Patent US561824A successfully refreshed from Google Patents.
Patent US3307787A successfully refreshed from Google Patents.
US3307787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fountain
Assignee: Individual
•
Filing: 1966-05-24
•
Granted: 1967-03-07
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Expires: 1986-05-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Harold H Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:26
CPC Classifications
B; B05; B05B; B05B17/00; B05B17/08; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A FLUID FLOW CONTROL DEVICE COMPRISING A BODY HAVING AN AXIAL OPENING, A PLURALITY OF FLOW PASSAGEWAYS PROVIDED IN SAID BODY AND LEADING FROM THE AXIAL OPENING, A SLEEVE VALVE SLIDABLY RECEIVED IN CLOSE ENGAGEMENT WITHIN THE AXIAL OPENING, AT LEAST ONE PORT PROVIDED IN THE SLEEVE VALVE AND ADAPTED TO BE PLACED IN SEQUENTIAL COMMUNICATION WITH RESPECTIVE ONES OF THE PASSAGEWAYS IN SAID BODY, SAID SLEEVE VALVE HAVING PARTITION MEANS PROVIDED WITH AN INLET ORIFICE LEADING TO AN UPPER CHAMBER PROVIDED IN SAID DEVICE, AN ENLARGED END PORTION OF THE SLEEVE VALVE POSITIONED WITHIN THE CHAMBER AND HAVING AN UPPER SURFACE AREA LARGER THAN THE LOWER SURFACE AREA OF SAID PARTITION MEANS, SAID DEVICE HAVING A DISTANCE ORIFICE OF GREATER DIAMETER THAN THAT OF THE INLET ORIFICE, AND A CONTROL VALVE OPERATIVELY ASSOCIATED WITH THE SLEEVE VALVE AND ADAPTED TO BLOCK SAID DISCHARGE ORIFICE IN AN OPERATING POSITION THEREOF.
Claim 2
Dependent Claim
150 words
A FLUID FLOW CONTROL DEVICE COMPRISING A BODY HAVING AN AXIAL OPENING, A PLURALITY OF FLOW PASSAGEWAYS PROVIDED IN SAID BODY AND LEADING FROM THE AXIAL OPENING, A SLEEVE VALVE SLIDABLY RECEIVED IN CLOSE ENGAGEMENT WITHIN THE AXIAL OPENING, AT LEAST ONE PORT PROVIDED IN THE SLEEVE VALVE AND ADAPTED TO BE PLACED IN SEQUENTIAL COMMUNICATION WITH RESPECTIVE ONES OF THE PASSAGEWAYS IN SAID BODY, SAID SLEEVE VALVE HAVING PARTITION MEANS PROVIDED WITH AN INLET ORIFICE LEADING TO AN UPPER CHAMBER PROVIDED IN SAID DEVICE, AN ENLARGED END PORTION OF THE SLEEVE VALVE POSITIONED WITHIN THE CHAMBER AND HAVING AN UPPER SURFACE AREA LARGER THAN THE LOWER SURFACE AREA OF SAID PARTITION MEANS, SAID DEVICE HAVING A DISTANCE ORIFICE OF GREATER DIAMETER THAN THAT OF THE INLET ORIFICE, AND A CONTROL VALVE OPERATIVELY ASSOCIATED WITH THE SLEEVE VALVE AND ADAPTED TO BLOCK SAID DISCHARGE ORIFICE IN AN OPERATING POSITION THEREOF.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |