US3340932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sub-surface connector for plural tubing elements
Assignee: Armco Inc
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Filing: 1965-04-21
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Granted: 1967-09-12
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Expires: 1985-04-21
Abstract
No abstract record available.
Inventors
- 👤 Peter S Bloudoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:52
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/10; E21B17/00; E21B17/02; E21B17/08; E21B17/085; E21B17/0853; E21B43/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
104 words
IN A SUB-SURFACE CONNECTOR HAVING A PLURALITY OF TUBING ELEMENTS EXTENDING DOWNWARDLY THEREFROM WHEN LOCATED IN A WELL CAVITY, THE IMPROVEMENT COMPRISING A LANDING COLLAR HAVING SEPARATE MEANS OPERATIVELY CONNECTED TO EACH OF SAID TUBING ELEMENTS, SAID MEANS INCLUDING A LANDING STEM HAVING A PACKING PIN EXTENDING INTO SAID LANDING COLLAR, SAID LANDING COLLAR HAIVNG A DOWNWARDLY TAPERING RECESS OVERLYING AND SURROUNDING SAID PACKING PIN AND ADAPTED TO GUIDE A SUBSEQUENTLY LOWERED TUBING STRING INTO A PREDETERMINED POSITION, AND PACKING MEMBERS CARRIED INTERNALLY OF SAID SUBSEQUENTLY LOWERED TUBING STRING COOPERATING WITH THE EXTERIOR OF SAID PACKING PIN TO FORM A FLUID TIGHT CONNECTION THEREWITH.
References Cited (Backward Citations)
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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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |