US3411520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Maximum pressure selector
Assignee: Individual
•
Filing: 1964-07-31
•
Granted: 1968-11-19
•
Expires: 1984-07-31
Abstract
No abstract record available.
Inventors
- 👤 Romald E Bowles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:14
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/14; F15C1/143; F15C1/02; F15C1/06; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2164; Y10T137/2169
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A PURE FLUID MAXIMUM PRESSURE SELECTOR FOR PROVIDING A FLUID OUTPUT SIGNAL HAVING A PRESSURE WHICH IS ALWAYS SUBSTANTIALLY EQUAL TO THE HIGHEST PRESSURE OF A PLURALITY OF INPUT PRESSURE SIGNALS COMPRISING: AT LEAST FIRST AND SECOND INPUT PASSAGES HAVING EGRESS ORIFICES; MEANS FOR CONNECTING SAID INPUT PASSAGES TO RECEIVE RESPECTIVE ONES OF SAID INPUT PRESSURE SIGNALS; AN OUTPUT PASSAGE FOR CONDUCTING SAID FLUID OUTPUT SIGNAL LOCATED DOWNSTREAM OF SAID INPUT PASSAGES AND HAVING AN INGRESS ORIFICE; SAID INGRESS ORIFICE OF SAID PASSAGE BEING LOCATED DOWNSTREAM OF SAID EGRESS ORIFICES OF SAID INPUT PASSAGES BY A DISTANCE OF BETWEEN TWO AND SIX TIMES THE WIDTH OF SAID EGRESS ORIFICES; THE ANGULAR RELATIONSHIP BETWEEN SAID INPUT PASSAGES BEING SUCH THAT THEIR CENTERLINES INTERSECT IN THE REGION OF SAID INGRESS ORIFICE OF SAID OUTPUT PASSAGE; AND THE REGION BETWEEN SAID INPUT AND OUTPUT PASSAGES HAVING SUFFICIENT VOLUME TO MAINTAIN AMBIENT PRESSURE IN SAID REGION.
Claim 2
Dependent Claim
152 words
A PURE FLUID MAXIMUM PRESSURE SELECTOR FOR PROVIDING A FLUID OUTPUT SIGNAL HAVING A PRESSURE WHICH IS ALWAYS SUBSTANTIALLY EQUAL TO THE HIGHEST PRESSURE OF A PLURALITY OF INPUT PRESSURE SIGNALS COMPRISING: AT LEAST FIRST AND SECOND INPUT PASSAGES HAVING EGRESS ORIFICES; MEANS FOR CONNECTING SAID INPUT PASSAGES TO RECEIVE RESPECTIVE ONES OF SAID INPUT PRESSURE SIGNALS; AN OUTPUT PASSAGE FOR CONDUCTING SAID FLUID OUTPUT SIGNAL LOCATED DOWNSTREAM OF SAID INPUT PASSAGES AND HAVING AN INGRESS ORIFICE; SAID INGRESS ORIFICE OF SAID PASSAGE BEING LOCATED DOWNSTREAM OF SAID EGRESS ORIFICES OF SAID INPUT PASSAGES BY A DISTANCE OF BETWEEN TWO AND SIX TIMES THE WIDTH OF SAID EGRESS ORIFICES; THE ANGULAR RELATIONSHIP BETWEEN SAID INPUT PASSAGES BEING SUCH THAT THEIR CENTERLINES INTERSECT IN THE REGION OF SAID INGRESS ORIFICE OF SAID OUTPUT PASSAGE; AND THE REGION BETWEEN SAID INPUT AND OUTPUT PASSAGES HAVING SUFFICIENT VOLUME TO MAINTAIN AMBIENT PRESSURE IN SAID REGION.
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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) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |