US3291228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sonic techniques and apparatus for earth boring
Assignee: Individual
•
Filing: 1965-02-23
•
Granted: 1966-12-13
•
Expires: 1985-02-23
Abstract
No abstract record available.
Inventors
- 👤 Jr Albert G Bodine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:22
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A METHOD FOR EARTH BORING BY MEANS OF A DRILL BIT ATTACHED TO THE END OF A ROD MEMBER COMPRISING LONGITUDINALLY VIBRATING SAID ROD MEMBER AND SAID BIT AT A SONIC FREQUENCY, WHILE SAID ROD IS BEING LONGITUDINALLY VIBRATED TORSIONALLY OSCILLATING SAID BIT TO AND FRO AT A SUBSTANTIALLY LOWER FREQUENCY THAN THE LONGITUDINAL VIBRA-
Claim 2
Independent Claim
55 words
A METHOD FOR EARTH BORING BY MEANS OF A DRILL BIT ATTACHED TO THE END OF A ROD MEMBER COMPRISING LONGITUDINALLY VIBRATING SAID ROD MEMBER AND SAID BIT AT A SONIC FREQUENCY, WHILE SAID ROD IS BEING LONGITUDINALLY VIBRATED TORSIONALLY OSCILLATING SAID BIT TO AND FRO AT A SUBSTANTIALLY LOWER FREQUENCY THAN THE LONGITUDINAL VIBRA-
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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |