US3080144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-scoring valve
Assignee: Blaw Knox Co
•
Filing: 1959-12-24
•
Granted: 1963-03-05
•
Expires: 1979-12-24
Abstract
No abstract record available.
Inventors
- 👤 James D Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:41
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/42; F22B37/44; F22B37/446; F16; F16K; F16K1/00; F16K1/32; F16K1/34; F16K1/42; F16K1/422
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A VALVE STRUCTURE COMPRISING A CASING HAVING THEREIN A VALVE SEAT AND A PASSAGE SUBSTANTIALLY COAXIAL WITH THE VALVE SEAT AND A VALVE ELEMENT IN THE CASING HAVING A SEATING PORTION ADAPTED TO ENGAGE THE VALVE SEAT TO CLOSE THE VALVE AND A THROTTLING PORTION DISPOSED RELATIVELY TO THE SEATING PORTION SO THAT UPON MOVEMENT OF THE SEATING PORTION OF THE VALVE ELEMENT AWAY FROM THE SEAT WHEN THE VALVE IS OPENED THE THROTTLING PORTION MOVES IN SAID PASSAGE INTO A POSITION IN WHICH THE ANNULAR FLOW AREA BETWEEN THE THROTTLING PORTION OF THE VALVE ELEMENT AND THE PROXIMATE PORTION OF SAID PASSAGE IS LESS THAN THE ANNULAR FLOW AREA BETWEEN THE SEATING PORTION OF THE VALVE ELEMENT AND THE VALVE SEAT, SAID PASSAGE BEING DISPOSED RELATIVELY TO THE VALVE SEAT IN THE DIRECTION IN WHICH THE VALVE ELEMENT MOVES RELATIVELY TO THE CASING UPON OPENING OF THE VALVE.
Claim 2
Dependent Claim
149 words
A VALVE STRUCTURE COMPRISING A CASING HAVING THEREIN A VALVE SEAT AND A PASSAGE SUBSTANTIALLY COAXIAL WITH THE VALVE SEAT AND A VALVE ELEMENT IN THE CASING HAVING A SEATING PORTION ADAPTED TO ENGAGE THE VALVE SEAT TO CLOSE THE VALVE AND A THROTTLING PORTION DISPOSED RELATIVELY TO THE SEATING PORTION SO THAT UPON MOVEMENT OF THE SEATING PORTION OF THE VALVE ELEMENT AWAY FROM THE SEAT WHEN THE VALVE IS OPENED THE THROTTLING PORTION MOVES IN SAID PASSAGE INTO A POSITION IN WHICH THE ANNULAR FLOW AREA BETWEEN THE THROTTLING PORTION OF THE VALVE ELEMENT AND THE PROXIMATE PORTION OF SAID PASSAGE IS LESS THAN THE ANNULAR FLOW AREA BETWEEN THE SEATING PORTION OF THE VALVE ELEMENT AND THE VALVE SEAT, SAID PASSAGE BEING DISPOSED RELATIVELY TO THE VALVE SEAT IN THE DIRECTION IN WHICH THE VALVE ELEMENT MOVES RELATIVELY TO THE CASING UPON OPENING OF THE VALVE.
References Cited (Backward Citations)
DE43582C
Cited
US217745A
Cited
US2605107A
Cited
US1000455A
Cited
US1903816A
Cited
US2685294A
Cited
US2746471A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-04 | 1966-09-03 | 1967-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-04 | 1970-09-03 | 1971-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-04 | 1974-09-03 | 1975-03-05 | $7700.00 | Window Closed / Lapsed |