Patent US3300178A successfully refreshed from Google Patents.
US3300178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbines
Assignee: English Electric Co Ltd
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Filing: 1965-09-16
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Granted: 1967-01-24
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Expires: 1985-09-16
Abstract
No abstract record available.
Inventors
- 👤 Rizk Waheeb
- 👤 Keer Clifford Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:49
CPC Classifications
F; F01; F01D; F01D9/00; F01D9/02; F01D9/04; F01D9/042; F01D25/00; F01D25/08; F01D25/12; F01D25/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A TURBINE INCLUDING CASING MEANS FORMING A CIRCUMFERENTIALLY-EXTENDING INWARDLY-FACING ANNULAR CHANNEL, MEANS LOCATING THE OUTER PLATFORMS OF A ROW OF STATOR BLADES IN THE MOUTH OF SAID CHANNEL, AN ANNULAR GROOVE FORMED IN THE BASE OF SAID CHANNEL, MEANS TO FEED COOLING AIR INTO SAID GROOVE, AND AN AXIALLY-CORRUGATED CIRCUMFERENTIAL STRIP LOCATED AGAINST THE BASE OF SAID CHANNEL, WITH CLEARANCE FROM THE SIDES THEREOF, SO ARRANGED THAT AIR FED INTO SAID GROOVE IS CAUSED TO FLOW TO EACH AXIALLYSPACED SIDE OF THE CHANNEL BY SAID CORRUGATED STRIP, TO BE DELIVERED INTO SAID CHANNEL ALONG THE AXIALLY-SPACED WALLS THEREOF, TO COOL THEM.
Claim 2
Dependent Claim
101 words
A TURBINE INCLUDING CASING MEANS FORMING A CIRCUMFERENTIALLY-EXTENDING INWARDLY-FACING ANNULAR CHANNEL, MEANS LOCATING THE OUTER PLATFORMS OF A ROW OF STATOR BLADES IN THE MOUTH OF SAID CHANNEL, AN ANNULAR GROOVE FORMED IN THE BASE OF SAID CHANNEL, MEANS TO FEED COOLING AIR INTO SAID GROOVE, AND AN AXIALLY-CORRUGATED CIRCUMFERENTIAL STRIP LOCATED AGAINST THE BASE OF SAID CHANNEL, WITH CLEARANCE FROM THE SIDES THEREOF, SO ARRANGED THAT AIR FED INTO SAID GROOVE IS CAUSED TO FLOW TO EACH AXIALLYSPACED SIDE OF THE CHANNEL BY SAID CORRUGATED STRIP, TO BE DELIVERED INTO SAID CHANNEL ALONG THE AXIALLY-SPACED WALLS THEREOF, TO COOL THEM.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |