Patent US3114422A successfully refreshed from Google Patents.
US3114422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cement basket
Assignee: B&W Inc
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Filing: 1961-01-09
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Granted: 1963-12-17
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Expires: 1981-01-09
Abstract
No abstract record available.
Inventors
- 👤 James R Solum
- 👤 William C Hempel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:59
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B33/136
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN A CEMENT BASKET ADAPTED TO BE MOUNTED ON THE EXTERIOR OF A WELL CASING, THE COMBINATION OF: A PAIR OF AXIALLY SPACED COLLARS CONNECTED BY A PLURALITY OF LONGITUDINALLY EXTENDING AND OUTWARDLY BOWED SPRING RODS, A LEAF PANEL SECURED TO EACH SPRING ROD AND EXTENDING UPWARDLY AND OUTWARDLY FROM THE LOWER COLLAR TO A POINT INTERMEDIATE THE TWO COLLARS, SAID LEAF PANELS OVERLAPPING EACH OTHER CIRCUMFERENTIALLY AND DEFINING AN UPWARDLY FACING BASKET, AND MEANS INTERCONNECTING SAID LEAF PANELS FOR MAINTAINING SAID OVERLAPPING RELATION.
Claim 2
Dependent Claim
84 words
IN A CEMENT BASKET ADAPTED TO BE MOUNTED ON THE EXTERIOR OF A WELL CASING, THE COMBINATION OF: A PAIR OF AXIALLY SPACED COLLARS CONNECTED BY A PLURALITY OF LONGITUDINALLY EXTENDING AND OUTWARDLY BOWED SPRING RODS, A LEAF PANEL SECURED TO EACH SPRING ROD AND EXTENDING UPWARDLY AND OUTWARDLY FROM THE LOWER COLLAR TO A POINT INTERMEDIATE THE TWO COLLARS, SAID LEAF PANELS OVERLAPPING EACH OTHER CIRCUMFERENTIALLY AND DEFINING AN UPWARDLY FACING BASKET, AND MEANS INTERCONNECTING SAID LEAF PANELS FOR MAINTAINING SAID OVERLAPPING RELATION.
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) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |