US3316722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pile driving mandrel construction and method
Assignee: Union Metal Manufacturing Co
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Filing: 1964-09-22
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Granted: 1967-05-02
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Expires: 1984-09-22
Abstract
No abstract record available.
Inventors
- 👤 Harry De R Gibbons
- 👤 George D Rausch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:26
CPC Classifications
E; E02; E02D; E02D7/00; E02D7/28; E02D7/30; E02D5/00; E02D5/66; E02D5/665
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
PILE SHELL DRIVING MANDREL CONSTRUCTION, INCLUDING A SUBSTANTIALLY RIGID LONGITUDINALLY CONTINUOUS MANDREL MEMBER HAVING A HEAD PROVIDED WITH UPPER AND LOWER ENDS AND A TAPERED SHELL-CONTACTING PORTION CONNECTED WITH THE LOWER END OF THE HEAD, FLOATING SHELL-CONTACTING DRIVING RING MEANS SURROUNDING THE HEAD BETWEEN THE UPPER AND LOWER ENDS OF THE HEAD, AND MEANS MOUNTING THE RING MEANS ON THE HEAD FOR AXIAL MOVEMENT RELATIVE TO THE HEAD ABOVE THE TAPERED PORTION AND BELOW THE UPPER END OF THE HEAD.
Claim 2
Dependent Claim
80 words
PILE SHELL DRIVING MANDREL CONSTRUCTION, INCLUDING A SUBSTANTIALLY RIGID LONGITUDINALLY CONTINUOUS MANDREL MEMBER HAVING A HEAD PROVIDED WITH UPPER AND LOWER ENDS AND A TAPERED SHELL-CONTACTING PORTION CONNECTED WITH THE LOWER END OF THE HEAD, FLOATING SHELL-CONTACTING DRIVING RING MEANS SURROUNDING THE HEAD BETWEEN THE UPPER AND LOWER ENDS OF THE HEAD, AND MEANS MOUNTING THE RING MEANS ON THE HEAD FOR AXIAL MOVEMENT RELATIVE TO THE HEAD ABOVE THE TAPERED PORTION AND BELOW THE UPPER END OF THE HEAD.
References Cited (Backward Citations)
US1998643A
Cited
US2036355A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |