Patent US4654941A successfully refreshed from Google Patents.
US4654941A
Expired / Lapsed
US
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Method of assembling a variable nozzle turbocharger
Assignee: Garrett Corp
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Filing: 1985-12-13
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Granted: 1987-04-07
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Expires: 2005-12-13
Abstract
Abstract A turbocharger having a variable nozzle vane assembly to be used in association with an engine. A nozzle ring having a plurality of rotatable vanes mounted thereto defining an annular passageway within the turbine housing through which exhaust gas passes upstream of a turbine. Included is a means for rotating the plurality of vanes and a means for preventing binding of the components during thermal cycling.
Inventors
- 👤 Fred E. Burdette
- 👤 Jean-Luc Fleury
- 👤 Manfred Roessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:48
CPC Classifications
F; F02; F02B; F02B37/00; F02B37/12; F02B37/24; F01; F01D; F01D17/00; F01D17/10; F01D17/12; F01D17/14; F01D17/16; F01D17/165; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/4932; Y10T29/49323
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
166 words
In a turbocharger having an exhaust gas driven turbine rotatably mounted to a shaft having a compressor impeller thereon, a compressor housing enclosing said compressor impeller, a center housing including bearing means for rotatably supporting the shaft, and a turbine housing enclosing said turbine and forming a volute therein, a method of assembling the turbocharger with a spring loaded nozzle ring comprising the steps of: mounting a flange member having a central opening to said center housing; pivotably mounting a plurality of vanes to said nozzle ring; sliding a tube member having a tab at each end within said central opening; indexing one of said tabs within a slot in said flange member; sliding said nozzle ring onto the tube member; indexing the other tab within a slot in said nozzle ring; simultaneously mounting said turbine housing to said flange member and biasing said nozzle ring toward said turbine housing such that said plurality of vanes are spring loaded against a portion of said turbine housing.
Claim 2
Dependent Claim
166 words
In a turbocharger having an exhaust gas driven turbine rotatably mounted to a shaft having a compressor impeller thereon, a compressor housing enclosing said compressor impeller, a center housing including bearing means for rotatably supporting the shaft, and a turbine housing enclosing said turbine and forming a volute therein, a method of assembling the turbocharger with a spring loaded nozzle ring comprising the steps of: mounting a flange member having a central opening to said center housing; pivotably mounting a plurality of vanes to said nozzle ring; sliding a tube member having a tab at each end within said central opening; indexing one of said tabs within a slot in said flange member; sliding said nozzle ring onto the tube member; indexing the other tab within a slot in said nozzle ring; simultaneously mounting said turbine housing to said flange member and biasing said nozzle ring toward said turbine housing such that said plurality of vanes are spring loaded against a portion of said turbine housing.
Claim 3
Dependent Claim
26 words
The method according to claim 1 further including the step of mounting spacer pins to said nozzle ring between said turbine housing and said nozzle ring.
Claim 4
Dependent Claim
32 words
The method according to claim 2 further including the steps of forming a spacer tip extension integral with the spacer and inserting the tip extension within a bore in said turbine housing.
Claim 5
Dependent Claim
33 words
The method according to claim 2 further including the steps of forming an extension integral with the spacer and inserting the extension through said nozzle ring into a slot in said flange member.
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) | 1990-04-06 | 1990-10-06 | 1991-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-06 | 1994-10-06 | 1995-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-06 | 1998-10-06 | 1999-04-07 | $7700.00 | Window Closed / Lapsed |