US3704499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a nozzle for a turbogenerator
Assignee: TDK Micronas GmbH
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Filing: 1970-10-06
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Granted: 1972-12-05
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Expires: 1990-10-06
Abstract
Abstract A method of producing a nozzle for a turbogenerator. A plurality of spiraling grooves are cut on a constant-diameter bar, the bar is tapered by cutting away part of the ridges between the grooves, a cavity is formed with the bar, the cavity is evacuated and sealed, a shroud is formed having a cavity therein, the shroud cavity is evacuated and sealed, and the bar and shroud are assembled together to form a nozzle.
Inventors
- 👤 Charles P Majkrzak
- 👤 Michael S Polgar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:42
CPC Classifications
F; F01; F01D; F01D15/00; F01D15/10; F01D25/00; F01D25/18; F01D25/22; F01D9/00; F01D9/02; F01D9/04; F01K; F01K25/00; F01K25/08; F01K25/12; F01K7/00; F01K7/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49428; Y10T29/49432
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
108 words
A method of producing a nozzle comprising the steps of: cutting a multiplicity of constant width spiraling grooves on a constant diameter bar to form the body of said nozzle; cutting a predetermined taper on the circumference of the body to the root diameter formed by the grooves and to a predetermined length; forming a shroud equal to said predetermined length to fit over said tapered body, and said shroud being formed to have a root diameter equal to the root diameter of the nozzle body plus twice the determined throat dimension; and assembling said body and shroud to form a multiplicity of nozzle inlets and nozzle outlets.
Claim 2
Independent Claim
108 words
A method of producing a nozzle comprising the steps of: cutting a multiplicity of constant width spiraling grooves on a constant diameter bar to form the body of said nozzle; cutting a predetermined taper on the circumference of the body to the root diameter formed by the grooves and to a predetermined length; forming a shroud equal to said predetermined length to fit over said tapered body, and said shroud being formed to have a root diameter equal to the root diameter of the nozzle body plus twice the determined throat dimension; and assembling said body and shroud to form a multiplicity of nozzle inlets and nozzle outlets.
Claim 3
Dependent Claim
15 words
The method of claim 1 including the step of forming a cavity within said body.
Claim 4
Dependent Claim
15 words
The method of claim 2 including the step of evacuating and sealing said body cavity.
Claim 5
Dependent Claim
12 words
The method of claim 1 including forming a cavity within said shroud.
Claim 6
Dependent Claim
15 words
The method of claim 4 including the step of evacuating and sealing said shroud cavity.
Claim 7
Independent Claim
112 words
A method of producing a nozzle for a turbogenerator comprising in combination the steps of: cutting a multiplicity of constant width spiraling grooves on a constant diameter bar to form the body of said nozzle; cutting a predetermined taper on the circumference of the body to the root diameter formed by the grooves and to a predetermined length; forming a cavity within the body; evacuating and sealing said body cavity; forming a shroud equal to said predetermined length to fit over said tapered body; forming a cavity within said shroud; evacuating and sealing said shroud cavity; and assembling said body and shroud to form a multiplicity of nozzle inlets and nozzle outlets.
Claim 8
Independent Claim
112 words
A method of producing a nozzle for a turbogenerator comprising in combination the steps of: cutting a multiplicity of constant width spiraling grooves on a constant diameter bar to form the body of said nozzle; cutting a predetermined taper on the circumference of the body to the root diameter formed by the grooves and to a predetermined length; forming a cavity within the body; evacuating and sealing said body cavity; forming a shroud equal to said predetermined length to fit over said tapered body; forming a cavity within said shroud; evacuating and sealing said shroud cavity; and assembling said body and shroud to form a multiplicity of nozzle inlets and nozzle outlets.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |