US3082991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differentially operated valve
Assignee: Individual
•
Filing: 1959-12-30
•
Granted: 1963-03-26
•
Expires: 1979-12-30
Abstract
No abstract record available.
Inventors
- 👤 John E Watkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:05
CPC Classifications
B; B01; B01J; B01J4/00; B01J4/001; G; G05; G05D; G05D11/00; G05D11/02; G05D11/03; G05D23/00; G05D23/01; G05D23/12; G05D23/121; G05D23/122; G05D9/00; G05D9/04; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3006; Y10T137/3021; Y10T137/304; Y10T137/3052; Y10T137/3056; Y10T137/7722; Y10T137/7781
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
A FLOW CONTROL VALVE COMPRISING, IN COMBINATION, AN ELONGATED VALVE BODY HAVING OUTWARDLY OPENING RECESSES IN OPPOSITE ENDS, INLET AND OUTLET PORTS OPENING AT OPPOSITE SIDES OF SAID VALVE BODY INTERMEDIATE SAID RECESSES, SAID PORTS OPENING TO LATERALLY EXTENDING PASSAGES SPACED APART AXIALLY OF THE VALVE BODY AND CONNECTED BY AN AXIALLY DISPOSED PASSAGE FORMING A VALVE SEAT, SAID RECESSES HAVING OPENINGS ALINED WITH SAID AXIAL PASSAGE COMMUNICATING WITH THE RESPECTIVE LATERALLY SPACED PASSAGES, UNBALANCE VALVE MEANS INCLUDING A MOVABLE VALVE MEMBER HAVING A STEM EXTENDING THROUGH SAID AXIAL PASSAGE AND SAID OPENINGS WITH ITS ENDS PROJECTING INTO SAID RECESS, A VALVE ELEMENT CARRIED BY SAID STEM AND MOVABLE RELATIVE TO SAID VALVE SEAT TO OPEN OR CLOSE SAID AXIAL PASSAGE AS SAID VALVE MEMBER IS SHIFTED AXIALLY BETWEEN TWO POSITIONS, SAID VALVE ELEMENT HAVING AN EFFECTIVE AREA, EXPOSED TO PRESSURE FROM SAID INLET PORT PRODUCING AN UNBALANCING FORCE TENDING TO RAISE THE VALVE ELEMENT OFF SAID SEAT OPENING SAID AXIAL PASSAGE, RESILIENT DIAPHRAGMS CLOSING THE OPEN ENDS OF SAID RECESSES, END CAPS REMOVABLY SECURED TO OPPOSITE ENDS OF THE VALVE
Claim 2
Dependent Claim
181 words
A FLOW CONTROL VALVE COMPRISING, IN COMBINATION, AN ELONGATED VALVE BODY HAVING OUTWARDLY OPENING RECESSES IN OPPOSITE ENDS, INLET AND OUTLET PORTS OPENING AT OPPOSITE SIDES OF SAID VALVE BODY INTERMEDIATE SAID RECESSES, SAID PORTS OPENING TO LATERALLY EXTENDING PASSAGES SPACED APART AXIALLY OF THE VALVE BODY AND CONNECTED BY AN AXIALLY DISPOSED PASSAGE FORMING A VALVE SEAT, SAID RECESSES HAVING OPENINGS ALINED WITH SAID AXIAL PASSAGE COMMUNICATING WITH THE RESPECTIVE LATERALLY SPACED PASSAGES, UNBALANCE VALVE MEANS INCLUDING A MOVABLE VALVE MEMBER HAVING A STEM EXTENDING THROUGH SAID AXIAL PASSAGE AND SAID OPENINGS WITH ITS ENDS PROJECTING INTO SAID RECESS, A VALVE ELEMENT CARRIED BY SAID STEM AND MOVABLE RELATIVE TO SAID VALVE SEAT TO OPEN OR CLOSE SAID AXIAL PASSAGE AS SAID VALVE MEMBER IS SHIFTED AXIALLY BETWEEN TWO POSITIONS, SAID VALVE ELEMENT HAVING AN EFFECTIVE AREA, EXPOSED TO PRESSURE FROM SAID INLET PORT PRODUCING AN UNBALANCING FORCE TENDING TO RAISE THE VALVE ELEMENT OFF SAID SEAT OPENING SAID AXIAL PASSAGE, RESILIENT DIAPHRAGMS CLOSING THE OPEN ENDS OF SAID RECESSES, END CAPS REMOVABLY SECURED TO OPPOSITE ENDS OF THE VALVE
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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) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |