US3313356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Post driver
Assignee: Individual
•
Filing: 1964-10-28
•
Granted: 1967-04-11
•
Expires: 1984-10-28
Abstract
No abstract record available.
Inventors
- 👤 Elmer R Clevenger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:10
CPC Classifications
E; E04; E04H; E04H17/00; E04H17/26; E04H17/261; E04H17/263
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
A POST DRIVER COMPRISING, AN ELONGATED TUBULAR MEANBER WHICH HAS AN INSIDE DIAMETER SLIGHTLY LARGER THAN THAT OF A POST THAT IS TO BE DRIVEN, A SECOND ELONGATED TUBULAR MEMBER HAVING AN INSIDE DIAMETER SLIGHTLY LARGER THAN THE OUTSIDE DIAMETER OF THE FIRST TUBULAR MEMBER, ONE END OF THE SECOND TUBULAR MEMBER TELESCOPING OVER ONE END OF THE FIRST TUBULAR MEMBER AND PERMANENTLY SECURED IN THAT POSITION, A CYLINDRICAL RAM BLOCK SLIDABLY POSITIONED IN THE SECOND TUBULAR MEMBER, SAID RAM BLOCK HAVING A DIAMETER SUCH THAT THE RAM BLOCK SLIDES IN SAID SECOND TUBULAR MEMBER BUT IS TOO LARGE TO PASS INTO THE FIRST TUBULAR MEMBER, A CLOSURE SECURED TO THE OTHER END OF THE SECOND TUBULAR MEMBER AND A COIL SPRING EXTENDING FROM THE CLOSURE TO THE RAM BLOCK, WHEREBY THE FIRST TUBULAR MEMBER CAN BE PLACED OVER THE END OF A POST THAT IS TO BE DRIVEN AND THE DRIVER REPEATEDLY MOVED UP AND DOWN TO CAUSE THE RAM BLOCK TO OSCILLATE AND REPEATEDLY CAUSE IMPACT BETWEEN THE END OF THE POST AND THE RAM BLOCK TO DRIVE THE POST INTO THE GROUND.
Claim 2
Dependent Claim
185 words
A POST DRIVER COMPRISING, AN ELONGATED TUBULAR MEANBER WHICH HAS AN INSIDE DIAMETER SLIGHTLY LARGER THAN THAT OF A POST THAT IS TO BE DRIVEN, A SECOND ELONGATED TUBULAR MEMBER HAVING AN INSIDE DIAMETER SLIGHTLY LARGER THAN THE OUTSIDE DIAMETER OF THE FIRST TUBULAR MEMBER, ONE END OF THE SECOND TUBULAR MEMBER TELESCOPING OVER ONE END OF THE FIRST TUBULAR MEMBER AND PERMANENTLY SECURED IN THAT POSITION, A CYLINDRICAL RAM BLOCK SLIDABLY POSITIONED IN THE SECOND TUBULAR MEMBER, SAID RAM BLOCK HAVING A DIAMETER SUCH THAT THE RAM BLOCK SLIDES IN SAID SECOND TUBULAR MEMBER BUT IS TOO LARGE TO PASS INTO THE FIRST TUBULAR MEMBER, A CLOSURE SECURED TO THE OTHER END OF THE SECOND TUBULAR MEMBER AND A COIL SPRING EXTENDING FROM THE CLOSURE TO THE RAM BLOCK, WHEREBY THE FIRST TUBULAR MEMBER CAN BE PLACED OVER THE END OF A POST THAT IS TO BE DRIVEN AND THE DRIVER REPEATEDLY MOVED UP AND DOWN TO CAUSE THE RAM BLOCK TO OSCILLATE AND REPEATEDLY CAUSE IMPACT BETWEEN THE END OF THE POST AND THE RAM BLOCK TO DRIVE THE POST INTO THE GROUND.
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) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |