Patent US3286736A successfully refreshed from Google Patents.
US3286736A
Expired / Lapsed
US
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Valve for use with viscous liquids
Assignee: BP PLC
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Filing: 1963-06-10
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Granted: 1966-11-22
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Expires: 1983-06-10
Abstract
No abstract record available.
Inventors
- 👤 Guillermic Andre Franc Joachim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:59
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/52; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86928; Y10T137/87265; Y10T137/87917; Y10T137/87981; Y10T137/88038
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A VALVE HAVING A LOW LOAD LOSS IN RELATION TO MOTIVE PRESSURE FOR SELECTIVELY REGULATING AND STOPPING THE FLOW OF VISCOUS LIQUIDS, THE VALVE INCLUDING TWO MEMBERS ARRANGED SO AS TO BE MOVABLE RELATIVE TO ONE ANOTHER TO OPEN AND CLOSE A PASSAGE THROUGH THE VALVE, THE TWO MEMBERS HAVING BEVELLED CO-OPERATING EDGES SUCH THAT WHEN THE MEMBERS ARE IN AN OPEN POSITION THE PASSAGE SO FORMED HAS A PERIPHERY COMPLETELY COMPRISED OF BEVELLED EDGES.
Claim 2
Dependent Claim
75 words
A VALVE HAVING A LOW LOAD LOSS IN RELATION TO MOTIVE PRESSURE FOR SELECTIVELY REGULATING AND STOPPING THE FLOW OF VISCOUS LIQUIDS, THE VALVE INCLUDING TWO MEMBERS ARRANGED SO AS TO BE MOVABLE RELATIVE TO ONE ANOTHER TO OPEN AND CLOSE A PASSAGE THROUGH THE VALVE, THE TWO MEMBERS HAVING BEVELLED CO-OPERATING EDGES SUCH THAT WHEN THE MEMBERS ARE IN AN OPEN POSITION THE PASSAGE SO FORMED HAS A PERIPHERY COMPLETELY COMPRISED OF BEVELLED EDGES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |