Patent US3123334A successfully refreshed from Google Patents.
US3123334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary gate valve
Assignee: —
•
Filing: —
•
Granted: 1964-03-03
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Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:25
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/06; F16K5/0621
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
142 words
AN APPARATUS FOR ALTERNATELY CLOSING AND PROVIDING A FULL DIAMETER OPENING IN THE END OF A PIPE, COMPRISING A CARRIER MOUNTED TO MOVE ALONG THE PIPE, A PAIR OF TRUNNION STUBS ATTACHED TO THE CARRIER AT OPPOSITE SIDES OF THE PIPE, A HEMISPHERICAL SHELL SEGMENT GATE OF RADIUS APPROXIMATELY FIFTY PERCENT OR MORE GREATER THAN THAT OF THE PIPE ROTATABLY ATTACHED TO THE TRUNNION STUBS, THE CENTRAL POINT OF THE COMMON CENTER LINE OF THE TRUNNIONS BEING LOCATED AT A DISTANCE FROM THE END SURFACE OF THE PIPE APPROXIMATELY EQUAL TO THE INSIDE RADIUS OF THE HEMISPHERICAL SEGMENT, AND MEANS TO MOVE THE CARRIER ALONG THE PIPE TO SEAT THE GATE AT THE PIPE END WHEN THE GATE IS ROTATED TO CLOSE SAID END, AND TO UNSEAT THE GATE AT SAID PIPE END WHEN THE GATE IS ROTATED TO OPEN SAID END.
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) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |