US3111091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for reducing fluid pressure
Assignee: St Barnabas Free Home Inc
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Filing: 1962-03-02
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Granted: 1963-11-19
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Expires: 1982-03-02
Abstract
No abstract record available.
Inventors
- 👤 Paul O W Hopkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:23
CPC Classifications
F; F15; F15D; F15D1/00; F15D1/02; F15D1/025; F16; F16L; F16L55/00; F16L55/02; F16L55/027; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87571; Y10T137/87587; Y10T137/87619
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
AN IMPULSE-CAVIATION PRESSURE REDUCER COMPRISING A FLOW MEMBER HAVING A FLUID PASSAGE THERETHROUGH PROVIDED WITH INLET AND OUTLET ENDS, THE PASSAGE HAVING A WALL INCLINED PART WAY ACROSS IT TOWARD ITS OUTLET END AND THEN EXTENDING SUBSTANTIALLY PERPENDICULARLY TO THE LONGITUDINAL AXIS OF THE PASSAGE AND TERMINATING IN A KNIFE EDGE, AND A WALL EXTENDING LENGTHWISE OF THE PASSAGE A SLIGHT DISTANCE FROM THE DOWNSTREAM SIDE OF SAID KNIFE EDGE AND FORMING A GAP BETWEEN THEM, WHEREBY THE FLUID PRESSURE IN SAID GAP WILL BE REDUCED AS FLUID FLOWING THROUGH SAID PASSAGE LEAVES THE KNIFE EDGE, AND SAID MEMBER BEING PROVIDED WITH AN INLET CONNECTED WITH SAID GAP.
Claim 2
Dependent Claim
108 words
AN IMPULSE-CAVIATION PRESSURE REDUCER COMPRISING A FLOW MEMBER HAVING A FLUID PASSAGE THERETHROUGH PROVIDED WITH INLET AND OUTLET ENDS, THE PASSAGE HAVING A WALL INCLINED PART WAY ACROSS IT TOWARD ITS OUTLET END AND THEN EXTENDING SUBSTANTIALLY PERPENDICULARLY TO THE LONGITUDINAL AXIS OF THE PASSAGE AND TERMINATING IN A KNIFE EDGE, AND A WALL EXTENDING LENGTHWISE OF THE PASSAGE A SLIGHT DISTANCE FROM THE DOWNSTREAM SIDE OF SAID KNIFE EDGE AND FORMING A GAP BETWEEN THEM, WHEREBY THE FLUID PRESSURE IN SAID GAP WILL BE REDUCED AS FLUID FLOWING THROUGH SAID PASSAGE LEAVES THE KNIFE EDGE, AND SAID MEMBER BEING PROVIDED WITH AN INLET CONNECTED WITH SAID GAP.
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) | 1966-11-18 | 1967-05-20 | 1967-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-18 | 1971-05-20 | 1971-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-18 | 1975-05-20 | 1975-11-19 | $7700.00 | Window Closed / Lapsed |