Patent US1801277A successfully refreshed from Google Patents.
Patent US3143972A successfully refreshed from Google Patents.
US3143972A
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Axial flow unit
Assignee: Individual
•
Filing: 1963-02-06
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Granted: 1964-08-11
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Expires: 1983-02-06
Abstract
No abstract record available.
Inventors
- 👤 Watt V Smith
- 👤 Jr Robert J Flaherty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:56
CPC Classifications
F; F04; F04D; F04D13/00; F04D13/02; F04D13/06; F04D13/0646; B; B63; B63H; B63H11/00; B63H11/02; B63H11/04; B63H11/08; B63H23/00; B63H2023/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
AN AXIAL FLOW UNIT COMPRISING: A CASING HAVING AN INLET END AND AN OUTLET END; MOTOR MEANS MOUNTED WITHIN SAID CASING MEANS AND INCLUDING A ROTOR MEMBER AND A STATOR MEMBER; SAID ROTOR MEMBER HAVING A CENTRAL BORE THERETHROUGH CONCENTRIC ABOUT THE UNIT AXIS WHICH EXTENDS BETWEEN SAID INLET AND OUTLET ENDS OF SAID CASING; SAID CENTRAL BORE IN SAID ROTOR MEMBER DEFINING AN INNER PERIPHERAL WALL THEREIN; A CENTRAL SHAFT EXTENDING ALONG THE UNIT AXIS AND BEING CONNECTED TO SAID CASING MEANS TO PREVENT RELATIVE ROTATION THEREBETWEEN; A PLURALITY OF SETS OF IMPELLER BLADES LONGITUDINALLY SPACED WITHIN AND CONNECTED TO SAID INNER PERIPHERAL WALL OF SAID ROTOR MEMBER; EACH BLADE EXTENDING RADIALLY INWARDLY FROM SAID INNER PERIPHERAL WALL AND TERMINATING ADJACENT TO, BUT SPACED FROM, SAID CENTRAL SHAFT; AT LEAST ONE SET OF STRAIGHTENING VANES DISPOSED ON THE OUTLET SIDE OF EACH SET OF IMPELLER BLADES;
Claim 2
Dependent Claim
147 words
AN AXIAL FLOW UNIT COMPRISING: A CASING HAVING AN INLET END AND AN OUTLET END; MOTOR MEANS MOUNTED WITHIN SAID CASING MEANS AND INCLUDING A ROTOR MEMBER AND A STATOR MEMBER; SAID ROTOR MEMBER HAVING A CENTRAL BORE THERETHROUGH CONCENTRIC ABOUT THE UNIT AXIS WHICH EXTENDS BETWEEN SAID INLET AND OUTLET ENDS OF SAID CASING; SAID CENTRAL BORE IN SAID ROTOR MEMBER DEFINING AN INNER PERIPHERAL WALL THEREIN; A CENTRAL SHAFT EXTENDING ALONG THE UNIT AXIS AND BEING CONNECTED TO SAID CASING MEANS TO PREVENT RELATIVE ROTATION THEREBETWEEN; A PLURALITY OF SETS OF IMPELLER BLADES LONGITUDINALLY SPACED WITHIN AND CONNECTED TO SAID INNER PERIPHERAL WALL OF SAID ROTOR MEMBER; EACH BLADE EXTENDING RADIALLY INWARDLY FROM SAID INNER PERIPHERAL WALL AND TERMINATING ADJACENT TO, BUT SPACED FROM, SAID CENTRAL SHAFT; AT LEAST ONE SET OF STRAIGHTENING VANES DISPOSED ON THE OUTLET SIDE OF EACH SET OF IMPELLER BLADES;
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) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |