US3832087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Axial turbine combined with reverse turbine
Assignee: ABB Stal AB
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Filing: 1973-10-15
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Granted: 1974-08-27
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Expires: 1993-10-15
Abstract
Abstract A main axial turbine combined with a reverse turbine, the rotors of both turbines being mounted on the same common rotor shaft, with the reverse turbine housing suspended coaxially within the outlet portion of the main axial turbine by a symmetrical system of support plates or vanes, is disclosed.
Inventors
- 👤 P Lohonen
- 👤 O Karlsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:09
CPC Classifications
F; F01; F01D; F01D13/00; F01D13/006; F01D15/00; F01D15/02; F01D15/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
142 words
A main axial turbine combined with a reverse turbine, the rotor of the reverse turbine being operatively mounted on the same shaft as, and adjacent in axial flow direction to, the rotor of the main turbine, with the reverse turbine housing suspended within and coaxial with the outlet portion of the main turbine housing, and comprising: the reverse turbine housing being formed of A major stator portion and an outlet end portion, said major portion and said outlet end portion circumferentially connected by a symmetrical framework of support struts; said outlet end portion of the reverse turbine housing carrying therein the bearing which journals the outlet end of the common turbine rotor shaft; and a symmetrical system of plates, connected to the inside of the outlet portion of the main turbine housing and supportively suspending the reverse turbine housing within said system.
Claim 2
Dependent Claim
142 words
A main axial turbine combined with a reverse turbine, the rotor of the reverse turbine being operatively mounted on the same shaft as, and adjacent in axial flow direction to, the rotor of the main turbine, with the reverse turbine housing suspended within and coaxial with the outlet portion of the main turbine housing, and comprising: the reverse turbine housing being formed of A major stator portion and an outlet end portion, said major portion and said outlet end portion circumferentially connected by a symmetrical framework of support struts; said outlet end portion of the reverse turbine housing carrying therein the bearing which journals the outlet end of the common turbine rotor shaft; and a symmetrical system of plates, connected to the inside of the outlet portion of the main turbine housing and supportively suspending the reverse turbine housing within said system.
Claim 3
Dependent Claim
28 words
Main axial turbine combined with reverse turbine in accordance with claim 1, wherein said symmetrical system of plates supportively suspend said major portion of the reverse turbine housing.
Claim 4
Dependent Claim
28 words
Main axial turbine combined with reverse turbine according to claim 1, wherein said symmetrical system of plates supportively suspend said outlet end portion of the reverse turbine housing.
Claim 5
Dependent Claim
55 words
Main axial turbine combined with reverse turbine according to claim 1, further comprising an inspection chamber mounted on said outlet end portion of the reverse turbine housing, said inspection chamber being in communication with the outside through an open shaft flexibly attached to the outlet portion of the main turbine housing by expandable connecting means.
Claim 6
Dependent Claim
55 words
Main axial turbine combined with reverse turbine according to claim 1, wherein the inlet tube of the reverse turbine passes through the wall of the outlet portion of the main turbine housing, said inlet tube communicating with and being flexibly attached to said major portion of the reverse turbine housing by a telescopic sealing connection.
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) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |