US3360239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil free turbine assembly
Assignee: Individual
•
Filing: 1964-12-04
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Granted: 1967-12-26
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Expires: 1984-12-04
Abstract
No abstract record available.
Inventors
- 👤 Judson S Swearingen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:33
CPC Classifications
F; F01; F01D; F01D11/00; F01D11/02; F01D11/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
IN A CRYOGENIC TURBO-EXPANDER INCLUDING A TURBINE CASE HAVING A DETACHABLE HEAT INSULATING AND WALL WITH A SHAFT OPENING THERETHROUGH, A TURBINE WHEEL IN THE CASE, A SHAFT CARRYING THE TURBINE WHEEL EXTENDING THROUGH SAID OPENING IN THE HEAT INSULATING WALL IN CLEARANCE TYPE SEALED RELATIONSHIP THEREWITH AND A BEARING MOUNTING THE SHAFT FOR ROTATION ABOUT ITS AXIS, THAT IMPROVEMENT WHICH COMPRISES: THE RELATIVELY SEALED SURFACES ON SAID SHAFT AND WALL BEING OF DIFFERENT DIAMETERS AT AXIALLY SPACED POINTS RESPECTIVELY, AND ONE OF THE OPPOSED RELATIVELY SEALED SURFACES ON SAID SHAFT AND WALL BEING TAPERED WHEREBY AXIAL MOVEMENT OF SAID HEAT INSULATING WALL RELATIVE TO SAID SHAFT WILL VARY THE CLEARANCE THEREBETWEEN, MEANS FOR ATTACHING THE HEAT INSULATING WALL OF THE CASE ADJUSTABLY WITH RESPECT TO THE LONGITUDINAL AXIS OF THE SHAFT; MEANS FOR SUPPORTING SAID BEARING SPACED FROM SAID HEAT INSULATING WALL; AND MEANS ATTACHING SAID BEARING SUPPORTING MEANS RIGIDLY TO SAID INSULATING WALL WITH A PORTION OF SAID SHAFT EXPOSED TO THE AMBIENT ATMOSPHERE PRESSURE THEREBETWEEN.
Claim 2
Dependent Claim
168 words
IN A CRYOGENIC TURBO-EXPANDER INCLUDING A TURBINE CASE HAVING A DETACHABLE HEAT INSULATING AND WALL WITH A SHAFT OPENING THERETHROUGH, A TURBINE WHEEL IN THE CASE, A SHAFT CARRYING THE TURBINE WHEEL EXTENDING THROUGH SAID OPENING IN THE HEAT INSULATING WALL IN CLEARANCE TYPE SEALED RELATIONSHIP THEREWITH AND A BEARING MOUNTING THE SHAFT FOR ROTATION ABOUT ITS AXIS, THAT IMPROVEMENT WHICH COMPRISES: THE RELATIVELY SEALED SURFACES ON SAID SHAFT AND WALL BEING OF DIFFERENT DIAMETERS AT AXIALLY SPACED POINTS RESPECTIVELY, AND ONE OF THE OPPOSED RELATIVELY SEALED SURFACES ON SAID SHAFT AND WALL BEING TAPERED WHEREBY AXIAL MOVEMENT OF SAID HEAT INSULATING WALL RELATIVE TO SAID SHAFT WILL VARY THE CLEARANCE THEREBETWEEN, MEANS FOR ATTACHING THE HEAT INSULATING WALL OF THE CASE ADJUSTABLY WITH RESPECT TO THE LONGITUDINAL AXIS OF THE SHAFT; MEANS FOR SUPPORTING SAID BEARING SPACED FROM SAID HEAT INSULATING WALL; AND MEANS ATTACHING SAID BEARING SUPPORTING MEANS RIGIDLY TO SAID INSULATING WALL WITH A PORTION OF SAID SHAFT EXPOSED TO THE AMBIENT ATMOSPHERE PRESSURE THEREBETWEEN.
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) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |