Patent US3104803A successfully refreshed from Google Patents.
US3104803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flatt
Assignee: —
•
Filing: —
•
Granted: 1963-09-24
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Expires: 1980-09-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:59
CPC Classifications
F; F04; F04D; F04D25/00; F04D25/02; F04D25/04; F04D25/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A FLUID REACTION FAN COMPRISING A SHROUD-LIKE HOUSING HAVING A BLADED ROTOR ROTATABLY MOUNTED THEREIN, SAID ROTOR COMPRISING A CENTRAL HUB HAVING A PLURALITY OF BLADES MOUNTED THEREON, SAID BLADES HAVING JET NOZZLES AT THE TRAILING EDGES THEREOF COMMUNICATING WITH PASSAGEWAYS LEADING TO THE HUB, SAID HUB BEING PROVIDED WITH A FIRST FLUID RECEIVING CHAMBER, THE HOUSING FURTHER HAVING A FLUID DISTRIBUTION MEMBER MOUNTED THEREWITHIN AND AFFIXED THERETO, SAID MEMBER HAVING A SECOND FLUID DISTRIBUTION CHAMBER AND BEING ADAPTED TO RECEIVE PROPELLING FLUID FROM AN EXTERNAL SOURCE, A HOLLOW SHAFT EXTENDING FROM SAID MEMBER AND UPON WHICH SAID ROTOR IS MOUNTED, OPENINGS IN SAID SHAFT PERMITTING COMMUNICATION BETWEEN THE SAID TWO FLUID CHAMBERS, WHEREBY PROPELLING FLUID MAY BE TRANSMITTED FROM SAID FLUID DISTRIBUTION CHAMBER IN SAID MEMBER TO SAID NOZZLES, AND MEANS INCLUDING A BEARING MEANS FOR ROTATABLY MOUNTING SAID ROTOR ON SAID SHAFT PERMITTING A METERED LEAKAGE OF PROPELLING FLUID THROUGH SAID BEARING MEANS OUT OF SAID ROTOR FLUID RECEIVING CHAMBER AND ESTABLISHING A FILM OF FLUID UPON WHICH SAID ROTOR RIDES.
Claim 2
Dependent Claim
173 words
A FLUID REACTION FAN COMPRISING A SHROUD-LIKE HOUSING HAVING A BLADED ROTOR ROTATABLY MOUNTED THEREIN, SAID ROTOR COMPRISING A CENTRAL HUB HAVING A PLURALITY OF BLADES MOUNTED THEREON, SAID BLADES HAVING JET NOZZLES AT THE TRAILING EDGES THEREOF COMMUNICATING WITH PASSAGEWAYS LEADING TO THE HUB, SAID HUB BEING PROVIDED WITH A FIRST FLUID RECEIVING CHAMBER, THE HOUSING FURTHER HAVING A FLUID DISTRIBUTION MEMBER MOUNTED THEREWITHIN AND AFFIXED THERETO, SAID MEMBER HAVING A SECOND FLUID DISTRIBUTION CHAMBER AND BEING ADAPTED TO RECEIVE PROPELLING FLUID FROM AN EXTERNAL SOURCE, A HOLLOW SHAFT EXTENDING FROM SAID MEMBER AND UPON WHICH SAID ROTOR IS MOUNTED, OPENINGS IN SAID SHAFT PERMITTING COMMUNICATION BETWEEN THE SAID TWO FLUID CHAMBERS, WHEREBY PROPELLING FLUID MAY BE TRANSMITTED FROM SAID FLUID DISTRIBUTION CHAMBER IN SAID MEMBER TO SAID NOZZLES, AND MEANS INCLUDING A BEARING MEANS FOR ROTATABLY MOUNTING SAID ROTOR ON SAID SHAFT PERMITTING A METERED LEAKAGE OF PROPELLING FLUID THROUGH SAID BEARING MEANS OUT OF SAID ROTOR FLUID RECEIVING CHAMBER AND ESTABLISHING A FILM OF FLUID UPON WHICH SAID ROTOR RIDES.
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) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |