle mounting flange to the nozzle support seat and baffles are provided for maintaining the pins in their desired locations. A retaining ring is preferrably used to retain the baffles adjacent to the pins. A pressure actuated pliable seal is affixed to the turbine nozzle adjacent to the nozzle seat in order to provide an air seal across the completed assembly.
Inventors
- 👤 Harold R. Hansel
- 👤 Vincent M. Drerup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:08
CPC Classifications
F; F01; F01D; F01D11/00; F01D11/005; F01D9/00; F01D9/02; F01D9/04; F01D9/042; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
86 words
A turbine nozzle and nozzle support assembly comprising: a nozzle attachment flange affixed to the turbine nozzle; a nozzle seat forming a part of the nozzle support, said nozzle seat for supporting the turbine nozzle at said nozzle attachment flange; pins for affixing said nozzle attachment flange to said nozzle seat; baffles for maintaining said pins in a desired location; and a retaining ring for retaining said baffles adjacent to said pins wherein the nozzle support further comprises a retention flange for holding said retaining ring.
Claim 2
Dependent Claim
86 words
A turbine nozzle and nozzle support assembly comprising: a nozzle attachment flange affixed to the turbine nozzle; a nozzle seat forming a part of the nozzle support, said nozzle seat for supporting the turbine nozzle at said nozzle attachment flange; pins for affixing said nozzle attachment flange to said nozzle seat; baffles for maintaining said pins in a desired location; and a retaining ring for retaining said baffles adjacent to said pins wherein the nozzle support further comprises a retention flange for holding said retaining ring.
Claim 3
Dependent Claim
20 words
The turbine nozzle and nozzle support assembly of claim 1 further comprising seal means for restricting airflow through the assembly.
Claim 4
Dependent Claim
21 words
The turbine nozzle support assembly of claim 2 wherein said seal means comprises a pliable leaf seal affixed to said nozzle.
Claim 5
Dependent Claim
23 words
The turbine nozzle and nozzle support assembly of claim 1 wherein said pins further comprise pin extensions for preventing autorotation of said baffles.
Claim 6
Dependent Claim
37 words
The turbine nozzle and nozzle support assembly of claim 1 wherein the nozzle support further comprises a nozzle capture flange for preventing excessive axial rotation of said turbine nozzle due to pressure differentials across said turbine nozzle.
Claim 7
Dependent Claim
23 words
The turbine nozzle and nozzle support assembly of claim 1 wherein said baffles engage said nozzle support, said pins and said retaining ring.
Claim 8
Dependent Claim
25 words
The turbine nozzle and nozzle support assembly of claim 1 said nozzle seat is u-shaped and said nozzle attachment flange sits within said u-shaped seat.
Claim 9
Dependent Claim
77 words
A nozzle flange attachment assembly comprising: (a) a turbine nozzle having an attachment flange including a series of nozzle pin holes; (b) a turbine nozzle support comprising: (i) a nozzle seat for supporting said turbine nozzle; (ii) a series of pin holes, and (iii) a retainer lip; (c) pins for connecting said turbine nozzle attachment flange to said nozzle support; and (d) retainer means placed in said retainer lip for retaining said pins in said pin holes.
Claim 10
Dependent Claim
77 words
A nozzle flange attachment assembly comprising: (a) a turbine nozzle having an attachment flange including a series of nozzle pin holes; (b) a turbine nozzle support comprising: (i) a nozzle seat for supporting said turbine nozzle; (ii) a series of pin holes, and (iii) a retainer lip; (c) pins for connecting said turbine nozzle attachment flange to said nozzle support; and (d) retainer means placed in said retainer lip for retaining said pins in said pin holes.
Claim 11
Dependent Claim
26 words
The nozzle flange attachment assembly of claim 8 wherein said retainer means comprises baffles adjacent to said pins and a retaining ring for retaining said baffles.
Claim 12
Dependent Claim
21 words
The nozzle flange attachment assembly of claim 9 wherein said baffles engage said nozzle support, said pins and said retaining ring.
Claim 13
Dependent Claim
28 words
The nozzle flange attachment assembly of claim 8 wherein said turbine nozzle further comprises a pliable pressure actuated seal for restricting airflow through the nozzle flange attachment assembly.
Claim 14
Dependent Claim
29 words
The nozzle flange attachment assembly of claim 11 wherein said pins further comprise pin extensions which engage adjacent baffles in order to prevent uncontrolled circumferential movement of said baffles.
Claim 15
Dependent Claim
33 words
The nozzle flange attachment assembly of claim 8 wherein the nozzle support further comprises a nozzle capture flange for preventing excessive turbine nozzle axial rotation due to pressure differentials across said turbine nozzle.
Claim 16
Dependent Claim
24 words
The nozzle flange attachment assembly of claim 8 wherein said nozzle seat is u-shaped and said nozzle attachment flange sits within said u-shaped seat.
Claim 17
Dependent Claim
39 words
The nozzle attachment assembly of claim 8 wherein said pins are further characterized by a retention flange for engagement with a support step on said nozzle support in order to prevent said pins from passing through said nozzle support.
References Cited (Backward Citations)
US2488867A
Cited
US2609176A
Cited
US2869821A
Cited
US2942844A
Cited
US2955800A
Cited
US3066911A
Cited
US3062499A
Cited
US3205828A
Cited
US3423071A
Cited
US3610777A
Cited
US3765791A
Cited
US3829233A
Cited
US3970318A
Cited
US4274805A
Cited
US4314793A
Cited
US4318668A
Cited
US4384822A
Cited
US4391565A
Cited
US4566851A
Cited
JPH05268611A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-27 | 1992-09-26 | 1993-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-27 | 1996-09-26 | 1997-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-27 | 2000-09-26 | 2001-03-28 | $7700.00 | Window Closed / Lapsed |