Patent US3326233A successfully refreshed from Google Patents.
US3326233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bi-directional valve
Assignee: Individual
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Filing: 1964-04-30
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Granted: 1967-06-20
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Expires: 1984-04-30
Abstract
No abstract record available.
Inventors
- 👤 John E Perruzzi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:31
CPC Classifications
F; F16; F16K; F16K15/00; Y; Y10; Y10T; Y10T137/00; Y10T137/6198; Y10T137/6253; Y10T137/6307; Y10T137/7722; Y10T137/7723; Y10T137/7726; Y10T137/7727; Y10T137/7837; Y10T137/7866; Y10T137/7869; Y10T137/7871; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/7913; Y10T137/7915
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
A BI-DIRECTIONAL VALVE FOR USE IN AN ESSENTIALLY VERTICAL PORTION OF A FLUID LINE COMPRISING: AN ESSENTIALLY VERTICALLY ORIENTED HOUSING HAVING AN INTERIOR OF VARYING CROSS-SECTION FORMING A VALVE CHAMBER; A FLOAT AXIALLY POSITIONABLE IN SAID VALVE CHAMBER; SAID FLOAT HAVING AN UPPER SURFACE SHAPED FOR SEATING IN AN UPPER PORTION OF SAID CHAMBER AND HAVING A LOWER SURFACE SHAPED FOR SEATING IN A LOWER PORTION OF SAID CHAMBER; WHEREBY SAID FLOAT PREVENTS FLUID FLOW THROUGH SAID VALVE CHAMBER BY SEATING IN SAID UPPER PORTION OF SAID CHAMBER WHEN SAID FLOW EXCEEDS A PREDETERMINED LIMIT AND BY SEATING IN SAID LOWER PORTION OF SAID CHAMBER WHEN SAID FLOW REVERSES; MEANS FOR UNSEATING THE FLOAT AFTER IT HAS BEEN SEATED BY EXCESSIVE FLOW; SAID VALVE CHAMBER OF VARYING CROSS-SECTION BEING IN THE SHAPE OF TWO FLOW CONTROLLING CHAMBERS IN SERIES; THE LOWER SECTION OF THE CHAMBER BEING A TAPERED TUBE PORTION DIVERGING IN THE DIRECTION OF FLOW; AND THE UPPER SECTION OF THE CHAMBER BEING A VENTURI PORTION; WHEREBY SAID TAPERED TUBE PORTION AND SAID VENTURI PORTION ARE CONTIGUOUS.
Claim 2
Dependent Claim
178 words
A BI-DIRECTIONAL VALVE FOR USE IN AN ESSENTIALLY VERTICAL PORTION OF A FLUID LINE COMPRISING: AN ESSENTIALLY VERTICALLY ORIENTED HOUSING HAVING AN INTERIOR OF VARYING CROSS-SECTION FORMING A VALVE CHAMBER; A FLOAT AXIALLY POSITIONABLE IN SAID VALVE CHAMBER; SAID FLOAT HAVING AN UPPER SURFACE SHAPED FOR SEATING IN AN UPPER PORTION OF SAID CHAMBER AND HAVING A LOWER SURFACE SHAPED FOR SEATING IN A LOWER PORTION OF SAID CHAMBER; WHEREBY SAID FLOAT PREVENTS FLUID FLOW THROUGH SAID VALVE CHAMBER BY SEATING IN SAID UPPER PORTION OF SAID CHAMBER WHEN SAID FLOW EXCEEDS A PREDETERMINED LIMIT AND BY SEATING IN SAID LOWER PORTION OF SAID CHAMBER WHEN SAID FLOW REVERSES; MEANS FOR UNSEATING THE FLOAT AFTER IT HAS BEEN SEATED BY EXCESSIVE FLOW; SAID VALVE CHAMBER OF VARYING CROSS-SECTION BEING IN THE SHAPE OF TWO FLOW CONTROLLING CHAMBERS IN SERIES; THE LOWER SECTION OF THE CHAMBER BEING A TAPERED TUBE PORTION DIVERGING IN THE DIRECTION OF FLOW; AND THE UPPER SECTION OF THE CHAMBER BEING A VENTURI PORTION; WHEREBY SAID TAPERED TUBE PORTION AND SAID VENTURI PORTION ARE CONTIGUOUS.
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) | 1970-06-19 | 1970-12-19 | 1971-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-19 | 1974-12-19 | 1975-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-19 | 1978-12-19 | 1979-06-20 | $7700.00 | Window Closed / Lapsed |