Patent US3244399A successfully refreshed from Google Patents.
US3244399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gate valve
Assignee: Cooper Industries LLC
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Filing: 1962-12-19
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Granted: 1966-04-05
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Expires: 1982-12-19
Abstract
No abstract record available.
Inventors
- 👤 Marvin R Jones
- 👤 Albert E Woelfel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:38
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/14; F16K31/143; Y; Y10; Y10T; Y10T137/00; Y10T137/1189; Y10T137/1353
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
200 words
A GATE VALVE, COMPRISING A BODY HAVING A FLOWWAY THERETHROUGH AND A CAVITY INTERSECTING THE FLOWWAY, A SOLID SLAB GATE HAVING A PORT THERETHROUGH AND BEING MOVABLE WITHIN THE BODY CAVITY FOR OPENING AND CLOSING THE FLOWWAY, MEANS ABOUT THE FLOWWAY FOR SEALING WITH OPPOSITE SIDES OF THE GATE, A RECIPROCABLE STEM EXTENDING SEALABLY THROUGH THE BODY INTO THE CAVITY AND CONNECTED TO THE GATE FOR MOVING THE GATE BETWEEN ITS OPENED AND CLOSED POSITIONS, MEANS ON THE BODY FOR URGING THE STEM IN A DIRECTION TOWARD THE FLOWWAY SO AS TO MOVE THE GATE TO ONE OF SAID POSITIONS, AND AN AUXILIARY VALVE IN THE GATE HAVING A CHAMBER, PASSAGEWAYS CONNECTING OPPOSITE ENDS OF THE CHAMBER WITH THE FLOWWAY ON OPPOSITE SIDES OF THE GATE DURING THAT PORTION OF THE MOVEMENT OF THE GATE IN WHICH A SOLID PORTION OF SAID GATE IS ACROSS THE FLOWWAY TO CLOSE SAME, A SEAT ABOUT EACH OF SAID PASSAGEWAYS IN THE CHAMBER, ADDITIONAL PASSAGEWAYS CONNECTING THE CHAMBER INTERMEDIATE THE SEATS WITH THE PORT IN THE GATE AND WITH THE BODY CAVITY, AND A VALVE MEMBER SHIFTABLE IN THE CHAMBER BETWEEN SAID SEATS FOR CLOSING ONE OR THE OTHER OF THE FIRST-MENTIONED PASSAGEWAYS.
Claim 2
Dependent Claim
200 words
A GATE VALVE, COMPRISING A BODY HAVING A FLOWWAY THERETHROUGH AND A CAVITY INTERSECTING THE FLOWWAY, A SOLID SLAB GATE HAVING A PORT THERETHROUGH AND BEING MOVABLE WITHIN THE BODY CAVITY FOR OPENING AND CLOSING THE FLOWWAY, MEANS ABOUT THE FLOWWAY FOR SEALING WITH OPPOSITE SIDES OF THE GATE, A RECIPROCABLE STEM EXTENDING SEALABLY THROUGH THE BODY INTO THE CAVITY AND CONNECTED TO THE GATE FOR MOVING THE GATE BETWEEN ITS OPENED AND CLOSED POSITIONS, MEANS ON THE BODY FOR URGING THE STEM IN A DIRECTION TOWARD THE FLOWWAY SO AS TO MOVE THE GATE TO ONE OF SAID POSITIONS, AND AN AUXILIARY VALVE IN THE GATE HAVING A CHAMBER, PASSAGEWAYS CONNECTING OPPOSITE ENDS OF THE CHAMBER WITH THE FLOWWAY ON OPPOSITE SIDES OF THE GATE DURING THAT PORTION OF THE MOVEMENT OF THE GATE IN WHICH A SOLID PORTION OF SAID GATE IS ACROSS THE FLOWWAY TO CLOSE SAME, A SEAT ABOUT EACH OF SAID PASSAGEWAYS IN THE CHAMBER, ADDITIONAL PASSAGEWAYS CONNECTING THE CHAMBER INTERMEDIATE THE SEATS WITH THE PORT IN THE GATE AND WITH THE BODY CAVITY, AND A VALVE MEMBER SHIFTABLE IN THE CHAMBER BETWEEN SAID SEATS FOR CLOSING ONE OR THE OTHER OF THE FIRST-MENTIONED PASSAGEWAYS.
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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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |