US3269692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball valve construction
Assignee: Individual
•
Filing: 1965-05-25
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Granted: 1966-08-30
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Expires: 1985-05-25
Abstract
No abstract record available.
Inventors
- 👤 Homer J Shafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:08
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/22; F16K5/227; F16K27/00; F16K27/10; F16K27/107; F16K5/06; F16K5/0663; F16K5/0673; F16K5/0684
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN A TRUNNION-MOUNTED BALL VALVE HAVING A HOUSING FORMING A CAVITY LATERALLY AROUND THE BALL AND FLOW TUBES LONGITUDINALLY OF THE VALVE, SEATING RINGS ADJUSTABLE LONGITUDINALLY BETWEEN THE BALL AND THE FLOW TUBES, AND RESILIENT SEALS BETWEEN THE SEATING RINGS AND THE BALL, THE IMPROVEMENT COMPRISING MEANS FOR UTILIZING THE CAVITY PRESSURE TO FORCE THE SEATING RINGS ON THE DOWNSTREAM SIDE OF THE BALL TO SEAL AGAINST THE BALL RADIALLY OUTWARDLY OF THE RESILIENT SEAL, SAID MEANS COMPRISING A SEATING RING CONSTRUCTION HAVING A GREATER AREA EXPOSED TO CAVITY PRESSURE ACTING TOWARD THE BALL THAN ITS AREA EXPOSED TO CAVITY PRESSURE ACTING AWAY FROM THE BALL.
Claim 2
Dependent Claim
106 words
IN A TRUNNION-MOUNTED BALL VALVE HAVING A HOUSING FORMING A CAVITY LATERALLY AROUND THE BALL AND FLOW TUBES LONGITUDINALLY OF THE VALVE, SEATING RINGS ADJUSTABLE LONGITUDINALLY BETWEEN THE BALL AND THE FLOW TUBES, AND RESILIENT SEALS BETWEEN THE SEATING RINGS AND THE BALL, THE IMPROVEMENT COMPRISING MEANS FOR UTILIZING THE CAVITY PRESSURE TO FORCE THE SEATING RINGS ON THE DOWNSTREAM SIDE OF THE BALL TO SEAL AGAINST THE BALL RADIALLY OUTWARDLY OF THE RESILIENT SEAL, SAID MEANS COMPRISING A SEATING RING CONSTRUCTION HAVING A GREATER AREA EXPOSED TO CAVITY PRESSURE ACTING TOWARD THE BALL THAN ITS AREA EXPOSED TO CAVITY PRESSURE ACTING AWAY FROM THE BALL.
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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |