US3095935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coring bit
Assignee: Jersey Production Research Co
•
Filing: 1958-09-25
•
Granted: 1963-07-02
•
Expires: 1978-09-25
Abstract
No abstract record available.
Inventors
- 👤 Alexander B Hildebrandt
- 👤 Harold C Bridwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:51
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/46; E21B10/48; E21B10/60; E21B10/605; E21B10/62
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
89 words
IN A ROTARY CORING BIT HAVING A BODY WHICH POSSESSES A DRILLING FACE OF CHARACTER TO ENGAGE THE BOTTOM OF A HOLE IN WHICH THE BIT IS OPERATING, A FLUID CONDUIT MEANS THERETHROUGH AND AN AXIAL CORE PASSAGE EXTENDING LONGITUDINALLY THERETHROUGH, THE IMPROVEMENT WHICH COMPRISES A FLUID NOZZLE IN FLUID COMMUNICATION WITH THE FLUID CONDUIT MEANS AND POSITIONED IN SAID DRILLING FACE CLOSELY ADJACENT SAID CORE PASSAGE WITH SAID NOZZLE BEING OF A CHARACTER TO DISCHARGE FLUID IN A PATH SUBSTANTIALLY TANGENTIAL TO THE PERIPHERY OF SAID CORE PASSAGE.
References Cited (Backward Citations)
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US2493178A
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US2545195A
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US2708104A
Cited
US2727729A
Cited
US2819043A
Cited
US2838286A
Cited
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Cited
US2901222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-01 | 1966-12-31 | 1967-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-01 | 1970-12-31 | 1971-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-01 | 1974-12-31 | 1975-07-02 | $7700.00 | Window Closed / Lapsed |