Patent US3231238A successfully refreshed from Google Patents.
US3231238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbines
Assignee: VORTEC PRODUCTS CO
•
Filing: 1964-06-18
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Granted: 1966-01-25
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Expires: 1984-06-18
Abstract
No abstract record available.
Inventors
- 👤 Bo N Hoffstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:33
CPC Classifications
F; F01; F01D; F01D1/00; F01D1/02; F01D1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
A TURBINE COMPRISING A HOUSING HAVING AN ANNULAR WORKING CHAMBER, MEANS PROVIDING A FLUID INLET COMMUNICATING WITH SAID WORKING CHAMBER, MEANS TO CAUSE FLUID WHICH ENTERS SAID INLET TO MOVE IN A ROTARY PATH IN SAID WORKING CHAMBER, A SHAFT ROTATABLY MOUNTED IN SAID HOUSING, ROTOR MEANS CARRIED BY SAID SHAFT FOR ROTATION IN SAID WORKING CHAMBER AND PROVIDING A PLURALITY OF PASSAGES POSITIONED TO INTERACT WITH SAID FLUID TO IMPART A DRIVING FORCE TO SAID ROTOR, AND A RING FORMING AN EXHAUST OPENING FOR SAID FLUID COAXIALLY OF SAID SHAFT, SAID EXHAUST OPENING BEING CIRCULAR, THE DIAMETER OF SAID EXHAUST OPENING BEING SUBSTANTIALLY LESS THAN BUT AT LEAST HALF THE MEANS DIAMETER OF THE ROTOR PASSAGES, AND THE DIAMETER OF SAID EXHAUST OPENING BEING SUFFICIENTLY LARGE TO ACCOMMODATE, WITHOUT SUBSTANTIAL RESTRICTION, THE AMOUNT OF FLUID FLOWING THROUGH SAID ROTOR PASSAGES WHEN SAID FLUID LEAVES SAID ROTOR PASSAGES WITH NO ROTATION.
Claim 2
Dependent Claim
151 words
A TURBINE COMPRISING A HOUSING HAVING AN ANNULAR WORKING CHAMBER, MEANS PROVIDING A FLUID INLET COMMUNICATING WITH SAID WORKING CHAMBER, MEANS TO CAUSE FLUID WHICH ENTERS SAID INLET TO MOVE IN A ROTARY PATH IN SAID WORKING CHAMBER, A SHAFT ROTATABLY MOUNTED IN SAID HOUSING, ROTOR MEANS CARRIED BY SAID SHAFT FOR ROTATION IN SAID WORKING CHAMBER AND PROVIDING A PLURALITY OF PASSAGES POSITIONED TO INTERACT WITH SAID FLUID TO IMPART A DRIVING FORCE TO SAID ROTOR, AND A RING FORMING AN EXHAUST OPENING FOR SAID FLUID COAXIALLY OF SAID SHAFT, SAID EXHAUST OPENING BEING CIRCULAR, THE DIAMETER OF SAID EXHAUST OPENING BEING SUBSTANTIALLY LESS THAN BUT AT LEAST HALF THE MEANS DIAMETER OF THE ROTOR PASSAGES, AND THE DIAMETER OF SAID EXHAUST OPENING BEING SUFFICIENTLY LARGE TO ACCOMMODATE, WITHOUT SUBSTANTIAL RESTRICTION, THE AMOUNT OF FLUID FLOWING THROUGH SAID ROTOR PASSAGES WHEN SAID FLUID LEAVES SAID ROTOR PASSAGES WITH NO ROTATION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |