Patent US3171491A successfully refreshed from Google Patents.
US3171491A
Expired / Lapsed
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Liner hanger and setting tool therefor
Assignee: MIDWAY FISHING TOOL Co
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Filing: 1962-10-12
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Granted: 1965-03-02
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Expires: 1982-10-12
Abstract
No abstract record available.
Inventors
- 👤 William H States
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:15
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
193 words
IN A HANGER AND A TOOL FOR SETTING THE SAME IN A WELL CASING TO SUSPEND A LINER FROM SAID CASING, THE COMBINATION OF: A TUBULAR HANGER BODY; MEANS FOR SUSPENDING SAID LINER FROM SAID BODY; A DRAG DEVICE MOUNTED ON SAID BODY AND FREELY RECIPROCABLE LONGITUDINALLY RELATIVE TO SAID BODY BETWEEN UPPER AND LOWER LIMITS ON SAID BODY, SAID DEVICE FRICTIONALLY ENGAGING SAID CASING TO RETARD LONGITUDINAL MOVEMENT AND ROTATION OF SAID DEVICE IN SAID CASING; MEANS ON SAID BODY DEFINING SAID LIMITS BY ENGAGING SAID DEVICE WHEN LONGITUDINAL MOVEMENT OF SAID BODY, RELATIVE TO SAID DEVICE HAS BROUGHT SAID DEVICE TO EITHER OF SAID LIMITS, SAID LIMIT DEFINING MEANS THEREUPON CAUSING SAID DEVICE TO MOVE LONGITUDINALLY IN SAID CASING WITH SAID BODY; KEY MEANS LIMITING RELATIVE ROTATION BETWEEN SAID BODY AND SAID DEVICE; SLIP MEANS PROVIDED ON SAID DEVICE AND EXTENDING UPWARDLY THEREFROM; AN EXPANDER FOR SAID SLIP MEANS LONGITUDINALLY SHIFTABLY MOUNTED ON SAID BODY ABOVE SAID SLIP MEANS AND NORMALLY DISPOSED UPWARDLY OUT OF OPERATIVE RELATION WITH SAID SLIP MEANS WHEN SAID DRAG DEVICE IS AT ITS UPPER LIMIT AFORESAID ON SAID BODY; A SETTING TOOL INCLUDING A MANDREL PRO-
Claim 2
Dependent Claim
193 words
IN A HANGER AND A TOOL FOR SETTING THE SAME IN A WELL CASING TO SUSPEND A LINER FROM SAID CASING, THE COMBINATION OF: A TUBULAR HANGER BODY; MEANS FOR SUSPENDING SAID LINER FROM SAID BODY; A DRAG DEVICE MOUNTED ON SAID BODY AND FREELY RECIPROCABLE LONGITUDINALLY RELATIVE TO SAID BODY BETWEEN UPPER AND LOWER LIMITS ON SAID BODY, SAID DEVICE FRICTIONALLY ENGAGING SAID CASING TO RETARD LONGITUDINAL MOVEMENT AND ROTATION OF SAID DEVICE IN SAID CASING; MEANS ON SAID BODY DEFINING SAID LIMITS BY ENGAGING SAID DEVICE WHEN LONGITUDINAL MOVEMENT OF SAID BODY, RELATIVE TO SAID DEVICE HAS BROUGHT SAID DEVICE TO EITHER OF SAID LIMITS, SAID LIMIT DEFINING MEANS THEREUPON CAUSING SAID DEVICE TO MOVE LONGITUDINALLY IN SAID CASING WITH SAID BODY; KEY MEANS LIMITING RELATIVE ROTATION BETWEEN SAID BODY AND SAID DEVICE; SLIP MEANS PROVIDED ON SAID DEVICE AND EXTENDING UPWARDLY THEREFROM; AN EXPANDER FOR SAID SLIP MEANS LONGITUDINALLY SHIFTABLY MOUNTED ON SAID BODY ABOVE SAID SLIP MEANS AND NORMALLY DISPOSED UPWARDLY OUT OF OPERATIVE RELATION WITH SAID SLIP MEANS WHEN SAID DRAG DEVICE IS AT ITS UPPER LIMIT AFORESAID ON SAID BODY; A SETTING TOOL INCLUDING A MANDREL PRO-
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) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |