US3242997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pile driving apparatus and method
Assignee: PETER KIEWIT SONS CO
•
Filing: 1963-01-31
•
Granted: 1966-03-29
•
Expires: 1983-01-31
Abstract
No abstract record available.
Inventors
- 👤 Alpo J Tokola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:52
CPC Classifications
E; E02; E02D; E02D7/00; E02D7/02; E02D13/00; E02D13/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
123 words
IN A PILE DRIVING APPARATUS, A FOLLOWER, MEANS FOR SUPPORTING THE FOLLOWER IN A GENERALLY VERTICAL POSITION, MEANS CARRIED ADJACENT THE LOWER END OF THE FOLLOWER FOR ENCOMPASSING THE UPPER END OF THE PILE TO GUIDE THE FOLLOWER ON THE PILE, A PILE CLAMP MOUNTED ON THE LOWER PORTION OF THE FOLLOWER, SAID PILE CLAMP BEING MOVABLE BETWEEN OPEN AND CLOSED POSITIONS TO PLACE COMPRESSIVE FORCES ON THE PILE IN A DIRECTION LATERAL TO THE LONGITUDINAL AXIS OF THE PILE WHEN THE PILE CLAMP IS CLOSED AND TO RELEASE THE PILE WHEN THE PILE CLAMP IS OPEN, MEANS OPERATIVELY CONNECTING THE FOLLOWER TO THE PILE CLAMP FOR GUIDING THE FOLLOWER AND PERMITTING RELATIVE VERTICAL MOVEMENT BETWEEN THE PILE CLAMP AND THE FOLLOWER, AND
References Cited (Backward Citations)
US161373A
Cited
US1566631A
Cited
US2723532A
Cited
US711013A
Cited
US900140A
Cited
US1085061A
Cited
US1569763A
Cited
US1906136A
Cited
US1998643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |