US2903073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cement conditioner for well walls
Assignee: Gem Oil Tool Co Inc
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Filing: 1957-03-28
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Granted: 1959-09-08
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Expires: 1977-03-28
Abstract
No abstract record available.
Inventors
- 👤 William E Coyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:58
CPC Classifications
E; E21; E21B; E21B37/00; E21B37/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN A CEMENT CONDITIONING ATTACHMENT FOR WELL CASINGS IN COMBINATION, A LOWER SLEEVE MOUNTED ON THE OUTSIDE OF A WELL CASING TO PARTAKE OF MOVEMENT THEREWITH, AN UPPER SLEEVE SLIDABLE ON SAID CSING, EACH SLEEVE HAVING A PLURALITY OF SPACED PERIPHERAL APERTURES THEREIN, AN UPPER RING AND A LOWER RING FIXED TO AND SURROUND SAID UPPER AND LOWER SLEEVES RESPECTIVELY IN HORIZONTAL ALIGNMENT WITH THEIR RESPECTIVE APERTURES, A PLURALITY OF RESILIENT WIRE MEMBERS EACH FORMED WITH AN UPPER AND LOWER LOWER COIL RESPECTIVELY, SURROUNDING SAID UPPER AND LOWER RINGS AND EACH FITTING IN AN APERATURE IN ITS ASSOCIATED SLEEVE, AND EACH WIRE MEMBER PROJECTING BETWEEN ITS
Claim 2
Dependent Claim
106 words
IN A CEMENT CONDITIONING ATTACHMENT FOR WELL CASINGS IN COMBINATION, A LOWER SLEEVE MOUNTED ON THE OUTSIDE OF A WELL CASING TO PARTAKE OF MOVEMENT THEREWITH, AN UPPER SLEEVE SLIDABLE ON SAID CSING, EACH SLEEVE HAVING A PLURALITY OF SPACED PERIPHERAL APERTURES THEREIN, AN UPPER RING AND A LOWER RING FIXED TO AND SURROUND SAID UPPER AND LOWER SLEEVES RESPECTIVELY IN HORIZONTAL ALIGNMENT WITH THEIR RESPECTIVE APERTURES, A PLURALITY OF RESILIENT WIRE MEMBERS EACH FORMED WITH AN UPPER AND LOWER LOWER COIL RESPECTIVELY, SURROUNDING SAID UPPER AND LOWER RINGS AND EACH FITTING IN AN APERATURE IN ITS ASSOCIATED SLEEVE, AND EACH WIRE MEMBER PROJECTING BETWEEN ITS
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) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |