US3123162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Xsill string stabilizer
Assignee: —
•
Filing: —
•
Granted: 1964-03-03
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Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:25
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/04; E21B7/06; E21B7/062
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
A DRILL STRING STABILIZER WHICH COMPRISES AN ELONGATED TUBULAR HOUSING CONTAINING A PLURALITY OF LATERAL OPENINGS AND INCLUDING MEANS FOR CONNECTING SAID HOUSING IN A DRILL STRING; A TUBULAR MANDREL POSITIONED WITHIN SAID HOUSING AND AXIALLY SLIDABLE THEREIN; SEALING MEANS BETWEEN SAID MANDREL AND HOUSING ABOVE AND BELOW SAID LATERAL OPENINGS; A PLURALITY OF SLOTTED CAM MEMBERS MOUNTED IN FIXED POSITION ON THE OUTER SURFACE OF SAID MANDREL AND EXTENDING OUTWARDLY WITHIN SAID LATERAL OPENINGS; A PLURALITY OF RIB MEMBERS POSITIONED IN SAID LATERAL OPENINGS OVER SAID CAM MEMBERS; CAM PINS ATTACHED TO SAID RIB MEMBERS AND EXTENDING THROUGH SAID SLOTTED CAM MEMBERS, SAID PINS AND THE SLOTS IN SAID CAM MEMBERS BEING POSITIONED SO THAT SAID RIB MEMBERS ARE FORCED OUTWARDLY AS SAID CAM MEMBERS AND MANDREL SLIDE DOWNWARDLY WITH RESPECT TO SAID HOUSING AND SAID PINS BEARING AGAINST VERTICAL SURFACES ON SAID CAM MEMBERS WHEN SAID RIB MEMBERS ARE IN THE EXPANDED POSITION; AND A SPRING IN SAID HOUSING BIASING SAID MANDREL IN A NORMALLY UPWARD POSITION WITH RESPECT TO SAID HOUSING.
Claim 2
Dependent Claim
174 words
A DRILL STRING STABILIZER WHICH COMPRISES AN ELONGATED TUBULAR HOUSING CONTAINING A PLURALITY OF LATERAL OPENINGS AND INCLUDING MEANS FOR CONNECTING SAID HOUSING IN A DRILL STRING; A TUBULAR MANDREL POSITIONED WITHIN SAID HOUSING AND AXIALLY SLIDABLE THEREIN; SEALING MEANS BETWEEN SAID MANDREL AND HOUSING ABOVE AND BELOW SAID LATERAL OPENINGS; A PLURALITY OF SLOTTED CAM MEMBERS MOUNTED IN FIXED POSITION ON THE OUTER SURFACE OF SAID MANDREL AND EXTENDING OUTWARDLY WITHIN SAID LATERAL OPENINGS; A PLURALITY OF RIB MEMBERS POSITIONED IN SAID LATERAL OPENINGS OVER SAID CAM MEMBERS; CAM PINS ATTACHED TO SAID RIB MEMBERS AND EXTENDING THROUGH SAID SLOTTED CAM MEMBERS, SAID PINS AND THE SLOTS IN SAID CAM MEMBERS BEING POSITIONED SO THAT SAID RIB MEMBERS ARE FORCED OUTWARDLY AS SAID CAM MEMBERS AND MANDREL SLIDE DOWNWARDLY WITH RESPECT TO SAID HOUSING AND SAID PINS BEARING AGAINST VERTICAL SURFACES ON SAID CAM MEMBERS WHEN SAID RIB MEMBERS ARE IN THE EXPANDED POSITION; AND A SPRING IN SAID HOUSING BIASING SAID MANDREL IN A NORMALLY UPWARD POSITION WITH RESPECT TO SAID HOUSING.
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) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |