Patent US3155368A successfully refreshed from Google Patents.
US3155368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball valve seat construction
Assignee: Individual
•
Filing: 1961-06-28
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Granted: 1964-11-03
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Expires: 1981-06-28
Abstract
No abstract record available.
Inventors
- 👤 Homer J Shafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:11
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/06; F16K5/0663; F16K5/0684; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4358; Y10T137/4393; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412; Y10T29/49416; Y10T29/49421
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A BALL VALVE HAVING A BODY, ALIGNED INLET AND OUTLET TUBES WELDED TO SAID BODY AND HAVING SEATING SURFACES AT THEIR INNER ENDS, A ROTATABLE BALL SHUT-OFF HAVING A FLOW PASSAGE THERETHROUGH AND A TRANSVERSELY EXTENDING STEM JOURNALED IN SAID BODY, ANNULAR GROOVES IN SAID BALL SURROUNDING THE INNER ENDS OF SAID INLET AND OUTLET TUBES IN THE FULLY CLOSED POSITION OF THE BALL WITH THE GROOVE OPENINGS AT LEAST PARTLY WITHIN THE SEATING SURFACES ON SAID TUBES, RESILIENT RING SEALS INSERTABLE THROUGH SAID TUBES INTO SAID GROOVES AND HAVING EXPOSED PORTIONS TO MAKE SEALS AGAINST SAID SEATING SURFACES, AND RETAINING MEANS INSERTABLE THROUGH THE TUBES FOR HOLDING SAID RING SEALS IN SAID GROOVES.
Claim 2
Dependent Claim
114 words
A BALL VALVE HAVING A BODY, ALIGNED INLET AND OUTLET TUBES WELDED TO SAID BODY AND HAVING SEATING SURFACES AT THEIR INNER ENDS, A ROTATABLE BALL SHUT-OFF HAVING A FLOW PASSAGE THERETHROUGH AND A TRANSVERSELY EXTENDING STEM JOURNALED IN SAID BODY, ANNULAR GROOVES IN SAID BALL SURROUNDING THE INNER ENDS OF SAID INLET AND OUTLET TUBES IN THE FULLY CLOSED POSITION OF THE BALL WITH THE GROOVE OPENINGS AT LEAST PARTLY WITHIN THE SEATING SURFACES ON SAID TUBES, RESILIENT RING SEALS INSERTABLE THROUGH SAID TUBES INTO SAID GROOVES AND HAVING EXPOSED PORTIONS TO MAKE SEALS AGAINST SAID SEATING SURFACES, AND RETAINING MEANS INSERTABLE THROUGH THE TUBES FOR HOLDING SAID RING SEALS IN SAID GROOVES.
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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) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |