Patent US4603568A successfully refreshed from Google Patents.
US4603568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating bimetal variable exhaust nozzle flaps and seals
Assignee: General Electric Co
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Filing: 1985-05-30
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Granted: 1986-08-05
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Expires: 2005-05-30
Abstract
Abstract A method of forming a generally planar part for a jet engine is provided. The part is adapted for withstanding high thermal stress but not high mechanical stress. A preformed strip of a superalloy is mounted around a drum shaped mandrel. A low pressure plasma deposit of a different superalloy is formed on the preformed strip. The strip is demounted and mechanically straightened.
Inventors
- 👤 Paul A. Siemers
- 👤 Melvin R. Jackson
- 👤 Stephen F. Rutkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:04
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/16; B05B7/22; B05B7/222; C; C23; C23C; C23C4/00; C23C4/12; C23C4/137; F; F01; F01D; F01D5/00; F01D5/12; F01D5/28; F01D5/288; Y; Y10; Y10S; Y10S72/00; Y10S72/70
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
63 words
A method of forming a generally planar component of a jet engine which comprises, providing a preformed sheet of a superalloy, coiling the sheet into a tube, plasma spraying a layer of a superalloy onto said preformed sheet while in the form of a tube, uncoiling the preformed sheet with the superalloy deposit, and forming the uncoiled sheet into said generally planar component.
Claim 2
Independent Claim
63 words
A method of forming a generally planar component of a jet engine which comprises, providing a preformed sheet of a superalloy, coiling the sheet into a tube, plasma spraying a layer of a superalloy onto said preformed sheet while in the form of a tube, uncoiling the preformed sheet with the superalloy deposit, and forming the uncoiled sheet into said generally planar component.
Claim 3
Dependent Claim
15 words
The method of claim 1 in which the preformed sheet is of Rene 41 superalloy.
Claim 4
Dependent Claim
16 words
The method of claim 1 in which the plasma sprayed layer is of Rene 80 superalloy.
Claim 5
Dependent Claim
16 words
The method of claim 1 in which the preformed sheet is wrapped around a cylindrical drum.
Claim 6
Dependent Claim
15 words
The method of claim 2 in which the sheet is about 0.02 inches in thickness.
Claim 7
Dependent Claim
15 words
The method of claim 3 in which the deposit is about 0.02 inches in thickness.
Claim 8
Dependent Claim
16 words
The method of claim 1 in which the resultant sheet is about 0.04 inches in thickness.
Claim 9
Dependent Claim
17 words
The method of claim 1 in which two different superalloys are employed to form a bimetal sheet.
Claim 10
Dependent Claim
22 words
The method of claim 1 in which the forming of the uncoiled sheet is by reverse rolling to flatten the product sheet.
References Cited (Backward Citations)
US3310870A
Cited
US2858603A
Cited
US3445909A
Cited
US3900639A
Cited
GB2080147A
Cited
JPS59182985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-08-04 | 1990-02-03 | 1990-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-04 | 1994-02-03 | 1994-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-04 | 1998-02-03 | 1998-08-05 | $7700.00 | Window Closed / Lapsed |