Patent US3358709A successfully refreshed from Google Patents.
US3358709A
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Check valves
Assignee: TESORO PUMP & VALVE Co A CORP OF
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Filing: 1963-12-06
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Granted: 1967-12-19
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Expires: 1983-12-06
Abstract
No abstract record available.
Inventors
- 👤 Griffith N Thresher
- 👤 Robert E Elliott
- 👤 Alfred D Hogan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:59
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/03; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7898; Y10T137/7901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A CHECK VALVE COMPRISING: A VALVE BODY HAVING A FLUID PASSAGE THERETHROUGH DEFINED IN PART BY A PLANAR VALVE SEAT AND A SMALL DIAMETER HINGE PIN OPENING THEREIN; A HINGE PIN ROTATIVELY SUPPORTED IN SAID BODY ABOUT A FIXED AXIS ADJACENT AND EXTERIORLY OF SAID VALVE SEAT AND IN A PLANE SUBSTANTIALLY PARALLEL THE PLANE OF SAID VALVE SEAT, A PORTION OF SAID HINGE PIN EXTENDING SEALABLY EXTERIORLY OF SAID BODY THROUGH SAID HINGE PIN OPENING; AND A CLAPPER SUPPORTED TO SAID HINGE PIN, SAID CLAPPER HAVING A SEATING FACE SEALABLY ENGAGING SAID BODY VALVESEAT WHEN SAID CLAPPER IS PIVOTED TO THE CLOSED POSITION, SAID CLAPPER RIGIDLY SUPPORTED TO SAID HINGE PIN IN THE PLANE OF THE FACE OF THE CLAPPER AND LOOSELY SUPPORTED IN THE PLANE OF THE HINGE PIN PERPENDICULAR TO THE CLAPPER SEATING FACE.
Claim 2
Dependent Claim
137 words
A CHECK VALVE COMPRISING: A VALVE BODY HAVING A FLUID PASSAGE THERETHROUGH DEFINED IN PART BY A PLANAR VALVE SEAT AND A SMALL DIAMETER HINGE PIN OPENING THEREIN; A HINGE PIN ROTATIVELY SUPPORTED IN SAID BODY ABOUT A FIXED AXIS ADJACENT AND EXTERIORLY OF SAID VALVE SEAT AND IN A PLANE SUBSTANTIALLY PARALLEL THE PLANE OF SAID VALVE SEAT, A PORTION OF SAID HINGE PIN EXTENDING SEALABLY EXTERIORLY OF SAID BODY THROUGH SAID HINGE PIN OPENING; AND A CLAPPER SUPPORTED TO SAID HINGE PIN, SAID CLAPPER HAVING A SEATING FACE SEALABLY ENGAGING SAID BODY VALVESEAT WHEN SAID CLAPPER IS PIVOTED TO THE CLOSED POSITION, SAID CLAPPER RIGIDLY SUPPORTED TO SAID HINGE PIN IN THE PLANE OF THE FACE OF THE CLAPPER AND LOOSELY SUPPORTED IN THE PLANE OF THE HINGE PIN PERPENDICULAR TO THE CLAPPER SEATING FACE.
References Cited (Backward Citations)
US496045A
Cited
GB189917947A
Cited
US1980495A
Cited
US2282532A
Cited
US2611435A
Cited
FR1182255A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |