US3172484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pile driving apparatus
Assignee: Individual
•
Filing: 1963-05-20
•
Granted: 1965-03-09
•
Expires: 1983-05-20
Abstract
No abstract record available.
Inventors
- 👤 Kirby Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:09
CPC Classifications
E; E02; E02D; E02D7/00; E02D7/02; E02D7/06; E02D7/14; E02D7/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
130 words
PILE DRIVING APPARATUS COMPRISING A VERTICAL SUPPORT, AN UPPER MOUNTING PLATE SLIDABLY MOUNTED ON SAID SUPPORT, A LOWER MOUNTING PLATE SLIDABLY MOUNTED ON THE SUPPORT, MEANS CARRIED BY THE SUPPORT FOR SIMULTANEOUSLY RAISING AND LOWERING SAID MOUNTING PLATES AND HOLDING THEM AT A DESIRED LEVEL, AN ELONGATED HAMMBER GUIDE, FIRST MEANS HINGEDLY CONNECTING AN UPPER END OF SAID GUIDE TO THE UPPER MOUNTING PLATE FOR SWINGING MOVEMENT TOWARDS AND AWAY FROM THE SUPPORT, SECCOND MEANS HINGEDLY CONNNECTING THE LOWER MOUNTING PLATE TO THE HAMMER BEING ADJACENT A LOWER END THEREOF, SAID SECOND MEANS BEING ADAPTED TO MOVE THE HAMMER GUIDE TOWARDS AND AWAY FORM THE SUPPORT, AND MEANS CONNECTED TO SAID SECOND MEANS FOR OPERATING SAID SECOND MEANS SELECTIVELY TO MOVE THE HAMMER GUIDE TOWARDS AND AWAY FROM THE SUPPORT.
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) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |