US3274798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration isolator
Assignee: ExxonMobil Upstream Research Co
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Filing: 1964-06-17
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Granted: 1966-09-27
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Expires: 1984-06-17
Abstract
No abstract record available.
Inventors
- 👤 Jr John H Wiggins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:15
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/07; F; F16; F16F; F16F15/00; F16F15/10; Y; Y10; Y10S; Y10S464/00; Y10S464/902; Y10S464/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A VIBRATION ISOLATOR FOR A ROTARY DRILLING COLUMN WHICH COMPRISES INNER AND OUTER SUBSTANTIALLY CONCENTRIC TUBULAR MEMBERS, THE INSIDE DIAMETER OF SAID OUTER MEMBER BEING AT LEAST 10 PERCENT AND NO MORE THAN 20 PERCENT GREATER THAN THE OUTSIDE DIAMETER OF SAID INNER MEMBER, SAID INNER MEMBER HAVING A YOUNG''S MODULUS NO GREATER THAN 15X106 P.S.I. AND A TENSILE STRENGTH OF AT LEAST 50,000 P.S.I., SAID OUTER MEMBER INCLUDING AT LEAST ONE BELLOWSLIKE CONVOLUTION TO PROVIDE A LONGITUDINAL SPRING CONSTANT NO MORE THAN FIFTY PERCENT AS GREAT AS THE LONGITUDINAL SPRING CONSTANT OF SAID INNER MEMBER, BEARING MEANS WITHIN THE ANNULAR SPACE BETWEEN SAID INNER AND OUTER MEMBERS FOR PREVENTING EXCESSIVE FRICTION WEAR, AND COUPLING MEANS AT OPPOSITE ENDS OF SAID TUBULAR MEMBERS FOR RIGID CONNECTION IN A ROTORY DRILL COLUMN.
Claim 2
Dependent Claim
131 words
A VIBRATION ISOLATOR FOR A ROTARY DRILLING COLUMN WHICH COMPRISES INNER AND OUTER SUBSTANTIALLY CONCENTRIC TUBULAR MEMBERS, THE INSIDE DIAMETER OF SAID OUTER MEMBER BEING AT LEAST 10 PERCENT AND NO MORE THAN 20 PERCENT GREATER THAN THE OUTSIDE DIAMETER OF SAID INNER MEMBER, SAID INNER MEMBER HAVING A YOUNG''S MODULUS NO GREATER THAN 15X106 P.S.I. AND A TENSILE STRENGTH OF AT LEAST 50,000 P.S.I., SAID OUTER MEMBER INCLUDING AT LEAST ONE BELLOWSLIKE CONVOLUTION TO PROVIDE A LONGITUDINAL SPRING CONSTANT NO MORE THAN FIFTY PERCENT AS GREAT AS THE LONGITUDINAL SPRING CONSTANT OF SAID INNER MEMBER, BEARING MEANS WITHIN THE ANNULAR SPACE BETWEEN SAID INNER AND OUTER MEMBERS FOR PREVENTING EXCESSIVE FRICTION WEAR, AND COUPLING MEANS AT OPPOSITE ENDS OF SAID TUBULAR MEMBERS FOR RIGID CONNECTION IN A ROTORY DRILL COLUMN.
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |