US3431930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual fluid vortex valve
Assignee: Bowles Engineering Corp
•
Filing: 1966-10-12
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Granted: 1969-03-11
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Expires: 1986-10-12
Abstract
No abstract record available.
Inventors
- 👤 Romald E Bowles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:47
CPC Classifications
F; F16; F16K; F16K13/00; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2076; Y10T137/2087; Y10T137/2109; Y10T137/2115
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A PURE FLUID VORTEX CONTROL DEVICE COMPRISING A FIRST GENERALLY CYLINDRICAL VORTEX CHAMBER HAVING AN END WALL, A SECOND GENERALLY CYLINDRICAL VORTEX CHAMBER HAVING AN END WALL, SAID CHAMBERS BEING COAXIAL AND CONTIGUOUS, A FURTHER WALL FORMING A COMMON END WALL OF AT LEAST A PART OF EACH OF SAID CHAMBERS OPPOSITE EACH OF SAID END WALLS, SAID END WALL OF SAID FIRST CHAMBER HAVING AN AXIAL EGRESS ORIFICE, SAID FURTHER WALL HAVING AN AXIAL ORIFICE WHICH IS LARGER THAN THE DIAMETER OF SAID EGRESS ORIFICE OF SAID FIRST
Claim 2
Dependent Claim
89 words
A PURE FLUID VORTEX CONTROL DEVICE COMPRISING A FIRST GENERALLY CYLINDRICAL VORTEX CHAMBER HAVING AN END WALL, A SECOND GENERALLY CYLINDRICAL VORTEX CHAMBER HAVING AN END WALL, SAID CHAMBERS BEING COAXIAL AND CONTIGUOUS, A FURTHER WALL FORMING A COMMON END WALL OF AT LEAST A PART OF EACH OF SAID CHAMBERS OPPOSITE EACH OF SAID END WALLS, SAID END WALL OF SAID FIRST CHAMBER HAVING AN AXIAL EGRESS ORIFICE, SAID FURTHER WALL HAVING AN AXIAL ORIFICE WHICH IS LARGER THAN THE DIAMETER OF SAID EGRESS ORIFICE OF SAID FIRST
References Cited (Backward Citations)
US1474603A
Cited
US1629288A
Cited
US2566788A
Cited
US3246883A
Cited
US3311120A
Cited
US3373759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |