US3247905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cementing collar and knock-down actuating plugs
Assignee: Halliburton Co
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Filing: 1962-11-28
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Granted: 1966-04-26
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Expires: 1982-11-28
Abstract
No abstract record available.
Inventors
- 👤 Eugene E Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:52
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B33/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
IN A DEVICE FOR ACTUATING AN OPENING OR CLOSING SLEEVE OF A CEMENTING COLLAR TO MOVE SUCH SLEEVE FROM A FIRST POSITION TO A SECOND POSITION, THE COMBINATION OF: A BODY HAVING AN EXTERNAL GROOVE AND AN INTERNAL BORE WITH APERTURES BETWEEN SAID GROOVE AND BORE IN COMMUNICATION WITH SAID GROOVE AND BORE, A SPLIT LOCK RING POSITIONED IN SAID GROOVE, A MANDREL POSITIONED IN SAID INTERNAL BORE, MEANS POSITIONED IN SAID APERTURES AND EXTENDING BETWEEN SAID LOCK RING AND SAID MANDREL FOR PREVENTING INWARD COLLAPSING OF SAID LOCK RING, SAID LOCK RING PROTRUDING OUTWARDLY FROM SAID BODY FOR ENGAGING A SLEEVE OF THE CEMENTING COLLAR FOR MOVING THAT SLEEVE FROM THE FIRST TO SECOND POSITIONS UPON LONGITUDINAL MOVEMENT OF SAID BODY, AND SAID MANDREL MOUNTED IN SAID BODY FOR LONGITUDINAL MOVEMENT TO RELEASE POSITION RELATIVE TO SAID
Claim 2
Dependent Claim
138 words
IN A DEVICE FOR ACTUATING AN OPENING OR CLOSING SLEEVE OF A CEMENTING COLLAR TO MOVE SUCH SLEEVE FROM A FIRST POSITION TO A SECOND POSITION, THE COMBINATION OF: A BODY HAVING AN EXTERNAL GROOVE AND AN INTERNAL BORE WITH APERTURES BETWEEN SAID GROOVE AND BORE IN COMMUNICATION WITH SAID GROOVE AND BORE, A SPLIT LOCK RING POSITIONED IN SAID GROOVE, A MANDREL POSITIONED IN SAID INTERNAL BORE, MEANS POSITIONED IN SAID APERTURES AND EXTENDING BETWEEN SAID LOCK RING AND SAID MANDREL FOR PREVENTING INWARD COLLAPSING OF SAID LOCK RING, SAID LOCK RING PROTRUDING OUTWARDLY FROM SAID BODY FOR ENGAGING A SLEEVE OF THE CEMENTING COLLAR FOR MOVING THAT SLEEVE FROM THE FIRST TO SECOND POSITIONS UPON LONGITUDINAL MOVEMENT OF SAID BODY, AND SAID MANDREL MOUNTED IN SAID BODY FOR LONGITUDINAL MOVEMENT TO RELEASE POSITION RELATIVE TO SAID
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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |