US3332438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control valve for oil and gas wells
Assignee: CANWELL MANUFACTURING Inc PO BOX 827 DENISON TX
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Filing: 1965-04-14
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Granted: 1967-07-25
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Expires: 1985-04-14
Abstract
No abstract record available.
Inventors
- 👤 Abdullaev Asker Alekper Ogly
- 👤 Alizade Fuad Agasamedovich
- 👤 Aslanov Mukhtar Makhmud Ogly
- 👤 Vodovzov Genrikh Zalmanovich
- 👤 Grobshtein Solomon Romanovich
- 👤 Ragimova Elmira Mamed Kyzy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:26
CPC Classifications
E; E21; E21B; E21B34/00; E21B34/02; E21B34/025; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8225; Y10T137/8242
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
A VALVE FOR CONTROLLING FLOW IN OIL AND GAS WELLS INCLUDING: A BODY; A SPINDLE MOUNTED IN SAID BODY FOR MOVEMENT LONGITUDINALLY THEREOF; A VALVE SEAT CONNECTED IN SAID BODY AND HAVING AN ORIFICE THEREIN; AN ADJUSTING NEEDLE SECURED TO THE LOWER END OF SAID SPINDLE AND ADAPTED TO ENTER THE ORIFICE OF THE SEAT UPON LONGITUDINAL MOVEMENT OF THE SPINDLE; A RATCHET WHEEL PROVIDED WITH TWO GEAR RIMS HAVING OPPOSITELY DIRECTED TEETH; A THREADED CONNECTION BETWEEN THE RATCHET WHEEL AND THE UPPER PORTION OF THE SPINDLE; TWO DIAPHRAGM HEADS POSITIONED ON OPPOSITE SIDES OF SAID RATCHET WHEEL AND SUPPLIED WITH COMPRESSED GAS; PLUNGERS OPERABLY RELATED TO SAID HEADS AND COACTING WITH SAID RESPECTIVE GEAR RIMS FOR TURNING THE RATCHET WHEEL THUS MOVING SAID SPINDLE AND NEEDLE; AND MEANS OPERABLY RELATED TO THE RATCHET WHEEL FOR SIGNALLING THE TURN OF THE RATCHET WHEEL, SAID SIGNALLING MEANS INCLUDING MEANS COOPERABLE SIMULTANEOUSLY WITH THE TEETH OF SAID GEAR RIMS AND DISPLACEABLE PERPENDICULARLY TO THE AXIS OF ROTATION OF THE RATCHET WHEEL AND SWITCH MEANS ACTUABLE BY SAID DISPLACEABLE MEANS.
Claim 2
Dependent Claim
177 words
A VALVE FOR CONTROLLING FLOW IN OIL AND GAS WELLS INCLUDING: A BODY; A SPINDLE MOUNTED IN SAID BODY FOR MOVEMENT LONGITUDINALLY THEREOF; A VALVE SEAT CONNECTED IN SAID BODY AND HAVING AN ORIFICE THEREIN; AN ADJUSTING NEEDLE SECURED TO THE LOWER END OF SAID SPINDLE AND ADAPTED TO ENTER THE ORIFICE OF THE SEAT UPON LONGITUDINAL MOVEMENT OF THE SPINDLE; A RATCHET WHEEL PROVIDED WITH TWO GEAR RIMS HAVING OPPOSITELY DIRECTED TEETH; A THREADED CONNECTION BETWEEN THE RATCHET WHEEL AND THE UPPER PORTION OF THE SPINDLE; TWO DIAPHRAGM HEADS POSITIONED ON OPPOSITE SIDES OF SAID RATCHET WHEEL AND SUPPLIED WITH COMPRESSED GAS; PLUNGERS OPERABLY RELATED TO SAID HEADS AND COACTING WITH SAID RESPECTIVE GEAR RIMS FOR TURNING THE RATCHET WHEEL THUS MOVING SAID SPINDLE AND NEEDLE; AND MEANS OPERABLY RELATED TO THE RATCHET WHEEL FOR SIGNALLING THE TURN OF THE RATCHET WHEEL, SAID SIGNALLING MEANS INCLUDING MEANS COOPERABLE SIMULTANEOUSLY WITH THE TEETH OF SAID GEAR RIMS AND DISPLACEABLE PERPENDICULARLY TO THE AXIS OF ROTATION OF THE RATCHET WHEEL AND SWITCH MEANS ACTUABLE BY SAID DISPLACEABLE MEANS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |