US3228652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve having downstream fluid pressure seal
Assignee: Crane Instrumentation and Sampling Inc
•
Filing: 1962-02-09
•
Granted: 1966-01-11
•
Expires: 1982-02-09
Abstract
No abstract record available.
Inventors
- 👤 Doron S Antrim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:09
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/06; F16K5/0663; F16K5/0673; F16K5/0678; F16K5/0626; F16K5/0642; F16K15/00; F16K15/14; F16K15/141; F16K15/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A BALL VALVE COMPRISING THE COMBINATION OF A VALVE BODY HAVING A CAVITY CONNECTING SPACED PORTS, A ROTATABLE BALL IN SAID CAVITY WITH A FLUID PASSAGE THERETHROUGH TO CONTROL FLUID FLOW BETWEEN SAID SPACED PORTS, SPACED SEALING RINGS ON OPPOSITE SIDES OF SAID BALL ADAPTED TO FORM A SEAL AT OPPOSITE ENDS OF THE PASSAGE ON THE BALL SURFACE, A SECOND FLUID PASSAGE INCLUDING SAID CAVITY CONNECTING SAID SPACED PORTS, AND A CHECK VALVE AT EACH END OF SAID SECOND PASSAGE PERMITTING FLUID FLOW INTO THE SECOND PASSAGE FROM THE PORTS AND PREVENTING FLUID FLOW IN THE OPPOSITE DIRECTION COMPRISING A FLARED PORTION IN SAID SECOND
Claim 2
Dependent Claim
106 words
A BALL VALVE COMPRISING THE COMBINATION OF A VALVE BODY HAVING A CAVITY CONNECTING SPACED PORTS, A ROTATABLE BALL IN SAID CAVITY WITH A FLUID PASSAGE THERETHROUGH TO CONTROL FLUID FLOW BETWEEN SAID SPACED PORTS, SPACED SEALING RINGS ON OPPOSITE SIDES OF SAID BALL ADAPTED TO FORM A SEAL AT OPPOSITE ENDS OF THE PASSAGE ON THE BALL SURFACE, A SECOND FLUID PASSAGE INCLUDING SAID CAVITY CONNECTING SAID SPACED PORTS, AND A CHECK VALVE AT EACH END OF SAID SECOND PASSAGE PERMITTING FLUID FLOW INTO THE SECOND PASSAGE FROM THE PORTS AND PREVENTING FLUID FLOW IN THE OPPOSITE DIRECTION COMPRISING A FLARED PORTION IN SAID SECOND
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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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |