Patent US3085628A successfully refreshed from Google Patents.
US3085628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inflatable well tool
Assignee: Lynes Inc
•
Filing: 1959-02-18
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Granted: 1963-04-16
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Expires: 1979-02-18
Abstract
No abstract record available.
Inventors
- 👤 Billy C Malone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:51
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/127
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
IN AN INFLATABLE WELL TOOL INCLUDING AN INFLATABLE ELEMENT, ANNUAL HEADS CONNECTED TO EACH OF SAID ELEMENT, TUBULAR MEANS TO SUPPORT SAID INFLATABLE ELEMENT HEADS IN A WELL BORE, PASSAGE MEANS IN SAID TUBULAR MEANS AND AT LEAST ONE OF SAID HEADS TO CONDUCT FLUID PRESSURE TO EXPAND SAID ELEMENT, A CHECK VALVE CLOSING OFF FLOW FROM SAID PASSAGE TO PREVENT FLUID PRESSURE FROM ACTING ON SAID ELEMENT UNTIL THE PRESSURE FLUID OVERCOMES SAID CHECK VALVE, SAID CHECK VALVE INCLUDING AN ANNULAR RESILIENT MEMBER SURROUNDING SAID TUBULAR MEANS, A SUBSTANTIALLY CONTINOUS PROJECTION ON EACH SIDE OF SAID PASSAGE MEANS AT THE OUTLET END AND ENGAGING SAID ANNULAR MEMBER, AND A SUPPORT FOR MAINTAINING SAID RESILIENT MEMBER ENGAGED WITH SAID SURROUNDING OPENING PROJECTIONS WHEREBY PRESSURE FLUID MUST FIRST MOVE SAID RESILIENT MEMBER AWAY FROM SAID PROJECTIONS BEFORE IT CAN ACT TO EXPAND SAID ELEMENT.
Claim 2
Dependent Claim
143 words
IN AN INFLATABLE WELL TOOL INCLUDING AN INFLATABLE ELEMENT, ANNUAL HEADS CONNECTED TO EACH OF SAID ELEMENT, TUBULAR MEANS TO SUPPORT SAID INFLATABLE ELEMENT HEADS IN A WELL BORE, PASSAGE MEANS IN SAID TUBULAR MEANS AND AT LEAST ONE OF SAID HEADS TO CONDUCT FLUID PRESSURE TO EXPAND SAID ELEMENT, A CHECK VALVE CLOSING OFF FLOW FROM SAID PASSAGE TO PREVENT FLUID PRESSURE FROM ACTING ON SAID ELEMENT UNTIL THE PRESSURE FLUID OVERCOMES SAID CHECK VALVE, SAID CHECK VALVE INCLUDING AN ANNULAR RESILIENT MEMBER SURROUNDING SAID TUBULAR MEANS, A SUBSTANTIALLY CONTINOUS PROJECTION ON EACH SIDE OF SAID PASSAGE MEANS AT THE OUTLET END AND ENGAGING SAID ANNULAR MEMBER, AND A SUPPORT FOR MAINTAINING SAID RESILIENT MEMBER ENGAGED WITH SAID SURROUNDING OPENING PROJECTIONS WHEREBY PRESSURE FLUID MUST FIRST MOVE SAID RESILIENT MEMBER AWAY FROM SAID PROJECTIONS BEFORE IT CAN ACT TO EXPAND SAID ELEMENT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |