US3304879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid operated device
Assignee: Individual
•
Filing: 1965-11-15
•
Granted: 1967-02-21
•
Expires: 1985-11-15
Abstract
No abstract record available.
Inventors
- 👤 Elliott F Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:02
CPC Classifications
F; F01; F01C; F01C1/00; F01C1/30; F01C1/34; F01C1/344; F01C1/3446; F03; F03C; F03C2/00; F03C2/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A FLUID DEVICE COMPRISING: A CASING MEMBER HAVING A BORE THEREIN, SAID BORE HAVING AN UPSTREAM AND A DOWNSTREAM SIDE; A ROTOR MEMBER MOUNTED IN SAID CASING MEMBER AND HAVING A PLURALITY OF SUBSTANTIALLY RADIALLY EXTENDING VANE SLOTS; A VANE SLIDABLY MOUNTED IN EACH OF SAID VANE SLOTS, EACH OF SAID VANES COMPRISING VALVE MEANS FOR CONTROLLING A FLUID TO SAID BORE THROUGH PASSAGE MEANS LEADING TO THE SIDE OF SAID VANE TOWARDS THE DOWNSTREAM SIDE OF SAID BORE, SAID VANES BEING MOVABLE IN SAID SLOTS FOR OPENING AND CLOSING SAID PASSAGE MEANS; A FIRST FLUID INLET PASSAGEWAY FOR COMMUNICATING FLUID TO SAID PASSAGE MEANS; FLUID OUTLET MEANS CONNECTED TO THE DOWNSTREAM SIDE OF SAID BORE FOR EXHAUSTING FLUID THREFROM; AND A SECOND FLUID INLET PASSAGEWAY CONNECTED TO THE UPSTREAM SIDE OF SAID BORE FOR ADMITTING A FLUID INTO SAID BORE;
Claim 2
Dependent Claim
141 words
A FLUID DEVICE COMPRISING: A CASING MEMBER HAVING A BORE THEREIN, SAID BORE HAVING AN UPSTREAM AND A DOWNSTREAM SIDE; A ROTOR MEMBER MOUNTED IN SAID CASING MEMBER AND HAVING A PLURALITY OF SUBSTANTIALLY RADIALLY EXTENDING VANE SLOTS; A VANE SLIDABLY MOUNTED IN EACH OF SAID VANE SLOTS, EACH OF SAID VANES COMPRISING VALVE MEANS FOR CONTROLLING A FLUID TO SAID BORE THROUGH PASSAGE MEANS LEADING TO THE SIDE OF SAID VANE TOWARDS THE DOWNSTREAM SIDE OF SAID BORE, SAID VANES BEING MOVABLE IN SAID SLOTS FOR OPENING AND CLOSING SAID PASSAGE MEANS; A FIRST FLUID INLET PASSAGEWAY FOR COMMUNICATING FLUID TO SAID PASSAGE MEANS; FLUID OUTLET MEANS CONNECTED TO THE DOWNSTREAM SIDE OF SAID BORE FOR EXHAUSTING FLUID THREFROM; AND A SECOND FLUID INLET PASSAGEWAY CONNECTED TO THE UPSTREAM SIDE OF SAID BORE FOR ADMITTING A FLUID INTO SAID BORE;
References Cited (Backward Citations)
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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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |